^ ATLANTIC BIOLOGICAL STATION ^" ST. ANDREWS, N. 6. IJ C SMITHSONIAN INSTITUTION. UNITED STATES NATIONAL MUSEUM. BULLETIN OF THE UNITED STATES NATIONAL MUSEUM. No. 45. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPIDi BY WILLIAM H. AS tl MEAD. WASHII?^GTOI5- : U () J i 5 U GOTERNMENT PllINTING OFFICE. 1893. ^ C^^ ADVERTISEMENT. This work (Bulletin ^o. 45) is one of a scries of papers intended to illustrate the collections belongiuji' to the United tSttites, and consti- tuting the National Museum, of which the Smithsonian Institution was placed in chai'ge by the act of Congress of August 10, 164(1, The publications of the National Museum consist of two series — the Bulletin, of which this is No. 45, in continuous series, and the Proceed- ings, of which the sixteenth volume is now in press. A small edition of each pai)er in the Proceedings is distributed in pamphlet form to specialists in advance of the publication of the bound volume. The Bulletin of the National Museum, the publication of which was commenced in 1875, consists of elaborate papers based upon the collec- tions of the Museum, reports of expeditions, et<'., while the Proceedings facilitate the prompt publication of freshly-acquired facts relating to biology, anthropology, and geology, des(!riptions of restricted groups of animals and plants, the discussion of particular questions relative to the synonymy of species, and the diaries of minor expeditious. Other papers, of more general popular interest, are printed in the Appendix to the Annual Eeport. Full lists of the publications of the Museum may be found in the cur- rent catalogues of the publications of the tSmithsonian Institution. Papers intended for publication in the Proceedings and Bulletin of the National Museum are referred to the Committee on Publications, composed as follows: T. H. Bean (chairman), A. Howard Clark, K. E. Earll, Otis T. Mason, Leonhard Stejneger, Frederick W. True, and Lester F. Ward. S. P. Langlev, ISt'crcUiri) of the Smithsonian Institution. Washington, 1). C, July 5th, 1893. MONOGRAPH OF THE m^B. AMERICAN PROCTOTEYPIM. vx WILLIAM H. ASHMEAD. iMii WASHDTGTON: GOVERNMENT PRINTING OFFICE. 1893. P R E F A C i: In the present work I have attempted to give a systematic descrip- tion of the spe(des of the Ilymenopterons family Proctotrypidn^ found in North America, north of Mexico, at the same time systematizing and describing the genera of the worhl, as an aid to fnture students. It represents several years stndy of the family, and although sen- sible of its incompleteness and many imperfections I shall be fully repaid for the labor involved if I have paved the way for a more thorough stiuly of the family or stimulated others to collect these curious insects and study their renuirkable habits. In the preparation of this work my thanks are especially due to the following friends: To Mr. W. Hague Harrington, of Ottawa, Canada, I am indebted for valu.able contributions to my cabinet during many years and for types of some of the species described by the Abbe Provancher; to my friends and colleagnes, E. A. Schwarz, The«). Pergande, and Otto Heidemann, who have contributed by donating, from time to time, specimens taken during our entomological excursions in and around Washington and elsewhere; to Prof. E. A. Popenoe, for a few species collected in Kansas; to Dr. C. Y. Kiley, for the free use of his valuable notes on the rearings and habits of the species, and for other courte- sies shown me during the progress of the work ; to Mr. L. O. Howard, my friend and colaborer in the Microhyjnenoptera for like courtesies; to Dr. Gustav Mayr, of Vienna, Anstria, for some typical European genera, and to Dr. C. W. Stiles, for making a microscopical section of the ovipositor. Finally, to Prof. Dr. K. Mobius, director of the Royal Berlin Museum, and to Dr. F. Karsch, custodian of said museum, my warmest thanks are due for allowing me to study and describe the North American species contained therein, I have also had the privilege of studying and describing the many new and interesting forms in the National collection and in the collec- tion of the American Entomological Society, kindly sent by Mr. E. T. Cresson to the Museum for study and exchange, and which contains the types of Cresson, Pattou, and Haldeman. Dr. Riley has also permitted me to include from bis manuscript, a few descriptions of sjiecies in which he has been particularly interested. W. H. A. WASHmGTON, l>. C, March 4f 1893. C O N T E N T S Pago. Prefaro 5 lutroduetion y External structural characters: The head; the thorax; the .ihdomen, ovi- positor, etc 10 Habits of tlie perfect iiisiicts Ki Diiiiorphisiu ami pa rtlicnogciu'sis 17 The transforiiiatiojis or life history IK The egy and eiubryological (hivelopiiieiit; tke larva-, tlieir habits and jinpation. Distribution 21 Classilicutiou 22 Table of the snlifainilies gfi Subfamily I.— Hethylina' 27 II.— Euiboh niiuie 77 III.— Dryiiiina' 80 IV. — Ceraphroniua' 102 V, — Seelioiiinie 13(5 VI. — riatygasteriuie 247 VII.— Heloriua' 330 VIII.— Proctotrypiiiie 331 IX.— Bely tiiiie 345 X. — Diapriinai 3H4 Tabular view of the bred NortU American Proctotrypidie 449 Literature .ind al»l)reviations.. 453 Explanation to i»late.s 459 I»'l«x 4(}5 T N T U ( ) D U C T I O N What a widn field, thoreforo, romains to be iiivestiKi>t<«!foie wo Hhall become acqiiaiiitctl with tiio (>(H),(MH) or vvrii .KM),()(H) Hpocien hiii)])oh(;,1 by Messrs Kirby ami SpoucM' to fxist; and how absurd doos it st'Ciii to consiib'r our systems or rather sys- tem as lirmly establislied whilst so little is comparatively known. — Wkstwood, in 183:i Although (he classification of insects is in a nxn-e satisfactory condi- tion than wlicn Prof. Wcstwood wrote these nieniorable words, more than liirif a century ago, a fact due in great part to this Nestor of entomology ant in a few cases, have the antenna? 12-jointed in the female and 13-Jointed in the male, while in the Proctotiypida' such is not the case: either both sexes have the same number of joints or a less or greater niind)er in the opposite sex. With these few iireliminary remarks, and before entering into the systematic description of the divisions, genera, .and species, I have thought it advisable to go more fully into a (lescrii>ti(>n of the external structure, biology, and classification. EXTERNAL STKUCTT'RAL ('lEARACTEKS.' TllK IlKAI). The head, in shape, is variable in the different groups; it may be oblong, tran8verse,quatlrate, or globular, and is rarely cornuted ( (ralesHft). The vertex is usually convex or subconvex and in only two genera, Bryinus and Oonatopus, is it concave. The occiput is more or less concave or excavated, with the superior margin rounded or sharp, and frequently margined, the margin often extending along the cheeks {Seelio, etc.). The ocelli when present are three in number and vari- ously arranged, their position affording excellent secondary generic characters; they are absent only in a few apterous forms in the differ- ent group>. The eyes are usually of moderate size, rounded, ovate, or oval, and most frequently convex; in the wingless forms they are occasionally very small but raiely entirely Avanting [Isohrachium 9 ). The clypeus is smnll or inconspieiious, and has afl'orded but slight assistance in systematic work, although possibly more use could be made of it. In the IJethyliuie it is strongly carinated medi.iUy. The antenna' vary in length, shape, and in the number of joints from 7 to 15; also in the position of insertion. They may be elbowed or straight, seldom exhibit a ring joint, and are of i»rimary importance in classifi- cation. It is usually only in the males that the antennse .ire hniger than the body, and in this sex they .are gener.ally filiform or setaceous, more rarely clavate or subclavate, raiely branched or ramose, and > Details figured on plate i. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 11 dentate or pedicellate and vertieillate. In some groups the number of joints is alike in both sexes, but in others they are more numerous in the males, while in at least one group, the IJelytin.e, the females have the greater number. The mandibles are in the majority of the groups bidentate or bifid, but in th»' Bethylinai and Dryinina^ they vary from 2- to 0-dentate: Apencsia has but 2; Epyris and Mesitius 5 or 0; i^derodenna 3 or A, etc. Most of the genera in the Dryinina-i have 3 or 4; the ScelioninfB 2 or 3; while in only one gnmp, the Proctotrypina', are they eden- tate. The maxillie, PI. i, Fig. 2, terminate in one or two large, thin, mem- branous lobes, the galea and lacinia, while the mentum ia small, horny, or coriaceous. The maxillary palpi vary in the number of joints from 2 to (i and ai i.sually conspicuous from beneath. The labial palpi, PI. I, Fig. 3, on the contrary, are short ami inconspicuous, usually 2- or 3- jointed, the terminal joint being the longest; while in one group, the Platygasterina", they are 1-jointed. THK THORAX. The thorax is, as a rule, rarely very much narrower than the head, variable in breadth and length in the different groups, and is of the greatest importance in classification. Tlie three principal divisions are the pro-, meso-, and meta thorax, an/') called the parapsidal furrows; it is then said to be trilobed. Fig. m becomes the middle lobe. Fig. p the parapsides scapuhe or lateral lobes. Fig. s is the meso-scutellum, usually desig- nated as the scutellum, and has usually at the lateral basal angles (Fig. nx) two subtriangular sclerites termed axilhe. Fig. mps is the meso- postscutellum, often visible only as a transverse band, carina, or fold, and again quite distinct and armed with one or more strong spines or 12 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. tboru.s. By some autlioiitics it is cousideiecl a sclerite of the meta- thorax. Fij;. /// is the tej^iihi or wing scah* of front wiiij". The meso. pleuroii (Fig, inp) is eoniposed of episternnm ami epiiiieroii. The meso- sternura is undivided and \a fre(piently not separated from the ])leural sclerites. The metathorax. or third division of tlie tliorax, sni)]>orts the hind wiugs, liind h»gs. and the al)dojnen, and it also is (piite variable in length, shape, and seulpture. The sides (Fig. infp) are termed the metapleura, and the selerite (Fig. .s7>) extending ol)li(xnely forward from the insertion of the hind legs to the base of the hind wing and behind the mesoplenron is the metepisterniim ; the npi»er surface (Fig. mn) is the metanotum. Fig. up nqn-esents the position of the spiracles, while ihn shows the insertion of tlu^ hind wings. Tlu! other normal sclerihvs arc^ not differentiated. TiiK wi\c;s. In shape and neuration, the wings exhibit the greatest diversity, and are of i)rimary importance in «;lassitication. As a rule, the hind wings are veinless or the neuration is meager (PI. i, Fig. 5), the highest de- velo]>ed having but a single basal cell. They are rather broad and with a distinct lobe in the Bethyliuiic, Endwiemiuse, and th(^ Dryinime; broad in the Froct<>tryin;e, but without a distinct lobe; while in the other groups they are much narrowed toward base, and not especially widened toward apex, the apex being sometimes acute. The front wings are entirely veinless in only a single tribe, the Platygasteriui, although another tribe, the Inostemmini, in the same subfamily, and a few genera in another subfamily, the S(^elioninje, are almost veinless, having only a submarginal vein terminating in a small knob or stigma. The neuration of the anterior w ings reaches its fullest development in the Bethyliuie, Embolemina'!, Dryinina^, and Ilelorina', although even in these groups there are genera with almost veinless wings {Cephalono- mia, etc.). The neuration of the tirst three of these groups mentioned more closely resembles that of the (Jhrysididic and Scoliidje; the Ilelorina; and some genera in other groups that of the Braconidje; while some genera in the Scelioninse closely approach that of the Chalcidida>. The great variation in the shape of the wings and the peculiarities of venation are fully brought out in the plates; but as the neuration, in connection with other characters, is of primary importance in a sys- tematic study of the family, it is important that the horismology of the wings be fully understood. In Figs. 4 and 5, on Fl. i, by the use of the front wing of Pristocera atra Klug. and the hind wing of a belytid, as being the most special- ized in the group, and, with the explaaatiou given below, the tecbnical terms may be easily acquired. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPIDiE. Horismology of the wings. FROXT WIIfG. 13 Longitudinal nerves. Tran.sverse nerves. Cells or areolets. e. Costal. 6. Basal. 1. Costal (cloee and Scelionina', the females are furnished with a peculiar horn like structure at the base of the abdomen that projects forward over the metathorax, and, indeed, often as far forward as the head (PI. xi. Fig, 0). It gives to these insects a singular appearance, but otherwise has no functional significance, being merely a sexual peculiarity. The abdomen reaches its gi eatest length in proportion to the rest of tbe body, probably in the genus Macrotclcia (PI. ix. Fig. G), and its most unique shape in Suetognstei' (PI. xii, Fig. 4). Connected with the abdomen are the important organs of reproduc- tion, tbe ovipositor, etc., which will now be described. THK OVIPOSITOU. In tbe difterentiation of its parts, the ovipositor, in this family, agrees with other terebrant Hymenoptera, the only visible difference being that in the whole group, excei)t in three or four abnormal indi- viduals, tbe outer sheaths are conjoined and form a tube or scabbard at tbe tip of tbe abdomen that affords ])rotection for the ovipositor proper and its two spicuhe when not in use. Distinct sutures are visible in this tube, and after death it can be readily separated into two plates. This tubular formation of the sheaths reaches its highest develop- ment in the genus Proctotrypes. On PI. I two forms are shown. Fig. G represents that of Froctotrypes caudatm Say, our largest species. Here the tube is as long as the abdomen, slightly compressed and curving downward at tip. It is readily detached, and in the tigure is represented partly detached, in order to show tbe internal structure of the ovipositor. The terebra, or oviiwsitor proper (f6a), is the piece through which the egg passes; it is composed of three pieces, a broad upper plate and two spicula? [spc) or lower plates, tbe latter united to the former by a dovetailed joint (see Fig. 0, A and B). These three pieces are dilated and lobed at base («p/), and are conne* '^ed by strong muscles to a basal plate [bp) MONOGRAPH OF THK NORTH AMERICAN PROCTOTRYPID.E. 15 with the iutenml walls of the abdomen, their tips beiu^- sharply pointed, ueetlle-like, and usnally mieioscopically serrated. The spicuhTO are used for i)iereinj^ or borinjj;-, and move forward and backward ou the upper plate as a saw in the hands of a carpenter. Figs. 7 and 8 represent the terebra of Epyrix grandis, one of the hirgest species in our fauna. The different paits are lettered identi- cally as iu i'. e/) and tlie penal claspers (pe) seem not to have been noticed before, and I believe are now pointed out for the tirst time. Fig. 11 represents the male genitalia of Proetotrypes coudatus Say, as seen from the side after the removal of the left ventral spine: vs, right ventral spine; ns, upper sheath, slender and davate; Is, lower sheath, very broad and Hat and terminating in four chitinous lobes. Pig. 12 represents the same organs in the male of Scleroderma ct/lin- dried, after Westwood: us, upper sheaths, ''the extremities of which are thin and incurved"; Is, lower sheaths, ''broad and each with a broad, simple stipes {(Id), and fbes (<), two of which are setose at the tips, and (me at least more rigid than the other parts." In Fig, 13, PI. I, I represent the ovipositor of IScleroderma ephippium, after Westwood. In his explanation he says: The parts of the ovii>ositor itself are vevtit'ally compressed, the recurved bases of the spicuhe (e), with their muscular angulated lobe or catch iff), beini^ represented as flattened. By strong protrusion of the spicuhn beyond the extremity of terebra, the curved basal portions of the former arc straightened and brought forward to the base of the t(>rebra, where their dilated angular form prevents tlicm from further protrusion. The parts marked c. e. are the mcmliranous plates connecting the base of the spicula; and of the terebra itself with the interior of the abdomen. HABITS OF THE PERFECT INSECTS. The imagos are most frequently found wherever their hosts are most plentiful and th<»ir lives are of short duration, seldom extending beyond a few days. Those I have kept in conrtnement live but four or live days, although in freedom they probably live longer. The favorite resorts for diapriids, bethylids, and proctotrypids are low, moist places, where there is a luxuriant growth of vegetation and a black or mucky soil, the decaying vegetation attording excellent food for their hosts — dipterous and other larva'. The opening buds and newly formed leaves of plants and trees, and especially along the out- skirts of a dense forest or wood, are particularly attractive to platygas- terids and telenomids, while the bethylids, dryinids, and scelionids, as a rule, frequent the more ©pen fields. In Florida, dry sandy knolls, where the scrub oak grows, are the favorite resort of the bethylids. Species in the genera Epyris and Mesitius, I have taken most frequently MONOGRAPH OF THE NORTH AMERICAN PHOCTOTRYPIDiE. 17 on trees badly infested with lepidoiJterous leaf ndleis smd minerH. Other genera t"re\vers Tire U'ss frequi'ntly visited by tlie tiny species of tliis faujily than in the other hynienopterons families, e\cei>t those tiowers that all'ord protection or thml for their hosts. Various platy- gasterius are the only luenibers of the family that I can recall having captured on llowers, and in sui^h cas<*s the flowers were invariably in- fested with cecidomyiid larva-, on which they were parasitic. When cai)tured, as with other llynieiKtptera, some pnM-totrypidsgive off a waspy or pungent odor. I'rof. Westwood has recorded the fact, taken from Mr. Saunders's MS. notes, that the female Scleroderma linearis, taken in a house September liS, l.Sl'J, stinging his neck, wken captured "thrc^w out a pungent IVetid odor." UIMORPIIISM AND PARTIIENOOENESIS. There is scarcely any doubt but that many of the wingless forms to be found in various genera of this family are only dimorphic forms of winged species, although comparatively little is positively known on the subject. Until such forms are bred from generation to genera- tion, however, as has been done in the Cynipida' by Dr. 11. Adler, we must be content to describe these forms as distinct species, for any other course would be unscientitic or guesswork. In this monograph I have not hesitated, therefore, to give these apterous individuals a separate siMJcitic name. Doubtless also, as in the Blastophagie, or tig- insects, trimorphism occurs. Prof. Westwood,' la speaking of the genus Scleroderma says: Some of the spt^cies of this genus exhibit a remarkable instance of dimorphism and even trimorphism in the females, some of which are furnished with certain of the characteristics of the opposite sex. Sir S. S. Saunders, in addition to the ordi- nary female of -S. ephippmm destitute of wings and ocelli, found one agreeing in the general form of the body with the females, but possessing the fully developed wings and ocelli of the male. Remembering the diversity in the size of the heads of dif- ferent individuals among some of the species of ants, I was curious to ascertain how far this character was to be found in these different individuals. Their heads were, therefore, drawn of a large size by the camera lucida, which was then carefully re- duced by measurement, when it appeared that the heads of the normal females were slightly longer than wide, whereas the head of the winged and ocellated females was considerably broader than long, although its length agreed very nearly with that of the normal female. Their relative proportions may be expressed by the fol- lowing figures : Long. Wide, Uoad of normal fep ale without winga or ocelli Head of female wit h wuigfl and ocelli ' Trans. Ent. Soc. Lend., 1881, p. 120. 21989— No. 45 2 77 78 75 90 18 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Tliesr mtsasureinciits inay !>«• y Ganin as equivaleut Fio. 1. — Eiuliryonic (levi'lopuicnt of |>1atyga8ter: A, ejig; B, primitive rcll; C, atlditinnal cells de- vflopetl from the fu-st; I) and E, further cell iilar development; F, final embryonic etage. (After Gauin.) to the amnion ( ? serous membrane) of other insect embryos. In the embryo cell new cells are stated to be formed by a process of endogenous cell formation (Fig. 1, D, E). It appears probable that Gauiu has mistaken nuclei for cells in the earlier stages, and that a blastoderm is formed as iu other insects, and that this becomes divided in a way not explained into a 8uj>erficial layer which gives rise to the serous en- velope and a deeper layer which forms the embryo. However this may be, a differ- entiation into an epiblastic layer of columnar cells and a hypoblastic layer of more rounded cells soon becomes apparent in the body of the embryo. Subsequently to this the embryo grows rapidly, till by a deep transverse constriction on the ventral stirface it becomes divided into an anterior cephalothoracic portion and a posterior caudal porticm (Fig. F). The cephalothorax grows iu breadth, and near its an- terior end an invagination appears, which gives rise to the mouth and oesophagus. On the ventral side of the cephalothorax there is first formed a pair of claw-like appendages on each side of the mouth, then a posterior pair of appendages near the junction of the cephalothorax and abdomen, and lastly a pair of short conical an- tennte in front. At the same time the hind end of the abdomen becomes bifid, and gives rise to a fork-like caudal appendage ; and at a slightly later period four grooves make their 20 Un-LpniX 15, UNITKU STATKS NATIONAL Ml'SKlIM. nppearaiH'(i in tlio i-aiuliil n-gion, mid divide lliiH )>art of tliii iMiibryu into HiicrcMtivo seguieuts. W'liih? tliha;;iis : i.nai', .siii)ra-(rno|iliageal ganglion; bsiit. voiitr;;] ciiililastic plate; Im, lateral iiniseles (the letters also jmint in D to tlie Hali- vary glands) ; (/^, ]»roeto»l;einn ; r/n, generative organs; J/i). Of the internal changes which take place during the shedding of the cuticle, the first MONOORAPH OF THE NUUTII AMICKICAN PKOCTOTUYIMD.E. 21 is tho forniiitioii of u proctod.i'iini i.'/'O ••> a'» invii^iiiatiim. which eiuls Mindl}- incou. tilctwitlitheinosonteroii. Short ly after this a tliiikfiiinj; of thoopibhitit^^*"!) ajipears ah)iij? tho ventral surface, which jjives rise iitainly to the ventral uervecord ; thiH thick- oiiiiiK is continuous behind with thoepiblast, which is inva<;inated to form tho proc- toda-uni, and in front is prohnigcl on each side into two jtrocephalic lobes, in which there are also thickonin'48 of tlie <'piblast ((jmc), whicdi become converted into supra- a-sopliaf^eiil j^anglia, and jtossibly other i>arts. Toward the close of the second larval period the muscles (/m) become segnientally arranged, and {ji^'" iudications of tho segmentation whic'.i becomes apparent in tho third larval period. Tho third and last larval stage (Fi^:. 2, K) of I'latytjoBter, (hir- ing which it still remains in the tissues of its host, presents no very peculiar fea- tures. The passage from tho secoml to the third form is accomnanicd by au ecdyaia. The larviB are all, apparently, internal feeders, apodous and with minute mandibles. Those living in eggs transform into pupie within the empty egg shel) of their hosts; sometimes a half dozen ov more being found within a single egg-shell, although of the larger scelionids — Scelio, Maeroteleia, ete. — only a single specimen is founyhidi(Ue, gnaw a hole thiough the ventral surface of the aphis, and after securely fastening the aphid by a silk -like secretion to the leaf or twig upon which it has been feeding, pupate within the body of tlieir host, which, in lieu of a cocoon, affords ample protection for the larvae to undergo their transformations. I know of no proctotrypid that transforms loosely into a pupa without a covering or protection of some kind, as is fre- quently, if not invariably, the case amongst the Chalcididae. DISTRIBUTION. The Proctotrypidie are apparently widely distributed over the whole world, although outside of Europe little is as yet known of the exotic forms, and it is not possible, therefore, to generalize upon the genera and their distribution. From an examination of various exotic col- lections of Hymenoptera, it is safe to predict the species will be found to be numerous and widely distributed, but far less numerous than the Chalcididfe; judging from my own collecting I should say less than one-fiftieth in number. Only a very small percentage of the species is yet described. Our species, except in a few cases, fit very well into the established European genera; but from South America it was found necessary to erect many new genera, and doubtless this will be found to be neces- sary with collections brought from other regions. Very few species 22 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Ihave been described from Asia, Africa, ami Australia; only a few isolated descriptions of species, scattered here and there throujjh the literature, could be found; and undoubtedly nniny remarkable and interestinjj forms will be discovered in the rich insect faunas ot those countries. rLASSIFIf'ATION. The name of the family, Proctotrjpidse, is derive«l from the jrenns Proctotrupcs or Proctotrypes, established by Lat reille in his Pn'cis des Caracteres G^^m'-riques des Insectes, jmblished in 171U),and there placed with the Ichneumoniche. It is derived from two (rreek words -/jwxto-, the anus, + ziwzdw, bore, pierce thnmph, in allusiim to the structure of the ovipositor, and 1 here follow late auth<>rities in s])ellin}; the word Proctotrypes, although as a rule I strongly oi)pose changing a well- established zoiilogical name. From 179<» down to 1839 additional genera, belonging to this family, wer3 established by Latreille, Dalman, King, Jurine, Spinola, Nees, Westwood, Walker, Haliday, and others, and various groups or fam- ilies were proposed for their reception, according to the views of the different authors, the affinities of the genera not being fully under- stood. Some of the genera were classed with the Cynij)idje, Scoliidie, Mutillidje, Chalcidida', or Jiraconidic, or were considered to be entitled to fannly rank, and the greatest confusion existed as to their affinities asd proper positicm. An excellent historical sketch of the development of the family has been given by Dr. Arnold Forster, in h's Hymenopterologische Studien, Heft II, and it will suffice here to call attention only to the two authors who wrote just previous to his work. To them we are mainly indebted for a proper conception of the family, as now understood, as well as for bringing order out of the chaos that existed up to their time. I also call attention to a few authors who wrote subsequent to the appear- ance of Forster's work. In 1839 Haliday, in his " Hymenopterorum Synopsis," proi)erly de- fined some of the groups as now understood, although he considered them to be of family rank, placing some among the Teiebrantia and some among the Aculeata. In order to illustrate his method, I give below such portions of his scheme of arrangement as refer to them : .< •: Suborder 2. — Petioliventres. , . Stirps 3. — Terebellifera. ee. Troclianters exarticulati. Terebra abdominis apice exerenda per foramen apicale vel rimam transversam, ant exserta. Antennae articnlis ad sum- mum 15. Ala5 disco ferme exareolatse, radio et cabito distantibus ant obsoletis. MONOORAril OF THE NORTH amkkhan proctotrypid.e. 23 TrilMi 2.— OxYiiRA. /. Tiliin' iiiiticiu oalcarl iiiii«i>. (J. Maiuinmlii' oilvntiilii-. Fmii. m. — rrorloirupidir. ijij. Miiiiililtulii- ilciiliitic. /(. AImIoiihmi /(•»•. longiKHiiimiii, lilironin\ iirtiruliitniu. Fain. i>. — I'eleviniilif. Iili. Af>iliiiii«vii )>«iti<)latiiiii, iiiiiiiai'){inatuiii. Fain. 11. — IHapriathf. hhh. Al>iloiii«n inar^iiiatiitii, siiUhesMilt) atit Kiiliit»'tiolatiiiii. i'aiii. 1L'. — Stclionida: ff. Tiliiiii aiiticii) bitalrarata'. Fain . 1 \\. — Certiph ron iiUv. „ • * » • • •. Trihe I. — llnUicoplera. /. ( >H ('iialitatnni. Alii- annnstissinia', ncrvo lirevjHsinio. Faiii 1 7. — MiimarUhr. Stirjm I. — Avideutit. c. Antonna- ntriustjiie hoxus artifuliN codi'm niuncro. IVdes miblipveH. Aire poati- ca) inrisa-. Tribe 6. — ('ennptera. d. Antenna? lO-artirnlata'. Caput dotlexuni. Fani 1!). — Dryinido-. dd, AutennaD 12-13-artiiTe(;tnni. Hapacia. Larvjo entomo- pliag.i>. Fam 'M.—IlethyUidw. C'brysiilis inilo connexi, biuc ScoUadin. It will be seen from the above "scheme of arrangement" that Hal- iday widely separates some closely allied gronps, interpolating other families between them; and, moreover, with our larger and better ac- quaintance with these groups, the arrangement is unnatural and the characters he has employed, in defining them, will not now always hold good. About the same time, 1840, Prof. Westwood, in his memorable work, "Introduction to the Modern Classification of Insects," brought all of these families together and proi)erly united them as one, under the name Pioctotrupidie, lie then separates the family into six subfam- ilies, as follows: (1) Mymaridks. Head transverse aroolat« ; anteuniP inserted above the middle of the face, ,? long, sleuder, and elbowed, 2 clavate; mouth destitute of palpi; wings narrowed, densely ciliated, with a very short subcostal nerve. (2) Platvgasterides, Abdomen sessile, depressed, first segment not campanulate; autenuin elbowed, 10-12-jointed, inserted near the mouth. (3) Ceuaphuontides. Abdomen siibsessile, campanulate, terminal and ventral seg- ments carinated; antenna; elbowed, inserted near the mouth; wings nearly exareolate. 24 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. (4) GoNATOPiDES. Abdomen convex, not cami)auulate, last ventral segment cari- nated; anteunio porrected, 10-jointed; hind wings lobe;! ; mandibles toothed. (5) Proctotrupides. Abdomen subsessile, cauipannlate; antenniu porrected, 12- jointed, inserted beneath the front; maxillary lobe tripartite. (6) DiAPRiiDES. Abdomen petiolato, campanulated; antennte inserted on the front, 12- or 15-jointed ; maxillary palpi long, 5-jointod. His group (2) included the Sceliouina^ with tho Platygasterinai ; group (4) the Bethylinae, Embolemiuai and Dryininae^ while group (6) included the Belytinse and the Diapriinje. All the groups are undoubtedly closely related, and Westwood's scheme was the most natural one formulated up to the time of Forster. It was just sixteen years after the publication of Westwood's work that Di'. Forster's studies in tlie "Chalcidite uiul Proctotrupii," so often quoted in tliese pages, ai^peared. After an excellent historical review of the two groups, already referred to, he makes use of the fol- lowing characters to distinguish them : Chalcidi^e. ^ . Fiihler immcr gebrocheu, mit ein oder mehreren kleinen Ringelii (Zwischengliedern) zwischen Stielchen und Geissel. 5 . Der Legebohrer unterhalb (d. h. vor) der Spitze des Hinterloibs entepringend. Pkoctotrcpii. ^ . Fiihler gebrochen oder ungebrochen, zwischen dem Stielchen nnd der Geissel keine Ringel (Zwi8chenglieterous, and other inquilines, and it is believed the genus is parasitic on coleopterous larvfe. Species belonging to the genera Isobrachitim, Apenesia, and Pristocera have been taken in ant nests, and it is presumable they are parasitic on myrmecophilous Coleoi^tera. Anoxus is parasitic on the coleopterous genus Cis living in fungi, and I have reared Ateleopteriis tarsalis from raisins affected with Silranus )turina7n€n8is. The new genus LkUus is parasitic on the coleopterous family Der- mestid«, while species in the genera licthylus, Perisemus, and Gonioziis prey upon microlepidopterous larvje. Mr. A. II. Ilaliday, in Ent. Mag. vol. ii, p. 219, has recorded the fol- lowing observation in regard to an unknown Bethyhis: The insects of this genus seem fond of the flowers of Syngenesia, bnt their prin- cipal hannts arc in dry sandy districts near the sea. The low tufts of Rosa tpino- sistiima, flourishing among the sand cliffs, support numerous larvae of TineidaB, which when full fed often fall into the little pits of loose sand formed at the foot of the cliffs by the gradual scaling of the bank and the eddies of wind. These pits are com- MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 29 ])lcte traps lor various insectH, to which Myrmiea rubra and other predafcoiis species resort, and among these our liethyli will be seen prowling. On th<» 5th of last June I ol)tierved a female of th(! largest size occupied with oni; of those larvio which was full fed, and I should think about six times its own weight. It had seized this by the mouth, and was with great perseverance eiuleavoring to transport it up the sides of tlie pit. Perceiving that, though apparently not discouraged after ten minutes' inef- fectual exertion, it had no chance of succeeding, and wishing to trace its proceedings, I l>hiced a fragment of straw in the hollow within its reach. Tlio moment it had touched this railway the state of atTairs was changed ; taking a firm hold with its hind feet, it swung its prey round and set otf wjth it at .a si lart pace, walking backwards and dragging the body after it. From this time it was constantly endeavoring to ascend the face of tlie sand clitf, availing itself with admirable! ailroitness of morsels of grass, twigs, etc., embedded in it, not seeming to care how obli(![uely they lay, if they enabled it to gain a little elevation; so that its track was a zigzag. Fre- quently it chose stems, which, rising nearly erect, receded from the bank above. I first thought it was losing its labor, but it was at no loss how to act. After ascend- ing a few inches with the wliole weight stispenosition. When it ascended about two feet, it came upon a fragment of reed partly em- bedded in the sand, the st«'m of which was broken o! and open below, a few dry elastic shreds of the leaf only remaining. Having reached the jiart where these grew, it by a strong pull drew its burden about half through, till its body was grasped between two of these as in a vice; then letting go, it began to explore the bank on each side to some distance, tapping with its antenuie tlie conspicuous objects. In a few minutes, seeming to be satisfied, it hastily descended the reed, and entered its stem at the lower ind; it did not remain long in the interior, and on its reappearance set otf for the spot where it had left the larva, which, after pulling it ont of the holdfast, it seized by the mouth as usual and began to descend the reed a;^ i ; it did not complete the journey this time, but taking advantage of the same kind of security to detain its prey, it repeated the reconnaissance, then returning, dragged it to the opening, and leaving it there plunged in itself, but immediately reappearing drew in the larva head foremost, speedily disappearing in the interior; so that I could not observe its subsequent proceedings, and being obliged to turn homewards, I left them undistnrl)ed. I think, however, it will seem probable that the bore of the reed was employed instead of an artificial funnel for the cells which should contain the progeny of the Bethylus, with its store of provision. 30 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. This interesting observ^ation of Haliday's on the habits of a species in this group is quoted at length as being quite unique and contrary to the observations matle on the liabits of tlicse insects by all subse- quent writers. It probably iiiHuenced Ualiday into placing the Ueth- ylida^ among the Aculeata; but Ave can see from this observation that they are not true Aculeata, for the insect observed by Ualiday would unquestionably have stung the.larva into insensibility fas all Aculeata do|, before attempting to carry it to its cell. The genera and species are numerous and are widely distributed, being ftmiul in all i)arts of the world. It is believed that the following synoptic table, prepared with great care, will enable the genera of this difficult group to be readily determined by the student without recourse to the full generic de- scription : TABLE or (lENEKA. I'KMAI.KS. Wiuged 3 Wingless. With ocelli 2 Without ocelli ; antcniiin 13-joiiite«l. Metathorax much contracted or straiigiilatcMl at hase. Scutellnm present. Maxillary palpi 6-joiiite Anterior wings without marginal and stiginal vein. AntenniB 12-jointed ; no basal cell Cephalonomia Westw. Antennie 13-jointed ; one basal cell Ateleopterus Forster Anterior wings Avith a short linear marginal vein and a short radius. Two hasal cells about equal in length. Antenna? 13-jointed L.elics Ashni. gen. nov. Antenna^ 12-jointed Bkthvus Latr. 4. Basal nervure with a branch directed backwards, sometimes forming a small cell ; a parastigma 6 Basal nervure without a branch directed backwards; no parastigma. Anterior wings with an incomplete marginal cell 5 MONOGRAPH OF THK NORTH AMERICAN rUOCTOTRYPID^. 31 Antt-rior wiufjs with Ji couiplete marginal cell. Autennie 13-j()iuted. With 2 (liscoidiil cells Eupsenku-a Westw. With 1 (liscoidiil cell Sikrola Cameron 5. Mesonotal furrows distinct. Antennae 13-,jointod; maxillary palpi 6-jointed; lahiala 3-jointel>e. 202-6, id. iv (1><1<»), Westw. ThcH. Eiit. Oxoii, p. 162 (1874). (Typti /'. dipreHsa Fabr. ) Hesul, in i obloiig-ovul, convex with 3 ocelli; in 9 Ijirge, oblong quadrate, the ocelli wanting; tlu; eye.s very sniiill. Antenna? in both sexes 13 jointed, in $ lonj;*, tapering toward tips; the scape stout, curved, lumctate, the pedicel minute ; the flagellar joints are liliiorm or subtiliforni, trun(;ate at tip«5. three or four times longer than thick, hairy or pubescent; in 9 much shorter, submoniliforni, the last joint somewhat longer than the penultimate. Maxillary i)alpi C-jointed, long; labial palpi 3 jointed. Mandibles in S dilated at apex and crossing each other, 5-dentate, teeth acute, conical, the outer tooth large; in 9 stout, curved, the apex 3- or 4-dentate, the outer tooth large, obtuse. Thorax: Prothorax in i triangular, anteriorly subtruncate, deeply transversely impressed; mesonotum with 2 to 4 distinct furrows; meta- thorax convexJy rnunded posteriorly; in 9 the prothorax is subquad- rate, rounded anteriorly; niesothorax convexly rounded, with an im- pressed line on each side; the scutellum i^resent; metathorax usually more or less strongly contracted at sides towards the base. Front wings in $ with an oblong or oval stigma, an inconq)lete marginal, two basal, and one or two discoidal cells; and sometimes by holding the wing up to the light other cells uiay be seen; the second basal cell is a little longer than the first along the median nervure. The 9 is always wingless and very much smaller than the $ . Abdomen in the $ ovate, depressed, subpetiolated, the second and third segments longer than the others; in 9 , it is variable, usually greatly elongated, pointed at apex. Legs in $ rather long and not nearly so much swollen as in Epyris, Mesitius, etc.; the anterior femora a little thicker than the posterior, the anterior and middle tibitc shorter than their femora, armed with rigid bristles anteriorly; tibial spurs 1, 2, 2, the outer spur of hind tibife very long, the claws long curved, with a tooth within near base; in 9 shorter, stouter, the tibia; outwardly spiuulose, the claws simple, not toothed. MONOGRAPH OF THE NORTH AMERICAN PliOCTOTRYPID.E. 33 A well-defined fjenus, but the males easily coi fused with Epyris. The more stronjfly developed venation, the distinct, rhomboidal dis- coi'". Rufo-piceons, the abdomen paler, the head and thorax with coarse scattered punctures. Mandiltles 4-dentate P. ATRA Klug Smaller, 1""". Rufo-piceons, the abdomen darker, smooth, shining, impunc- tured. Mandibles 3-dentate P. armifkpa Say Pristocera atra King. (Pl.ii,Fig8.i, c?; 2, 9.) Web. n. Mohr Beitr. zur Natnr ii, 202, i scatten'd ]uiii(tiin's: inaiulibh's 4 *eent beneath. Antenn* and legs ])ale ferriiginons or brownish yellow. Mandibles with small teeth within I. MYKMECo riiii.UM, sp. nov. Mandibles very large and ))road without teeth within. I. MANDIHULARE, Ashm. Wings hyaline. Abdomen rufous, sometimes more or less piceous toward base above. Antenna- and legs pale ferruginous. Abdomen not longer than the thorax I. rckivkxtrk, sp. nov. Abdomen brownish-yellow. Abdomen elongate, much longer than head and thorax together. I. MONTAXIM 8]). nov. 3. Wings subhyaline. Blaek; legs pale ferruginous, the femora obfuseated above. I. FLOKIDANUM Ashm. femai.es. Head black, with large pnnctnres. Thorax dark brown, or mahogany. Abdomen not longer than the thorax, rufo-pieeons 1. myrmecopHilum Thorax rufous. Abdomen brownish-yellow, nnich longer than the head and thor >;: nnited. I. montanum Hea«l piceous. i. Thorax rufopiceous. AlKlomen brownish-yellow, hmger than the liestd and thorax together. I. mandiiu:lare Isobrachium magnum sp. nov. $ . — Length nearly 5""", Bla<'k, punctate; head a little longer than wide, rather strongly ])unctate, the surfiu-e alutaceous. Antenna? 13- jointed, brownish-yellow , tlie liagellar joints from 2 to 2 J times as long MONOGRAPH OF THE NORTH AMEKICAN PKOCTOTUYPH)^. 37 as thirk, t\w last Joint twi<'»^ as loiij; as the penultimat*'. Thorax aiiti'iiurly narrowed, tluH-oUar brownish, thr iiu'sonoluin with 1 «;rves, the iniihlh' furrows nioiv or less iridistiiut ami al)lne\ iated i)osterioily, tlie stutelluiu with a transverse furrow at base, the nietathorax twiee as lonj; as wide, rujjulose, with a median carina. Winjjs subhyaline, the stijjina anwhat dusky. Abdomen oval, piceous-black, the apical eiljjes of the segments testaceous. IIahitat.— Spokane Falls, Wash. Type S in Coll. Ashnu'ad. The larjfcst 8pearated from the nietathorax by a strong constriction, trilobed but without a scutellum ; the metathorax is scan'ely larger than tlie middle mesothoracic lobe. Legs pale brown- ish-yellow, stout, the middle tibia'- strongly spinous; all tarsi longer than their tibia;. Abdomen oblong oval, brownish pice(ms, much shorter than the thorax, smooth, impnnctured, sparsely pilose. i . — Length 3 to 3.5'""'. Black, punctate; head oblong, with a thim- ble-like punctuation, mandibles rufous, antenuiB and legs pale brown- ish-yellow, collar pale anteriorly; abdomen jHceous, paler at sutures. Antenna; 13-jointed, extending to base of scutellum, the flagellar joints not quite twice as long as thick. Thorax with 4 grooved lines, the middle pair parallel, abbreviated posteriorly; those on the shoulder abbreviated anteriorly. Metathorax long, minutely shagreened with a central longitudinal carina. Wings hyaline, the stigma and sub- costal nervure pale brownish, the other nervures subhyaline; the radius is very long, almost reaching to the apex of the wing, the transverse hiedian nervure, oblique, interstitial with the basal. Habitat. — Pennsylvania, District of Columbia, Montana, and Ari- feona. Types in Coll. Ashmead. 38 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. This species lias been taken from tlie ne.sts of the ant Formica rufi- barbishy II.(l. Ilubbanl, at Ft. Assiniboine, Mont., and is also associated with ants under stones, at Wasliinjiton, D. C, and at Beatty, Pa. Isobrachium luandibulare Hp. nov. 9 . — Length, S..")""". Closely allied to /. rifjiventre and closely re- semblin*;^ it: Head brown, not so distinctly imnctate, the outer tooth of mandibles longer, the inner tooth subobsolete; eyes entirely wanting ; legs yeHow, the anterior tibia' at base dnsky; middle tibiae strongly spinous. The abdomen is long and measures 2""" ; it is brownish-yel- low, except the short petiole, whi<'h is black. The 13-jointed antenme are nearly twice the length of the oblong head; scape half the length of the head, much uarrowed at base: last flagellar joint twice as long as the penultimate, rounded at tip. S . — Length 3.6"'™. Black and agreeing in color and structure with I. myrmecophllum, excei)t as follows: The head is a little broader; the antenna? a little stouter and shorter, the flagellar joints scarcely 1^ times as long as thick; mandibles very large and broad, brownish-yel- low; there are no teeth within after the second tooth which is small, while the doisum of the metathorax, except at base, is smooth and shining. Habitat.— District of Columbia and Fort George, Fla. Types in ('oil. Ashmead. Both, sexes of this species were taken together in the nests of Cam- ponotiis penusyhmnieus. May 27, 18&], by Mr. Theo. Pergande. Isobrachium rufiventre sp. nov. 9 . — Length, 3.5 to 4""". Head variable, from piceous to black, about twice as long as wide, with scattered punctures; eyes wanting; thorax brown; antenna', legs, and abdomen brownish-yellow. The mandibles are large, crossing each other at tips, and terminate in 3 black teeth, the two outer large, eipial, the inner one small. Antenuie 13-jointed, 1^ times as long as the head; scape st nov. 9 . — Length, 5 '"">. Head oblong, twice as long as wide, piceous black, punctate, very faintly pubescent, l^^yes and ocelli wanting. Mandi- bles rufous ending in 2 black teeth. Antennje 13-jointed, brownish yellow, the scape less than half the length of the flagellum; pedicel longer than the first funiclar joint; Hagellar joints, except the first and last, a little wider than long, the last joint f>blong. Abdomen much longer than the hea. 169. Sclerochroa Forster Hym. Stud., ii, p. 168 (1856). Head large, subquadrate, above convex; eyes in ? small, the ocelli wanting; in S , eyes and ocelli normal. Antenna' 13-jointed, longer in the S , shorter and more incrassated in the 9 . Maxillary palpi short, 5-jointed, the apical joints slender ; labial palpi 3-jointed, Mandibles small, obtuse at apex, 4-dentate. Thorax elongate, the prothorax large, triangular or semiovate; me- sonotum scutelliform; metathorax oblong, in 9 narrowed basally. Front wings in S without a stigma or stigmal vein, and with only 2 short basal cells, the other cells entirely obliterated; 9 apterous. Abdomen in i ovate, in 9 greatly elongated, cylindrical aud pointed at apex. Legs short, thick, the femora much swollen, tibial spurs 1, 2, 2; claws simple. The characters of the male suflBciently separate this genus from other forms, but to distinguish the females from those in closely allied genera is (juite difficult. T am convinced that many females described under this genus, by European authorities, do not i>roi)erly belong in it, but will be found to belong to other genera, i. e., Pristocera, Isohrachinvi, and IHssomphalus, as the mouth parts can not always be stitisfactorily examined. . , , /. Only a single species is known in our fauna, as follows: Scleroderma macrogaster A slim. (PI. II, Fig. 6, 9.) Sclerochroa niacrogaater Ashui. Ent. Am., in, p. 75, $ ; Cress. Syu. Hym., p. 247. 9. — Length, 3'""'. Head oblong-quadrate, black, polishetl; thorax and legs rufo-piceous, the knees and tarsi, honey-yellow; metathorax honey-yeHow ; abdomen black. Antenna? 13-jointed, honey-yellow, one- fourth longer than the head, the scajic about one-third the length of MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPIDiE. 41 the flagerium, curved, uarrowed at the base, the joints of the flagellum uot longer than thick. Ab(h)meu elongate, poiuted-ovate, two and a half times longer than the thorax, black, highly polished, with a few hairs at tip, the first and third segments about equal, the second slightly shorter. Habitat. — Jacksonville, Fla. . Type in Coll. Ashmea«l. DISSOMPHALUS Aishiiieiul ^en. nov. (Type 1). xanthopuH.) Head in $ oval, very little longer than wide, with a long frontal carina; eyes oblong-oval, extending to base of mandible, nearly bare, or with few bristles ; ocelli 3, distinct ; in 9 head oblong; eyes small oval ; ocelli wanting. Anteniue inserted rather far apart, 13-jointed, filiform, submonili- form, the first flagellar joint always smaller than the second. Maxillary i>alpi 4-jointed; labial palpi 3-jointed. Mandibles not very broad at tips, truncate, with 4 teeth. Thorax in $ subovate, the prothorax not very long, constricted into a collar anteriorly, tlie pronotum usually very short; mesonotum with or without furrows; scutellum with a transverse impressed line at base ; metathorax subquadrate, truncate behind but the angles rounded ; in 9 with the prothorax long, narrowed anteriorly; scutellum distinct; metathorax quadrate, very slightly contracted at base. Front w ings in $ with two basal cells of an equal length, the trans- verse medial nervure being straight, an obloug-quadrate stigma and a long stigmal vein ; 9 always apterous. Legs in $ slender, the femora not much swollen; tibial spurs 1, 2, 2; tarsi a little longer than the tibiie, the basal joint nearly as long as the remaining joints united; in 9 with the femora swollen, the tibiie not spinous. Abdomen in i oval or rotund, depre8se«l, subpetiolate, the second body segment always the longest and with two very small, round, wart-like cubercles, usually covered with short hairs, sometimes placetl in a fovea or depression and variously situated, being sometimes close together or widely separated; in 9 long, cylindric-ovate, the apical margins of segments 3 to 5 more or less emarginate or sinuate. This new genus can always be distinguished in the male sex by the two minute wart-like, pubescent tubercles on the second abdominal segment and by the straight transverse median nervure; otherwise it bears a close resemblance to Isobrachhim. It agrees with that genus, in having the eyes extending close to the mandibles, in its mesonotal characters, and in having (comparatively) slender legs; but besides the differences already mentioned, which are sufficient to distinguish 42 BILLETIN 43, UNITED STATES NATIONAL MUSEUM. it, it ditieis in the more slender, 4-de,iitate inaiidibles, in having 4-joiiited maxilhii y pali»i, and a shorter nietathorax. The female resembles Pristocera and Scleroilerma, but the maxillary palpi are 4, the labial 3-j()inted, tht^ S(?utellnm distinct, while the nieta- thorax is quadrate, not or scarcely contra(rted at base, the middle tibia; not spinous. Four species are known to nw in the nnile sex frpus sp. nov. Legs yellow, the hind coxie black or black basally; head shining, feebly punctulate, with a frontal furrow D. californicus sp. nov. 2. Abdomen black. Thorax, legs and anteun:e testaceous; he.ad rufo-testaceous D. xanthopits Thorax, legs, and anteunie brownish-yellow ; h«ad blackish. . . . D. carolinensis Dissomphalus zanthopus sp. nov. (Pl.ii,Figs.7, ecimens. MONOGRAPH OF THE NORTH AMEkiOAN PROCTOTRYPID.E. 43 DisBomphalus califoiuicus »|>. iiuv. i. — Lenj^th 3""". HliU'k, shining; tlie In I but feebly puuctured, with ii Inmtal depression before the front o(»lhi.s; thorax with li fur- rows; mandibles rufous; palpi whitish; legs brownish yellow; thepos- teri«)r coxse black basally ; the hind femora dusky above. Antenuie 13- joiuted, fus<'Ous, the scape and pedicel yeUow; the tirst flagellar joint very small, only half the length of the pedicel; the three or four fol- h)wing scarcely longer than thick; those beyond longer, all densely covered with a short pubescence. Metathorax subcpiadrate, dorsally, except Just at tij), rugose, with a median carina. Wings hyaline, the venation pale yellowish ; the stigma is thrice as long as thick, truncate at apex. Abdomen oval, scarcely half the length of the thorax, black, shining; the two small tubercles on the second segment are wide apart, placed near the basal angles. Habitat. — California. Type $ in Coll. American Entomological Society. Described from a single specimen. Distinguished from xanthopus by the sculpture of the head, color and relative lengths of the Joints of the antennje, longer thorax, color of the hind legs, shori^i-, oval abdomen, and in the position of the two tubercles on the second abdonuual segment. Dissomphalus carolinensis sp. iiov. 9. — Length 2.(>'""'. Polished, impunctate; head oblong-quadrate, piceous black; antennie 13-Jointed, not longer than the head, brownish yellow, the fiagellum slightly dusky toward apex and very slightly incrassated; the scape is less than half as long as the fiagellum and stouter; pedicel larger than the three following Joints united, which are small and not longer than thick; the Joints beyond these to the last are wider than long; the last joint longer than the penultimate. Thorax and legs brownish-yellow; the tarsi pale; metathorax quad- rate, impressed laterally to the middle coxa\ Abdomen black, polished, conic-ovate, as h)ng as the head and thorax united, tlu^ incisions pule, the apical margins of segments 3 to 6 slightly emarginate. Habitat.— North C!arolina. Tyi>e in Berlin Museum. Described from a single specimen, labeled "Carolina, Zimmermann." ATBLBOPTBRUS Forht^r. Verb. tl. Natiirb. Ver. Preuss. Kheinl., 1851, p. 5, Tab. i, f. 1, alaj. (Typo J, Forstvri Kivchner , edicel IJ times as long as thick, and much [larger than any of the following joints, the flagellar joints closely united, Avider than long. Pronotum a little h)nger than wide, narrower than fhe head and longer than the mesonotuni and seutellum united ; mes- )notum about half as long as the seutellum, smooth without furrows; ■seutellum with 2 fovesB at base; metanotum long, quadrate, with the Udes margined and a central carina. Wings hyaline, the venation jrowuish. Abdomen conic-ovate, much wider than the thorax, but 46 BULLirriN 45, united states national mijseim. not or Si-arcely longer, iK^rfoetly sinootli and shiny, with ;« tine sparse pnboscence. The S nieasnres searcely l./i""", and ditlers from tlie 2 as follows: The head is more rounded; the liaj;ellar.i(»ints are a little lonjjer than wide, Avhile the abdomen is shorter and more nearly oval, or short ovate. Habitat. — VVasliinfjt<)n, 1). (J., and Lafayette, Ind. Types in Coll. Ashmead. I first rearee .1. amazoniva Westw.) (PI. ni, Fiji. 4, 9.) Head large oblong or subquadrate, flattened; eyes in 5 minute and composed of only a few hexagons; ocelli wanting; clypeus anteriorly trituberculated ; in the S the eyes are normal and the ocelli are present. Antenna; 13-jointed, short, the tirst joint long, the s**cond a little longer than the third, the following short ; in the S the flagellar joints after the second are a little longer. Maxillary palpi deformed, 4-jointed; labial palpi 3-jointed. Mandibles slender, curved, armed at apex with two large teeth. Thorax in ? elongate, the prothorax large, suboval; mesothorax short, the dorsum subcordate ; metathorax oblong, contracted near the base, the angles rounded ; in S elongate, the pronotum very long, nar- rowed anteriorly, the mesonotum with one distinct furrow, the meta- thorax quadrate. Wings in S similar to Epyrin, the stigma very minute, the radius very long and slender. Abdomen in 9 elongate oval, in $ ovate. Legs in $ short, thick, fossorial, middle tibise compressed and spin- ous, the anterior tibia; terminating in two spurs and the basal joint of the tarsus is lunate and armed on the under side with a row of very fine short bristles; the middle legs, on the contrary, are very robust, the tibiae strongly serrated on the outer mi^rgin and the spurs finely spined; in the middle legs the tarsi are longer than the tibite and have the under side of the three basal joints finely spined. The slender, bidentate mandibles and 4-jointed deformed maxillary pal]>i,sufticiently distinguish the female of this genus from other wing- less genera. The male, which is here described for the first time, comes nearer to the genus DisHomjthalu« than to any other, but the mandibles MONOGRAPH OF THE NOUTH AMEHK AN IMtOCTOTKYIMD.E. 47 are longer and more .slender, bidentate and cross each other at tips; the head is quite dittereutly shaped, being nnich longer, a little wider anteriorly than iKJsteriorly ; thci pronotnni wholly different; the nies«) notuni much shorter and without furrows; the abdominal segments similar, but without the warty-like tubercles on the second segment; while the venation of the wing is quite different, the stigma being minute, the radius very long and slender, the basal cells slightly sub equal in length. Apenesia coronata, sp. uov. (PI. Ill, Fig. 3, <^.) S. Length, 3""". Black, shining, alutaceous; mandibles long, slen- der, crossing each other at tips, bidentate, rufous; antenuie 13 Jointed brown; pedicel longer than the first flagellar Joint, joints 1 and 2 of Hagellum ecjual, a little longer than thick, Joint 3 a little longer, those be- yond somewhat longer than the third ; head nearly twice as long as wide, a little wider before than behind, the vertex with several blister like elevations. Thorax smooth, w ithout furrows, the pronotum nearly three times the length of the mesonotum, narrowed before; scutellum sepa- rated from the mesonotum by a delicate transverse furrow at base; metathorax quadrate, with a longitudinal median carina. Wings hyaline, the venation pale brownish, the stigma minute, the stigmal nervure very long and slender; basal cells two, nearly equal. Legs black, the tibia', except at tips, piceous, tips of tibia' and tarsi pale or whitish. Abdomen ovate, depressed, i)olished black, about as long as the thorax. Habitat.— Bladensburg, Md. Type in Coll. Ashmead. For the single specimen of this rare insect, the first male to be de- scribed in the genus and the first species to be detected in the United States, I am indebted to my friend Mr. E. A. Schwarz, who captured it at Bladensburg, July 20, 1890. CEPHALONOMIA Westw. Loud. Mag. Nat. Hist., \i, p. 420, [1833] ; Syn. Holopeaina. Ffirst., Verb, naturh. Ver., prenss. Rlieiiil.,7. Jahrg., p. 502 (18.50); Forst., Hym. Stud., ii, p. 125, 1856. (Type r'./V>rH(te(/'o>vH(8 Westw.) Head in 9 large, oblong-quadrate, flattened, in ^ more rounded; the ocelli in the winged form, in both sexes, present; in the wingless female absent. Antenna? 12-Jointed, the pedicel larger than the first flagellar Joint, in S filiform, nearly the length of the thorax, in 9 not or scarcely longer than the head, submoniliform^ not incrassated toward tips. Maxillary palpi 4-jointed ; labial palpi 3-Jointed. Mandibles 3-dentate. Thorax elongate ovate, the prothorax large and triangular, narrowed 48 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. or I'DiiiKled in front; njesonotuni short, without furrows; stMitellum witli a transverse furrow iit base; metathorax subquadrate, rounded bcliind. Front winps with a very short subm.arginal vein, terminating in a callous spot and a small stijrma; costal rell open; the stigmal vein and basal eells wanting. The 5 is usually apterous without ocelli, although sometimes winged with the venation as in the m-ile. Abdomen ovate or oval, subpetiolate, the second and third segments large, about equal, the following short, the posterior apical margins of the segments usually straight. Legs short, stout, the femora swollen, the anterior pair larger than the others, tibial spurs, 1, 2, 2, claws simple. For many yetirs the true position of this genus was obscure. Prof. Westwood in his original description stated jt was allied to Teleas, and Forster, as late as 1856, in his Hyraenopterologische Studien, without a personal acquaintance with it, incorporated it among the Diapriina'. It has been fully elucidated since, however, and properly placed by Westwood in the Iicthylin(v, details of which will be found in the Pro- ceedings of the London Entomological Society for 1881, p. 125. The degraded type of venation and the absence of basal cells readily distinguish tlie winged form from other genera in the group ; but with the apterous forms it is quite diflferent, and great care must be taken to examine the mouth parts for the characters laid down in the table, or one is apt to confuse them with Scleroderma. Only three species a^e known in our fauna, which may be tabulated as follows : Winged 2 Wingless, without ocelli. Entirely brownish yellow or honey -yellow V. fiALLicoLA Ashm. Head, thorax, and legs rufo-testaceous, the collar anteriorly and the meta- thorax waxy white. Abdomen black C cynipipiiila Ashui. 2. Polished black ; legs piceous. Wings hyaline C. iiyalinipennis sp. nov. Rufo-testaceous, collar and base of abdomen yellowish. Wings Hubbyaline C. nubilipennis Ashm. Cephalonomia gallicola Ashm. (PI. Ill, Fig. 6, 9.) Sclerochroa gallicola Ashm., Ent. Am., iir, p. 75, S ; Cress., Syn. Hym., p. 247. 9 . — Length, 1.8™"*. Honey- yellow or pale brownish-yellow, smooth, polished. Eyes small, round. Antennje 12-jointed, about as long as the head ; scape one- third the length of the head; pedicel a little longer than thick ; the flagellar joints all small, submoniliform. Abdomen pointed, ovat*, a little longer than the head and thorax united ;^ the apical margins of the second and third segments slightly emarginate. Habitat. — Jacksonville, Fla. Type ? in GoU, Ashmead. MONOGRAPH Of THE NORTH AMERICAN PROCTOTRYPID.E. 49 My specimens were bred from a cynipidous oak fjall {Andricm folia- tits j\.shm.),:md is probably parasitic on some coleopterous larva in- habiting the gall. Cephalonomia cyniplphlla AMhiii. Sclerochroa cynipiiiphila Ashm., loc. cit., ii, p. 75; (Jress., Syu. Hyin., p. 247. 9 . — Length, 2'"'". Head, thorax, and legs rufo-testaceoiis, the collar anteriorly and the nietathorax waxy white, the abdomen black, pol- ished. Antennic lli-Jointed, a Httle longer than the oblong head; sciii)e slightly longer than one-third the length of the head, bent, nar- rowed at base; pedicel twice as long as thick; tlagellum very slightly thickened at the middle, the first two joints very small, not longer than thick, the following wider than long. Habitat. — rTacksonville, Fla. Type in Coll. Ashmead. Bred from a cynipidous oak gall {Holcmpis omnivora Ashm.). It is not necessarily parasitic on the cynipid, as other insects, dipterous, lepidopterous and coleopterous, were also reared from the gall. Cephalonomia hyalinipennis, sp. nov. (Pl.m, Fig.5, ediccl longer than the tirst tlagellar Joint; second Hagellar joint slightly shorter than the first; those beyond nearly equal, (luadrate. Thorax elongate, the pro- notum three or more times as long as the mesouotum, the scutellum with a transverse impressed line at base. All coxie bla«*k; all femora, except tips, black or i»i»eous brown, the trochanters, tibiie, and tarsi, honey yellow. Wings hyaline, the venation yellowish. Abdomen a little longer than the thorax, pointe. nov. S 5. Length 2.5 to 2.9""". Black; legs, except coxse, and antenna?, brownish yellow. AntennsB 13-jointed, twice as long as the head, the pedicel and first flagellar joint about equal, the following shorter but still all longer than thick. Mesonotum very short, without furrows. Scutellum with a transverse fovea across the base. Metathorax longer than wide, transversely rugulose, with 3 carinae on the disk. Wings hyaline, the venation pale yellowish ; marginal and stigmal nervures very short, scarcely developed. Habitat. — District of Columbia and Florida. Types in Coll. Ashmead. , This species is readily distinguished by the three longitudinal metii- thoracic carinae and by the anterior coxa; being always black. It comes nearest to L. nigripilosiis, and like that species is sparsely covered with long blaick hairs. Laeliua rufipes, sp. nov. 9 . Length 3°"". Black, shining, alutaceous, sparsely pilose; anten- nae 13-jointed, brown ; three basal joints, mandibles, palpi, and legs rufous. Metathorax with 4 longitudinal carinae on the disk, the surface rugulose. Abdomen pointed ovate, shorter than the thorax, polished 52 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. black, sparsely pilose. Wings hyaline or but faintly tinged, the vena- tion pale, the marginal and stigmal nervures but slightly devel<)i)ed. The antenuiB are rather long, the scape 2^ times the length of the i)edi- cel; first flagellar Joint shorter than the pedicel, the joints beyond all longer than thick. Habitat. — Western States. Types in National ]Museum and- Coll. Ashmead. Laelius nigripilosus, up. nov. (PI. III. Fig. 7, 5.) S 9 . Length l.S to 2.5'"'". Black, shining, faintly alutaceous, the head in the 9 much wider than in the S , similar to the head in Gonio- zus. Mandibles in 9 black, in i rufous. Antenna? 13-jointed, pale brown; flagellar joints 1 to 3 nearly equal, about twice as long as thick, the following shorter; in the 9 the ttageilum is stouter and the joints shorter than in the S . Mesonotum with 2 delicate furrows, in- distinct or wanting in the male. ScuteUum with a distinct transverse farrow at base. Metathorax subquadrate, the dorsum with a single central carina and with a scaly punctuation. Wings grayish-hyaline, the nervures yellowish or ])ale, the marginal and radius very short, scarcely developed. Legs ferruginous or reddish -yellow. Abdomen in 9 conic-ovate, about as long as the head and thorax united, subpe- tiolate; in $ ovate, much shorter than the thorax. Both sexes are covered with long, sparse black hairs, more apparent in the male, and denser on the head and towards apex of abdomen. Habitat. — Jacksonville, Fla. Types in Coll. Ashmead. BETHYLUS Latreille. Hist. Nat., Ill, 315 (1802) ; Forster, Ilyui. Stud., ii, 96 (1856). (Type li. ctnopterm Pauz.) Head oblong, smooth; eyes broadly oval or rounded; ocelli 3, distinct, prominent. Antennpe 12-jointed, filiform, moniliform, or setaceous; scape very short; pedicel in 9 a little longer than the first flagellar joint, in $ shorter. Maxillary palpi 6-joiiited ; labial palpi 3-jointed. Mandibles short, curved, not very broad at tips, truncate, with 3 or 4 small teeth, the outer acute. Thorax subovate; the prothorax triangular, rounded in front; me- sonotum most frequently without furrows; short, transverse; metatho- rax usually with delicate longitudinal keels, the apex subtruncate. Front wings with a very small marginal vein, a short stigmal vein, and two basal cells of an erjual length; no traces of other veins or cells. Abdomen ovate, pointed at tip, the third segment the longest, the apical margins of the segments straight. Legs short, stout, the femora much swollen, the anterior pair the MONOGRAPH OF THE NORTH AMERICAN PROCTOTRVPID^. 53 stoutest, the tarsi not or scarcely longer tliau tlie tibiae, slender, claws simple. This genus, the type of the subfamily, is of small extent, few species in it having been discovered either in Euroi)e or America. It resembles my genus LwUuh in venation, but the 12-joiuted auteu- na; and the G-jointed palpi readily distinguisli it. Our species may be tabulated as follows: TABLE OP^ SPEriES. KEMALKS. Abdomen with a strimj; constriotiou between the third and fourth segments. Lejjs, except ciixie, reddisli-ycllow H. CONSTKICTIIS, sp. nov. Abolished black, with a slight projecting point at apex. Habitat. — Indiana, Colorado, and Florida. Specimens in Coll. Ashmead. EUPSENELLA Westwood. Thes. Ent. Oxon. p. 168 (1874). (Type, E. agilia Westw.) (PI. IV, Fig. 1, black ; antenna; and legs rufous. , . Wings subfuscous. Metatborax with many longitudinal raised lines and irregular crosslines be- tween; apex of abdomen rufous E. ANALisCr. All coxffi and legs rufous or honey-yellow. Wings subhyaline. . :" » Head not unusually large or broad. ^- Metathoraz with 6 or 8 raised longitudinal lines. ^.:^__. Head and thorax black. -_ — Mesopleurafoveated; mandibles 5-dentate E. RUFIPES, Sfty. Mesoplenra areolated ; mandibles G-deniate E. columbianus, sp. nov. Heaubes(!enee ; head subquadrate, flattened, rather dosely and finely punctured; mandibles dark ferruj;inous; palpi whitish; antennae short, robiist, ferruginous; pro and mesothorax sparsely and linelyi)uuctured; motathorax black, quadrate, abrupt later- ally and abruptly truncate at tij), above minutely and transversely aci- culated, the disk with 4 or 5 approximate lonj>itudinal cariuii', posterior face transversi'ly aciculated, the sides longitudinally so; tej;:ulie ferrugi- uous, wings tinged with yellowish-fuscous; legs short, robust, pale ferruginous, anterior coxa^ black, all the femora incrassated; abdomen elongate ovate, smooth and jmlished, black, immaculate, apex ferru- ginous. Habitat. — Texas. Type in Coll. American Entomological Society. Epyris nifipes, Say. Bethylus nifipes Say, Lee. Ed. Say's Works i, p. 221. Epyris rnfipes Cr. Trans. Am. Ent. Soc. iv, p. 193; Asbm. Ent. Am. Ill, p. 76; Cr. Syn. Hym., p. 247. 9. Length 4"'™. Black; head large, with sparse punctures; eyes hairy; mandibles large, broad, rufous, 6-deiitate ; legs and antenna? ru- fous, the latter a little dusky at tips. Antenna' 13-jointed, long, the S(;ape as long as the first three flagellar joints together; flagellum tapering ofl^" at tip, the first joint the smallest, the others all much longer than thick. Thorax coriaceous, the meta- thorax with longitudinal raised lines, the surface between transversely rugulose. Wings subhyaliue, the nervures brownish, the radius very long. Abdomen ovate, pointed at tip, sparsely hairy, black and polished, the extreme apical edges of segments 3 to 6 rufous. Habitat. — Indiana and Southern States. Specimens in Coll. American Entomological Society and Coll. Ash- mead. Epyris columbianus, sp. nov. 9 . Length 5""". Black, shining, coriac-eous ; head sparsely punctate, mandibles rufous, large, 6-deutate; antennae, except flagellum, legs and tegulai rufous; flagellum dusky; wings subfuscous. Metathorax with 5 longitudinal carina^ on the disk, the two between the central and the outer abbreviated, the outer curving outwardly towards apex, the sur- face transversely rugulose. The $ is only 4°"° in length, and agrees with the female, except that the antenna? are longer, the flagellar joints being 2J times as long as thick, the thorax with some sparse punctures, the abdomen elongate, MONOGRAPH OF THE NORTH AMKRICAN PKOCTOTRYPID.E. fil the second, third, and fifth joints about wjual, the fourth beiuj? only half the h'n<;th of the third, IlAHiTAT. — Washinj^ton, 1). C, and Jacksonville, Fla. Types in Coll. Ashineaol- ished, the se<'ond sej;nient the longest. Wings hyaline, veins brown; the second basal cell is half the length of the basal nervurc longer than the first, the radius very long, as long as the second basal cell. Habitat. — Wales ('anyon, Colorado. Tyi)e Type 9 in Coll. Ashmead. -.■-.-. . r r Described from a single specimen received from W. Hague Harring- ton. ' :.L: _ ^ MesitiuB nevadensls sp. nnv. 9 . Length 6""". Very close to M. vancouverensis, but differs as fol- lows: The legs, except the front coxa? and femora, are rufous, the mid- dle and posterior femora rufo-piceous ; mandibles terminating in a MONOGKAPH OF THE NOItTIl AMEKU'AN PKOCTOTRVriDiE. 65 loiif? I)lmit t(»otli, tlu' surfiUMi within <»htu.H<% scarcely (leiiticiiliitc, whilo tlir lla^'elliir joints, after the lirst, are twice as lonj; as thick. IIaiutat. — Nevada. Type 9 in (JoII. Ashniead. Described from a sinnh' specimen. MesitiuB minutUB, Hp. nov. S . Length, 2.2""". Hhick, shining, the surface minutely coriaceons, very finely sparsely pubescent. Head a little longer than broad across tlie eyes. Mandibles rufous, not broadened at tips, the outer tooth acut<\ followed by about 4 very minnte denticulations. Antenna? 13- jointed, long, brown; scape stout, not more than twice as long as thick and very little longer than the first funiclar joint; pedicel and first funiclar joint about equal; the remaining joints longer, fully thrice as long as thick. Prothorax twice as long as the mesonotum, rounded anteriorly; mesonotum with 2 furrows more deeply imi>ressed iM)ster- iorly; scutellum with two oblique fovete opposite the mesonotal fur- rows; metathorax sub(|uadrate, the posterior angles a little rounded, minutely coriaceous, with a median longitudinal carina and some very sh(n t raised lines at base. Teguhe brownish-yellow. Wings hyaline, the venation yellowish or pale; the trausvetse medial nervure curved outwardly. Legs rufous, coxie and anterior femora bhick, the middle and posterior femora fuscous. Abdomen polished black, shorter than the thorax, the third segment one-third longer than the fourth. Habitat. — Arlington, Va. Type 6 in Coll. Ashmead. Described from a single specimen. Mealtius californicus, dp. nov. 9 . Length, 3.1 '"•". Polished black, the head alutaceous. Head oblong, 1^ times as long as broad, the eyes whitish. Mandibles brown- ish-yellow, truncate but not broadened at apex, the outer tooth su^ute, followed by about 4 minute teeth. Antennje 13-jointcd, extending to the tegnlie ; scape stout, piceous, as long as the three following joints united, a little curved and narrowed at base ; fiagellum brown, tapering towards tip; pedicel and first flagellar joint about eipial, the following joints li times as long as thick, the last longer. Prothorax fully thrice as long as the metanotum, rounded before; mesonotum with 2 nearly parallel furrows and a delicate short line on the scapula; ; scutellum with 2 oblique fovesti at base; metathorax about li times as long as wide, minutely sculptured with a median carina and some faint, short, irregular raised lines at base. Wings hyaline, very faintly tinged, the iiervures brown, the venation as in couveremiH. Legs rufous, coxse and anterior femora black, middle and posterior femora more or less piceous. Abdomen oblong ovate, nearly as long as the thorax, black, 21899— No. 45 5 6S BULLETIN 45, UNITED STATES NATIONAL MUSEUM. sparsely pilose, especially iit tip; the extreme apical margins of seg- ments very slightly rufous. Habitat. — California. Types 9 in Coll. Ashmead and National Museum. Described from several specimens. Mesitius bifoveolatus, sp. nov. 9 . Length, 5.5"'"'. Polished black, impunctured, the surface micro- scopically alutaceous; antenna?, mandibles, and legs entirely rufous. Head about one and a half times as long as wide. The outer tooth of mandibles large, acute. Antennje 13-jointed, reaching to the teguhe, twisted; the scape swollen, as long as the 4 following joints; i)edicel longer but slightly narrower than the first Uagellar joint; the llagellar joints very slightly but gradually increasing in length, the first wider than loiig, the last very slightly more than twice as long as thick. Prothorax three and a half times as long as the mesonotum, rounded before, the superior edge of collar rufous; mesonotum with 2 distinct furrows on a delicate line (ni the scapula;; scutellum with 2 obli«jue foveie at base; metathorax quadrate, with numerous raised lineations at the middle and base, almost smooth towards the lateral margins, the truncate sides and apex microscopically striated. Teguhe yellow. Wings subhyaline, the venation yellow and as in vancourereima. Ab- domen pointed ovate, mu(!h shorter than the thorax, ])olished black, pilose towards apex and with the extreme edges of apical margins of the last three or four segments rufous. The S is from 3.5 to 4""" long and is recognized at once by the long fuscous antenme, as long, or nearly as long, as the body, the first flagellar joint being half again as long as the pedicel, the joints beyond fully four times as long as thick, the last 5 or times as long as thick, and by the more fuscous wings; otherwise it is quite similar. Habitat. — Georgia, Florida, Canada. Types in National Museum and Coll. AvsLmead. Described from several specimens. Mesitius brachypterus, sp. hot. 9 . Length, 3.6'""'. Polished black, with only a few scattered punc- tures on the head and prothorax. Head oblong, one-fourth longer than wide. Antennie 13 jointed, pale ferruginous, about twice as long as the bead; scape as long as the first three joints of the flagellum united; pedicel a little longer than Avide; first flagellar joint not longer tliau wide and narrower than the foUowing j(»ints, which are slightly longer than thick. Prothorax long, as long as the head; mesonotum very short, scarcely as long as the scutellum, Avith 2 delicate furrows con- veiging posteriorly and terminating in a rounded puncture before at- taining the posterior margin; scutellum with 2 oblique fovejc at base; metathorax quadrate, finely shagreened at base, with a faint median MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 67 loiijjitudinal cariua. Wings not fully developed, reaching only to the tip of the first abdominal segment. Legs rufous, the anterior femora above slightly fuscous. Abdomen i)ointed ovate, black, shining, sparsely pilose, tlie apical margins of the segments tinged with rufous. Habitat. — Carolina. Type 9 in Berlin Museum. Described from a single specimen, labeled ' ( 'arolina, Zimmermann." Mesitius texanus, sj). nov. 9. Length 3.2""". Apterous; black, shining; head oblong, feebly sparsely punctate; thorax coriaceous; antenna*, UKiudibles, and legs brownish -yellow; metathorax with a single central longitudinal carina, and three or four very short raised lines on either side at base. Abdo- men ovate, as long as the thorax and much wider, polished black, the apical margin of the third and following segments narrowly testaceous. The pedicel and the first fiagellar joint are about equal, smaller than the following, the following joints being a little longer than thick. Habitat.— Texas. Type in Coll. Ashmead. Described from a single specimen, distingushed by the absence of wings. ANOXCrS Thonmon. Ofvers. af K. Vtt.— Akad., 1861, p. 452. (Typo A. loops ThoniH.) Head oblong; the ocelli 3, in a triangle on a slight prominence, in 9 subobsolete ; eyes in S oblong, in 9 more rounded, slightly hairy. Antenme 12 jointed, filiform, submoniliform in both sexes, in the $ l>il()se. Maxillary palpi short, 4-jointed; labial pal|)i 3-jointed. IVIandibles short, tridentate at apex, the outer tooth acute. Thorax smooth, without furrows, the i>rothecie8 have been discovered as follows; nS BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Anoxus Chitteudenii, sp. nov. (PL IV, Fig. 6,,?.) S . Length, 1.5""". Black, shiniug, impunctured, except the pleura and metathorax. The head is very slightly longer than wide, with a prominent clypeal carina. Mandibles short, black or i)iceous, the outer tooth conic acute. Eyes oval, slightly hairy, Antennje 12-jointed, piceous, extending beyond the base of the metathorax, sparsely covered with white hairs; the scape is about the length of the eye or twice as long as the pedicel ; the first flagellar joint is slightly smaller than the second; remaining joints very slightly larger, the last the longest, fusiform. Prothorax as long as the niesonotum and scutellum together, rounded before; niesonotum broader tlian long with a slight impressed scapular line near the teguLe; scutellum small, rounded posteriorly, with an impressed line at base; mesopleura with a small round fovea on the disk ; metathorax quadrate, truncate behind and a little con- tracted at sides towards the insertion of hind wings, the angles slightly rounded, the dorsum closely punctulate. Wings hyaline, fringed, the venation pale, the anal nervure in consequence almost obliterated. Legs piceous black, the tarsi white. Abdomen shorter than the thorax, depressed, black, smooth, and shining. Habitat. — Ithaca, New York. , Types in National Iluseum and Ooll. Ashmead. Described from 3 specimens, received from ]Mr. F. II. Chittcniceous; scape davate, about one third the length of the head, pedicel larger than the first flagellar joint; re- maining joints, except the last, submoniliform, the last twice as long- as the penultimati'. Prothorax long, narrowed in front, about four times as long as the niesonotum; scutellum with 2 obli«iue fovese at base; metathorax much longer than wide, with a median carina, towards the base minutely shagreeued. Wings hyaline, ciliated, the venation yellowish; the radial vein is very long, nearly one-half longer than the first basal cell. Legs picecuis black, the trochanters, a dot at base of tibiie and tarsi, rufous. Abdomen iiointed-ovate, highly pol- ishetl black, a little shorter than the thorax, the third segment the longest. " -r---- "Babitat. — Washington, D. C. ^ Type 5 in Coll. Ashmead. Described from a single specimen taken on a window pane. MONOGRAPH OF THE NORTH AMERICAN PRGCTOTRYPIDiE. 69 Anoxus musculuB Sny. Bethyhtx vihscuIhk Say, Host. Jour., i, 280; Lee. ]':, 18.^6. EphemiiK Thoms. Ofv., ISfil, p. 452 (Type 7'. triarcolatun Fiirst.) Head lare,e, oblong, much wider than the thorax; eyes prominent, smooth; ocelli small, but distinct. Anteuua3 12 jointed, subsetaceous, somewhat distant at base, sepa- rated by a frontal lamina. Maxillary palpi 0-jointed; labial palpi 4. jointed. Mandibles 4- or T) dentate. Thorax elongate, the prothorax rounded anteriorly; mesonotum short, smooth, without furrows; metathorax subquadrate, oblicpiely rounded oft" i)osteriorly. Front wings with a subqu.adrate stigma, a parastigma (rarely want- ing), an incomplete radial cell, and two basal cells, the first of which is longer than the seconnger than the head, honey yellow, taper- ing towards tips; the first fiagellar joint is about as long as tlie pedi eel, which is a little more than twice as long as thick; remaining joints to the last gradually subequal, the last longer than the penultimate. Wings hyaline, with a slight fuscous tinge at the middle, the veins brown; stigma small, quadrate, black; parastigma wanting; the sub- median cell is one third shorter than tlie median ; the basal vein broken by a stump of a vein beyond the middle; stigmal vein very long, ab- ruptly curved upwards at tip and almost forming a complete marginal cell. Abdomen ovate, not quite as long as tlie head an«l thorax to- gether, bhw'k and shining, the second, third, fourth, and fifth segments emarginate at the middle. Habitat.— Portland, Oregon. Described from a single specimen obtained from H. F. Wickham. This is the only .species known to m«; in this genus without a para- stigma, and this character, in connection with the single tibial spur on the middle legs, may be sufficient to found a new genus. Perisemus formicoides Prov. liethylus f Prov., Add. et Corr., p. 179; Cress. Syn. Hym., p. 247. 9. Length, 2.0 to 3""". Black, polished; h'gs and antennae honey- yellow, the latter brownish toward tips; the anterior and posterior MONOGRAPH OF TflE NORTH AMERICAN PROCTOTRYPID^. 7l femora bhukisli tow.ard base. Piotliorax very lonjf, fattened, nar- rowed before, shiiiiuf;, Avith a fine and somewhat dense jiunctnation; mesonotnm short; metathorax elonjy.ato, tlie sides polished, the disk punctured. Wiiifjs liyaline, the parastigma and stigma brown. Abdcmien elongate <»val, polished, black, the apex with si)arse hairs. Habitat. — Ottawa, Canjula. Type in Coll. Provancher. PerisemuB floridanus Aslini. (PI. IV, Fi- 7,9.) Ent. Am., in, p. 7<>. ^ 9 ; Oess. Syn. Ilym., p. 247. S 9. Length, 2.5 to 3""". Black, shining, finely, closely punctulate, the head with some scattered, thimble-like punctures. Head a little longer than wide, the frontal carina not extending behind the insertion of antennae. Mandibles and palpi honey-yellow. Antennte 12-jointed, Inmey-yellow, the two or three apical joints dusky; the scape is thick, less than thrice as long as thick: flagellar joints submoniliform, scarcely longer than thick, the last twice .as long as thick. Prothorax trapezoidal, longer than wide across the base; mesonotum about as long as the scutellum, the latter with a faint impressed line across the base; metathorax quadrate, smooth, with a faint trace of a median longitudinal carina. Wings hyaline, the costa, stigma, and parastigma dark broAvn, the other veins honey yellow; the backward-directe«l branch of the basal vein is not as long as the first branch of the basal. Legs, except coxa' and femora, honey-yellow. . Habitat. — Jacksonville, Fla. Types in Coll. Ashmead. Perisemus minimus, Hp. nov. 5 . Length, 1.8 to 2'"'". Bla<^k, shining; legs brown ; anterior tibije and all tarsi honey-yellow; mandibles black; antenuic honej'-yellow, the scape thick, 2i times as hmg as thick; i>edicel longer than the second flagellar joint, first flagellar joint minute; flagellar joints, after the second, not longer than thick; wings hyaline, the venatioji i)ale hyaline, the stigma and i>arastigma brown. Abdomen jiointed-ovate, not longer than the head and thorax together, polished black. Habitat. — Arlington, Ya. Type in Coll. Ashmead. The small size, shining surface, black mandibles, and color of the legs sufficiently distinguish the species. The head is more like that iu Epyris, being longer and more narrowed than is usual in this genus. -^ ; i — -^ _. i Perisemus mellipes Aslini. Ent. Am., Ill, p. 7fi, 9 ; ('ress. Syn. Ilym., p. 247. 9. Length, 3.2"'"'. Black; the head opaque, finely, densely punc- tulate; thorax smooth, shining, microscopically punctidate; legs eu- 72 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. tirely honey-yellow. The head is slijjhtly lou<^er tluiii wide and wilc-like punctures, ^randibles black. Palpi pale. Antennae 12-jointed, honey-yellow; the scape stout, more than thrice as long as thick; the flagellnm nuich thinner, tapering towards tip; pedicel as long as the .^rst flagellar Joint; the second and third a little stouter than the tirst and of an equal length; the following a Ijttle shorter, all longer than thick. Prothorax subquadrate; mesonotum very short; scutellum witli a short, taint tran.sverse line at base; meta- thorax longer, obliquely rounded off" posteriorly, shining, at base finely rugose. Wings aborted, not extending to tip of the metjithorax. Legs black, trochanters, tibia', and tarsi honey-yeHow. Abdomen pointed ovate, much wider than the thorax, highly polished, black, segments 2, 3, and 4 emargiuate at apex. Habitat. — Ottawa, Canada, and Lafayette, Indiana. Type 2 in Coll. Ashmead. Described from the type specimen, kindly given me by Mr. Harring- ton. In the National Museum is a specimen, retired August 2.S, 1S88, by Mr. F. M. Webster, from Crambtis caliginosellKs. GONIOZUS Forster. Hym. Stud., ii, p. 96 (18r>6) ; I'arasieiola Cam., Trans. Ent. Soo. Lond., 1883, p. 197. (Type G.clariperiniHV'nTBt.) Head much as in rerisemns; in S much broader than the thorax, with a prominent clypeal carina; in 5 longer and less broad. Antennai l.'i jointed, subsetaceous, not inserted so far ai)art as in Perisemusy the scape swollen, twice as long as thick, the first flagellar joint minute, smaller than the pedicel, the following joints moniliform, except in the males, rarely much l<»ngcr than thick. Maxillary palpi G-jointed; labial palpi 4-jointed. MONOGRAPH OF THE NORTH AMERICAN PROCTOTROPID^. 73 Mandibles oblouj;, truncati' at tips, with 4 to a miuute t«etb. Ihorax as in Pcriscmus. Front wings as in Perisemus, except tbat sometimes the backward- directed branch of the basal nervnre is often bent backwards and joins the basal iiervure near its origin, forming a small triangular closed discoidal cell (= FaroHicrola Cameron). Abd(mien in 9 pointed ovate or long conical, in $ ojdong-oval and more depressed. Legs stout, the femora very nuich swollen. Distinguished from Periscmns by having 13, not 12 jointed antenufe. Parasierola Cameron is apparently only a section of this genus, having the backward directed branch of the basal norvure a little more elongated and forming a distinct cellule; otherwise it is identical, and is here conjoined to Goniozus. TABLE OF SPECIES. FEMALKS. Species with aBiiiall triangular rtiacoidal cell. Coxa^ and femora black; anterior tibia' and all tarsi yellow... G.cellularis Say. Species without a closed discoidal cell. Head unusually large 2 Head normal. Backward-directed branch of the basal ner^1lre as long as the first branch of the basal nervnre; legs black. Anterior tiltiie and all tarsi yellowish. Wings Rul)hyaline G. foveolatcs Ashm. All tibia' and tarsi yellowisli ; 9 with middle and hind tibia' dusky. Wings clear hyaline G. platvnot.k, sp. nov. Backward-directed branch of the basal nervnre only one-third the length of the first branch of the basal nervnre. Abdomen very long and cylindrical, pointed at tip, much longer than the head and thorax united. Wintrs subfiiscous G. politcs, sp. nov. Abdomen very little longer than the thora--:, ovate. Legs Itrown, the tarsi jiale G. COLrMBiANCs, sp. nov. Abdomen not longer than the head and thorax united. All legs, including coxa-, yellow G. Hiuhakdii How. 2. Legs piceous. tips of tibi;e and tarsi pale. Wings hyaline G. megacephalus, sp. nov. MALES. * Wings without a discoidal cellule. F^egs honey-yellow; wings hyaline G. Hubbardii How. Legs brownish or piceous, the coxse black. Wings fuscous or subfuscous. Anterior tibiae, trochanters and all tarsi brownish-yellow. G. FOVEOLATiTg Ashm. All tibiip and tarsi honey-yellow G. columbiancs Wings hyaline. All tibiiP and tarsi brownish-yellow G. platynot.k Wings with .a tliscoidal cellule. Legs piceous, the tibia .and tarsi pale G. ceixularis Say. 74 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. GoniozuB cellulariB Say. Bt'thyliis cellularis Say, Lcc. Ed. Say, ii, p. 276; Ashm. Ent. Am., iii, p. 97; Cress. Syii. Hym., p. 247. S 9 . Length, 2.2 to 3'""'. Black, shining, the head with some fine, scattered punctures. Antenna' varying ft v.m a lioney-yellow to fuscous. Legs piceous, tlie tibia; and tarsi often honey- yellow, especially the an terior pair; feftiora often black. In the male the wings are clear hya- line, in the female fuscohyaline; the parastigma h row nor black; the branch from the basal nervure curves backwa'ds and Joins the median nervure near the tip, forming a complete cell which readily distin- guishes the species. Habitat. — United States. Specimens in National Museum and Coll. Ashmead. Found in various parts of the United States. A single specimen is in the National Museum reared by Prof. F. M. Webster, September 17, 1884, from a geometrid larva in wheat stubble; while my collection contains a specimen, reared June 5, 1885, from wheat stalks infested with Isoftoma tritici. The species is, without doubt, parasitic on various microlepidoptera. Groniozus megacephalus, sp. iiov. $ . Length, 2.8'"'". Black, shining, with a line, microscopic punc- tuation and a few larger punctures scattered over the surface. The head is large and long, a little more than one and a half times as long as wide. Mandibles large, black. Antenuji; 13-Jointed, inserted wide apart, and not nmch longer than the head, moniliform, yellow; the scapo" swollen, twice as long as wide. Metathorax smooth without cfiriiKne. Wings hyaline, the parastigma and stigma piceous. The other veins yellowish; the branch of the basal vein is reduced to a nu're stump. Legs brownish piceous, the tips of tibia; and the tarsi yellow. Habitat. — Key West, Fla. Types in National Museum. Described from a single 9 taken by E. A. Schwarz. Goniozus foveolatus Ashm. Ent. Am., iii, p. 76, 9 ; Cress. Syn. Hym., p. 247. 9 . Length, 2.5 to 3""". Black, shining, but finely, delicately i)unc- tate, the head with a few coarse, scattered punctures; transverse furrow at base of scutellum terminates in small, oblique fovese. Antenna' 13-joiuted, honey-yellow, the scape short, thick, the follow- ing joints all small, moniliform. Legs black or piceous ; anterior tibisB and tarsi and the middle and posterior tarsi, honey-yellow. Wings subhyaline; stigma and parastigma black, the other nervures lioney- yellow ; the basiU nervure is broken by a stump of a vein which is less MONOGHAPH OF THE NOKTH AMERICAN PROCTOTRYPID^. 75 tliau half the length of the first branch of the basal nervure. Abdo- men cyliudrui-ovate, a little lonf-er than the head and thorax nnited. In the S the middle and posterior tibiie are pale brown, the abdo- men being shorter than the head and thorax united. Habitat. — Florida and District of Colund)ia. Types in National Museum and Coll. Ashmead. The species is closely allied to (r. platyiioUv, but its slightly smaller and more slender form, the subhyaline wings, au«l the black stigma an«l parastigma, readily distinguish it. The National Museum contains a specimen, reared April 14, 1882, at Georgiaua, Fla., from a tineid larva in dry fungus. Ooniozus platynotae, sp. nov. (PI. IV, Fig. 8, 9.) i 9 . Length, 3""". Black, shining, very sparsely pilose; head with a prominent keel between the antennse, microscc^pically closely punctu- late, with a few larger punctures scattered irregularly over tlie surface, subopaque. MaTulibles, antenna', and legs pale honey-yellow ; the ante- rior femora vary from a dark brown to black, the middle and posterior femora in $ brownish only in the middle; in the female the mandibles are black, and all the femora are black or brownish-piceous, their tibite brownish. Antennae 13 Jointed, extending to the teguLe (in 9 a little shorter), moniliform; pedicel small, rounded, much smaller than the first flagel- hir j«)int; all the flagellar joints but the last moniliform, the last oval. Metathorax smooth, with a delicate niediau carina, and carinated along the lateral margins. Wings hyaline, the parastigma and stigma large, brown, the latter twice as long as wide, rest of the nervures pale yellow; the first basal cell is longer than the second, the basal vein broken by a backward directs branch. Abdomen as long as the head and thorax united, ])oli8hed black, the sutures i)iceous. Habitat. — Virginia, Maryland, District of Columbia, and Florida. Types in National Museum and Coll. Ashmead. The species is not rare. Dr. Kiley reared a single male July 30, 188(5, from Platynota sentana. Groniozus politus, sp. nov. 9 . Length, 2.4"'"'. Black, highly polished, impunctured. Head not wider than the thorax, nearly twice as long as wide, smooth, im- punctured. .-^~^:.-.,^::..^:.^^.-J..-:-— :^::.^ --,-'.:-, .^^^:^... Antennje 13-jointed, short, scarcely longer than the head, moniliform, brownish-yellow, unctate, in 9 1| times as long as wide, in into(l, the };enus evidently beh)nurs 1, 0, 2, tarsi 5 jointed, claws simple. The shape of the head, the difference in the numbers of joints in the antennae, and non-chelate anterior tarsi in the females, sufficiently dif- 78 IMTF.LKTIN 45, UNITED STATES NATIONAL MUSEUM. ferentijit«' this j,aonp fnmi the licthyliiui; hihI thi' Dryiiiiiia', to wliirli it is iin>st clost'ly jilli«'(l. Tlu! ji;n)Ui> is rare Jiiul only a few species in it arc known, (In'ir habits still H'niainiii}; unknown. From their close strnetural atllnity with the l)ryinin;e it is not unlikely they have siniilai- haltits. The renera may be (listin}j;uished by tlu^ aid of the following,' table: TABLE OF (iENERA. KKMAI.KS. AuttMiiia- 13-joiiit<'(l. W'iugs rmliiiieiitary; vyvm flat; ocoUi very Hiiiall; scain) iiiiich louyer than the lirst funit'lar Joint I'KIUNOM.M^ iMirst. Whiffs fully (U'vj'loptd. Eyes arclieil; owlli larj^r; scaiic sliort«;r than the first fiiiiiclar joint. Emih>ij:mi s Wcstw. MAI.KS. AnttMiuii- lO-jointtHl. I'rothoraxas lon;(iiH tlu) nu'sonotinn, with a ilecp median huIcuh; scaponmch loMfj;t'r tli.'in the lirst flagellar Joint A.mi'ui.ii'omoki'Ma Ashni., ^rn. nov. I'rothorax isliortttr than the uiesouutnni, witlioiit 'a median sulcus; 8('a]te much shorter than the lirst flagellar joint Emuolkmcs Wcstw. PEDINOMMA liirstcr. Hym. Stud., ii, ]». Dl (IKWJ). MyrmecomorphHn Westw., I^oud. Mag., IKVA, j). 4{)ri. (Type if. nifcuviiiH Westw.) Head rounded, a little oblong, with ;> frontal tubercle; eyes rounalpi 3 Jointed; labial palpi 2-Jointed. Wings iu 9 rudimentary or wanting, the S unknown but probably winged. Abdomen ovate, much longer that the thorax. Legs thick, tluj jwsterior pair long. A very rare genus, so far only known from I'^uiope, an/,yp/((HH« N4H-H, Moll., II, p. :U!). 9- ( Tyjn^ A', liiuldii Wi'Htw.) (IM.v, FiK.-'. ^.) Ih'iMi small, siibgiobost',, pulx'sceiit; eyes .small, roiimlcd; ocelli 3, distinct. Anteniue in eeimen. Since the above was written I have seen another specimen in tbe collection of tln^ American Ent*>mo- logical Society, taken in Nevada. It ditters in being slightly smaller and with paler colored wings. Subfamily IIL—DKYININ^E. Head trans v^erse or sub(iuadrate; when viewed from in front often triangular. Ocelli 3, in a triangle. Mandibles stout, 3- or 4 dentate. Antennae porrect, tiliform or subclavate, pubescent or pilose, lO-jointed in both sexes, inserted just above the clypeus. Maxillary palpi 3- to 5-joiuted; labial i)alpi l! to 4-jointed. Pronotum variable, very short, MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPIDiE. 81 scarcely visible fi^oiu above, or very loug, and separated from the me- sonotuni by a strong constriction; mesonotnm not longer than wide, with or withont distinct parapsides; sc^telluni generally large, rounded or truncate posteriinily, entirely wanting only in Gonatopus; metatho- rax quadrate or subquadrate, truncate or rounded off behind. Front wings with a lanceolate or ovate stigma, a closed costal cell, two basal cells, and an open radial cell; rarely with a distinct discoidal cell; hind wings distinctly lobed, veinless except along the costa to two- thirds its length, the tip of this vein being furnished with booklets. Abdomen subpetiolate or petiolate, ovate or oblong-oval, depressed, or occasionally compressed, composed of 8 segments, the ovipositor not exserted. Legs long, the anterior femora much swollen, the miildle and posterior pairs obclavate, the tibiae subdavate, their spurs 1, 1, i^ ^arsi 5 Jointed; the anterior tarsi in the females in all the genera, exc( ^^ AphelopKs and Mystrophorus, are chelate. A very interesting group, and evidently an ancient phylogenetic type of the order, the chelate anterior tarsi in the females being found in no other group among the Hymenoptera. The l)r//j/«/wa' confine their attacks to homopterous insects belong- ing principally to the families Fulgorida', Membracid.e and Jassidje, living in felt like sacks protruding from the abdominal spiracles. Prof. Joseph Mik has given a most interesting account of the biology of Gonotopus pilosus Tlioms., living on Beltoeephahis xanthoneurus, while G. pcdestris Dalm. has been reared from Athysanufi mnritimioi and Thamnotetttx' sulphurella. ApJielopus melaleurus Dalm. has been discovered by Giard, in France, to prey upon Typhlovyba hippocastani and T. dnuglasi. The genus Laheo Haliday, known only in the male sex, bears a superficial resemblance to Aphclopus and has similar habits, my Lalteo typlilocyb(V having been reared by Dr. Riley from a Typhlo- cyha living on tlu^ sycamore. I believe this genus will yet i)rove to be the opposite sex of Gonntopns. The following table will be foautuui ; fourth joint <»f anterior tarsi much louj^er than the third, the lirst joint not, or scarcely, longer than the three following united; maxillary palpi 5-jointed. ClIKLOUYNUS Hal. Prothorax much shorter than the mesonotum; fourth joint of anterior tarsi scarcely longer than the third, the iirst not, or scarcely, longer than the three following unite»l; maxillary palj . 4-jointed. Antkon J urine. 4. Prothorax much 'onger than the mesonotum, the latter without a trace of a fur- row ; head large, broad M ysti{< H'IIORUS Forster. Prothorax above not or only slightly A'isible ; mesonotum stnnigly developed, with furrows Aphelox'US Dalm. MALKS. 1. Sfcigma oval or ovate 2 Stigma lanceolate. Occiput deeply concave; vertex and neck separated by a sharp angle; nu;sono- tum with distinct furrows; a discoidal cell; maxillary palpi 4- j(»inted Laheo Hal. Occiput not concave, straight aiul broad; mesouotum without furrows; no dis- eoidal cell; maxillary palpi 5-jointed Piiokijas Ashm. gen. nov. 2. Prothorax mu<'h longer than the mesonotum. Mesonotum with furrows; maxillary palpi 5-joiiited Ciielogynis Hal. Mesonotum without furrows; maxillary pali)i 4-joiuted..MYSTKOiMioiJi;s Forst. Prothorax much shorter than the nu'sonotum. Mesouotum with or without traces of furrows; maxillary palpi 4-joiuted. Anteon J urine. Prothorax not, or scarcely, visible from above. Mesonotum strongly developed, with furrows; maxillary palpi 5-jointed. Aphelopiis 1 )alm. GONATOPUS Ljiiiigh. Web. und Mohr. Beitr., 1810, p. 161; Dicoudylus Hal., Ent. Mag., iv, p. 410 (1837). (Type (/. pedeHtr'iH Dalm.) Head large, transverse; when viewed from in front very short, trian- gular, the vertex deeply impressed and sloping oft" towards the neek; the occiput convex, not margined; eyes very large, prominent, occupy- ing the whole side of the head; ocelli small. AntenniX? 10 jointed, liliform or sidxlavate; scaj)e alxmt one-third the length of the head, thicker hut not much longer than the second. Maxillary palpi 5-jointed. Mandihles Sdentate, the outer tooth long and acute. Thorax greatly eh>ngated and of a peculiar shape; the prothorax much wider than the mcsothorax, the latter elongate and humped at the middle, and separated from the metathorax by a strong constric- tion; the metati'orax clavate. Wings always absent. Abdomen oblong ovate, subpetiolate, the second segment the longest. Legs very long, the posterior pair greatly lengthened ; coxie large, MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID.E. 83 the anterior pair greatly lengthened ; femora obelavate, the front i)air the stoutest; tibiie very long and slender, very little thicker at tips than at the base; anterior tarsi (;helate, middle and posterior tarsi, 5-jointed, shorter than their tibiae, the claws and pulvilli small. This genus is readily distinguished from all the other genera in the group by its peculiar shape, the strong constriction between the meso- and meta- thorax, the absence of wings and scutellum, and the nuich longer and more slender tibije. In its cephalic and antennal charac- tiirs it api»roaches nearest to DryluKs, but otherwise it is (piite differ- ent, that genus having wings, a distinct large scutellum, and is without the strong constriction between the meso- and nu'ta- thorax. The male is unknown, but I have reasons for believing that the genus Labi'o Ilaliday, known only in the male sex, will yet prove to be the opposite sex of this peculiar genus. Mr. Canteron, in IJiologia Centrali Amer'^ana, has described two or three species that he sui)posed were wiuj .s males, but as these so- called males have chelate claws, I suspect ne has mistaken females for males, as all the males in this group known to mo have simple, not chelate daws, the chelate dawsbeing a character peculiar to the females. Our species may be tabulated as follows: TABLE OF SPECIES. KEMALKS. Species more or less brown or jtale lirownisli-yellow 2 Species, excepting a portion of the Iie.id, black. Thorax punctnlatc. Head not twice as broail as Imij;; nictatborax, anteriorly antl posteriorly, transversely striate'!. Occiput, face, and two basal joints of autennic, yellow, rest of antenna^ fuscous (i. coNTOKTiLis, Patton. Head twice as broad as lonjf ; metatborax, anteriorly and posteriorly, trans- versely striated. Occiput, face, and antenna', excei)t tbe tbret* terminal joints, yellow. G. Fi,AViKi:(>NS, sji. nov Thorax i>olisln'd, shining. Head entirely black (;. dkciimkns, I'rov. 2. Abdomen iilack ; head and tliorax dark reddish-brown. Metatborav coarsely transversely striated; autenua' yellow; loj;s piceous or brown, the coxa- and tarsi ycdlow (>. iAi,ii'<»itxiiceons; head, tliorax, and Icjis jiale or yellowish. Metatborax smooth, i)olished, with only a few faint, transverse striae (i. iiicoLOK, sp. nov. Oonatopus contortulus Patton. Can. Knt. xi, p. m (1879), 9 ; Asbni. Ent. Am. iii, p. 74- Cress. Syn. Hym., p. 246. " 5 . Length .3.5'""'. Head testaceous, maiuiibles and scape of an- tenna' white; the teeth of the mandibles, second joint of the anteiune, and a line on the scap«' posteriorly, pale testaceous, remainder ol' an- teuua) fuscous. A large fuscous spot on the uuder side of head, aud 84 BULLETIN 4.-), UNITED STATES NATIONAL MUSEUM. jiuother ubovc ill front of and iiidudiiij;' the ocelli; «i ra,ise* \o\\g as the first, tlie third very slender and eciual in length to the first and second together, the fourth and following Joints slender but gradually becoming thicker, the tburth one-half as long as the third, the fifth a little shorter than the fourtli and a little longer than each of the following joints. Thorax and abdomen i)iceous black. The thorax slender, binodose. The trochanters formcil of only one Joint. Anterior coxai long and robust, i)ale testaceous with a darker stripe above; anterior trochanters whitish, more slender, clavate ; femora large, obdavate, dark testiu'eous, paler at tip ; ribiic as long as the femora and, together with the first tarsal Joint, pale testaceous ; termi- nal joint of the tarsi and the chehe whitish. The chehc at rest extend- ing back to the tip of the first joint of the tarsus, the outer claw pointed and slightly curved at the extremity, the inner claw more robust, cilia- ted internally and with a wrench-shaped curve at tlu^ extremity ; pul- villus tipped with fuscous. The other legs slender, the coxa' and the base of femora dilated, testace<»us, the coxa', base of femora, tibia; above and daw joint of tarsi, darker. Abdomen ovate, i>ointed at tip and Avith a short pcitiole." {l*atton.) II AiJiTAT. — Waterbnry, Conn. Type in Coll. American Entom.)logical Society, at Pliiladelphia. The type is in jjoor condition and I have copied JMr. Patton's de- scription. It was captured at Waterbnry, Conn., on herbage a few inches abov<^ the ground, August 18, 1879. Gouatopus flavifrons, Hjt. iiov. (PI. V, Fi-. 4,9.) 9 . Length, 4.4""". Black, shining, with a fine shagreened punctua- tion. Occiput, fiu-e, mandibles, except teeth, palpi, antenna', except the three tenninal Joints, which are fuscous, and legs, yellow; the long large anterior coxa' have two black spots beneath; the greatly sw<>llen anterior fenutra above are almost entirely black, while their tibiic ha\e a black streak above ; the middle and posterior coxa' and femora basally are also more or less black above. The anterior or constrii;ted part of the metathorax and its posterior face are transversely striated. The abdomen, except blotches at the sides of the first segment, the apical edge of the third and fourth segments, esj>ecially laterally, and the terminal segment, which are rufous, is highly ])olished, black. Habitat. — Albany, N. Y. Tyi>e 5 in Coll. Ashmead. Described from a single si)ecimen received from Mr. W. H. Harring- ton, who informs me that it was ca])tured by Mr. Van Duz<.'e at the above place. .. MONOGRAPH OF THE NORTPI AMERICAN PROCTOTRYPID.E. 85 The 8i)ecies coiues nearest to (f. c(nitortuhis Partoii; but it is laij^er, the head l)roader, and it (litters also in cohnational detail. Gonatopus decipiens Pro v. Add. <'t. Corr., \k 17it, 9 ; Ashin. Kiit. Aiti., iii, j). 71; Cn^ss. Syii. Hyiii., p. 246. V . Length, 2.4""". Blaek, with the antenna' and legs, in part, testa- ceous. Head large, tlat, very finely puuetured, with a large ocellus on the vertex. Antenna' inserted near the mouth, 10-Jointed, the first the longest and thickest, the foUowing elongated, slender, the terminal joints dusky. Thorax polished, shining, narrow, elongated with respect to the constricted part of the scutellum. Abdomen subsessile, oval. Ani*^ ior femora strongly swollen, black, their tibite testaceous, their tarsi brownish, with the claws long, in the form of pincers; the four posterior femora with their tibia' black, their tarsi testaceous. Habitat. — Cap Rtmge, Cana'"'. Head, thorax aniccous l»Iack. Maiulibles 4-dentate. Eyes l)rown. Metathorax smooth, i>olished, the posterior face feebly transversely aciculated. Antenna' snbdavate, brown, the 4 or 5 ])asal joints yellow, the tirst flagellar Joint about twice as long as the second. Habitat. — Selma, Ala. Tyix' 9 in National Museum. Desm'ibed from a single specimen collected by Mr. NV. H. I'atton. DRYINUS Latreill.-. IliKt. Nat., xni, p. 228(180.t); Foist. Ilyiii. Stud., ii. ]>. <»0. CIkIoIIuUhm Keinh., Berl. Kut. Zeits, lXti3, p. 4(W. (Typo I). formicariuK Latr. ) Head transverse, the vertex impressed, wlu'u viewed from in front triangular; eyes large, i)rominent; o<;elli ;i in a triangle. 86 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Anti'iniii' lO-joiiited, filiform <»r sliated; the prothorax very long, separated from the mesothorax by a strong constricth)n, above convex, anteriorly rounded; mesothorax broader than long, shorter than theprotliorax, and usually without parapsidal furrows; the scutellum distinct; metathorax sub- (piadrate, more or less rounded olf i)osteriorly, rugose. Front wings with a large stigma, two basal cells and an incomplete marginal cell. Abdomen oblong oval or oblong ovate, petiolate, tlie second and third segments the largest, of which the sj'cond is the longer. Legs long, the femora obclavate, the tibiie long, slender, the anterior tarsi chelate; in i anterior tarsi l<»ng, simple. Only three species in this genus arc known in our fauna, which may be recognized by the aid of the following table: TAHLE OF SPECIES. FEMALKS. Not, entirely hrownish-yellow 2 Ell tin' ly brownish-yellow. Winjis with two fii.seons bands I ». bikasci ATI's, Say. WinjfH fuHeiius, with a lar);<' roniMled hyaline spot IxMieath th»( Hti^^nia. D. ALATIS, ("r. 2. Abtlonieu shiniuf? ]>laek. Winj^s hyaline with two fiiscons bantls I>. amkuicaxis Ashni. D. bifasciatUB Say. Lcc, Ed. Say's Works, i, p. .S84, 9 i Ashni. Ent. Am., iii,i>. 71 ; Cresa. Syn. Hyni.,p. 24?s with two fnscons bands, th<>. a))ical one broader. Length rather more than one-lifth <»fan ineh. (>V<(i/.) Unknown to nic. Dryinus alatus Cr. Gonatopus f alnliis Cr., Trans. Am. Ent. Soe., n , \t. 19,3, 9 • Dryinus alntiiit Pat- ton, Can. Ent., xi, p. 05; Ashni. Ent. Am., p. 246; Cress. Syu. Hym., jt. 246. 9 . Length S.TS""". Pale femiginons, head shining, much broader tliau thorax, transversely compressed; front tlat; eyes large, prominent, ovate; clypeus transverse, subcon\ex, bitubereulate at tips; mandibles and scape beneith whitish ; antt^nna; slender, as long as head and thorax, 10-joiuted, iirst joint short anle, not chelate. LABEO Haliday. Ent. Mag., i, p. 273 (ISIW). (Type L. cxciHus Westw.) Head transverse, the vertex broad, subconvex, the occiput deeply concave; eyes large, oval, jn'ominent, but much smaller than in either (ionutopvs or Dryhius, and occupying only the anterior half of the sides; the cheeks oblique; ocelli 3, small, triangularly arranged; a delicate keel extends forward from the fnmt ocellus. AntenniT^ 10-jointed, filiform, inserted just above the clypeus, slightly thickened towards the tips; scape thickened, a little curved, about twice as long as the pedicel, or a little shorter, or as h)ng as the first flagellar joint. 88 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Maxillary i>ali)i rather lonj;, 4-Jointod; labial i)ali>i v«^ry slunt, 2- jointt'd. IVIaiidibles truncate at tii)s and .'{dentate, thti outer two iMuiical, ecjual; the inner smaller, blunt. Thorax snbovate; prothorax narrowed before «and impressed at sides, seanely as lon<; as the mesonotnni, the anterior margin ridjied; meso- notuni broadjT than lonj?, with 2 distinct furrows eonverj^inj; pos- teriorly; meta thorax short, rounded behind, scarcely sculptured or indistinctly areolated. Front wiufjs with a moderate sized lanc^eolate stijiina, two basal cells, and an angnlated stignial vein; sometimes one or two discoidal cells are more or less visible, but usually they are wanting or subob- solete. Abdomen subovate or oblong oval, petiolate, the second and third segments nearly equal. Legs moderate; the hind pair the longest, femora obclavate, the tibiae subclavate, tlu^ tarsi usually long and slender. I am strongly of the oi)inion that this genus, known only in the male sex, will yet prove to be the opposite sex of Gonatopns. It is reared from TifphJoci/h(V and other jassids. The four species in our fauna may be distinguished by the aid of the following table: TABLE OF SPECIES. Hind logs very long, the tibiiu very long. Hind tiiisi longer than tlioir tibia". Antenna- very long, tlio llagolliir joints nearly .'') times as long as thick. Marginal eell open at tip L. i.oNtuTAKsis, s\t. nov. Marginal cell completely ciosed L. tkxancs, sp. nov. Hind Icigg not especially long, the tiliia^ not long. Antenna' not longer than the thorax, the ilagellar Joints ueAcr more than 3 times as long as thick. Pedicel and scape eqnal in length L. NASi'Trs Ashni. Pedicel twice a.s long as th(! scape L. tvi'Hlocvb.e, sj). nov. Labeo longitarsis sp. nov. 3 . Length 2.G""". Black, shiniig; head finely closely punctate, the occiput deeply emargin ate; eyes large, rounded, pubescent. Man- dildes and i)alpi rufous. Antenna* lO-jointed, long, setaceous, pubes- cent; first and last tlagellar joints about of an equal length, longer than the scape, the remaining slightly shorter, four times as long as thick. Prothorax scarcely visible from above; mesonotum with two distinct furrows, converging posteriorly; scutellum with a transverse impressed line at base; jnetathorax longer than high, roundedly trun- cate behind, finely closely punctate, and with a median carina. Wings hyaline, pubescent, the venation distinct, brown; the stigma long MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID.E. 89 l;ui(«M>latt', tlie stifiinal voiii very loiij;, I'orniing nearly a closed mar- jfiiial cell. Legs fiiseons, the iK)steii(>r pair unusually long. 1 1 ABIT AT, — Jacksonville, Kla. Type (J in Coll. Asliniead. Labeo texanus sp. nov. i. Length 2.5""". Allied to L. loiif/itarsis, hut ditlers as follows: The head is nioi'c finely jmnctate; mandibles black or piceons; niargi- nal cell in anterior wing completely closed; legs black, tlu^ anterior knees, tibia', aiul tarsi i)ale brownish; the middle ami hind knees brownish; tibia' and tarsi fnscous. The metathorax is more rugosely l)unctate. Habitat. — Texas. Tyi>e in ('oil. Ashmead. Described from a single si)ecimen. Labeo nasutus Ashin. EmboleiniiH nasiitiiH Asbm., Eiit. Am., ill, p. 75 ^ . S. Length L*"'"'. Black, suboi)aque. Head vertically short, the frons i)unctate; ocelli prominent; eyes large, convex, hairy; niandi- i)les rufous; 3-dentate, the outer tooth a little the longest. Antennte 10-jointed, brown black, densely inibescent; the scape and the pedicel very short, together scarcely h»nger than tlu; tirst flagellar joint; tirst flagellar joint the hmgest, about thrice as long as thick, the following nearly etpnd, about twice as long as thick. Prothorax scarcely visible from above, narrowed into a little neck anteriorly; mesonotum without distinct fiinows, smooth ; njetathorax short, smooth, witha slightcarina. Abdomen subsessile, small, black, compressed along the venter. Legs brown-black, the kuees, tips of tibialpi yellowish. Antenna^ and legs brown, except the anterior tibiie and all the tarsi, which are yellowish. Antennae 10-jointed, extending to the middle of the metathorax, very pubescent; the pedicel is more than twice as long .as the scape; the first flagellar joint two-thirds the length of the i)edicel; the fourth and fifth equal and a little longer than the first; remaining joints, except the last, sube(pial, the last a 90 IHTLLETIN 45, UNITKI) STATK8 NATIONAL MlSKl'M. littlr loii};**!'. i)oiiiti*d. Mcsoiiutimi with - furrows, ('(niver};iiij> ami al- most iiu'ctinj; at tiio base of the st'iitelhiin. Wings hyaline, tlu' eosta and stigma brown, the other veins pale. Haiutat. — Washington, 1). C. Type S in National Museum. K«'areil by Dr. C. V. Kiley, at Washington, D. C, July L'.'i, 1S8;{, from Tifphlocyba sp. occurring on Celtis aiul ehn. PHORBAS Asliin., f^cn. lutv. (Type /'. hilicc]»i Aslnii., ^ .) Head broadly transverse, wider than the thorax, but not especially thick through antero-posteriorly, and when viewed from in front rounded; eyes oblong oval, pubescent; o(«'lli .'?, triangularly arrange«l, neither esi)eeially small nor very close together. Antennae l(>-jt)inted, thick, filiform, not longer than the thorax, pu- bescent, the scape cmly a little longer than the lirst tlageUar joint. Maxillary i)alpi o-joiuted. Mandibles 3 dentate. Thorax as in AphclopuH, but witlumt distinct ])arapsidal furrows, tlu^ ])rothorax only slightly visible lr(un above. Front wings with a lanceolate stigma, two l)asal cells, and an open marginal cell. Abdomen subpetiolate, oval. Legs as in Aphelopux. A genus describt'd from a single male s]>ecimen, but the lanceolate stigma and 5 jointed maxillary i)alpi will, liowever, distinguish it from all other males, in the genera in whicli the males are known. There is a p<>ssibility that it maybe the opposite sex of my genus Bocvhus, as it agrees with it in maxillary, mandibular, and wing characters, but other- wise, in the shape of the head, thoracic, and abdominal characters, it is quite distinct. Of the otlur genera, it comes nearest to Aphehtpiis, but the widely transverse head, absence of ]iarapsidal furrows, and the lanceolate stigma, sufficiently separate the two. The single specimen, described below, was captured in Florida by sweeping. Phorbas laticeps, sp. iiov. (PI. V, FiR. 7,^.) Ur;/inii>i, l»ut the vertex not impressed, the oceii»ut very slightly concave; eyes larjic oval, promi- nent; ocelli small, close toj;ether in a triangle. Antenna' 10-Jointed, Rubtilitbrm, very slightly thickened toward tips, inserted Just above the clypeus, the acapii h)nger than the tirst tlagellar joint. Maxillary palpi 4 Jointed. Mandibles .{-dentate, nearly equal, the inner tooth a little the smallest. Tlunax not much lengthened, much narrowed anteriorly and trun cate posteriorly, the angles of the truncature rounded; the ])ronotum is almost as h)ng as the mesonotum but much narrower, a little wider anteriorly than at base, only about half the width of the very broad head; mesonotum wider than long, with furrows; scutellum semicircu- lar with a transverse furrow all across the- base; metathorax much shorter than high, abruptly truncate. Front wings with a lanceolate stigma, two basal cells, and an open marginal cell, the radius being long and »'urved. Abdomen globose, distinctly i>etiolate, the ])etiole slender, (tylin drical, as hmg as the hind coxa*. Legs as in J)ryinu)i, the anterior tarsi chelate, tin' fourth Joint not much larger than the third. This genus comes nearest to Dri/inut, hnt is at once separated by the 4-jointed maxillary palpi, the dilference in the shape of the prothorax, the globose abdomen, the relative length of the anterior tarsal joints, and by the vertex of the head not being impressed. Only a single species is known, as follows: Bocchus flavicoUis, sp. nov. (PI. V. Fig. 0,9-) 9 . Length 3'""'. Black, closely, finely pnnctnlate, the head and mesonotum tinged with brown. Head large, broad, sub(iuadrate, not impressed on the vertex, a little narrowed behind the eyes; eyes large. Prothorax strongly contracted, yellow; two basal joints of antennje, the legs and petiole pale rufous; flagellum subclavate, brown blaek. AntenniB 10-jointed, the pedicel ab(mt half the length of the first Hagel- lar joint, the first being about as long as the scape, the remaining joints 92 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. shorter but thicker. The prouotum is much narrower than the meso- notum, although about as long; niesonotum with two furrows; scutel- luiu bifoveated, the fovese widely separated but connected by a trans- verse line; inetathorax short, coarsely rugose, with some dorsal raised lines. Wings hyaline, with a fuscous band across the marginal cell two-thirds the width of wing, ahjost devoid of pubescence; stigma lanceolate; stignuil vein long curved; abdomen globose, black, petio- lated, the petiole slender, rufous, as long as the hind cox.-e, the second and third segments very large, equal, occupying nearly the whole sur- face, the following segments retracted. Habitat. — Marali)i white. Antenna' 10 jointed, brown, the first flagellar joint about half the length of the scape, the remaining 94 BULLETIN 4r>, UNITED STATES NATIONAL MUSEUM. joints very little longer than thick. Wings clear hyaline, stigma brown, veins pale or hyaline. Legs pale rufous, the posterior coxui blackish basally ; tlie piiK'hers of the anterior feet very small. Habitat. — Ottawa, Canada. Type in Coll. Ashnu'ad. This species is described from a single specimen received from W. H.Harrington, and comes nearest to the European Cfuscimrnis Dalm. ANTEON J urine. Hymu., p. 302 (1807) ; Forst., Hymn. Stud., ii, p. 93. Jleterolepis Nees, Mon., ii, p. 271. (Type J. Ji(rhieanu8 Latr.) Head transverse, the vertex wide, convex or subconvex, the occiput slightly concave, margined; ocelli in a triangle; eyes ovate. Antennte inserted just above the clypeus, lO-jointed; in the 9 sub- clavate, the first flagellar Joint hardly one-third the length of the scape, the following joints short, the terminal joints thickened gradually; in S filiform, pilose, rijinus, but quite distinct. It has not a particle of resemblance to Dryinus, except in the anterior tarsi being chelate. The shape of the head, the short collar, and ovate stigma in front wing, readily separate it from that genus. With Chclofjynus, however, there is a closer reseujblance, but the prono- tum is always nnicu shorter, often only visible from above as a slight collar, while the maxillary i)alpiare 4-jointed. In Cheloijynus the pro- uotnm is always as long, or nearly as long, as the mesonotum, while the maxillary ])alpi are 5-jointed. The species are numerous, although nothing i>ositively is known of their habits. The following table will afford assistance iu distinguishing our species: - ' ' ' " - MONOGRAPH OF THE NORTH AMERICAN PROCTOTKYPID.E. 95 TAHLE OF SPECJIES. FEMALES. Wingn hyaline, not bauais('ly i)unctatc; legs reddish-yellow, tarsi white A. iNiKASCiArrs, s|>. nov. 2. All coxa- pale, except sometimes the hiud coxit 3 All coxa' and femora black. Posterior tibia' black, rest of the legs rufous. Head coarsely rugose; antenniu long, dull rufous, densely pilose; mesonotuni with furrows ^ A. Ruuosrs, sp. nov. Tibiie and tarsi dull honey-yellow, the tibia- more or less fuscous at tlu' middle. Head linely, closely punctulate; antenna- dark brown, the. scape an«l pedicel rufous; mesonotum without furrows 9 A. tibialis Say. 3. Hind coxa' blacker at least basally. Legs rufous, mesouotal furrows indicated only anteriorly. Head and thorax shining, sparsely irregularly shagreeiied, the collar trans- versely rugulose; antenna' brown-black, the scaiie rufous. $ A. poLiTis, sp. nov. Posterior femora black above, legs yellowish. Head and thorax shining, the liead wrinkled, collar rugoso-punctate anteri- orly; antenna', honey-yellow A. pallidicoknis, sj). nov. Posterior femora and tibia- embrowned. Head closely punctate, opac^ue, the thorax sparsely punctate, shining; an- tenna- long, brown, pilose, the scape rufous 9 A. itncticei'S, sp. nov. Hiud coxa* black above toward liase, rest of the legs rufous; mesimotal fur- rows not at all indicated. Head closely, finely punctate, opaciue. collar rugulose anteriorly, nu^souo- tum closely microscojiically punctate? A. Mi.vi'rrs, sp. nov. All coxa' pale, legs reddish-yellow. Mesonotum ]>oli8hed, the furrows slightly indicated anteriorly. Head finely closely punctate, subopatjue, collar very short, rugujosc! at sides; antenna- as long as the- body, pilose, the second and third joints shorter than the scape,, the fourth and beyond as long as the scape. ^ A. I'oi'ENoEi Ashm. Anteon unifasciatus, sp. nov. 9 . Length 1.8""". Black, shining; the heart opaque, dosely, densely punctured; the uieso- and pronotum more sparsely xmnctate, sparsely pubescent, the latter somewhat transversely rugulose anteriorly; nu>ta- thorax rugose. Antenna', mandibles, i>alpi and tegulii; reddish-yellow. Anteniue 10 jointed, a little thickened at tii>s, the scape 3i times as long as the pedicel, the first tlagellar Joint a little shorter than the pedicel, the second and third nearly equal, much shorter than the first, the remaining joints all longer and stouter. Wings hyaline, with a broad dusky band across the stigraal region of the wiug, the veuation pale or hyaline, the large stigma brown. Habitat. — Biscayne Bay, Florida. Type 9 in National Museum. "' * — - — _-^. __ . -_..:_ Described from a single speciuieu taktiii by E. A. Schwarz. 96 BULLETIN 15, UNITED STATES NATIONAL MUSEUM. Anteon rugosus, sp. iiov. S . Leiigtli, 4.3""". Head and thorax, except the disk of mesoiio- tum and wtutelhun, very coarsely rugose, the niesonotuiii and scuteUuni sparsely but coarsely punctate; head very large and thick, the face with silvery white hairs; mandibles, scai>e, tips of anterior femora, their tibiae and tarsi, tV'rruginous; rest of legs, ex('ei)t the tarsi, black; tlagelluni brown-black, very pilose; wings hyaline, the stigma large, brown-black, with a i)ale spot at base; nervures distinct but pale. Ab- domen very narrow, small, jtolishetl, black, subconipressed. Antenna'- 10 jointed, as long as the head ami thorax united, tapering toward tips, the flagellar joints nearly equal in length, four or more times longer than thick, the scape thicker and a little longer thau the tirst flagellar joint. Habitat. — Illinois. Type in Coll. Ashmead. Described from a single specimen. Anteou tibialis Say. liost. Jour., I, p. 284; Lcc, Ed. Siiy't« Works, u, ]>. 730; Ashin. Eut. Am., ill, p. 74; Cress. Syn. Hym. p. 24t). $ . Length, 3""". lilack, shining; head and piothorax finely punc- tured; mesouotum smooth, without furrows; metathorax rugoso-punc- tate with some elevated lines toward base. Antennae 10-jointed, fus- cous, covered witii a short i)ubescence, the scape and pedicel dull yel- low; flagellum subdavate, brown, the joints after the flrst less than twice as long as thick. Wings hyaline, the stigma brown, the neivures hyaline, subobsolete, the stigmal vein very short, scarcely half the length of the stigma. Legs black, extreme tips of the femora and tibise and tarsi dull honey-yellow. Habitat. — Indiana and District of Columbia. The specimen from which this description is dra n up was taken by Mr. Schwarz, and agrees exactly with Say's description. Anteou politus, sj). nov. (PI. VI, Fig. 2, 9.) 9. Length, 2.6'""^. Polished black; head, collar, and mesopleura irregularly microscopically shagreened ; metathorax rather coarsely rugose; collar distinct, less than half the length of the mesouotum; nu'sonotum with furrows indicated only anteriorly ; legs (excei)t the pos- terior coxie, which are black basally, and the posterior tibia' and tarsi, which are fuscous) rufous. Antenme 10-jointed, reaching only a little beyond the teguhe, brown-black, the scape rufous; flagellar joints only a little hinger than thick. Wings hyaline, the stigma large, brown, the nervures distinct pale yellow, the stigmal vein about as long as the stignui. Abdomen ovate, subpetiolate, polished black, depressed, not •juite as long as the thorax. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID.E. 97 Habitat. — Toronto, Canada. Typein Coll Ashniead. l)«'scrib«!(l from a sin}^U^ siHiciinon rcci^ivort from Mr. W. llaj^ue Har- rington. Anteon pallidiconiis np. nov. 9. Length, 1.5""". Black, shining; liead large, brojid, finely sha- greeiied; collar, inesopleura, and metathorax rugose; legs yellowish, l)osterior coxa', their femora, above and beneath, and tips of their tibise black or fuscous. AntiMinui lO-Jointed, rather short, entirely honey- yellow, the tiagelluni a. little thickened toward tip; first flagellar joint about one-third longer than the pedicel, the tw(j following subequal, joints 4 to 7 stouter, scarcely long«;r than thick, the last ovate, nearly twice as long as the penultimate. Aresonotum and scutellum i>olished, impunctured, the mesonotal furrows not extended through to the scu- tellum. Wings hyaline, the stigma brown, the nervures yellowish, dis- tiiut. Abdomen ovate, depressed, polished black, much narrower, but as long as the thorax. Habitat. — Utah Lake, Utah. Type in Coll. Ashmead. Describe'! from a single specimen given to me by Mr. E. A. Schwarz. Anteon puncticeps sp. nov. i . Length, 1.75"'"'. Black, closely punctate, the disk of the me- sonotum and the scutellum i)olished, impunctate; head rather coarsely jmnctate; mandibles, palpi, scape, and aut'^i or and middle legs, pale or brownish-yellow; posterior legs dark brown, the trochanters, knees, and tarsi pale; middle tibite a little dusky cowards tip above. Auten- me 10- jointed, the flagellum brown, pilose; the scape is three times as long as the pedicel; first flagellar joint ve.y slightly shorter than the following, the following Joints being 3 times as long as thick. Parap- sidal furrows only indicated anteriorly. Mesopleura and metathorax rugose. Wings hyaline, the stigma pale brownish-yellow, the nervures distinct but pale; the stigmal nervure is a little longer than the stigma, angularly bent before the tip. • Habitat. — Arlington, Va., and Vancouver Island. Types in Coll. Ashmead. Two specimens. The specimen from Vancouver was obtained through the colle<'tor, Mr. H. F. Wickham, the other was taken by myself at Arlington, Va. Anteon minutus sp. nov. 5. Length, 1.2™"'. Black, shining; the head and thorax with a close, delicate punctuation; the scutellum smooth, highly polished. Antennje and legs brownish-yellow, the former dusky toward tips; 21899— No. 45—7 08 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. posterior coxa^ above, the middle tibia; above, and the posterior femora and tibia? above, more or less piceous. Antenna* 10- jointed, reacliing to the tij) of m etathorax, incrassated toward tlie tips, tlie terminal joint twice as h)ng as the penultimate; the pedicel stouter but not longer than the first Hagellar .joint, the joints beyond submoniliform. The collar is about one-third the length of the mesonotnm, above finely, transversely ruguh)se; ni.esonotum without furrows; scutellum smooth, i)olished, with a row of punctures surrounding the jxjsterior margin; metathorax finely rugose. Wings hyaline, the veins i)ale, the stigma large, brown, with a pale spot at base, the stigmal vein short. Abdonu'U small, ovate, subpetiohite, smooth and shining, about as h)ng as the thorax, excluding the collar. Habitat. — Washington, ]). C. Type in Coll. Ashmead. Described from a single specimen given to me by E. A. Schwarz. The species is the smallest known, and could easily be mistaken for a small AphelopuH. Anteon Popenoei Aslmi. Dryinun Popenoei Ashni., Bull. No. 'A, Kaiifs. Exper. Sta., App., j). 1, .Iiiiu', 18^(8. ^ . Length, 2""". Black ; head subopaque, microscopically punctuate ; thorax and abdomen polished, black; metathorax and nu^soplcura finely rugose; the superior edge of the truncature in the former mar- gined. Clyi)eus anteriorly arcuate, snjooth. Mandibles 4-dentate, i)ale brown. Antenna? 10-Jointed, brown, with sparse, long, white hairs; pedicel small, half the length of the scape; first flagellar joint longer, but shorter than the fourth; fourth joint and those beyond, except the last, nearly equal, about as long as the scape. Wings hyaline, the stignKi large, i)ale-brown, the stigmal vein short. Legs, including coxie, reddish-yellow. Habitat. — Riley County, Kansas. Type in Kansas State Agricultural (College. MYSTROPHORUS Forster. Hyiii. Stnd., ii, p. 91 (1856); Kiithe, Borl. Eiit. ZoitN., la'iR, p. 120. (Type M . formicaformis Rtithe.) Head large, broad, subquadratc, nearly twice broader tluui the tho- rax, the occiput not emarginate; ocelli 3, triangularly arranged; eyes oval. Antenna? in both sexes K^jointed, in 9 subclavate, the pedicel small, the first flagellar joint a little longer and slenderer than the scape, the following .shorter. Maxillary ])ali»i 4-jointe(l; labial palpi -jointt'd. v ; ' Mandibles truncate at tips, with .'{ nearly equal, acute teeth. MONOGRAPH OF THE NORTH AMERICAN PROTOCTRYPID^.. 99 Thorax <'l<>iijjate; the protUorax nearly twice as hm'^ as the nieso- thorax; iiuisoiiotniu shoit, seiiiicircular, without furrows, the scutelhim small; luetathorax hujie, longer than the prothorax, no» areolated. Front wings in ^ short, sptton-shaped, with two basal e»'lls, a stigma, and a stigmal vein; 9 ajtterous. Abdomen short, ovate. Legs as in Aphclopus. A peculiar little genus, closely allied to Aphelopus, but rea«liiy dis- tinguished by the long and broad prothorax and the absence of meso- uotal furrows. The genus is unknown in our fauna. APHELOPUS Diilniaii. Anal. Eut., pp. S-14 (1823); Forster Hym. Stud., ii, p. 91, (Type A. melalriicuH l)alni.) Head transverse, wider than the thorax, the vertex broad, convex, the oc<*iput slightly eniarginate; eyes large, oval, hairy; ocelli 3 in a triangle, but widely separated, the lateral ocelli nearer the margin of the eye than to each other. Antenna^ inserted just above the clypeus, 10-jointed, in 9 shorter than in the S , subclavate, the scape very short, scarcely longer than the second, the others variable iu length, in S filiform, hairy, the scape usually longer than the third, the last joint sometimes thi<'kened. Maxillary palpi h)ng, 5-jointed; labial palpi short, 2-jointed. Mandibles truncate at tips, with 3 small teeth. Thorax ovoid; the prothorax not r part of rluM-ks, tlie clypcus. raaiiili))Ii-s, ami jtaljii wliitf. Clypcns anteriorly Irmieate. Anterior ami middle lei.steiior femora and their tihiie, white 9 A. ai.boi'Ictis h]». nov. Head anteri(H-ly from a litth^ above the iu.sertioii of the antenme and inclndinj; the lower part of the eheekK. dypen.s, and mandibles, pale br«)wnisli yellow ; palpi white. ClyjK'ns anteriorly ar<'nate. Leg« honey-yellow, the posterior til»ia« funcoiis 9 A. akkinis np. nov. Aphelopus rufiveiitris sp. nov. 9 . Leiifjftli, 2 """. Ilt'sul iin«l tliorax bl;wk, iniiiiitely imnctatc ; iib- dojiu'ii rufous ; anteiiniii siiid lejjs lidiiev yellow. Aiiteiini^ lO-joititcd, short, the tlaselluui subchivat*; ; s('a[n> stout, as louj; as the pedirel and first tiajjellav joint united ; first tiaj,'t'llar joint scarcely as \o\\g as the pedicel, joints 2 and .5 sub<*(iual, tliose beyond scarcely as long as thick. Mesouotnin with furrows indhated only anterictrly. Wings hyaline, the nervures, excepting the stiginal, obsolete ; stigma very large, pale brown, the stignial vein very short, oblicjue, only about one-third as long as the stigma. Metathorax roumled ott' ])osteriorly, rather coarsely rugose. Abdomen oblong-oval, much narrower than the thorax, but fully as long, rufous. IIAIUTAT. — Jacksonville, Fla. Type in Coll. Ashmead. A species readily distinguished by the color of the abdomen, the an- tenme, and the venation of anterior wings. Aphelopus ainericanus Ashui. Ent. Am., in, ]>. 74, )>iisnuI(iliiiciii'V\u>in>^..()i\ ..lXii(K\>. 179, ina and sti^^inal vein brown, the other nervures hyaline, subobsolete; the sti{;nial vein is arcuate and a little lon<;er than the stijinni. Abdomen as hmg as the thorax, sti'alpi .'{-jointed. Mandibles bidentate at tips. Thorax subovate, the prothorax not visible from alwve, contracted into a little neck at the iunction with tlie head; uH'sonotuni snbde- pressed, with .'3 furrows; scutellnni lar<.fe. subconvex, lonj^er than wide, I'onnded posteiiorly and with a distinct freninn; nietathorax short, slightly eniarginate, with U teeth at base. Front wings with a larye, oval stignui, a parastignia and a curved stigma 1 vein. Abdomen subsessile, ovate, subctnvex abov'e, (convex beneath, the second segment «>ccupying fidly two-thirds of the whole surface, longi- tudinally striated, the following segments very short, th«^ last i>ointed. Legs moden . pih)se, the fenjora sMghtly swollen, the jiosterior i)air the thickest, tibiae subclavate, the tibial spurs not very well developed, tarsi shorter than their tibiae The genus is distinguished from other genera with 3 mescnotal fur- rows, by the 2 erect teeth or spines at the base of the metath(>rax the larger tiatteued scutelluin, and the longer, denser pilosity of the legs. Two closely allied species are known in our fauna, separable as fol- lows : FKMAI.KS. Lej;s Itliick, base aud tips of tibiae aud tbe tarsi, dark rufous. Autt'ima', except wnuetimcs the tirst 2 Hagellar Joints, black; the first flajicllar joint tbrice as lonj^ as tbe pedicel; nxillie separated from tbe scutelhuu by "> larj^e itunctures II. akmatcs Say Legs black, trochanters, bases, aud tips of femora, tibia", except at tbe middle aud tarsi, rufous. Antenna" black, tbe si^ape, pedicel and first 2 flagellar joints, rufous; flie first fla- gellar joint less than thrice as long as the pedicel; axilbe separated from the scutellum by S punctures H. fisoipenxks Ashui. MALES. Axilla' separated from the scutellum by 5 large punctures. First flagellar joint a little longer than the scape; last joint of palpi nearly twice as long as the fourth H. akmatis Say Axilla' separated from the scutellum by 8 punctures. First flagellar joint not longer than the scape; l.wtjoiut of palpi not one-half lonsrer than the fourth H. fcscipenxis Ashm. H. fuscipennis Ashm. MeiianpilodesfuticipeHnis Ashm., Hull. 3, Kaus. Kx]>. Sta. App., p. ii, 1888. $ 9. Length, 3.5""". Shining black, pilose; head and thorax ante riorly rugose, rest of the thorax smooth, the face with a narrow, smooth space in front of the ocelli, antennal depression absent. Maxillary ]»alpi long, the last Joint H times longer than the fourth. Antenu* 11-jointed, in 9 imu-assated towanl tips, the scape long, obchivate; the 106 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. scape, pedicel, and first two flagelhir Joints are browuish-yellow, the first flagellar joint more than twice as long as the i»edicel ; in S filiform ; the scape is equal in length with the first flagellar joint, the following joints slightly shorter, all black or dark fusc^ous, about 5 times as long as thick; last joint of palpi (me-half longer than the fourth. Prothorax very short, narrower than the mesothorax and bch)W the dorsal line depressed and produced into a sligiit neck. Mesothorax truncate be- fore, with 3 coarsely punctate furrows. Scutellum with a punctate frenum. Axillse separated from the scutcllum by about 8 imnctures. Metathorax armed in the middle, behind the scutcllum, with two blunt teeth or spines. Wings fusco-hyaliu(^, darker beneath the stigma, the stignial vein about twice as long as the stigma; both br.)wnish-black. Legs dark rufous or reddish-brown, the coxai and femoi-a I lack, with sometimes the tibia' bla<*k or dusky. Abdomen with course longitu- dinal striie to near the apex of the second segment. IIABITAT. — Washington, 1). C; Arlington, Va; Maidiattan, Kans., and Wyoming. Types in Coll. Ashmead and Kansas State Agricultural College. Described from several specimens. Habropelte armatus Say. (Pl.vi,Fig.4, ^.) CeraphroH armatua Say, Bost. Jour., i, p. 276; Le<'. Ed., Say, ii, p. 724. Lygoveriis armatus Aslim., Ent. Am., iii, p. 98. Ceraphron urmatns Cress. Syn., Hym., p. 248. Mcgagpilodes nrmatus Aslim., Bull. 3, KaiiH. Exp. Sta., ir, 1888. TelenomuH styyicim Prov. Add. et. ('t)rr., p. 189. S 9. Length, 3.4 to 3.8""". Much like /».scf/><'Ai/j/.s', but may readily be separated by the following differences: The $ antenuic are usually black, except sometimes the first two flagellar joints, which are pale brownish, or at least beneath, the first flagellar joint being thrice as long as the pedicel ; in the S the first flagellar joint is a little longer than the scape; while the axilhe are separated from the scutcllum by five large punctures, which is a constant character in both sexes. In the S the last joint of the palpi is nearly twice as long as the fourth. The legs in both species are variable in color, exhibiting more red in some specimens than in others. Habitat. — Indiana and Arlington, Ya. Types in C/iro» ThoniH., 5fv. 1858, p. 287. (Type L. ramiconiln Boh.) Head transverse, seen from before, the face broader than long, the 108 iniLLETIN 45, UNITED STATES NATIONAL MflSEUM. occiput faintly iiuirgiuod; ocelli 3, arranjjed nearly iu a straight line; eyes large, oval, .sniootli, or but faintly pubescent. Antenna; inserted Just above the clypeus, ll-jointed m both sexes, the scape long, extending above the ocelli; in 9 subflliform, the joints of tiagelluni only slightly longer than thi<'k ; in S some of the flagellar Joints ahva3's dentate or with short liairy branches. -Maxillary i)alpi 5 jointed; labial paliu 3-jointed. Mandibles bidentate. Thorax ovoid, the prothorax not visible from above; mesonotuiu not narro\ve«l anter'orly, with 3 impressed lines; scutellum large, longer than wide, suaconvex, withont a distinct frenuni; metathorax very short, rounded posteriorly. Front wings pubescer t, with a large oval or semicircular stigma, and a slightly arcuate stigmal vein, distinctly longer than the stigma. Abdomen ovate, smooth, subpetiolate, the second segiuent the long- est, not striate at base. Legs finely pubescent, but not pilose, the last joint of posterior tarsi not longer than the sec«md. A genus j)arasitic principally on aphidsid, and probably universally distributed. The males are readily separated from those in Megaspilns, and in the other genera in the tribe having 3 mesonotal furrows, by the ramose or serrate antennic, while the females are separated with dithculty; the non-pubescent or but slightly pubescent eyes, the mesonotum be- ing as wide anteriorly as posteriorly, and the lateral mesonotal fur- rows, before reaching the anterior margin, (curving .somewhat obliquely toward the anterior angles, will, however, at once distinguish them. Our species are not numerous, and may be separated by the aid of the following table, except possibly L. triticum Taylor, which at one time I considered to be identical with L. {Mega,spilus) niger Howard, but which I now consider distinct. Miss Taylor's figure of the male antenme of her species being wholly different from that of Mr. How- ard's species : TABLE OF SPECIES. FEMALKS. Legs, iucluding coxfe, uniformly reddish-yellow L. kloridanus Ashm. Postt^rior coxie black ; legs pale brownish. Antenna! black, scape pale brownish beneath; first flagellar joint as long as the pedicel L. picipes, sp. nov. All coxa* black. Legs black, tibiiu piceous, knees, anterior tibiie, and all tarsi, honey-yellow. AntenniP wholly black ; first flagellar joint not qnite as long as the pedicel. L. STIGMATU8 Say. Legs black or piceous, the tibiic, and tarsi brownish-yellow. Mcsopleura almost smooth ; antenniw black, the first flagellar joint much longer thai' the jiedicel L. niueu How. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID.E. 109 LegH brownish- yellow. Mesopleura Hiuoofh polished; aiitonuio black, the first ihigellar joint not Iong(!r than pedicel L. G-denta rrs, sp. nov. Meaopleura shagreened; lirst flagellar joint much longer than p<'(li<'el. L. rACiKicus, wp. nov. MALES. Ant«nnai ramose. Flagellar joints 1 to 7 ramose; legs uniformly reddish-yellow. L. KLoRiDANi'S Ashm. Flagellar joints 1 to t ramose L. TKIIICI'M T.iylor. Antenn,!' serrate, black. Flagellar joints 1 to 5 dentate; first flagellar joint twice as long as thick. L. STiCMATi's Say. Flagellar joints 1 to ~i dentate; first flagollur joii.t soarcely twire as long as thick. Coxa! black, the lej4S brown, with the anterior tibiie and all tarsi honey-yellow. Stignial vein 1^ times as long as the stigma ,..L. 6-dkn'tatits, sp. nov. Stigmal vein not longer than the stigma L. lAMFOKXicrs. sp. nov. Flagellar joints 1 to 7 dentate ; first flagellar joint stout, 2,J times as long as thick. Mesopleura scaly-punctate L. nigkr How. Lygocerus floridanus Ashm. Chirorerus floridaniiH Ashm., Trans. Am. Ent. Soc. Mo. Proe., 1881, p. 34. Lygocerns liorldanus Ashm., Ent. Am., iii, p. 98. $ 9. Length, 2 to 2.2"'"'. Black, closely, finely punctate, sub- opaque; abdomen black, highly polished, ])ointed at tip, the petiole striate; legs, including coxa^, reddish-yeUow. Antenna; in 2 brown, acuminate at tips, the flagellar joints a little longer than thick; in 5 flagellar joints 1 to 7 ramose, covered with sparse long hairs. Wings hyaline, the stigma large, semicircular, brown, the stigmal vein about one and one-third times as long as the stigma. Habitat. — Jacksonville, Fla. Types, $ and 9 , in Coll. Ashmead. All my specimens were reared from a large aphis on i>ine, Lachnus australis Ashm. Lygocerus picipes, sp. nov. 9. Length, 1.8'""'. Black, subopaijue, finely shagreened; abdomen black, polished ; legs brownish, piceous, the trochanters, knees, and tarsi yeUowish, hind coxse black. Antennie 11-jointed, acuminate at tips, brown bliick, the scape yellowish beneath; the pedicel is a little longer than the first flagellar joint; the second flagellar joint a little shorter than the first; the third and following slightly longer. Wings hyaline, the large stigma dark brown, the stigmal vein less than twice as long as the stigma. / > > Habitat. — Ottawa, Canada. -- -— 3 ~ r Type in Coll. Ashmead. Described from a single spem W. Hague Harring- ton. The color of the anterior and middle coxie and the scape beneath will at once separate the species from those that follow. 110 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. LygGcerus triticum Taylor. Ceraphron triticum Taylor, Am. Af?ric. ISfifl, p. liOO, f. 1 ; Cn-ss. Syn. Ilyiii.. )>. 248. This Hy does not correspond with the above {('eniphron (le/itriirtor Say), therefore I have named it ^i/icvuH, from the hotaiiiial name of wheat. It is not of sncli a shining black as Mr. S.iy'.s liy, Imt is rather rusty in ijipearance from a few hairs scattered over its body. In some specimens, when very fresh, the le<;s have a bright tinge of yellow. The antenna^ (6, Eig.-2) are tcrmcMl sctigerons (having the basal joint large) and tlie last four globular, the intermediate one lurnished with fonr long bristles resembling plumes. This is a very surt; mark for distinguishing this family according to European classitication. The eyes an; large in ]>roportion, the paljii 3-joiuted. The fore wings have snbmarginal cells, with a laint nervure run- ning to apex. The under wings have a long nervure running through and two smaller ones descending to the inferior region; these are so very slight, that you can only see their existence by a deep 8haAro« /rt^tcMm Smith, Rep. N. J. Exp. Sta., 1890, p. 502, f. 18. 9. "Length, 1.0"'"'; expanse, .'{.33'"'"; greatest width of fore wing, 0.62""". Scape of antennae very long, somewhat swollen beyond middle ; funicle long, curved, all joints increasing gradually in width from ped- MONOGRAPH OF THE NORTH AMKRICAN PROCTOTRYPID.E. Ill icel to club; joint 1 of fuuicle somewhat longer than pedicel, Joint 3 shorter, joints 4 to 8 increasing in length very slightly. Head and mesouotnm very faintly shagreened, but still glistening; lower portion of niesopleura and all of abdomen perfectly smooth. Abdomen sub- ovoid in shape, acutely pointed at tip. Radial vein only slightly curved, extending a little more than half way from stignni to tip of wing. General color jet black; all trochanters, femora, and wing veins dark- brown; all tibiic and tarsi lighter brown." (Hoirard.) The $ is slightly smaller, with the flagellar joints 1 to 7 dentate, the first being 2J times as long as thick, excluding the i>edicel, while the mesopleura are scaly- jiunctate. Habitat. — United States. Tj^es in National Museum. Parasitic on the wheat aphis, Siphonophora avenw Fabr. Allied to L. stigmatus Say, but relatively larger, and at once distin- guished by the difference in the length of the flagellar joints. Lygocerus 6-dentatus, sp. nov. (PI. VI, Fig. 8, . nov. First flagellar. joint not much longer than the second, the second and the fol- lowing scarcely twice as long as thick. Antenna^ brown; legs nifous, abdomen piceous or rufous toward base. M. I'KRGANDEI. MegaspiluB anomaliventris, sji. nov. 9. Length, 2.4'""'. Black, shining; head and thoi ax finely aluta- ceous; antenna^, brown-black; legs reddish-yellow, the posterior coxii? a little dusky ])asally; abdomen polished black, becoming piceous at apex. Eyes very large, occupying the greater portion of the sides of the head, pubescent. Antennsb 11-jointed, the tlagellum flagellate, the scape long, projecting beyond the ocelli; pedicel small, about half the length of the first flagellar joint, the latter the longest joint, the second short than the first, the third and following joints to the last stouter an(' nearly of an equal length, very slightly longer than the second, tliri last more slender and a little longer than the penultimate. Wings hyaline, pubescent, with a taint dusky blotch below the stigmal vein, the stigma large oval, truncate behind, brown, the stigmal vein less than one and a half times as long as the stigma. Habitat. — Marquette, Mich. Type 9 in Coll. Ashmead. Described from a single specimen collected by E. A. Schwarz. Megaspilus Popenoei sp. nov. 9 . Length, 1 .8 """. Black, shining, impunctured, with a sparse greyish pubescence; scape, pedicel, collar, and legs, including the coxa?, brown- ish-yellow; flagellum black, abdomen beneath and towards base piceous. Antenna; 11-jointed, subclavate, the flagellum slightly more than twice as long as the scape; the first flagellar joint is equal to the pedicel, the second, third, and fourth shorter than the first but stouter, the follow- ing longer than thick, the last conic, nearly twice as long as the penul- timate. Wings subfuscous, hyaline at base, the parastigma slightly developed, the stigma ovate, the stigmal vein about one and a half times as long as the stigma; all the nervures dark-brown. Abdomen longer than the head and thorax together, compressed and gaping open at apex. Habitat. — Manhattan, Kansas. Type 9 in Kansas State Agricultural College. ' Described from a single specimen received from Pro£ E.A. Popenoe and in honor of whom the species is named. MONOGRAl'll OF THK Noimi AMKKICAN PKOC'TOTUYIMD.E. 115 Megaspilus ambiguiis >\t. nm . ^ 9. Lcnjytli, 1,2 to 1,(1""". Hltn-k, sliiniiijn, rmcly iiliitiircous; scai>o and l(';;s biuw iiisli-vfllow. Tlio postcridir.oxa' black basally. In tlu' ^ the iHostciiiuni and Unt collar laterally are yellow. Mandibles an«l palpi ])ale. Antemue ll-joint<'d, in 9 tlu^ tla^elbun lia^^elJate, the ]»edicel and first llajjellar joint of an cipnil leii<>ili. the tollowin;^- to tlie last only slightly l<»n<;er than thick, the last joint two and a half times as loMj;' as thii'k; in the c? Illiforni, the tlaj^ellnni black, jiubescent, the jiedicel ami the tirst tla<;ellar Joint toji'cther distinctly shorter than the seai»e; the first joint of the tlaj;ellnin is not uioiv^ than 4 times us long as thick, the second shorter, tin' followin;^' to the last nearly equal, a little less than thrice as lonj; as thick, the last joint abont one-fourth ionyer than the penultinnite. Wings hyaline, very faintly tinged with fusc<>ns, tlu> stigma brown, the stigmal vein two and a half times the length of the stigma, IIAIJITAT, — Arlington, V^a., and Washington, I), (J. Types 5 9 in Coll. Ash mead. Described from several specimens taken by Schwarz, I'ergandc^ and myself. The species is closely allied to ,1/. Itcrirrps, but it is slightly larger, with a tine alutaceous sculpture, and with a difference in the relative length of the antennal joints. Megaspilus striatipes s\t. nov. (PI. VI, Fijr. 7, 9.) 9 . Length, 1,4"'"'. Black, shining; vertex (»f head and thorax very faintly sbagreen«'d, the face smooth and liighly polished. Scape and legs brownish-yellow, the posterior femoia and tibia' with a fuscons streak above. Anteunai 11-jointed, the tlagj'llum Hagellate, stout, black, a little more than twice the length of the scape; the scape is long, extending beyond the ocelli; the i)edicel is much shorter than the tirst flagellar joint; the latter is much longer and slenderer than the second; remaining joints widening, but still all a little longer than thick, the last very slightly longer than the penultimate, AVings fus- cous, the stigma large, brown, the stigmal veiu less than twice the hmgth of the stigma. Habitat. — Ottawa, Canada. Type 9 in Coll. Ashmead. Described from a single specimen received from Mr. W. IJague llarringtou. - Megaspilus Schvrarzii sp. nov. - -^ 9 . Length, 1.8"'"', Bla<'k, shining, very finely shagreened, the scutel- lum smooth; scape and legs brownish -yellow; the propectus piceous. AntenniB 11 jointed, the flagellum brown-black, about two and a half times as long as the scape, the pedicel a's long as the first flagellar joint, the latter the narrower, the following joints to the last, a little shorter, 11 fi BULLETIN 45, UNITED STATES NATIONAL MUSEUM. but j^iiulually tliickriied, the last Joint twice as long as the pemiltiniate. W injrs hyaline, tlie stigma brown, tlie stignial vein one and a half times as long as the stigma. Abdomen very slightly longer than the thorax, smooth and polished, pubescent towaid tip, the venter Hatter than usually, the petioh' and second segment at base, striate. IlAiniAT. — Washington, 1). <.'. Type 9 in (\dl. Ashmead. Described from a single 8p«*<'imen re<'eived from Mr. K. A. Sehwarz. Megaspilus marylaiidicus h|i. nov. $ . Length, 2.4""", Black, subopaque, finely shagreened and s])arsely nubeseent; the scape, pedicel, and h'gs reddish-yellow. Antenna* 11- jv^inted, the tiagellnm brown, slightly i)aler basally not longer than twice the length of the sca])e; the pedicel yellow, distinctly shorter and thicker than the first flagellar Joint, the sec(»nd shoit«'r than the first, third an«l fourth about eciual, shorter than the fifth, the fifth to the last about equal, very slightly longer than thick, the last twice as long as thick. Wings fuscous, the stigma brown, the stigmal vein slightly more than twice the length of the stigma. Abdomen a little longer than the head and thorax together, black, polished, boat-shaped below, somewhat flat above. Habitat. — Oakland, Md. Type 9 in Coll. Ashmead. Described from specimens received from ]VIr. E, A. Sehwarz. Megaspilus Harringtoni Anhm. Can. Ent. vol. xx, p. 4S. S 9. Length, li to 2.5"'"'. Jilack; head aiul thorax with a fine reticu- late punctuation; abdomen indished black. Antenna' 11 Jointed, the scape and pedicel dull yellow, the flagellum brown l)lack; the pedicel is not quite as hmg as the first flagellar Joint. Legs dull yellow, the posterior voxwt black, the anterior and middle coxa' dusky basally, the ])osterior femora fuscous or dusky. Wings subhyaline, pubescent, the large stigma and stigmal vein brown. Abdomen the length of the thorax, the petiole yellowish. The B differs from ? only in its slightly snmller size and in the long filiform antenna', the Joints of the flagellum being about four times as long as thick, the scape yellowish toward the base. Habitat. — Ottawa, Canada. Types S 9 in ('oil. Ashmead. The types were taken by Mr. W. H. Harrington. Megaspilus hyalinipennis A^bm. Ent. Am., Ill, p. 98; Cress. Syn. Hyni., p. 313. 9 . Length, 2"'"'. Robust, black, alutaceous, with a very sparse, pale pubescence. Antennae 11-Jointed, filiform, dark brown ; the pedicel MONOGHAl'H OF THE NOKTII AMKHICAN rROCTOTRYl'ID.K. 117 is ii littlr slioitei' tlijiii tlu' lirst tlii;;<'lliir Joint, tlu^ socoiid Joint a little siioittT tliiiii tlie first, tin* remaininj;', cxfcpt tin' last, whicli is lonjjer, sul«'<|ii:i! witli second. TiOpfs i)al«' lnown, tlie tVniora and tibiae luscous. Winjis cU'ar Iiyalino, the stigma lar<;o, brown, the stiginal vein alKmt twico tin' l(Mifjtli of the stifjfnia. Abdomen polishejl black, pointed and sparsely jmbescent at tip, the petiole and second sefjment, at base, striolate. HAiurAT. — Jacksonville, Fla. Type 9 in Coll. Ashmead. Megaspilus virginicus, k]>. nov. 9. Length, 2.2""". Itobnst, bliwk, opa«pie, shagreened, with a sparse whitish pubescence; the head inon^ coarsely shagreeneey scifi)e long, reaching nuich be- yond the ocelli, the pedicel very small, rounded, the first flagellar joint more than six times as long as thi<*k, the foHowing joints shorter, subequal. Legs pale rufous. Wings subhyaline, the stigma large, brown, the stigmal vein two and a half times as hmg as the stigma. Habitat. — California. Type $ in Coll. Ashnu'aale or whitish. Antennte 11-jointed, thickened toward tips, the apical joints brown; the flagellar joints, except the last, which is oblong, are not longer than thick. The mesonotal line is only indicated posteriorly, or entirely wanting. Abdomen with a few raised lines at base, the sec- ond segment at apex ti ged with fuscous or brown. Habitat. — Washington, D, C, and Arlington, Va. Types in Coll. Ashmead and National Museum. Described from many specimens taken by myself and Schwarz. The species is much smaller, more slender, and paler colored than the European i. rw/tts Forster (=X.pai/«Z«s Boh.). ATRrrOMXTS Forster. Kl. Mou., p. 56 (1878). (Type A. eoccophagus Forst.) Head transverse, stout, wider than the thorax, when viewed from in front, wider than long; eyes large, rounded, prominent, bare; ocelli 3, triangularly arranged. ■. v .»"^ - Antennse inscrtetl at the elypeus, 11-jointed, in $ serrate, in 9 fili- form, the first three flagellar joints small. . ^ Maxillary palpi 4 jointed ; labial palpi 2-jointed. Mandibles bidentate. Thorax subovoid, the prothorax not visible irom above; mesonotum with a single central impressed line or without impressed lines; the scutellum large, h>nger than wide, the axilhe usually, but not always, separated; metathorax very short, the angles rounded.- Front wings as in Lifgocerus, with a large semicircular stigma. 122 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Abdoineii ovate, subpetiolate, the second and tliird segments tlie longest, subequal, the following short. Legs as in Ceraphron. This genus, as here recognized, dili'ers from Ceraphron in having a stigniated marginal nervure and serrate antennie in the male; and from Lygoeerus and Meympilus in having, at the most, only a single mesonotal furrow. Forster characterized the genus as being without trace of a mesono- tal furrow; but, as [ have found to be the case in Aphanogmus, species probably occur with and withtmt a furrow. A single species is known in America. AtritomuB americanus, sp. nov. (PI. VI, Fig.9, osterior tarsi witb the first joint elongate, joints li-4 subequal. The majority of the species in this genus are minute and closely re- semble those in Aplwnofinnis Thorns., although they are readily sepa- rated by the shape of the scutellum, which is broader, more tlattened, or siibconvex, without a frenum, the antenna' in the males being lilitbrni, not dentate or serrate, as in that genus. Apterous forms are (piite <'ommon and will i)robably prove to be dimorphic forms of the winged species. The records of rearings, with but few exceptions, show the group is almost exclusively parasitic on the dipterous family Cecidomyida^ and the homopterous family Aphididie. The species known to me in our fauna may be thus tabulated: TABLE OF SPECIES. FEMALK8. Winged forms 2 Wingless forms. Brownish yellow, the vertex of head fnscous C. FUSCICEPS, sp. nov. Black, the base of abdomen pale or yellowish. Antcnnie, except scape at base, black C. MiNtJTi's Ashm. Wholly black, with wing pads. Legs golden yellow C. auripes, sp. nov. 2. Wholly black 3 Thorax and abdomen brownish yellow, the head black. C. MEULNOCEPHAIiUS Ashm. Head and thorax black. Abdomen obscure rnfons or piceous, yellowish at base and beneath. Shining, but distinctly i>unctulate; Bcape rufous, the flagellum black. C. PALLIDIVENTRIS, Sp. nOV. Polished, impunctured, angles of metathorax prominent; antenuie brownish- yellow, 4 or ," terminal joints black C. basalis, sp. nov. Head and thorax brownish yellow ; abdomen black ; base and apex of front wings hyaline C. californicus, sp. nov. 3, Head and thorax distinctly, closely punctate. Pleura aciculated ; antennae brown ; legs brownish yellow. 0. PUNCTATus, sp. nov. Head and thorax smooth, or the punctuation exceedingly delicate. Antenufe, teguhe, and legs black; pleura not aciculated; flagellum slender, the joints all longer than thick C. UNICOLOR sp. nov. Antenna;, togula', and legs brownish piceous; trochanters, tips of tibia>, and the tarsi yellowish white C. salicicola, sp. nov. Scape, tegulie, trochanters, knees, tibiae, and tarsi yellow; flagellum sjibcla- vate C. amplus, sp. nov. Scape and legs brownish yellow. -- TegulfE black ; flagellum black, , Wings fuscous C. MELANOCERU8, sp. nov. Wings subhyaline C. pedalis, sp. nov. Teguhepale; antenna' brown, the scape and pedicel yellow; pedicel longer than the tirst flagellar joint, smooth, highly polished. Wings hyaline; flagellar joints 1 to 5 transverse, 6 and 7 quadrate. C. FLA Vise APU8, sp. nov. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPIDvE. 125 VVings snbhyalino; flagellar joints I to 5 traiiaverse, ti and 7 lon'^er than wide C. GLAHKH, sp. nov. Te^iila' piceous ; antenna' fuscous; first flagellar Joint twice as long as the second; wings siiMi valine C. caimnati's, sp. nov. Scape, teguhe, and legs, inelmling the coxa% honey-yellow. First llagellar joint only a little longer than the second; wings clear hya- line C. MKLMPKS, sp. nov. -V MALES. Wholly Idack 2 Not wholly black. Thorax piceous, collar, base of abdomen, and legs bright yellow. ('. i,<)N<;i((>RXis, sp. nov. Thorax black, base of abdomen pale C. j«a.salis, sp. nov. 2. Distinctly punctate. Scape and legs yellow C. PUNCTatus, sp. nov. P'aiutly pnn(!tate or nearly smooth. Antenna' black V. cakinatus, sp. nov. Smooth, polished, iuipunctat*-. Head and abdomen black, the thorax piceous. Antennic dark brown, the scape Ix-neath and legs, pale yellow. C GLABEB, sp. nov. Ceraphron fusciceps sp. nov. 9 . Length, 1'""'. Browuisli-yellow or liouey-yellow, the head more oi less fuscous on vertex; eyes and tlagellum bhick or brown-black; mesopleura sometimes tinged with fuscous. Head and thorax micro- scopically punctulate; scutellum finely striate at base; fiagellum sub- clavate, the pedicel more than twice as long as the first flagellar joint, flagellar joints 2 to 6 transverse, the 7th quadrate, the last fusiform, thrice as long as the 7th. Haiutat. — District of Columbia and Oakland, Md. Types in Coll. Ashmead. Described from 3 specimens. Ceraphron minutus Aslini. AIega8]>ilidcn mhiiila Aslim., Can. Ent., xx, ]». 45). 9. Length, l.li""". Black; abdojnen fuscous, yellowish at base and beneath; scape and legs yellow. The head and thorax are closely, minutely punctulate; abdomen at extreme base striate; pedicel and flagellum black, subdavate; pedicel twice the length of first flagellar joint; flagellar joints 2 to 5 transverse, the 7th quadrate; 8th or last fusiform, three times as h>ng as the 7th. Habitat. — Ottawa, Canada. v^^ % Type in Coll. Ashmead. One specimen; received from Mr. W. Hague Harrington. Ceraphron auripes, sp. nov. 9. Length, 1""". Black, shining; scape brownish-yellow; legs bright yellow. Head and thorax minutely, closely punctulate; wings 126 BULLETIN 45, UNITKD STATES NATIONAL MUSEUM. but sliglitly developed, ext«Mnliii}^ to the base of the iibdomen; abdo- men highly polished black, more than twice tlu^ lengtli of the thorax; tlagellum sub<'-lavate,. joints li to 4 transverse, the otli larger, trans- verse, tlie 6th and 7th quadrate, the last fusiform, tlirice as long as the 7th. Hawitat. — Ottawa, Canada. Type in Coll. Ashmead. Described from a single specimen received from Mr. VV. Hagu*'! Har- rington. Ceraphron melanocephalus Ashiii. Copidofiomd mehniocephahim Asliiii. Trans. Am. Ent. Soc, Vol. xm, j*. 131. 9. Lengtli, 1.2""". Head black; thorax abdomen and legs, brown- ish-yellow; flagellum black, paler or brownish at base. Head and thorax closely minutel}' punctate, the occiput with a delicate median carina from the ocelli; Hagellum clavate, the 3 terminal joints being very large and thick and as long as all the others (excepting the sca])e) united the funicle joints 1' to .") transverse; first club joint quadrate, the second, a little longer than wide, the last not cpiite thrice as long as the second. Wings subhyaline. Habitat. — »Tacksonville, Fla. Type in Ce, pedicel beneath and al tij), and legs, pallid- yellow; tegulic yellowish ; wings hyaline, the stigmal vein yellowish, long and curved, forming almost a closed nmrginal cell; marginal vein brownish. Autennai lO-jointed, the flagellum subdavate, brown-black; scape long, half the lengtli of the flagellum; pedicel a little longer than the first flagellar joint; second flagellar joint scarcely two thirds the length of the flrst; the third, fourth and fifth, transverse, but in- creasing in length and width, the sixth, quadrate, the seventh, oblong- quadrate, the last fusiform, as long as the two x)receding joints united. Angles of metathorax tubercular, the metapleuia finely rugose, bounded by a carina above. Abdomen a little longer than the head and thorax together, pointed at tip and subcompressed at apex be- neath. .^,^-^,,-..=,^—-=-^-;~^.- -.--,.=—-— ■.--:,--- - ^-^■■--.. .--,-. --^- - -- -- --— ,- HABITAT. — Fort Pendleton, Md. Type in ('oil. Ashmead. Described from a single specimen taken by Mr. E. A. Schwarz. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPIDiE. 127 The species comes nearest to C. hanalh, but u is slightly larger, tlie relative length of the flagellar Joints different, the legs pallid yellow, the wiugs hyaline, while the sculpture is wholly different. Ceraphron basalis, ap. nov. $ 9 , Length, 0.8 to 1.2""". Head and thorax polished black ; ab- domen rufous or nifo-piceous, yellowish at base; scape, and somt'times the pedicel, and two or three of the basal flagellar joints, aud the legs yellow or brownish-yellow. Wings subhyaline, slightly tinged, the stigmal vein long, curved. In the 9 the flagellum is twice the length of scape, subcluvate, the joints 2 to 5 transverse, the 5th longer and wider than the 4th, Cth and 7th quadrate, the last fusiform, as long as the 0th and 7th united. In the cJ the flagellum is filiform, IJ times as long as the body, or about 5 times as long as the scape, pale brown, the first joint the longest. Habitat. — District of Columbia and Arlington, Va. Types in Coll. Ashmead. Described from 8 specimens (2^09 ), collected by Mr. E. A. Schwarz and myself. Its smaller size, very highly polished, impunctate surface, and the difference in the antenna and color of wings at once distinguish it from C. pallidiventris. Ceraphron califomicus, sp. nov. 9. Length, 0.8"'"*. Head and thorax brownish-yellow; abdomen black; eyes brown. Antenna 10-jointed, two-thirds the length of the body, the flagellum brownish beyond the first joint; scape a little longer than half the length of the flagellum; pedicel and first flagellar joint equal, nearly twice as long as the second"^ last joint as long as the pedicel. Thorax shining, but feebly, minutely punctulate. Wings hyaline at base and apex, fuscous from the basal third to near the apex. Habitat. — Folsom, Cal. Type in National Museum. One specimen; taken by Mr. A. Koebele, July 12, 1885. Ceraphron punctatus, sp., nov. (PI. vii, Fig. 2, 9.) S 9 . Length, 1.1 to l.G""". Black, finely, closely punctate, sub- opaque; antennte 10-jointed, brownish-yellow, the apical half fuscous or black ; scape obclavate, nearly two- thirds the length of the flagellum ; pedicel longer than the first flagellar joint; flagellum slightly incras- sated toward tip; first joint twice as long as thick; joints 2 to 5 transverse, sixth and seventh very little longer than wide, the last joint fusiform, as long as the two preceding united. Vertex with a slight grooved line between the lateral ocelli. Eyes pubescent. Mandibles 128 BULLETIN 45, UNITED 8TATE8 NATIONAL MUSEUM. pale rufous. Mosoiiotuiii with a central impressed line. Pleura sliiiiiii}?, but more or less aeieulated. Metatliorax rugose, very Hhort, the posterior anj^les toothed. Teguhe dull rufous or i)ieeous. Wings subfuseons, the venation pieeous, the stignial nervure long, slightly curved, about three times as long as the linear marginal vein, and form- ing almost a elosed marginal eell. Kegs, including coxa-, browidsh- yellow. Abdomen stout, longer than the head and thorax united, polislied black, with a slight striated elevation at base of the second segment above. The (5 agrees with the 5 , except that the abdomen is shorter and slightly pieeous at base, the antennae filiform, ll-jointed, the scape and legs brownish-yellow, while the tlagellum is brown. The antenna' are as long as the body, the scape as long as the first three flagellar joints united ; i)edicel very small ; first flagellar joint slightly more than twice as long as thick, a little stouter than the others, and subequal with the last joint, the latter the longer joint; the three following joints are subequal, the four following gradually become a little longer, the last very slightly h)nger than the first. Habitat. — Virginia, Maryland, and District of Columbia. Types in Coll. Ashmead and National Museum. Described from many specimens. Ceraphron unicolor, sp. nov. 9 . Length, 2 to li.l""". Wholly black, shining, the articulations of the legs and the tarsi alone pale brown ; head and thorax faintly sculp- tured ; face deeply impressed above the insertion of antenna*, with a grooved line extending forward from the front ocellus ; eyes large, pubescent. Antenn;e lO-jointed, slender, the scai)e long, obclavate, a little longer than half the length of the flagellum ; first flagellar joint longer than the pedicel, about four tinu's as long as thick, the second two thirds the length of the first, the two fidlowing subequal, those be- yond longer, at least 2^ times as long as thick, the last joint being the longest, and longer than the first. Thorax with a central grooved line, which is subobsolete anteriorly. Post-scutellum toothed. Metatliorax very short, with the posterior angles acute. Wings subfuseons; the stigmal vein long. Abdomen stout, highly polished, black, as long as the head and thorax together, with a striate space at base. Habitat. — Cheyenne, Wyo., and Alta, Utah. Types in Coll. Ashmead. A single specimen of this species was taken by Schwarz in Utah, and another by Wickhara in Wyoming. Ceraphron salicicola, sp. nov. 9. Length, 0.0" '". Black, shining, feebly punctate; face emargi- nate; anteniiiii as Umij; as Joints li to 4 united. IlAiiiTAT. — Distriit ot'Oolumbia, ami IJladeusburg, Md. Types in Coll. Ashmead. Three specimens, all taken by Mr. K. A. Sehwarz. Ceraphroii cariiiatus, Np. nov. £ 5. Len^^th, 1..5 to 2""". Polished blark, feebly punctate; an- tennae brown-bla(!k, except a yellowish ring between the pedicel and tirst tlagellaijoiut; tlagelluni very slightly thickened toward tip; ped- icel and tirst tlagellar joint very hnig, the latter slightly the longer, joints 2 to 4 subeqiial, the second two thirds the length of the tirst; joints 5, (>, and 7 about equal, longer than the second; last joint not quite as long as the sixth and seventh united. Thorax with a central grooved line; scutc'lluni a little longer than wide; post-scutelluin with a tooth; jKisterior angles of uietatliorax ju!utely i)rondueut; iuetai)leura bounded above by a high (carina. Wings subfuscous, the venation brown, the stiguial vein long, curved. Abdomen polished black, lA times as long as the thorax, the second segment more than twice as long as tlu^ fol- lowing segments united, striate at base. Basal joint of hind tarsi as long as the following joints united. In the i the 11-jointed antenuie are long, filiform, the tlagellum alone being longer than the body; scape and legs brownish-yellow; tlagellum brown-black; first tiagellar joint about 5 times as long as thick, the following joints to the last shorter, nearly ecinal, the last as long as the first; collar and base of abdomen yellowish, the latter not much longer than the thorax. Habitat. — Oakland and Bladensburg, Md.; District of Columbia, and Virginia. Types in Coll. Ashmead and National Museum. Several specimens.* Ceraphrou mellipes, up. nov. S 2. Length, 0.8 to 1""". Polished black, impunctured; scape, pedicel, and legs, bright honey-yellow; tegul.e yellowish ; wings clear hyaline. Antenna? in $ 10-jointed, the tlagellum brown, subclavate, the first funicle joint obconic, two-thirds the length of the scape; joints 2, 3, and 4 as wide as long, fifth subquadrate, sixth and seventh a little longer than wide, the last a little longer than the two preceding united. In the $ the antenna} are 11-jointed, filiform, not longer than the body, the first tiagellar joint 1| times as long as thick, longer than the i)ed- icel, the following joints, except the last, scarcely longer than thick, l)ubescent, the last joint a little longer than the first. In both sexes the face is impressed above the insertion of the antennae ^^ith a grooved line in front of the front ocellus; thorax with a central impressed line; 132 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. post-acutellum with a minute tooth, while the jmsterior angles of meta- thosnx are slightly acute. Habitat. — Jacksonville-, Fla. Type in Coll. Ashmead. Described from 1 S and 2 $ specimens. It might be mistaken for C. flaviscapusy but it is a smaller and more slender form ; the autennic are not so stout, the joints relatively different in length, while the wings are clearer. Ceraphron longicoruis, sp. nov. S . Length, 1.2'"'". Highly polished, impunctured ; the head and api- cal two- thirds of abdomen, black; thorax piceous ; collar, scape, legs, and basal one-third of abdomen, yellow or tiavo-testaceous. The antennae are long, filiform, 11-jointed, the llagellum brown; first flagellar joint nearly three times as long as the T)edicel and as long as the terminal joint; the other joints are slightly shorter, about four times as long as thick, and all with sparse iong hairs. Wings hyaline, strongly fringed, the stigmal vein long, curved. The face is impressed above the an- tennte ; there is a fovea in front of the front ocellus, the mesonotum with a central grooved line, the post-scutellum toothed, while the posterior angles are scarcely prominent, reduced to a minute tubercle. Habitat. — Fort George Island. Florida. Type in Coll. Ashmead. Described from a single specimen collected by Dr. R. S. Turner. APHANOOMUS Thuiusun. % Synarsis Forster, Kleiue Monog., p. 57 (1878). (Type A. fumipenniH Thorns.) Head transverse, the frons convex, the occiput slightly excavated and delicately margined ; ocelli 3, close together, triangularly arranged ; eyes oval or rounded, usually pubescent. Anteunai inserted just above the cly pens; in $ 10-jointed, clavate, in $ 11-jointed, subserrate, i)ilose. . Maxillary palpi 4-jointed, labial palpi 2 jointed. Mandibles bifid. Thorax subovoid, compressed at sides, convex above, the collar small ; mesonotum usually with a delicate median impressed line, which is often subobsolete or entirely wanting; scutellum conical, convex, at least twice as long as wide, the frenum usually wanting; metathorax very short, abrupt, the angles not prominent. Front wings pubCvScent, with a short, linear marginal vein and a short, slightly curved, stigmal vein. Abdomen ovate, subsessile, compressed beneath, convex above, and a little pointed at tip; the petiole very small and short, the second segment very large. MONOGRAPH OF THE NORTH AMERICAN PROCTOTKYPIDJ5. 133 Le^fs pubesceut, the posterior coxse pilose behind ; the last joint of posterior tarsi almnt twice as long as the second. This genus is very closely allied to Ceraphron Jiirine and it requires great care to se- .urate it from that genus. The frons is more convex, the facial impression less distinct, the scutellum longer and convex, without teeth at base of metathorax ; wiiile, as a rule, the metathoracic angles are less distinct. Spnarsifi Fiirster, seems to be without doubt identical, his type S. piilla being evidently a small species of Aphanogmus, without the cen- tral mesonotal furrow and with the head held horizontally, a position often assumed by many species in the group. All the species known are minute and could easily be mistaken for species in the tribe Telenominl in the subfamily SceUonina. The species known to me in our fauna may be separated by the aid of the following table : TABLE OF SPECIES. Winged 2 Wingless. ' , T e • / ^ ' A. VAKIPKS, sp, nov. -. Legs rufopiceous (var.) ^ ' ' Apheinogmus niger, sp. nov. S . Length, 1""". Black, shining; antennte and legs dark brown, the tarsi whitish. Antenna; ll-.jointed, very slightly thickened towaids tips ; scape obclavate, not reaching beyond the ocelli ; first flagellar joint long, about four times as long as the pedicel, the following joints of nearly an equal length, all emarginate at base and covered with long, sparse white hairs. The thorax is compressed, much narrower than the 134 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. , head, convex above, with a single median impressed line; iiiesopleuia smooth, polished; scutellum "ully twice as h)ng as wide, extendiog to the apex of the metathorax, its tip slightly projecting. Wings aborted. Abdomen small, not as long as the thorax, subpetiolated, highly pol- ished and subcompressed. Habitat. — Washingt. Abdomen broadly oval or long oval, the third segment mucli the longest ; post- marginal vein not developed. Marginal vein very short, punctiform or thickened, not or scarcely as long as tho stigmal vein; stigmal Aein short, thickened at l>a8e and ending in a rounded stigma; 9 antenna^ 7-jointed with an uujointed club; 9 nsually apterous ; $ antenuiel2-jointed, filiform-moniliform; lateral ocelli usually close to the inner margin of the eye. .Tribe ii.— B.eini. Marginal vein very long, 5 or 6 times as long as the exceedingly short stigmal vein ; stigmal vein not thickened at base; 9 antennsB 12-jointed, clavate, ^ the club 5 or 6 jointed; i antenna' 12-jointed, filiform, the fnniclar - ^ iointslong; lateral ocelli faraway from the inner margin of the eye, ^ * ,7 never very close Tribe in. — Teleasini. Abdomen sessile, most freuuii:il 8»»}^iiieut not, or very litth?, louj^er tLun wide 2 Second ubduniiiial Hegmeut jibout twice as long as wide. Head trans ve^s(^-q^adl•at^'. Legs, inclnding coxa; and scajie, reddish-yellow; thorax flattened. Moih-rute T. hi'hbardi, sp. uov. Legs, including coxiu and scape, pallid yellow ; thorax convex. Minute T. pusillus, sp. nov. Head transverse. Legs and anteuuie black, knees and tarsi honey-yellow. -T. koeuelei, sp. nov. 2. Pedicel distinctly longer and thicker than the first liinicle joint 3 Pedicel not longer than the first funicle joint. Scape black, tlagellum brown-black, tip of pedicel yellow, fnnicle joints 2, 3, and 4 equal, nioniliforni. Legs black or piceons, trochanters, knees, anterior tiliiiB, and tarsi, yellow. T. NIGKI8CAPUS, sp. nov. Antennae brown-black, pedicel yellow at tip, shorter than first funicle joint, funicle joints 2 and 3 subequal, the third transverse. Legs piceons, trochanters, anterior tibiaj beneath and tarsi, brown. T. UTAHENSIS, sp, nOV. 3. Scape of antennw pale or pale at base »)r tip 4 Scape of antenna', black or brown-black. CoxiB pale. Marginal vein punctiforin. Claval joints 2, 3, and 4 about equal, quadrate T. noctu.^, sp. nov. Coxai black. Funiclar joints 2 and 3 longer than thick, _; Legs black or piceons, trochanters, knees, tips of tibise and tarsi, yellow. First abdomal segment and the second, at base, striate. Marginal vein J the length of the stiguial. ,_ Second abdominal segment wider than long.. .T. GNOPH^iELiE, sp. nov. , • . Second abdominal segment longer than wide. * T. CALIFOKNICUS, sp. UOV. Marginal vein punctiform T. gracilicornis, sp. uov. Legs pale rufous. Thorax and scutellnm closely punctate; head large, polished. T. PER8IMIUS, sp. nov. 144 lUJLLETIN 45, UNITED STATES NATIONAL MUSEUM. Funiclo juiiiU 2 auil 3 roiintltMl, not loii^or thuii thick. LogH piceoiiH or brown-black, truchatitcra, kiiecH, ti|Mof tlbiin auti tarsi pale or yellow isli. FirHt abdoniiiiiil M-gnicitt striate. Marginal vein j^ thu lon^th of the sti^mal; hoad 3^ times as wide as long T. OKAI'T.K How. Marginal vein nearly ^ the length of the stignial; head 3 times as wido as long T. hpii.osomatis, sp. nov. Marginal vein as long as tJie stignial T. minimus, sp. nov. Legs dark-brown, the tarsi whitish. Marginal vein about i the length of the Mtignial.. T. ukliotiiiuis, sp. nov. Legs piceons or browu-blaek, trochanters, knees, tips of tibiiu aud tarsi, pale or yellowish. First abdominal segment not striate. • Eyes pnbescent T. OROYI.*:, Fitch Eyes l>are or only faintly pubescent. Marginal vein punctiform T. ic'iiTHYUKiE, sp. nov. Marginal vein long T. iNFUscATlrtcs Ashm. Legs yellow or brownish-yellow. Marginal vein j[ thu h-ngth of the stigmal; head about 3^ tinie^ as long as wide T. mKli>t'.s, Riley 4. Scajie wholly pale 5 Scape not wholly jiale, pale beneath or at base or apex. Coxio black or piceons. Wings with a dusky submarginal blotch T. maculii'KNNI.s, sp. nov. Wings with no submarginal blotch, hyaline or subhyaline. Funicle joints 2 and 3 not longer than thick. Coxai black. Legs dark brown or fuscous, trochanters, knees and tarsi, pale yellow. Second abdominal segment 1^ times as long as wide T. 8PHINGIS Ashni. Second abdominal segment not or scarcely longer than wide. Head very wide. Funicle Joints 2 and Ssubeiiual T. rileyi How. Fnnido joints 2 aud 3 equal ,...T. gossypiicola, sp. nov. Coxa? pale. Legs brown, the trochanters, knees, tips of tibai and tarsi, whitish or pale. Pedicel longer aud stouter than the first fuuiclar joint, the second very little longer than thick, the third small, transverse. T. GEOMETRJJ, sp. noV. 5. Pedicel scarcely hmger than the first funiclar joint. Second abdominal segment not striate at base. Legs rufous or reddish-yellow, the femora and tibiie often obfuscated. T. AKZAM^ Riley. Legs brownish- yellow T. LAVEKNJi, sp. nov. Pedicel much longer than the first funiclar joint. Closely minutely punctate. Second abdominal segment striate at base. • '< Legs, including coxjb, honey-yellow T. podisi, sp. nov. Coarsely crftirate punctate. Mesoplcura tinged with rufous. Legs and antenna;, except club, browuish-yellow. -err - T. PENN8YLVANICU8, sp. nOV. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPIDiE. 145 MALKS. Antonnm not, or scarcply, longer than tho body 2 Anteniiii' nimh longer than the body. Lvjjs pah) hrownish-yelh)w; jointH of flaKoUum oval.. .T. nouCHOCERrs Anhm. 2. Fliijiollar joints 1 ami 2 equal, or nearly e, pale brownish-yellow T, NOCTURE Flagellar joints 1 and 2 equal, the joints beyond oval. Coxa? black ; legs reddish- yellow T, GNOPH^LiE T. dolichocerus Ashm. Teleas dolichocerus Ashm., Ent. Am., iii, p, 100, $ ; Cress. Syn, Hym., p. 313. 5 . Length, 0.8""". Black, shining ; the thorax microscoj)ically punc- tate and pubescent; antennae black, the scape beneath brownish-yel- low; legs yellow. Antennae 12-jointed, very long, filiform, much longer than the body, pubescent; the pedicel is hardly half the length of the first funiclar joint; the latter is stouter than the pedicel or any of the following joints, about twice as long as thick ; the second funiclar joint is greatly elongated, longer than the pedicel and the first joint united; 21899— No. 45 10 146 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. the -T following- joints snbequal; those beyond, to the last, elliptic, oval; the last fusiform, as long as the third; all the joints from the third briefly pedicellated. Wings hyaline, with long cilia; the venation i)ale brown, the marginal vein half the length of the shaft of the stiguial, the latter ending in a knob. Habitat. — Jacksonville, Fla. Type, S in Coll. Ash mead. Described from a single specimen. The greatly elongated antenna} and the shape of the joints render the s])ecies easy of recognition. Telenomus Hubbardi, sp. iiuv. 9 . Length, 1""". Black, smooth, shining ; head quadrate, not wider than the thorax; mandibles i)iceous. AntennjB 11 -jointed, the scape reddish-yellow, the flagellum dark brown ; the pedicel is much longer than the first funiclar joint; the second, third, and fourth funiclar joints nearly equal, the second being very slightly the longest; the club is stout, the joints broadly transverse. Thorax subconvex, much longer than wide. Legs, including coxa?, uniformly reddish-yellow. Abdomen as long as the head and thorax together, the apex subtrun- cate, highly polished; the first segment transverse, with some coarse stria; at base; the second segment long, twice as long as wide; the fol- lowing segments very short, equal, but all distinctly visible. Wings hyaline, fringed, the venation yellowish, the marginal vein punctiform. Habitat. — Centerville, Fla. Type in National Museum. Described from a single specimen received from Mr. H. G. Hubbard, reared September 4, 1880, from the eggs of a Iteduviid. Telenomus pusillus, Hp. no v. 9. Length, 0.0""". Black, shining; heaallid legs distinguish it from T. Hubbardi with, which it agrees in the shape of the head and the abdomen. MONOGRAPH OF THE NORTH AMERICAN PROCTOTEYPID^. 147 Telenomus Koebelei, sp. nov. 9 . Length, 1'""'. Bla<;k, shining, the thorax finely punctate, devoid of pubescence, scutellum smooth, polished. Head transverse-quadrate, as wide as the thorax, the face rather tiat, smooth. Eyes with a fine pubescence. Mandibles black. Antennje 11-jointed, rather short, black, the pedicel longer than the first funiclar joint, the second sub- equal with the first, the third much shorter than the second; the club is gradually fusiform from the fourth funiclar joint, the first and 8e(!ond joints transverse-quadrate, the third quadrate, the fourth slightly smaller than the third quadrate, the last cone-shaped. Legs black; trochanters, a small spot on knees, and the tarsi, dull honey- yellow. Abdomen a little longer than the thorax, smooth, shining, the first segment, and the second at base, striated ; the second segment is at least 1 J times longer than wide; all the following segments are exceedingly short, but distinct, in this respect differing from the typical forms in the genus. Wings hyaline, with a short fringe; the venation yellowish, the marginal vein half the length of the stigmal. Habitat. — Alameda, Cal. Types in National Museum. Described from three si)ecimen8 reared by Mr. A. Koebele from an egg of some large unknown bombycid, probably an Attacus. Telenomus nigriscapus, Hp. uov. S 9 . Length, O.S"'"'. Black, shining, the thorax with a fine white pubescence. Head very broad, the face polished. Mandibles black. Antennie in 9 11-jointed, the scape black, the flagellum brown-black, tip of pedicel yellowish; the pedicel is not.longer than the first funiclar joint; the second, third, and fourth funiclar joints are about equal, moniliform, the first four joints of club transverse-quadrate. Thorax convex. Legs black, the trochanters, anterior tibirp, and all knees and tarsi, honey-yellow, the middle and hind tibite piceous. Abdomen fully as long as the thorax, truncate at tip, polished, the second seg- ment about one-fourth longer than wide. Wings hyaline, fringed, the venation pale yellow ish ; the marginal vein is at least one-third the length of the stigmal. In the 6 the legs, including the coxje, are uniformly reddish-yellow; antenuiie 12 jointed, pale brown, the scape i)aler; the pedicel is distinctly smaller than the first funiclar joint, the second and third a little longer and stouter than the first, the joints beyond to the last round-monili- form, the last conic, twice as long as the penultimate. _ _L'L Habitat. — Agricultural College P. O., Mich. Types in National Museum. Described from 1 S and 1 9 received from Prof. A. J. Cook. 148 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. TelenomuB utahensis, sp. nov. (5 9. Length, 0.8'""\ Black, shining; the thorax microscopically punctate, covered witli a fine pubescence ; the head very little more than thrice as wide as long, finely shagreened ; anteiune black, the pedicel at tip tinged with yellow; legs black, trochanters, knees, an- terior tibije, except sometimes a blot(;h above, and the tarsi, honey- yellow. Antennae in $ ll-joiiited, the first funiclar joint longer than the pedicel, the second half the length of the first, the third and fourth short, transverse ; the fourth the broader, nearly as wide as the club ; the club joints quadrate, the first the largest and a little the broadest, last joint conic. Wings subhyaline, pubescent, iridescent, with short cilia, the nervures brown, the marginal about one-third the length of the stigmal. Abdomen broadly oval, truncate at apex, the petiole striate, the second segment one-half broader than long. In the (J the antenna; are 12-jointed, filiform, the first funiclar joint about twice as long as the pedicel, the second and third funiclar joints a little shorter than the first, subequal; the joints beyond, to the ninth, moniliform; the ninth, a little longer than thick, and two-thirds the length of the last joint, which is pointed, conic. Habitat. — Wasatch and Salt Lake, Utah. Types, S and $ , in Coll. Ashmead. Described from specimens received from Mr. E. A. Schwarz ; collected June 13 and 27, 1891. Telenomus noctuae, sp. uov. i 9 . Length, 0.6""". Black, polished, pubescent, the thorax highly convex, microscopically punctate; antenme in $ brown-black, in ^ yel- low; legs yellow to brownish-yellow, the femor.a and tibife in the 9 dusky. Head about thrice as wide as long antero-posteriorly. Eyes pubescent. Antenna; 9 11 -jointed, less than twice as long as the scape; the pedicel is stouter, and nearly twice as long as the first funi- clar joint, the latter only a little longer than thick, the second monili- form, the third and fourth equal, transvt ..se-moniliform; the club rather stout, the first joint transverse, twice as wide as long, the second, third, and fourth joints about equal, transverse-quadrate, a little broader than long, the last conic. Wings hyaline, ciliated, the ner- vures brownish-yellow, the marginal vein punctiform, about twice as long as thick. Abdomen not quite as long as the thorax, truncate be- hind, the second segment wider than long. . -^ In the S the antennre nre 12 jointed, filiform-moniliform, yellow, the joints loosely articulated, with short bristly hairs; the pedicel is smaller than the first funiclar joint; the first three funiclar joints are elongate, the second being a little the largest, the third the smallest, the follow- MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 149 iug joints to the last mouiliform, briedy ])edicellate, the hist cone- shaped, as hmg as the first; legs yellow. Habitat. — Washington, D. C. TjT)es in Coll. Ashmead. Described from many specimens reared in June from the eggs of an unknown Noctuid moth. Telenomus gnophselae, sp. nov. S $ . Length, O.S'""'. Black, shining, the thorax microscopically punctate. Head transverse, wider than the thorax, the face ijolished, impunctured, the vertex iaintly shagreened. Eyes slightly bristly. Mandibles rufous. AntennsB "? 11-jointed, black, the pedicel much longer than the first funiclar joint, the second funiclar joint very slightly shorter than the first, the third not more than half the length of the second, the club much more slender than usual. Legs black; trochanters, knees, base and apex of tibijp, and the tarsi, honey-yellow. Abdomen shorter than the thorax, broadly truncate behind, the first and second seg- ments at base, striate, the second being broader than long. Wings hyaline, fringed, tho venation brown, the marginal vein half the 1« ;th of the stigmal. In the $ the antennae are 12-jointed, filiform, brown, the pedicel smaller than the first funiclar joint, the first and third funiclar joints about equal, the second very slightly longer than either of the others, the joints beyond to the last, moniliform, the last conic, twice as long as the penultimate; legs reddish-yellow, the coxa? dusky or black. Habitat. — Sisson, California. Types in National Museum. Described from many specimens reared August 24, 1890, by Mr. A. Koebele, from the eggs of Gnopha'la hopferi Grote. Teleuomus gracilicornis, sp. iinv. 9 . Length, 0.8"'"'. Head, scutellum, and abdomen polished black, shining; thorax microscopically punctate, suboj^aque, with a fine pubes- cence; scape black, the fiagellum brown black, the pedicel yellowish at tip; legs black; the trochanters, knees, anterior tibue, except a blotch above, and the tarsi, honey-yellow. Antennje 11-jointed, the club rather slender; the fiagellum twii-e as long as the scape; the first funiclar joint is about two-thirds the length of the pedicel, the second a little shorter than the first but still a little hmger than thick ; the third and fourth moniliform, about etpial in size; the first joint of club is sub- moniliform, transverse, a little larger than the last funiclar joint, the sec- ond, transverse-quadrate, the third and fourth quadrate, slightly longer than the second, the last pointed, conic. Wings subfuscous, the venation brown, the marginal vein punctiform, hardly twice as long as thick. Abdomen not longer than the thorax, truncate at apex, spatu- 150 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. late, not striate basally, the secoud segment scarcely longer tliau wide at apex. Habitat. — Ottawa, Canada. Type, 9 , in Coll. Ashmead. Described from a single specimen. Teleuomus califomicus, sp. nov. 9 . Length, CS"""". Black, shining, the thorax microscopically punc- tate and covered with a fine pubescence. Head transverse, as wide as the thorax, the face smooth, polished. Eyes pubescent. Mandibles black. Antenna? 11-jointed, black, the pedicel distinctly longer than the first funiclar joint, the first three funiclar joints subequal, all longer than thick, the fourth moniliform, the first joint of the club small, trans- verse, the second, third, and fourth nearly equal, transverse-quadrate, the last short, cone-shaped. Legs black, the trochanters, knees, ex- treme tips of the tibiiii and the tarsi, honey-yellow. Abdomen very slightly longer than the thorax, polished, the first segment striated, the second about as long as wide. Wings hyaline, fringed, the vena- tion pale brownish-yellow, the marginal vein one-third the length of the stigmal. Habitat. — Los Angeles, Cal. Types in National Museum. Described from 4 9 specimens, reared by Mr. D. W. Coquillett from the eggs of an unknown Orgyia. Telenomus persimilis, sp. nov. 9. Length, 1.5""". Black, shining, the thorax distinctly punctulate, subopaque, pubescent; the head 2^ times as wide as long, polished, the vertex toward the eyes alutaceous ; legs rufous, the coxae black. An- tc:>n{e 11-jointed, black, the pedicel shorter than the first funiclar joint, its apical margin yellow, the second funiclar joint is two-thirds the length of the first, the third and fourth shorter than the second, sub- equal, the fourth being rounded; the club is rather slender, the first joint transverse and shorter than the following, the second, third, and fourth equal, quadrate, the last conic. Wings hyaline, fringed, the venation pale brown, the marginal vein one-third the length of the shaft of the stigmal. Abdomen oval-subtruncate at apex, a little longer than the thorax, smooth, polished, the first segment wider than long, striate, the second not longer than its width at apex, the following short, the third being twice as long as the fourth; the suture between the first and second segments is striated. Habitat. — Arhngton, Va. __ Type in Coll. Ashmead. Described from a single specimen. Since this was written I have seen specimens of this species reared from unknown hemipterous eggs in Michigan. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^E. 151 Telenomus giaptse How. Scudd. But. New Enj,'., p. 1896. S9. Length, 0.0"'"'. Black, shining. IlesKl transverse, wider than the thorax, the face polished, the vertex snboparine. Eyes slightly- bristly. Mandibles piceous-black. Antennie in 9 11-jointed, black, very gradually clavate, the club less distinctly defined than usual; the pedicel a little longer and stouter than the first funicular joint, the second and third funiclar Joints nionilifonn, the second very slightly hmger than the third, the latter a little transverse; first and second joints of club transverse, the third and fourth quadrate, the last conic. Legs piceons- brown, almost black, the trochanters, knees, tips of tibia*, and tarsi, pale. Abdomen a little shorter than the thorax, truncate posteriorly, the first segment transverse, finely striated, the second wider than long, smooth and polished, the suture between it and the first with some stria;. Wings hyaline, fringed, the venation yellowish, the marginal vein one-third the length of the shaft of the stigma. In the S the antennje are 12-joiuted, filiform, the scape black, the flagellum brown; the pedicel is shorter than the first funiclar joint, the second and third funiclar joints about equal, and longer than the first, the joints beyond to the last, round nioniliform, slightly pedicellate, the last conic, twice as long as the penultimate. Legs brown, the anterior tibia", trochanters, base and apex of the tibiie, and the tarsi, honey- yellow. Habitat. — District of Columbia. Types in National Museum. Redescribed from many specimens reared by Dr. Riley, September 16, 1886, from the eggs of Grapta interrogationis Fabr. Telenomus spilosomatis, sp. iiov. i 9 . Length, 0.6"'"'. Polished black, impunctured, the thorax with a fine microscopic i)ubescence. Eyes bare. Mandibles black. An- tenniP 9 11-jointed, the scape black, the fiagellum dark brown; the pedi- cel is longer than the first funiclar joint; the second and third funiclar joints are equal, nioniliform; the first joint of the club is transverse, the second, third, and fourth about equal, quadrate, the last cone-shaped. Legs piceous-brown, the trochanters, knees, apices of tibia*, and the tarsi, pale brownish yellow. Abdomen not longer than the thorax, smooth and shining, the first segment transverse, the second wider than long, the terminal segments retracted within the second. Wings hyaline, fringed, the venation jiale y«'llowish, the marginal vein very slightly longer than half the length of the stigmal. In the (5 the antennse are 12 jointed, filiform, pale brown, the pedicel distinctly longer than the first funiclar joint, the second and third funi- clar joints about equal, longer than the first, the joints beyond round, 152 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. moiiiliform, the hist coue-sUaped, twice as loug as the penultimate; legs pale brownish yellow, the coxa^ black. Habitat. — District of Columbia. Types in National Museum. Described froui several specimens reared by Dr. Kiley, from the eggs of 8pilosoma virginica Fabr. Telenomus minimus, sp. nov. 5 . Length, O.G™"". Black, shining, pubescent, the dorsum of thorax flattened, the pedicel at apex and the two last funiclar joints, trochan- ters, knees, and tarsi, yellowish, restof thelegs pale brownish. The head is twice as wide as long, or very slightly wider, highly polished, face convex, eyes pubescent. Mandibles and throat brownish-yellow. An- tennae 11-jointed, the pedicel more than twice as long as the first funiclar joint, the latter not longer than thick, the three following joints exceed- ingly short, transverse, the last the smallest, the first joint of club short, crescent-shaped, the second semicircular, the third and fourth quadrate, the last ovate. Wings hyaline, pubescent, the venation pale brown, the marginal vein about half the length of the stigmal. Abdomen scarcely larger than the thorax, polished black, witliout stria? at base, the second segment not as long as wide, the third about one-third the length of the second, the following very short. Habitat. — Arlington, Va. Type in Coll. Ashmead. Telenomus heliothidis, sp. nov. $ . Length, 0.6'""'. Black, smooth, impunctured. Head large, much wider than the thorax. Eyes notpubescent. Antenna} 11 jointed, dark brown, the flagellum twice as loug as the scape, the pedicel stout and as long as the first and second funiclar joints together, the first funiclar joint scarcely longer than thick, the second, third and fourth about equal, not longer than thick, the fifth larger, moniliform, club 4-jointed, the seccmd and third joints quadrate, the last conic. Thorax very faintly pubescent, almost bare. Wings hyaline, with a long fringe. Legs dark brown, the tarsi pale. Abdomen not longer than the thorax, broadly truncate behind, the first segment exceedinJy short. Habitat. — Shreveport, La. Type in National Museum. Described from one 9 specimen, reared in January, 1891, by Mr. F. W« Mally, from the eggs of Heliothis armUjcra. Telenomus orgyiae Fitsh. TeJenowiua or^i/ifK Fitch, Eighth N. Y. Rep., p. 197. - — Teleaa orgyia' Ashiu., Ent. Am., iii, p. 100. S 9. Length, 0.8""". Black, shining; the thorax microscopically punctate, with a fine sericeous down ; the head a little more than 3 times MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPIDiE. 153 as wide as thick smtcio posteriorly, the face highly polished, the eyes pubescent; thorax highly convex; legs black or piceous-brown, the trochanters, knees, tips of tibiiB, and tarsi, pale or yellowish ; in male always pale. Antenn;t3 in 9 11-jointed, black; pedicel longer than the first funiclar joint, pale at ti^); second and third funiclar joints, moniliforni, the sec- ond slightly the larger, third very small ; in $ 12-jointed, filiform, hairy, brown; first three funiclar joints almost equal in length, about twice as long as the pedicel, the first the stoutest, the third a little curved; re- maining joints, exceiJt the last, moniliform, loosely joined, the last conic. Wings hyaline, fringed, the venation pale brown, the marginal vein about one-third as long as the stigmal. Abdomen oval, about as long as the thorax, bhick and highly polished, the first and second segments without striie. Habitat. — New York and Ottawa, Canada. Specimens in Coll. Ashmead. Described from several specimens, in both sexes, bred by Mr. W. H. Harrington from eggs Orgyia sp. at Ottawa. Telenomus ichthyurae, sp. i-.ov. ^ 9 . Length, 5.0'""'. Black, shining, impunctured, the thorax covered with a fine microscopic pubescence. Head very wide, wider than the widest part of the thorax, the face convex, polished. Mandi- bles piceous. Antennte -in 9 11-jointed, black, the flagellum one and a half times as long as the scape, the pedicel much longer than the first funiclar joint, the latter only a little longer than thick, the second and third joints equal, moniliform, the fourth still smaller, the joints 2, 3 and 1 of club, quadrate, the last short, conic. Thorax high, convex. Legs piceous-brown, coxai black, trochanters, knees, base, and apex of tibiai and the tarsi honey-yellow. Abdomen not as long as the 1|jorax, broadly truncate posteriorly, polished, the first segment trans- verse, thrice as wide as long, the second much wider than long and occupying most of the surface, the remaining segments scarcely visi- ble, more or less retracted within the second. Wings hyaline, fringed, the venation pale; the marginal vein is very short, punctiform, the stigmal oblique, nearly four times the length of marginal. In the $ the antennfe are filiform, 12-jointed, jiale brown, the pedicel slightly longer than the ffrst funiclar joint, the second and third stouter and longer than the first, about equal in length, the joints beyond to the last distinctly transverse, the last conic; the legs, except the black coxsv, are pale brownish-yellow. Habitat. — Washington, D. C. Types in National Museum. — ^ ^ — -— ,. — .^ __.... -__, Described from many specimens, in both sexes, reared by Dr, Kiley from the eggs of Ichthyura inclusa Hiiba. 154 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Telenomus infiiscatipes AhIiiu. Teleait infuacafipes AHhm., Eiit. Am., iii, \>. 100; 9 (? • i 9 . Length, 0.8""". Polisliod black ; the thorax finely pul)eH<'ent ; the head thrice as wide as long, the face very <'onvex; eyes bare; an- tennaf brown-black, the scai>e pale, at base; legs brown, the t!0X5B anase and apex; legs pale brown, or brownish-yellow, the coxje black, the fem- ora and tibite more or less embrowned. Head thrice as wide as long; the eyes pubescent, the mandibles piceous or brown. Antennae 9 11- Jointed, the pedicel longer and stouter than the first funiclar joint, yel- low at tip, the latter scarcely longer than thick, second and third joints not longer than thick, the fourth short, transverse, a little wider than the third, the club about as long as the funicle and pedicel united, the first joint transverse not so wide as the second, the second, third, and fourth, quadrate, the last conic. Wings hyaline, ciliated, the venation pale brownish or yellowish, the marginal vein a little longer thau half the length of the stigmal. Abdomen black, polished, not longer than the thorax, truncate at apex, the first segment and the suture betweeu the 156 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. iirst and second Ktriatc; the second Si'guient is halt' n^nhi an lung as wide. In the S the antenna' and lejjs are yellow, the coxa* black, or dusky, the i)edicel slijihtly shorter than the first funiclar joint, the first three fiiniclar joints ©(jual, one and a half times as long as thick, the following to the last, nioniliforni, subpedicellate. IIahitat. — Jacksonville, Fla. Types in Coll. Ashmead. Described from many specimens, reared from the eggs of Sphinx Carolina Linn. TelenomuB Rileyi How. Scmlder, IJutterflies New Eng., p. 1896. 9 . Length, C.G"""'. Black, shining, the thorax with a fine micro- scopic punctation and down. Head broadly transverse, slightly more than thrice as wide as long. Eyes sliglitly pubescent. Mandibles brown. Antennae 11-jointed, dark brown, the scape pale at extreme base; the pedicel is a little longer than the first funiclar joint; the sec- ond, third, and fourth funiclar joints numiliform; the first joint of the club transverse, the second, third, and fourth joints about equal, trans- verse-quadrate, the last cone-shaped. Legs dark brown or piceous, the trochanters, knees, and tarsi, honey-yellow. Abdomen very slightly longer than the thorax, smooth, p8cribe 9 specimens, reare, 1.S.S0, from lepidop- tenms eggs found on cotton. Telenomus geometree, hj). nov. (J 9. Length, 0.4.5 """. Iilalished; eyes slightly pubescent; mandibles brown; antennje ll-jointi'd, brown, the flag- ellum darker above than beneath ; the pedicel is scarcely longer than the first funicular joint, the funicular joints subequal, the first joint of club transverse, the second, third, and fourth about ecjual, trans- verse-quadrate, the last cone-shaped: legs rufous, or reddish-yellow, the trochanters and tarsi paler ; sometimes the femora and tibiie are more or less obfuscated: wings hyaline, fringed, the venation pale brownish, the marginal vein about half the length of the stigmal. Abde8 in ^National iMuseum. TelenomuB lavems. sp. nov. 9 . Length, (M)""". lilack, shining, the thoi-ax closely, microscopic- ally punctulate. Head thrice as wide as long. Eyes bare. Mandibles pieeous. Antenna' 11-jointed, brown, the scai)«' pale rufous, the ped- icel slightly longer than the first funiclar joint, the funiclar joints sub- equal, the joints of the club (ndy a little wi. nov., Riley. •' 2 . Lenjfth, 0.(»"''". Black, .shiniiiji-, the thorax alone exhibiting a faint microscopic punctation. Head transverse, about thrice as wide as long: ey«'S faintly bristly; mandibles brown; antennae 11-jointed, black, the pedicel much longer than the ftrst funicular joint, the second funicular joint subequal with the first, the third very short, moniliform ; the first joint of club transverse, small, the second, third, and fourth equal, quadrate, the last bluntly cone-shaped, scarcely longer than the preceding and narrower: legs dark brown, almost black, the tro- chanters, a small sjwt on knees, and the tarsi, pale: wings liyaline, fringed, the venation pale brown, the marginal vein about one-third the length of the stigmal. Abdomen longer than the thorax, pointed at apex, smooth and polished, the second segment longer than wide. "In the 3 of what I take to be this species, the aijtenna* are 12-jointed, filiform, brown, the pedicel not as long as the first funicular joint, the second and thiid about equal, very slightly longer than the first, the joints beyond ovoid-moniliform. The legs show nmch more yellow than in the 9 , the knees, broadly, base and apex of tibiae and tarsi, yellow. The first and second abd(miinal segments are striiited at base; while the second is almost twice as long as wide. "Described from one 9 reared by Albert Koebele from the eggs of a Clhiocampa sp. in California, and (me $ reare«l by C. F. Waters in Ne- braska, March 23, 1880, from the eggs of Clisiocanqm americuna Harris." [From Riley's M8.] Habitat. — Placer County, Cal., and Westerville, Nebr. Types in National Museum. ? Teleuomus pennsylvanicus, sp. nov. 9 . Length, 1.2""". lirown-black, opaque, coarsely cribrately punc- tate; the face with a deep inq>ressi<)n just above the antenna' and with a carina between the antenna\ Antenna' 12-jointed, brownish-yellow, the club fuscous; the pedicel is longer than the first funiclar joint, the second subequal with the first, joints ,3 and 4, scarcely longer than thick, the club o-jointed. Mesiqdeura cribrate punctate, with a rufous margin. Wings liyaline, pubescent, the marginal vein a little longer than half the h'ugtli of the stigmal. Abdomen broadly oval, sessile, the first segment transverse withlon- gitiulinal raised lines, the following segments coarsely shagreened. Habitat. — Pennsylvania. Type, 9 , in Berlin Museum. Described from a single specimen labeled " Penn. Zimmermann." This species is at once distinguished from all others by the (Tibrate punctuation, and it nniy ultimately form the type of a new fenus. My recollection of it is that it closely resemble. 403. ^ . Long. 10 pee. T)'un iioir hiillant cu dessiis. Ic siapt^ iles uiiti-niH^s. la ]»()itrine, les pattes ave<' la ba.se «le ralxlomeu (Viin Jaum^ pins on iiioins nmx. Ailes uvec riiiiiin^riis so confondaut avtic la iicrvure costalc, ulna olargie, ayaut I'appan-nce d'lm Hccond Htigma ; cellule radiale rienre de I'aile plus «»u inoitiH ()l>8(Mircie de roiissatre. Abdomen assez court, fla' forme, subsessile. Cap Rouge. irnknowxi to me. The spted with it by an oblique grooved Ihie. Eyes large, subovate. Antenuje inserted close to the moutii, in 9 ll-jointed, davate, the funiele .S-jointed, the club (J-jointed. in i 12-jointed, filiform, with the flagellar joints moniliform or submoniliform, pubescent. Maxillary palpi 3-jointed. Mandibles bifid. Thorax short, ovoid, convex, the collar not visible from above, the mesonotum with 3 furrows abbreviate*! anteriorly, the scutellum semi- circular, the metathorax very short. Front wings pubescent, the marginal vein usually sluut, the stigmal vein rather long, oblique; postmarginal long. Abdomen broadly oval, depressed, subsessile, the second segment tbe longest, but always broader than long. Legs as in Telenomus. This genus is closely allied to Telenomus, but is leadly distinguisiied by the three abbreviated mesonotal grooves, broader head, and the wide second abdominal segment. It seems to be i)arasitic only on the eggs of plant bugs belonging to tlie family Peutatouiidfv. Our species may be thus tabulate'o. io 11 162 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Firwt fiiuirliir joint shorter than the pe. nov. Legs and scajx' yellow, or pale ferruginous; cox.-e 1>la<'k. Pedicel longer than the first fiiniclar joint. Scutellum rugoso-punctate, suhopaque T. lii'FiscAiTs. sp. nov. Scutellum smooth, polished T. iskochy.mkn.k Ashin. TrissolcuB euschisti Aslmi. TftfHomiiM iimfliinluM Ashm., Hull. No. ;-$, Kans. Ex. Sta., .\i>j»..p. ii (1888). 9 , Length, l..")'"". Black, .sliiuiiig, very finely <*l().*edicel not longer than the first funiclar joint, the second and third funiclar joints transverse «iuadrate; the club large, pointed at tip, the joints transverse. Thorax with 3 abbreviated furrows j)08teriorly; scutellum smooth, polished, impunctured. Wings hyaline, finely pubes- cent; the venation fu.scous, the marginal vein about half the length of the shaft of the stigmal. Legs bhwk, trochanters, knees, tips of tibia* and tarsi, pale or yellowish. Abdomen broadly oval, about as large as the thorax, i»olishe. iiuv. $ 9 . Length, 1 to 1.4""". Black, rugose, the abdomen smooth, polished; first abdominal segment striate; trochanters, knees, distal ends »f tibia', and tarsi, dark honey-yellow; wings hyaline, the venation pale brownish, the marginal vein about as long as the stigmal. The female is the larger, with the face rugose or closely punctate; antennae ll-joint€»I, wholly black or brown-black, the pedicel a little longer than the first rtagellar joint; funidar joints 2, 3, and 4 transverse, the third the largest; club 5 jointed, slightly wuler than the last funiclar joi-t, the last joint minute; mandibles black. The male averages only 1'""' in length, with the face almost smooth or only faintly punctate; autennje 12 jointed, filiform-moniliform, the scape brownish yellow, fiagellum brown black, with all the joints, ex- cept the first and last, moniliforni; the last fusiform, twice as long as the penultimate; mandibles rufo pi<'eous. Habitat.— Baton Kouge, Ea. Types in National Museum. Described from several spe<'imens reared by Mr. IE A.Morgan, fr as the first and second funiclar Joints toji'ether. the second and third funiclar joints transverse: the club 5 jointed, not quite as long as the sca]»e. Thorax minutely, closely punctulate, slightly jmbescent, with three abbreviated furrows posteriorly: the scutellum rugoso punctate, slightly lustrous, pubescent. Wings subhyaline, pubescent, the nervures pale brown- ish, the nnirginal vein very short. Abdomen broa;ric., i\. ISSl, ]>. I'Xi: Eiit. Am., ill, p. 118; Cross. Syii. Hyiii.. ]>. iil4. 9 , Length, ().arated, the lateral close to the eye margin on an oblique grooved line extending from the eye to the occiput. The occiput concave, the upper edge sharp; cheek Hat. Eyes ]uibesceiit. Anteninv 11-jointed, the scape, pedicel, and lirst funiclar joint, brownish-yellow, the following joints brown-black; the scai)e does not extend above the front ocellus; the i)edicel is longer and thicker than the first funiclar joint, the latter about twice as long as thick, joints 2 and .'J transverse, the club large, (J-jointed, all the joints, except the last, transverse. Thorax iounde. iiii/riiofiiin Ashiii.) Head transverse or subipnidrate, not wider than the tlicn-ax, the occiput Hat but not concave or emarginate. Ocelli .?, in a triangh', tln' lateral a little away from the margin of tlie eye. Kyes ovate, jmbescent. MONOGKAPH OF THE NORTH AMERICAN PROCTOTRYPID.E. 105 AuteiiQiP. iiiserttMl r\oM' ti> the clyiKMis, in 9 11 Jointed, the Hagelhini very jjradually increasing; in thickness toward the tip, or subclavate; the pedicel is hirger than the first fnniclar joint, which is a little lonjj^er than thick, the second shorter, the third and following .joints, transverse, or wider than long. $ unknown. Tliorax ovoid, the niesonotuni scarcely longer than wide, subde- pressed, with 2 short impressed lines posteriorly, abbreviated ante- riorly, the scutellum flattened, the nietathorax short, ronnded behineii. nov. Hesid obloiij'. very tlat, attiiched ht tlici tlioiax lii^ifhnpou the occiput, tlie space Ix'tweeii the eyes very wide. 0er than the first fiajiellar Joint, the following joints shorter but stouter, subequal. Maxillary an«l labial palj)i very short, inconspicuous, 2-Joint«>d. Mandibles small, bifid. Thorax ovoid, very flat, the ]>rothorax not at all developed or visible from above; meson<»tum smooth, without furrows, rounded before; scutellum short, semicircular, with a very delicate cross-line before the tip; metathorax short, with delicate lateral keels. Front wings fringed as iu Cerocephala , the submarginal vein reach- ing the costa before attaining half the length of the wing, the nmrginal vein longer than the oblique stigmal vein, while the post-marginal vein is well developed. Abdomen very flat, ovate, with a short petiole, the secoml segment the largest, about twi the ProctotrypUhv. Aradophagus fasciatus, sp. uov. (I'l. Ml, FiK.!t,9.) $ 9 . Length, l.o""". Honey-yellow, sniooth, polished, impunctured. Scape, pedicel, and basal half of first funiclar joint i)ale or whitish, the rest of the antenuic, brown-black. Front wings fuscims, the base, a transverse band at the middle, an«l the apical margin white; hind wings hyaline. Abdominal sutures narrowly banded with fuscous. IlAiUTAT. — Jacksonville, Fla. Types in Xational Museum an«l coll. Ashmead. The two specimens in my collection were taken by myself in April, 1887, under live oak bark badly infested with BrachyrhynehuH fframdat us Say and PityoplithoruH querciperda Swz., the old egg masses of the Ara- did being s of small cxtt'iit, jii)piirciitly, and for the most part, com- prises species of the smallest size, the majority of which rarely attain one millimeter in lenjjfth. The habitus of the species more closely resembles the Teleiiomini, but the solid autenual club of the female, the ditt'ereuce iu venation of the winged forms, the marginal vein being punctiform, or short and stout, the stigmal vein short, thickened at base and terminating in a small rounded stigma, while the basal nervure is usually present, and the third abdominal segment, not the second, being the largest, readily distinguish them. These difterences ~*nd the position of the lateral ocelli will also separate them at once from the other tribes. The tribe Jiwini, as at present defined, will contain five genera : Thoron Hal., AcoJuH riirst., Acoloiden How., CemtobmiH Ashm., and Bam Hal., the parasitism of three of which is known. Species in the genera AcoIuh, Acoloidcs, and Jiau-s have been reared in America from spider eggs; and I should not be in the least sur[)rised to learn, from future observations, that the whole group contine their attacks to Arachnid eggs. The genera may be di8tingnisheu>ii>ES Howard. THORON Halidty. Eut. Mag., I, p. 271 (183:^); Fiirst. Hym. Stud., ii. p. 100 (1856). {Tyi>e T. fornicatun Nees. = T. nutallicnH Hal.) Head rather large, transverse, the oceiput and cheeks margined; ocelli 3, triangularly arranged, and wider apart than in Prosacantha; eyes large, oval. Anteunjp inserted close to theclypens, 12-jointed in both sexes; in 9 clavate, the club solid, although shoeing traces of sutures; in $ long, filiform, the pedicel small, oval, the flagellar joints nearly equal, about 4 times as long as thick, pubescent. Maxillary palpi 4-jointed; labial palpi 2-jointed. Mandibles tridentate. Thorax ovoid, the prothorax visible from above as an arcuate line, depressed anteriorly; mesonotum with li impressed lines; metathorax very ;ihort, rounded at the sides. Front wings with the submarginal vein joining the costa behind the middle; the marginal vein very sliort, thickened; i)Ostmarginal vein not, or scarcely, developed ; the stigma' vein longer than marginal, thick- ened at base, and terminating in a little knob. Abdomen oval or oblong-oval, strongly narrowed at base, the flrst segment longer than wide, the third the longest. Legs long, slender, pilose, the femora clavate, the; tibiie subclavate, with spurs 1, 1, 1; the tarsi ^ery long and slender. Thoroii pallipes Aslim. (PI. XVI, Fig. H, 9.) Ent. Am..in,p. 99. 9. Length, 2""". Black, polished; hejid subquadrate, smooth, the face convex; mandibles bluntly 3-dentate at ti]»s, pale rufous. Meso- notum sparsely punctate, with 2 farrows posteriorly; metathorax and pleura rugose. Antennae 12'jointed, dark brown, the scape and pedi- cel brownish-yellow. Leg^s, including coxte, pale or yellowish. Abdo- men oblong-oval, a little longer than the head and thorax together, attached high up on the metathorax, the first segment i)etioliform, MONOOUAPU or THE NOKTll AMERICAN PliOCTOTKYI'ID.E. IfiO Kfartely .'»s lon^' as tlie srcoml, a little lmmi>cd hasally; tiist and sec- ond sej^iiu'iits striated; rest of the ubdoiiieQ smooth, polished, sparsely hairy tx)ward the ai>ex. Wiugs hyaline, the venation brown, the mar- j>inal vein very short, thick, the sti{?inal vein short, stont at base. IlAiJiTAT. — .Jacksonville, Fla. Type in Coll. Ashniead. This is the only true Thoron in our fauna, the species desciibe«l as such, Thonm opucus How., Ins. liit'e. Vol. ii, p. -6.S, supposed to have been r«*ared from the Fluted Scale, hrtya piirchasi, being a S Teleno- mid an}t (1890). (Typi- A. siiitidis How.) Head transverse, wide, the frons (ionvex; ocelli 3, triangularly ar- ranged, but widely separated, the lat<'ral being close to the margin of the eye; eyes huge, oval, hairy. Antenna^ inserted just above the clypeus; in 9 apparently but 7- jointed, the chib being huge and inartiunctiform, the i>ostmarginal not, or scarcely, developed, the stigmal vein long, oblique, thickened at base. Abdomen short, oval, the first and second segments short, usually striated, the first much narrower than the metathorax or subi)etiolate, the third very large, occupying half, or a little more than half, the whole surface. Legs moderate, the tibial spurs very weak, scarcely developed, the tarsi 5-jointed, slender, the basal joint of posterior tarsi twice the length of the second. This genus maybe identical with jicolim Forster, as sjjecies occur in it with and without wings, the apterous species fitting exactly into the brief diagnosis of tlie genus by Fiirster; but as Forster's type Aeolus picetventris, so far as I know, was never described, and as I have discovered another wingless form closely allied to Acoloides, which is evidently quite distinct, that will also fit into Fiirster's brief descrip- tion, I have here, in my perj^lexity, made the latter the type of Fors- ter's genus, so as to enable me to retain the well-characterized How- ardian genus. Kircliner's description of Aeolus hdena, which might assist me, I have not been able to see. 170 miLLICTIN 45, UNITKl) STATES NATIONAL MUSEUM. Till' diflereiu;*' bi'twrt'ii tiie two jicneia, as hew ini(k'i'.st<). nov. Acoloides saitidis How. Iu8. Life, II. p. 270, tig. 58; loc. cit., p. 359. "9. Length, 1.4'"'"; expanse, 3.(>'"'"; greatest width of fore wing, 0.40'"'". Antenme short; pedicel long, nearly one-half the length of scape; joint 1 of funicle one-half as long as pedicel; joints 2, 3, and 4 very short ; club very large, oval, and one-third longer than four preced- ing joints together; no articulations can be distingui.shed, but it is liomo- logically composed of six joints. Eyes hairy; lateral ocelli touching the eye margin. Head, face, and mesonotum densely and finely punc- tate; i^arapsidal furrows not present; first and second abdominal seg- ments with fine, close, longitudinal striai, wanting at smooth jmsterior border; the very large third segment and short fourth, densely and finely punctate, and clothed irregularly with short, whitish i>ile, which is also present, although sparser, upon the mesonotum, and is quite thick im the vertex; mesopleura finely punctate below; metapleura smooth. The marginal vein is very short, and not quite coincident with costa; the post marginal is extremely short; the stigmal is long and slender, and terminated by a small rounded knob. General color MONOGIUPH OF THE NORTH AMERICAN PROCTOTKYPID.E. 171 deepbliutk; all le^^s and antennae hoiH-y-yellow; all coxa* black, litter at tips; scape brownish and pedicel darker than club. " ,5 . Differs from female only in antenna;, which are plaiidy 12- jointed; joint 1 of funicle sis lonj; as pedicel, Joints 2 to 7 subequal in lenjith and width, and each as broad as long, and well separated; club oval, nearly as long as three preceding joints together. Antenuiu uni fonnly honey-yellow." (Hoirard.) Habitat. — Lincoln, Nebr., and Oxford, Ind. Types, 1> (? and 1 9 in National Museum. The types of this species, as recordetl by Mr. Howard, were reared by Mr. L. Bruner, at Lincoln, Nebr., from the eggs of the Araneid 8((iH« pulex. "The eggs of this spider are a little more than a milli- meter in circumference, and eaph egg harbors but one parasite, whudi issues by splitting the eggs open rather than by gnawing a regular hole." The same species was also bred by Mr. F. M. Webster, at Ox- ford, Ind., from a sjjider egg-sac found under the bark of a log, in October, 1884. Acoloides Howardii, sp. nnv. 9 . Length, 1'""'. Black, shining, with a microscopic white pile, and feebly microscopically punctate; petiole and legs, brownish-yellow, the coxa' black. Antenuji; 7-jointed, brown, the pedicel large, the tirst funiclar joint very little longer than thick, scarcely one-third the length of the pedicel, the three following joints transverse, the last the widest, club large, not jointed. Scutellum semicircular, subconvex. Meso- pleura with a long, femoral furrow, crenate at bottom. Metapleura divided into two parts by the spiracular furrow, the upper portion smooth, impunctate, the lower portion punctate. Wings subhyaline, the nervures brown, the stigmal vein long, thickened at base. Abdo- men broadly oval, shining, but micros<'opically punctate, and finely pubescent, the tirst segment twice wider than long, striated and yel- low; the second and following segments bla^k, the second with striai at base. Habitat. — Washington, D. C. Types in (^oU. Ashmead. Described from two specimens. This species is closely allied to A. saitidis How., but it is slightly smaller, and not so densely punctate, the scutellum shorter, subconvex, the petiole yellow, while the first tlagellar joint is scarcely one-third the length of the pedicel. Acoloides Emertonii How. Ins. Life, iv, p. 202. 9- Length, 1.4"""; expanse, 1..5""". Black, shining, bnt closely microscopically Xtimctulate ; antennae brown-hlack, the scape pale at extreme base; legs, including coxa*, brownish-yellow ; abdomen mostly yellow, the second segment, lateral and 172 Iiri.LKTIN 15, I'NITKI) STATKS NATIONAL Ml'-SErM. ii)iiriil iiiiir^'iiiN "f lliiid. ;iinl (lir I'ollowiny sf;;un'iith. tiiHi (iiiH or liliti'k. H»'ii(l very wide, im>rt' than lliitc tiiiii« as vviilf a« tliick aiitcrd-poHiorioily ; eyrs lar;;«\ riiiiii
  • (l, whitisli (after deatli) aiiiii«ally sculptured, but lustrous, the first and second seguieuta about equal iu It'Ugtli, atriutcU. ( Howard.) Habitat. — Massjwhusetts. * Type in National Museum. Desorib«'d IVoiii seven 9 specimens, feared by Mr, .1. II. Emerton, from a s])ider's eoeoon. Acoloides bicolor, sp. nov. 9 . Lenecies is much smaller than the others, the surface smoother, less distinctly i>unctate, and the abdomen more rotund; while the color of the eyes and abdomen, and the shortness and relative length of the joints of the antenme, render it easy of recognition. Acoloides melleus, sp. nov. 9 . Length, 1.4'"'". LTniformly honey-yellow, the eyes and ocelli brown, the wings subfuliginous. The head is very large and wide, the lower part of face being hmgitudinally striated. Antenna) short, 7- joiuted, the club large fusiform, inarticulated ; the first funiclar joint is twice as long as thick and fully half as long as the pedicel; the second and third are as long as wide; the fourth, transverse. Abdomen oval, the first segment and the second, at the suture, striated, the following segments feebly, microscopically punctate. Habitat. — Arlington, Va. . . , „i , p I Tjiie in Coll. Ashmead. MOXOGRAPII OF THE NOKTIf AMEIJICAN PKOfTOTHYIMI) V,. 173 I)t^s«'rilM'(l fnuii :i siii)r|r sp<'riin4>n. In color, si/,«', width of he.ul, iion-iMibt'sccnt ryes, hihI tin' relative kMi;;tli of tlu^ iiiitcnnal joints, tliis species is very distinct from any other spei'ies in our fauna. Acoloides subapterus, s|>. nov. 9. Lenjith. 0..S""". Mead and thorav bhiek, minutely |MinetuUite; abionu'u fusj-ous or dark brown, the petiole yellow; antenna- an«l leji's brownish-yellow, the elub fuscous. Antenme 7-jointed; the clul> larj^e, inartiedicel stout, very little more than twice as long as thick; tirst funiclar joint scarcely longer than thick; second and third, not longer than thick; fourth, transverse. Thorax with slight indications of grooves posteriorly. Metathoi:ax with subacute angles. Abd-is FJirst. MS.) Eesul largt", traiisver.se, the lioius very convex, the faee with an im- pression just above the antenna', tlu^ occiput concave, einarjjinated, and faintly niarjjfined; ocelli 3, very minute, the lateral close to the margin of the eye, hut scarcely discernible; eyes larjre, oval, bare, or hairy. Antenna' inserted just above the clyjH'us, in 9 T-joiiited, clavate, the club large, inarticulated, the pedicel stout, the lirst fiinielar joint a lit- tle longer than thick, the three following joints small; in 6 12-joiuted, tiliform, pilose. Maxillary palpi .'5-jointed; labial palpi (?) li- jointed. Mandibles bifid. ^^' rax subovoid, not wider than long, and narrower than the hea0, ISIU. MON0G14AP1I OF THE NORTH AMKHICAN PKOCTOTiiYFID.E. 175 AcoluB Zabriskiei, sp. nov. (IM. xv.Fig.T. ,?.) i. Leiijftb, 1""". Black, polished, fluely seiicoous; iiuindibles red- dish; scjiiK! honey-yellow ; tlagelluni pale brown ; legs, including: coxse, reddish-yeUow. Head very large and broad, a little more than three times as wide as thick antero-posteriorly, anwn spider. CERATOBiEUS Asliin.. j^eu. uuv. (Typt' ('. GDi-HtidiH Ashni.) Head very large and broad, nuich broader than the thorax, tlie oc- ciput margined; ocelli ."> in a triangle, wide apart, the lateral touching the eye; eyes br<>adly oval. Antenna' inserted at the base of the clypeus, in 9 sliort, clavate, 7-jointevate, depressed, subsessile, composed m[ 176 I5ULLETIN 4.-., UNITKI) STATES NATIONAL Ml'SEUM. (►or 7 visibh' teriiitcs. tlir tliird the liir;i<>st. tlic tirst, fiiniislM-d willi a lioni at base rxtnuliiij;' over tli«' nx'tathorax. Lejjs ;is ill ^[coIhs. Male unkn()\vn. Allied to Hans, Aa>lns, iiiid AvoUtidcs^ Imt readily separated by the projeetiii};' horn at the ba.se of the abdomen, as in linnjcouus^ Calotclcia, ete. The two spet'ies known to me may bf tliiis tabnlatiMl: TAIJLE OF Sl'KCIKS. \\'itif;lfss 2 lilack, liiiciv, cloHcly inuictulat*'; le^s iiixl ;iutoim;r, yellow. AIkIoiiu'h i>(tint»'d ovati', longer tlian the head and the thorax together I'. COKXUTi'S. 8p. IIOV. 2. Head and thorax blaek, tiiU5ly. closely jMinctnlate. Ahdoineii. legs, and .inteuiia- hright yellow, the tbrnier with two fuscous s|>ot8 toward liase C BixoTAirs. sj». nov. CeratobaeuB cornutus 8|i. iio\ . (I'l. Mil, Fig. S. 9 .) 9. lien^th, 1.5""". IJlack. tinely, <'l<)sely ])nn<*tnlate; tin' head with sunetiilate. Antenna- 7-Jointed, the elnb inarticn- late; the tirst fnnielar joint is half the length of the pedicel, or twico as long as thick; the three following, transverse. The thorax exhibits two very short grooved lines posteriorly, just in front of the scutellum, that are evidently the Ixigi'ining of the parai)sidal furrows. Meso- l>leura with a crenulate femoral furrow. Metaj)leura jiunctate, di- vided into two parts bj^ a fovea and a groovi'd line. Wings subhyaline, the uiTvures lirown; the marginal vein is abotit half the length of the stigmal. Abdomen i)ointed-ovate, rt»notum not visible from above, the scutollum in 9 notdifierontiatod, while the metathorax is extremely short; in the S the scutcillum is distinct, semicircular, subconvex. Wings in the i with a distinct basal nervure, a short nnirginal, a long knobbed stigmal nervure and no post marginal; the ? always apterous. Abdomen in 9 oval, sessile, convex alK>ve, fiat beneath, the third segment occupying nearly the whoh' surface, the first and second seg- ments being visible oidy as transverse lines or wrinkles; in i smaller, rounded and more fiattened, the first and second segments very short, transverse, the third the largest segment. Legs rather long, the femora clavate, the tibial spurs weak, the tarsi 5-iointed, the hind tarsi not longer than thei- femora, the basal joint being one-third longer than the second. The absence of a scut*!llum readily distinguishes the females of this (jenus. The male was unknown to llaliday and Forster and is here 21899— ifo. 45 12 178 BULLETIN 15, UNITED STATES NATIONAL MUSEUM. (Icsciibetl for tlu' first time. A single S specimen (toj^ether with sevenil females) was reaied from si>i(ler eggs in an orange-colored eocooti by Mr. J. H. P^mertou, in 1871, and is now in the Department of Agricul- ture. This single specimen has enabled me to i)erfect the diagnosis of the genus. It bears a close resemblance to the male in the genus Acohndes, but differs in having subclavate antenuic, a little longer marginal vein, longer stigraal vein, and a distinct basal nervure. The habits of the genus were unknown to the European authorities, and we are indebted to an American, Mr. L. (). Howard, for first making us acquaintecopic sericeous pubesceni'c; antennae and legs fus- cous, or dark 1> >wn, the tarsi paler. Antenn.e T-.joiuted, very .short, the club largi^, l)ointed-ovate; pedic<'l large, pale at tip; first funidar Joint scarcely longer than thick; the remaining joints of funiele very minute, transverse. Abdomen broadly oval, convex, shining, impunc- tatc, wider than the head and as long as the heatl and thorax united. Habitat. — Ottawa, Canada. Types in Coll. Ashmead. Described from 2 9 specimens received from W. Hague Harrington. * Baeus niger, hj>. nov. 9 . Length, 0.7""". Black, shining, with a fine sericeous pubes- cence; head impunctate; eyes very large, nearly round, occui)ying the whole sitle of the head, i)ubescent; thorax not longer than the length of the head, microscopically punctate. Antenna' very short, the scape and funiele pale rufous or brownish-yellow, the club large, black. JiCgs bro\vuisU yellow, the tibite with u sli^fht dusky streak ut tUe middle, MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID.I':, 1 70 Abdomen long-oval, twice as lonj,' as the head and thorax toj^'ether, the widest part as bro{»d as the head. Habitat.— Washinjjton, 1). C. Type in National Museum. Described from a single specimen, taken September 21, 18S4. Baeus piceus, Hp. nov. 9 . Length 0.6""". Brownish-piceous, smooth, shining, impunctnred; antenn.T and legs brownish-yellow, the scape and pedicel above fuscous, pale at tips ; the three last fuuicle joints very minute transverse, the ttrst not longer than thick, less than one-third the length of the pedicel. Abdomen oval, convex, polished and shining, a little longer than the heav4 and thorax together. Habitat. — Ottawa, Canada. Type in Coll. Ashmead. Described from a single si)ocimen received from W. llagui^ Har- rington. Baeus clavatus Pruv, Trichaniiin vJavatitH Piov., Add. et Corr., p. 2W. lid'im claratits Haigtn., Ins. Life, ii, p. 359. 9. Lcnj^tli O.O.") inch. Of ii nniforni .eddish-ltrown, with the l«>jjs yellow. The clnb of the antenna' black. Thorax """. Length of antenna! clnb O.I>C)'""', or in other words the en- tire body is only 'i\ times as long as the antennal clnb. Width of antennal clnb 0.082'""'. General color dark honey-yellow; scai>e and fnnicle of antennae brownish, clnb lighter, dark at tip; vertex and face light honey-yellow; dorsnni of thorax and abdomen dark honey-yellow, almost ai>]>roaching mahogany; legs throughout con- colorons with the head; middle and hind tibije a little darker near b.isc. Surface of abdomen smooth, shiny; mesonotum very faintly punctate. Thorax and abdo- men with extreujely line, sparse, whitish pile; ti]) of abdomen with a short and con- tracted fringe of white pile. Antenn.al clnb very large, longer than rest of funicle and ]>edicel together; funicle Joints very narrow and abort, 8ubey Mr. Howard, was reared by Col. Nicholas Pike from spider eyj(s in an oranj;e cocoon belonging- to dw family Epcirida'. The male, here described, was reare«l by Mr. .1. H. Emerton, in 1871, together with several females, from an orange-colored spider's co.;oou. Tribe III. — Teleasini. Au extensive tribe with few genera, but numerous in species, distin- guished by the antenna; being inserted ch)se together on a clyi>eal prominence ; by the venation, the postmarginal vein never being devel- oped, the marginal vein always greatly lengthened, and the stigmal vein always minute, scarcely developed ; by the abdomen always beinf: distinctly carinated along the sides, with the third segment the long- est ; and by the Aveak tibial spurs. Under this tribe six genera are brouglit together, Tclea-s, Prosacan- tha, and allied genera. Except in a single instance, the rearing of Prosacantlia caraborum, by Dr. Kiley, from the eggs of a beetle, ('hlwniiis impunctifronii, noth- ing i^ositively is known of the parasitism of the group. It is possible they confine their attacks to Coleopterous eggs, although Prosacnntha hasalis Forster is recorded as having been reared from Dipterous lar- viv. Since this record is totally at variance with the habits of the whole subfamily SccJionituv, I question its accuracy, as I believe the .whole group are i.'l»'s Mtitl, the ivvAh «'<|iial. Metiiseutelliiiii with :i spiiio, or tiiln'iriilat*' IIorLocKYox Asliin., goii. iiov. Metascutelliiiii simple (Jryox lialiday. Apterous. MetiistMitelliim with a small s|)iiio or tubercle (Hopmkiryon). Metascntelluin without a spine, simple ((JRYON). MALKS. Abdomen broadly oval, the first segment wider than long 3 Abdomen long-oval, the first segment jietioliforni; the marginal vein very long. Mesonotum without furrows; ])ostscutelluiii s])iued '2 Mesonotimi with 2 distinct furrows; posterior augh's of metathorax usually spiued or toothed. Metascutellum with ;J spines; antenna' very long, liliform. pubescent. Tkissacantha Ashm. Metascntellum with l.s])iiie; antenna' with whorls of hair. XKNOMEItl^S Walk. 2. Antenna' long, tiliforni. the flagellar Joints at least four times as long as thick, the third Joint excised at base or angulated; i>osterior femora not swollen, the tibial spurs not develope. .51 (1888). (Type, r. ((DindvustK Ashm). Head transverse, the occiput straijrlit, not eniarj?inat<^, with a delicate margin extending on the clieeks, whicli are tiattened; ocelli ."5, in a tri- anjifle; eyes Ion j^' oval, hairy. Antenna' inserted at the base of the clypens, 12-jointed in both sexes, in the $ clavate, the club G-Jointed, the tirst tunidar joint twice as long as the pedicel. Maxillary palpi very short, 3-jointed. iSIandibles bidentate at apex, sinuate, and ^ith a lobe at base within. Thorax ovoid, the protliorax not visible from above; me.sonotuni wider than lor. g, the seapuLe not separated; scutelluni semicircular, rugose; postscutellum with 3 erect, conic teeth ; inetathorax very short, with prominent acute posterioi- angles thtit are connected with a carina. Front wings as in Prosacdntha. Abdomen oblong-oval, narrowed at base, attached to nietathorax far above the hind coxiv, and composed of six visible dorsal segments, the basal segment having a .short, smooth, blunt horn, partly prohmged over the metuthorax, the thij'd segmeni the longest. - :,^ 182 IHJLLETIN ir., IGNITED STATED NATIONAL MUSEUM. ' Lrj^s rii(,ln'r luii^', slciMlrr, pilose, the lihiii- rliivatc, tlieir spurs weak, the tarsi mucli longer than the tibia*, slendtT, the chiws simple. ('l«)sely allied to J'rosticdntlia, but readily distiiijiuished by the post- scutelliim beinji" armed with 'A spines, and the tiist abdominal sv^- ment bearinj;' a horn, as in CaUttcleut Westwood, in the trib*-! ticelionini. The male is unknown. Peiitacaiitha canadeiiBis Ashni. (PI. VIM, FiK. 1,9-) lof. cit. i>. 51. 9. Length,!*""". lUack; thorax and scutellnm coarsely sliagreened, oi)aque; the lieaenoe's col- lection, taken in lliley C(mnty, Kans. TRISSACANTHA Ashiii. Ent. Am., Ill, p. 101 (1S87). (Type, T. amrricatia Aslun.) Head transverse, the occiput almost strjiight, margined; ocelli 3, close together in a triangle; eyes oval. Antenna* inserted on a cly])eal prom'uence, lli-jointed, in S very long, filifornj, cylindrical, the scape extending to the ocelli, the i)earsely pilose, the first segment longer than wide, tinted, the third t\\v, largest; the tirst three segments are hnigitiidinally striated. Legs rather long, slender, i)ilose, the tibial spurs nn'nute, the tarsi slender but 8pinuh»se. This genus, known only in the male sex, is distinguished from Prom- cantha by the 3-spined postseutellum, and in having distinct meso- notal furrows ; from Xt-nomeniti, which also has mesonotal furrows, it is separated by the p(Kstscutellum and the filiform antenuie. It may be the opi)osite sex of Ptntacntithay agreeing witii it in its postscutellar character, but the mexonotnin hdx tiro distinct fiirnurs, and as 1 know of no genus in the Proctotrijpidw having the mesonotum grooved in one sex and plain in the opposite, 1 believe it to be dis- tinct. This character, used in the table of the males, is therefore repeated in the generic table of the females. ■ Only two spe(;ies are kuown to me, whiirh may be separate*] as follows: Bliiek; It-gs rufous, coxic black. Scutelhiiu smooth, jiolislit'd T. amkuicana AhIiiu. Scntelluiu rugose T. kuoosa, sp. uov. Trissacaiitha americana Asbni. (PI. viii. Fig. 2, c?.) Ent. Am., iii, p. 117; Cress. Syn. Hym., i>. 813. $. Length, 2.5""". INdished black, pubescent; head and occiput with some strite; mandibles i)iceous; legs rufous, the coxie black. Antemue IL'-Jointcd, filiform, black, longer than the body, the scape not much longer than the tirst flagellar joint, the pedicel annular, the flagellar joints all long, cylindrical, the first about five times as long as thick, the se<'ond shorter, the third angulated at the middle and slightly excised at base. Mesonotum with two distinct furrows; scu- tellum semicircular, smooth, poli.shed; po.stscutellum with three erect spiue.s, the middle the huigest. Abdomen longer than the head and thorax together, longitudinally striate*]. Wings fusco-hyaline, pu- bescent. Habitat. — Florida, District of Colund)ia and Virginia. Type in Coll. Ashmead; specimens in National Museum. This species was originally described from a speecimen, which is readily distingui.she*! from T. americatia by the rugo.sity of the vert«^x, collar, and scutelluin. XBNOMERUS W.ilk.r. Ent. MiVf,'., Ill, p. :>.".."> (1K^«). (Type A. <'»v/fHHrt Walk., stsentellnm, black and polisheil. Habitat. — Ailington, Va. Type in ('oil. Ashmead. Deseribed from a single speeimen. The insect des«Tibed by me, in the beginning of my studies on this family, under the name X. nihirola. is a 3 I'teromalid belonging to a genus unknown to me. PROSACANTHA N.es. Mou., II, 11. 294 (18ai); Forster. Ilyiii. Stiul., ir, \k \0:\ (isr.6). ( /'. loiifiiroriiiH Nt'cs. ) Head transverse, the occiput slightly emarginated and delicately margined; ocelli .S, in a triangle, rather close together, the lateral very distant from the margin of the eye; eyes oval, pubescent. Antenna; inserted on a clypeal prominence, 12-jointed, in 9 termina- ting in a long, fusiform, (J-.jointed club; the funiclar Joints thicker than the pedicel, the first two Joints longer than wide; in i long, filiform, the joints long, cylindrical, the third angulated or emarginated from near the middle towards the base. Ma^^iUary ]»ali)i .3 Jointed. Mandibles curved, bidentate at tips, the teeth in the left mandible equal, in the right with the outer tooth the longer. Tiiorax ovoi aunulatiHl wi(h white. First, set'oiid, and tiiinl funiilar joints wliite F. ANNrucoRNis, ap. nov. 2. Ant«'nnii' not wholly hi ck, tlic scape riilous or yellow 1 Antenna' with the scape i>ale only at hase-, ',i Anfenna- wholly hlaik. Legs wholly black. Thorax rngose, opaijnc, ' • Fae t lougitndinally striatM P. xigripks, sp. nov. Thorax tiuely pnuctate, shining. Face striate toward hase of antenna^ P. melanopis, sp. nov. Thorax smooth, shining at the most microscopically pnnctate. Face smooth, shining P. rKXNSYi.VAN'iCA, sj). nov. Legs not wholly black. Legs, except knees and tarsi, black or dark fnscons. Thorax rugoso-pnnctato: lower part of face striate. iScntellum rngose, o]»aqnc; wings abbreviated.. . .P. T'Tahensis, sp. nov. Scntellum smooth, polished P. californic*, sp. uov. Thorax closely striately pnnctate; scntellnm faintly pnuctate, opaqne. Face smooth, shining P. l.kvifkoxs, sp. uov. Thorax finely rngose, subopatjue; scntellnm shining, faintly punctate. Face shining but sparsely finely pnnctate P. N.\NA, sp. nov. 3. Coxje black; legs, nuless otherwise mentioned, pale infons. Thorax closely pnnctnlate. Face highly polished; tibia* and tarsi, tnscons P. caraborum, Riley. Thorax and scntellnm longitudinally rngnlose. Frons polished but with some scattered punctures. P. PUNCTIVEXTRIS, sp. UOV. Thorax and scntellnm tiuely riigoso-i)nnctate, opaque. Frons shining, feebly shagreeued. with some scattered jmuctures. P. scinvARZii, sp. nov. Thorax pcdished, sparsely punctate ; scntellnm polished. Frons polished; posterior tibia' fuscous above P. pusim.a, sp. nov. Thorax tiuely pnnctnlate; head and scntellnm smooth, shining; legs jtale brownish-yellow P. oracilicorni-s sp. i»ov. Coxfe and legs i)ale rufous or brownish-yellow. Thorax and scntellnm rugoso-i)nnctate. ■ ?, «' Frons smooth, sparsely ]>unctate P. marYLaxdica, sp. nov. Frons coai-sely longitudinally striate P. kijscipf,nnis, Ashm. Thorax and scntellnm shining, faintly punctate. Frons smooth, with some small, faint punctures P. columhiana, sp. uov. Thorax finely pnnctnlate with indications of furrows posteriorly; scntellnm smooth, shining. Frons highly |)olished, impunctate P. iulineata, sp. nov. Thorax and scntellnm finely rugose, opa»|ue; pleura rufous. Frons shining, sparsely, faintly punctate P. pi.euralis, sp. nov. 4. All coxa', except stmietimes the last pair, pale r» All coxa' black. Thorax and scntellnm coarsely longitudinally rngulo.se. First funidar Joint one-third shorter than the second; legs rufous; throe basal segments of abdomen striata; P. roxAi.is, sp. nov. MONOGRAPH OP THE NORTH AMERICAN PROCTOTRYPID.E. 187 Thorax fiiu'ly, i losely iiuuctate; the K(iit<'lliiui binuotli, jiolisbed. First auf abdomen yellow P. ki.avopetiolata, sjt. m)v. MALES. Antenna* not wholly black 2 Antennae wholly black. Legs wholly blaF/ri()LATA, Frons striated. Third abdominal segment finely acicnlated and pnnctate; petiide dull nifons P. MACRocEUA, Ashm, 4. First flagellar joint .shorter than the second. Thorax and scntellum closely pnnctate, shining. Lower part of the face striate; mandibles large, yellow. P. XANTHOGNATHA, Sp. nOV, Thorax rugose, opaipie or subopaiinc, pnbescent. Frons hnigitudinally striate; nnindibles and legs rufons, P, MARYLANDICA, sp. noV. First flagellar joint longer than the second, abdinuen longitudinally striate*!. P. srUlATlVENTKIS, sp. UUV. 188 BULLKTIN 4."., UNITEI) STATES NATIONAL MUSEUM. Prosacantha annuliconiis. isp. iiov. 9 . ^ellgth, 2 to 2.2""". Head and abdomen black, shining; tlio tho- rax dull rutims, punctate, the metatlioiax and nietajdeura stained with black. Head transverse, the vertex subacute, face smooth, with a few scattered iiunctures, the orbits longitudinally aciculated. An- tenn.TB 12 jointed, hmg; the scape long, rufous, extending one-third its length beyond the (►celli, its apex and the pedicel fuscous; the first three funiclar joints are long, subequal in length, yeHowish white; the fourth funiclar joint ami the club, black; the fourth funiclar joint is a little longer than thick and fidly as thick as the preceding joints. Scutellum roughly punctate; the i>o8t-scutellnm armed with an unusually long a<'ute spine. Metathorax with the angles acute. Wings fuscous, paler basally. Legs pale rufous, the cox.e and tro chanters yellowish, the tips of the femora and tibiae a little fuscous. Abdomen as long as the head and thorax t«>gether, polished, the petiole and the second segment longitudinally striated. Habitat. — Washingtcm, D. C. Types in National Museum, American Entomological Society, and Coll. Ashmead. Described from many specimens, taken in winter, by sifting. Prosacantha nigripes, sp. nov. $ 9. Length, 2 to 2.4"'". Black; tliorax and scutellum finely ru- gose, subopaque; head transverse, vertex ])unctate, the occiput trans- versely aciculated, the face longituecimens received from Mr. IL F. Wickhara. Prosacantha striatifrons, sp. nnv. S. Length, 2""". Black; head broadly transverse, shining, vertex smooth. Irons and fiic«' longitu«lrnally striated; mandibles long, falcate, pale rufous; thorax and scntelhim rugulose, opaijne; legs bi1)wnish- MONOGRAPH OF Till': NORTH AMERICAN PROCTOTRYPID.E. 189 yellow. Anteuuje 12-joiiited, tiliforin, black; first fimicle joiut (> times as lon^t as thick; second slightly shorter; third still shorter; fourth and following longer than third, but not (i[uite as long as the second. Post- scutellar si»ine long, acute. Angles of metatliorax acute. Wings sub- hyaline, the nervures ^ale brown. Abdomen broadly oval, black, shin- ing, the first and second segments and the third, on disk, longitudi- nally striated. Habitat. — Jacks«>Mville, Fla. Type in Coll. Ashmead. Describeedicel half the lenjith of the liist funiclar joint; '»ale at tip; second fjiniclar joint one-third shorter than the first, third and fourth minute, transverse; club as lonj? as the funicle, tlie joints transverse. AVinj»s abbreviated, not extendinj^ be- yond the base of second abdominal segment. Leys bla<;k, articula- tions of trochanters, knees, and the tarsi^ rufous. Abdomen a little longer than the head and thorax together, shining; the tirst and second seg- ments coarsely striated, the following segments shagreeued, or with a scaly puiu'tuation; venter evcept the tirst segment, feebly microscopic-, ally punctate. Habitat. — Park City, Utah. Type 9 iu Coll. Ashmead. Described from a single siiecimen collected by Mr. E. A. Schwarz. Prosacantha californica, »]>. iiox . 9. Length, l.S""", Black; thorax tinely rngoso-punctate, opaque; the s<*utellum smooth, shining; head smooth, shining, the orbits and lower part of the cheeks, striated. Mandibles piceous. Antennae Hi- jointed, black, the pedicel about half the length of the first funiclar joint, the second funiclar joint very slightly shorter than the first, the third and fourth, minute, rounded; club as long as the funicle and the jiedicel together, the joints transverse. Metapleura polished. Hind angles of metathorax toothed. Wings subfuscous, fully developed, the margins ciliated. Legs black, the articulations and the tarsi fuscecl^eut<, MONOGRAPH OF THE NORTH AMKRICAN PROCTOTRYPID.E. 191 Prosacantha nana, h)). nov. 5. Length, 1""". Black; thorax finely rujjoso, subopaque, the scntellnm smooth, shining, faintly punctate; hea. iiov. Kiley. (PI. viii, Fig. 4.9.) " 9 . Length, 1.8""". Black, shining, the thorax finely rugulose, the scutellum almost smooth. Head transverse, thrice as wide as long, the occiput longitudinally striated, the face smooth with a delicate carina extending from the front ocellus to the base of the antennae ; lower part of orbits and cheeks with strijc converging toward the mouth; mandi- bles pale rufous, deeply bifid at tips; antenme lli-jointed, about as long as the body, slender, dark brown or bla^^k, the scape a little pale at extreme base; pedicel ab(mt as hmg as the third funiciilar joint; the first and second funicular joints ehnigate, equal, about twice as long as the pedicel, the fourth subequal with the third ; club G-jointed, slender, long, fusiform. Metanotuni with silvery pubescence; teguhe black; wings hyaline, the venation pale brownish-yellow. Legs reddish-yel- low, the coxje bas'^lly and the middle and posterior tibitB and tarsi, fuscous. Abdomen as long as the heaolished, impunctured, the first segment and the second MONOGKAI'II OF THE NORTH AMERICAN 1'ROCTOTHYriU.E. 193 for two-thirds its leu^tli, coarsely striated, the third with a row of very short striir at extreme base. Habitat. — Jaeksonville, Fhi. Type in Coll. Ashinoad. Described from a single specimen. Prosacantha gracilicorLis, sp. iiov. 9. Length, l.S""'. Black; head and scutellum smooth, polished; thorax fiMcly, closely punctate, opaque; legs pale brownish-yellow, the coxjB black basally. Autennse 12-jointed, brown-black, the scape pale at base, long and slender, about as long as the body; the scape extends slightly beyond the ocelli, slender, a little thickened at the middle; pedicel cyathiform; tirst and second fnniclar joints long, equal, about tivet'mesaslongas thick, the third half the length of second; the fourth still shorter, a little longer than thick; club G-jointed, very slender, and about as long as the the first and second funiclar joints together, the joints only slightly wider than long. Wings hyaline, pubescent, the venation brown. Abdomen a little longer than the head and thorax together, the petiole longer than thick, finely pubescent and coarsely striated, the second segment coarsely striate at base only, the third with some fine longitudinal aciculations basally. Habitat. — Carolina. Type in Berlin Museum. Described from a single specimen, labeled simply "Carolina, Zimmer- mann." Prosacantha marylaudica, sp. iiov. (5 9. Length, 2""". Black; thorax and scutellum rugoso-punctate; head smooth with some sparse punctures and some broad but not deep strife on lower part of the face. Mandibles pale rufous. Antennae black, the scape basally and the pedicel at apex yellowish; the first funiclar joint is twice the length of the pedicel and one-third longer than the second; third and fourth joints small, transverse. Legs, including coxte, brownish-yellow. Post-scutellar spine large, trian- gular, nearly horizontal and projecting over the base of the scutellum. "Wings subhyaline, the marginal vein at least six times as long as the stigmal. Abdomen oblong-oval, longitudinally striated, the fourth and following segments and the venter, punctate. In the male the post scutellar spine is not so decumbent, and does not project over the base of the abdomen ; the third abdominal segment is smoother and shows only a few longitudinal strise on the disk; while the antennfe are long, filiform, the first flagellar joint the longest, about five times as long as thick, the following a little shorter. Habitat. — Oakland, Md. Types in Coll. Ashmead. Described from yi-ecimens received from Mr. E. A. Soiiwarz. 21899— No. 45 13 194 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Prosacantha fuscipennis AHbin. Ent. Anier., in, p. 117, Ch-sh. Syn. Hym. p. 313. S. Leiiffth, 2.2'""'. Robust, black; thorax jiikI scntoUnm coarsely niffoso punctate, opaque; head larjje, broad, shiuinj;:, vertex polished, the froiis aud face coarsely, longitudinally striate. Antennie 12 jointed, long, filiform, brown-black, the scape towards basal half rufous; first flagellar joint the longest, the third, the shortest and emargiuated at base; the joints after the third longer, very slightly in^ tl'^' pedicel, 12A times as long as thick; second joint shorter; third anine large, acute, erect, very slightly curved. Angles of nietathorax acute. Wings subfuscous, fringed. Abdomen oblong-oval, shining, but minutely sparsely punctate, the lirst and second segments and the third, on disk, longitudinally stri- ated or aciculated ; the first segment brownish or dull rufous, rest of the segments black. Habitat. — Jacksonville, Fla. Type in Coll. Ashuiead. Prosacantha zanthognatha, sp. nov. S. Length, 1.5""". Black, shining; head very wide, polished, the frons smooth. The inner orbits and lower i)artof face striated; man- dibles large, yellow, the teeth in the left mandible about equal, in the right with the outer the longer; thora.x and scutellum closely punctu- late or minutely rugulose, shining, the parapsidal furrows slightly in- dicated posteriorly ; legs brownish-yellow. Anteniue 12-jointed, brown- black, the scape yellowish; lirst flagellar Joint a little shorter than the second; fonith and following longer than the second. Post-scutellar spine triangular, acute, oblique. Angles of metathorax subacute. Wings subfuscous, not fringed, the nervures brown. Abdomen oval, black, shining, the first and second segments »!oarsely striated, the third and following punctate. Habitat.— Jacksonville, Fla. ; Type in Coll. Ashmead. Closely allied to P. macrocera but slightly smaller, the thorax more closely punctate, the aiitennie shorter, the third flagellar joint not an- gulated, while the wing, are not fringed. Prosacantha striativentris, sp. nov. $. Length, LS'""*. Black; the head and abdomen shining; the thorax opa.que, minutely, closely punctnlate; abdomen wholly longi- 198 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. tudiiially striated; legs brownisli-yellow, the coxie dusky basally. Head transverse, the face convex, polished, the orbits and lower part of face striated. Mandibles yellowish, the teeth black. Antennae 12- joiuted, filiform, brown-black, the scape pale toward the base; first funiclar joint longer than the second, the third -* little shorter than the second; the following a little longer than the third. Post scutellar spine, small, acute. Angles of metathorax small but acute. Wings subhyaline, the uervures pale brown. IIabitat. — District of Columbia. Type in Coll. Ashraead. Described from a single specimen. The striated abdomen and the relative length of the tfcigellar joints readily distinguish the species. TELE^S Latrcllle. Gen. Crust, et Ins., iv, p. 32 (18o9). (Type T. claricornh Latr.) Head transverse, the occiput margined; ocelli 3, rather close to gether in a triangle; eyes ovate. Antennae 12-jointed in both sexes, inserted on a clypeal prominence; in S filiform, in 9 ending in a 6-jointed club. Maxillary palpi 4-jointed ; labial palpi 3 jointed. Mandibles falcate, bidentate at apex, the outer tooth long, acute. Thorax short, ovoid, the prothorax not visible from above; mesono- tum short, broader than long, without furrows; scutellum semicircu- lar; post-scutellum spined; metathorax very short, the posterior angles rarely acutely toothed. Front wings with a linear marginal vein, rarely five times as long as the short stigmal, postmarginal not developed. Abdomen long-oval, depressed, insert-ed far above the hind coxae, the first segment longer than wide, the third the longest and widest. Legs slightly pilose, the posterior femora swollen, their tibiae and first tarsal joint dilated, the tibial spurs distinct but short. The swollen hind femora, their dilated tibiic and tarsi, stronger tibial spurs, and the larger mandibles can be depended upon to distinguish the genus. The species are rare and only a few have been described that really belong here. TABLE OF SPECIES. Winged. All coxfe and legs pale browniah-yellow 2 All coxae black, legs pale rufous or brownish-yellow. Thorax and scutellum coarsely rugose. Vertex transversely striated; three basal abdominal segments coarsely striated, the fourth basally with a tine, tran<»ver8e, wavy sculp- ture ; rim of scutellum yellow T. lineaticeps, sp. nov. MONOGRAPH OF TFIE NORTH AMERICAN PROCTOTRYPID^. 199 Vertex not striated, but slightly sculptured; three basal abdominal seg- ments striated, the fourth and fidlowiug, finely punctate at base; rim of soutellum black T. coxalis, sp. nov. Vertex smooth ; lirst abdominal segment alone striate ; the sec jnd and third, liolished, but with a mii-roscopic wavy sculpture. T. MANDIBULARIS Ashm. 2. Vertex of head rugose but not striated; three basal segments striated. T. PALLIUU'ES, sp. nov. Teleas lineaticeps, sp. nov. S. Length, 2.S0""". Black, pubescent; head transverse, the vertex and occiput transversely striated ; the face, except a space at the mid- dle, longitudinally strated. Antennse 12-iointed, d?«rk brown, the scape pale at base ; pedicel small, annular ; first funiclar joint four times as long as thick (antenuie broken beyond). Thorax and scutellum coarsely rugose or scabrous. Posterior riiu of scutellum yellow. Post- scutellar spine large, triangular, oblique. Metapleura smooth, pol- ished. Legs pale rufous or brownish-yellow, the coxa? black, the jjos- terior femora swollen, dusky, their tibia? dilated at tip with two dis- tinct spurs; tarsi dilated, spinous. Wings fusco-hyaline, pubescent. Abdomen black, shining, as long as the head and thorax together, nar- rowed at base; tiie first three segments wholly longitudinally striated; the fourth, with a tine, transverse wavy sculpture; the first, at extreme base, yellowish. Habitat. — District of Columbia and Virginia. Types in Coll. Ashmead. The larger size of this species, longer first funiclar joint of antennae, coarser sculpture, yellow rim of scutellum, and stouter femora and tarsi, will at once separate it from the European T. clavicornis Latr., specimens of which are in my collection from France. Teleas coxalis, sp. nov. 9. Length, 1.80 to 2""". Black, shining, pubescent; head trans- verse, polished, the vertex very slightly sculptured but not striated; lower part of face and the cheeks coarsely striate, the latter rounded; thorax coarsely, lineatedly rugose. Mandibles very large, rufous, the teeth stout, the outer the longer. Antenna? 12-jointed, black, reaching to tlie middle of the abdomen, the scape pale at base; first funiclar joint long, twice as hnig as the scape; second, one-third shorter than first; third and fourth transverse. Post-scuteliar spine large, triangu- lar, oblicpie. Metapleura striated. Angles of metathorax produced into a tooth. Legs pale rufous, the coxic black. Abdomen broadly oval, polished, the three basal segments striated, the third laterally smooth, the fourth and following segments very finely puuctulate at base. Habitat. — Arlington, Va. Type in Coll. Ashmeecies. Teleas mandibularis Ashiu. Prosacanlha .naiidibularis A^hm., Ent. Am., in, p. 117. 5. Length, 1.80""". Robust, black ; tliorax rugose and covered with a fuscous pubescence; cheeks flattened; lower part of head below the eyes striated, rest of the head smooth, polished. Mandibles long, curved, brownish yellow, the teeth black, the outer tooth very long, acute. Antenuie 12-jointed, very short, black, not reaching beyond theteguhe, the scape pale at base; first fuuiclar joint very little longer than the i)edicel, the second slightly shorter; third and fourth minute, transverse; club scarcely longer than the funicle. Posterior rim of scutelhim. black. Post-seutellar spine small. Wings fusco-hyaline, pubescent. Legs brownish yellow, the coxje black. Abdomen a little longer than the head and thorax together, smooth, sliining, with a faint wavy-lined sculpture, the first segment alone striated. Habitat.— Jacksonville, Fla. Type in Coll. Ashmead. The short antenuw, relative length of the funidar joints, and the sculpture of abdomen can be depended upon to distinguish tlie species. Teleas pallidipes, Hp. nov. (PI. vni. Fig. 5, unctate. . H. loxgipkxnis, sp. iiov. Third abdotninal segment polished, inipunctate. Wings hyaline; hind femora and tibiic fuscous, the tarsi pale. H. MiNUTissLMtrs Asliin. Wings smoky; all tibiie and tarsi fuscous, the femora pale. H. TIBIALI.S, sp. uov. Coxae and legs yellow. Wings hyaline; scntellam polished; third .abdominal segment smooth. l>olished H. ci.arii'ennis, sp. nov. Wings subhyaline; scutellum punctate; third abdominal segment puuc- t.ate H. PTERinis, sp. nov. 2. Coxa> and legs brownish-yellow. First and second abdominal segments striated, the first yellowish, the third smooth H. BRACHVPTERUS Ashni. 202 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 3. All coxa- Hack, or black basiilly. Head and thorax minutely tlosely pnnctulate, the faoo striolatod. Legs fuscous; trochauters, knees, tips of tibia-, and tarsi, yellow. Scape not pale beneath; third alxloniinal segment ami the venter smooth, shining, inipunctured H. ouscuhii'Ks, sp. uov. Legs rufons. Scape ])a]e beneath; third abdominal segment distinctly punctate, tho venter faintly punctate H. iufipks, sji. a)V. MALES. Wingless. Thorax minutely rugose, punctate ; vertex finely punctate, the face striolated. Antenna' very long, tiliform, black; legs, except coxse, rufous. II. soLiTAluus, sp. uov. Hoplogryon longipennis, sp. no\'. (PI. VIII, Fig. 6, 9.) 9 . Length, 1""". Black, op.aque, minutely, closely punctate, with a seri(\>ous pubescence; cheeks flat and narrowed back of the upper part of the eye; the fjice shining, the lower portion and around the mouth, striated. Mandibles pale. Antenuie 12-3ointed, black, the scape«pale beneath toward base; first and second tuniclar joints almost equal, longer than the pedicel and very little longer than thick; third and fourth joints minute, transverse. Post-scutellar spine acute. Meta- thorax with acute angles. Legs fuscous or brown, the trochanters, knees, tips of tibiie, and tarsi pale; coxi^ black. Wings subhyaline, ciliated; when folded, longer than the abdomen. Abdomen broadly oval, narrowed at base; first segment a little wider than long; it, as well as the second, striated; third segment faintly microscopically punctate, but shining. Habitat.— Ottawa, Canada. Types in Coll. Ashmead. Described from 2 specimens received from Mr. W. H. Harrington. Hoplogryon minutdsBimus, Asbm. Proaacantha minuthsima Ashm., Eut. Am., iii, p. 117, 9 • 9 . Length, 0.75""". Black, subopaque, closely, microscopically punc- tulate; face smooth, shining, with some strije only between the eye and the mandibles. Mandibles brownish. Antennte 12-jointed, black; the first and second funiclar joints subequal, a little longer than thick ; third and fourth, minute, transverse. Post scutellar spine small, but acute. Angles of metathorax not acute. Legs brown or fuscous, the trochan- ters, knees, tips of tibiiv, aniv t'a tarsi pale; coxae black. Wings sub- hyalhie, fringed; when folded scarcely extending beyond the tip of the abdomen. Abdomen broadly oval, polished, impunctured, the first and second segments striated. Habitat. — Jacksonville, Fla. Type in Coll. Ashmead. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID.E. 203 Allied to //. longipennis, but smaller, more sliiiiinj;, tlie puuctation liner, the wings shorter, the angles of the metathorax not acutely toothed, while the abdomen, except the first two segments, is impune. tared, the first segment being much wider than long. Hoplogryou tibialis, sp. nov. 9. Length, 1.20"". Black, subopaque, very closely, minutely punc- tate; face smooth, polished, with some faint strite on either side the antennte. Mandibles pale rufous, the teeth black. Antenna; 12- jointed, black; first and second Joints about equal, fully twice as long as thick; third and fourth minute, transverse, i ost-scutellar spine acute. Angles of metathorax acute. Legs yellow, the coxib black, while all the tibia? and tarsi are fuscous. Wings smoky, with short cilia. Abdomen oval, much narrowed at base, highly polished, black ; the first segment, and the second at base and at the middle, striated; the first segment is as long as wide. Habitat. — Virginia. Type in Coll. Ashmead. Described from a single specimen received from Mr. O. Heidemann. This species is quite distinct from the others by the length of the first and second funiclar joints, smoky wings, and the color of the legs. Hoplogryon claripennis, sp. nov. 2. Length, 1.20'""'. Black, shining; head transverse, polished, with some faint stria; below the eyes; thorax faintly puuctulate, the scutellum polished, impnnctured; mandibles piceous. Antenna; 12-jointed, black ; the scape at base and the pedicel at tip, pale; first and second funiclar joints nearly equal, the first more than twice as long as thick;* third and fourth small, subquadrate. Post-scutellar spine, oblique, acute. Metathoracic angles produced into acute spines. Legs, including coxse, brownish-yellow. Wings hj'aliue, scarcely tinged. Abdomen oblong oval, narrowed at base and highly polished, the first and second segments coarsely striated, the first nearly as long as wide. Habitat. — Virginia. Type in Coll. Ashmead. ' ' • This pretty species was given to me by my friend Mr. O. Heidemann. Its shining surface, less distinctly punctured thorax, highly polished scutellum, and the length of the funiclar joints readily distinguish it. Hoplogryon pteridis, sp. nov. 9 . Length, 0.80""". Black, subopa(iue, closely microscopically punctulate; fiice smooth, polished; mandibles yellowish. Antenna; 12 jointed, black; first and second funitiar joints equal, scarcely longer than thick and very little longer than the pedicel ; third and fourth minute, transverse. Post-scutellar spine distinct, acute. Angles of 204 BULLETIN 45, UNITED STATES NATIONAL MUSEIM. iiietiitborax siibiicute. Legs, incliKliug tlie coxa*, yellow, tlic ijosterinr l»air slightly dusky at base. Wings snhliyaliue, wlicii folded, not or scarcely longer than tbe abdomen and somewhat narrowed. Abdomen rotund, oval, polished, widened from the baseof tlie first segment; lirst and second segment at base striated, the first, twice as wide as long. Habitat.— Fortress Monroe. Va., and District of Cohnnbia. Types in Coll. Ashniead. This si)ecies was taken by ^Nlr. E. A. Schwarz, at Fortress Monroe, The color of the legs and the shape of tiie abdomen and wings, readily separate the species from all the others, Hoplogryon brachypterus Ashm. Prosacantha hrachypUrn Ashm., Ciiii. Ent., xx, p. 50. 9 . Length, 0.75 to 0.80'""'. Black, subopaque, closely microscopi- cally punctulate; the head jwlished, shining, the face having a delicate central line below the front ocellus; mandibles pale; legs brownish- yellow, reddish, brownish or fuscous, with the distal ends of femora and tibiie and the tarsi, yellow or pale. Antenna' 12-jointed, black or brown-black; first and second funiclar joints subequal, a little longer than thick; third and fourth, very minute. Post-scutellar sjjine minute. Angles of metathorax not toothed. Wings subhyaline, much narrowed and shortened, when folded reachir.g scarcely beyond the middle of the abdomen, imbescent, but not distinctly fringed. Abdo- men broadly oval, highly polished, black, the first segment wider than long, yellowish and striated. Habitat. — Ottawa, Canada. Types in Coll. Ashmead. For several specimens of this highly interesting species,*! am in- debted to Mr. W. H. Harrington. The abbreviated, narrowed, non- ciliated wings and the yellow petiole distinguish the species. Hoplogryon obscuripes, sp. nov. 9 . Length, 0.80""". Black, opaqne, closely, minutely punctulate, covered with a fine sericeous pubescence; the face shining, striolated. Mandibles pale brown. Antenuai 12-iointed, brown black; first and second funiclar Joints subequal, the first abcmt one and a half times as long as thick; third an and legs yellow G. fumipknnis, sp. nov. 2. Head and thorax iincly, closely puuctulato, siibopaque, the lower part of face with striic converging toward the month. All cox» hliick; lirst and second abdominal segments striated. Metathoracic angles obtuse or snbacnte. Legs pale rufoii.s or brownish-yellow; abdomen shining, bnt microscopic- ally pnnctato G. boreai.is Ashm. Legs fascons. the trochanters, knees, and tarsi yellow; abdomen polished, iinpunctati> G. canadensis Ashm. MetatUoracic angles acnte. Legs ^^ro"'nish-yellow; abdomen, above and beneath, pnnetate, subopaque. G. COLUMBIANUS, sp. nov. All coxt-B pale ; metathoracic angles obtuse. Legs pale yellow ; abdomen smooth shining G. flavipes, sp. nov. Oryon fumipennis, sp. nov. 5. Length, 1.40'"'". Black, shining, minutely puncto.late; face smooth, polished, with faint striae at the mouth; mandibles and legs f MONOGHAPH OF THE NORTH AMERFCAN PROCTOTRYPID.E. 207 yellow. Aiitennu' 12-Jouited, black, tlio scape yellowisli toward the base; first two funiclar joints equal, about twice as loiijj as the ])edicel; third and fourth, njiiiute, transverse. Mesonotuni with traces of the parai)sidal furrows posteriorly. Scutelluni smoother than the mesono- turn, but still slightly punctate. Metathorax laterally above and the nietapleura i)olished, the angles obtuse. Wings smoky-hyaline, paler at base. Abdomen oval, smooth, polished, the lirst and second seg- ments striated. IlAKiTAT. — District of Columbia. Type in Coll. Ashmead. Described from one specimen received from Mr. E. A. Schwarz. G-ryon borealis AKhiii. (PI. VIII, Fig. 7, 9.) Aeolus borealis Ashm., Can. Ent., xx, p. 50. 9. Length, I""". Apterous; black, subopaque, closely microscopic- ally punctate and with a fine sericeous pubescence; lower part of face striated. Mandibles pale. Metathorax with the angles subacute. Antenna^ 12-jointed, black or brown-black; first funiclar .joint longer and thicker than the ])edicel; second one-third shorter than the first; third and fourth minute, transverse. Legs pale rufous or brownish- yellow, the coxie black. Abdomen oval, microscopically punctate, but shining, the first and second segments striated. Habitat. — Ottawa, Canada. Types in Coll. Ashmead. Described from four specimens received from Mr. W. H. Harrington. Gryon canadensis Ashm. Aeolus tanad-'nsis Ashm., Can. Ent., xx, p. 50. 9. Length, 0.60""". Apterous; black, subopaque, closely, minutely l)unctulate and pubescent; face polished, with stride at base. Man- dibles pale rufous. Antenna; 12-jointed, black, the scape pale at base; first and second funiclar joints very little longer than thick, the second slightly the smaller; third and fourth minute, transverse; club very large, the joints close set, transverse. Scutellum small, sublunate, shining. Metathorax short, narrowed posteriorly, the angles not at all prominent. Legs fuscous, the trochanters, knees, and tarsi, honey- yellow. Abdomen rotund-oval, smooth, shining, impunctate, the first and second segment very short, transverse, striolate, the second with a fringe of glittering hairs at apex. Habitat. — Ottawa, Canada. Types in Coll. Ashmead. Described from four specimens received from Mr. W. H. Harrington. Allied to G. borealis, but smaller, the legs diflferently colored, the meta- thoracic angles not at all jirominent, while the abdomen is polished, imi)unctate. 208 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Oryon columbianus, hi>. nuv. 9. I^t'iifjtli, 1.10'""'. Siibrobiist, bliU'k, opaquo, closoly, tnltmtcly pUTH'tuIate; lirad li-ansversr, wider tliaii thorax, tlic ant«'ri<>r orbits, broadly, and tlu' cliorks, striated ; mandibles pale rtitbns ; seape ami lejjs, except c«»xa*, brownish-yellow or pale rnfons; Haj^cllmn brown-blaek. Antenna' 12-Jointed, not (piite as loii};' as the body; first and second inniclar Joints abont ecpial, twice as lon<«- as the pedic«'l; third and fonrth minnte, annular; club a little lonjjer than the pedicel and funicle united, rather stout, the joints tranverse iiuadrate. Anjiles of nu'tathorax acute; post soutellar rid^e eniarginated at the middle. Abd(mien bioadly oval, closely punctate, subopacpu', seiiceous, the first and secoiul sej;inents with coarse stria^ the apical margin of the sec- ond smcjoth, polished; first and second ventral sej^nients striated, the third an«l followinj; piuictate. IlAiJiTAT. — District of Columbia. Types in Coll. Ashmead. Describe»l from several specimens. Gryon flavipes, sp. iiov. 9. Len}ith,0.(JO'"'". Black, shining, finely punctulate; face smooth, polished; legs i)ale yellow ; metathorax with obtuse angl's. Autennai lli jointed, brown-black, the s(!ape, beneath, toward base, pale; first funiclar joint a little longer than the pedicel; second shorter than the first, not longer than thick; third and fourth, minute, transverse. Ab- domen rotuiul-oval, smooth, shining, the first segment and the second at the suture, striated; venter piceous. Habitat — Ottawa, Canada. Type in Coll. Ashmead. Described from a single speciwien received from Mr. W. II. Harring- ton. Differs from the other species in the smootliness of the face, paler legs, smoothness and sculpture of the abdomen, and the color of the venter. ^ Tribe IV. — Scelioninl • ^ A tribe allied to the Teleasini and always with the abdomen dis- tinctly carinated along the sides; but, except in a few genera, the abdo- men is much more elongated, being pointed or fusiform, rarely oval, and extends beyond the tips of the wings when folded, the third seg- ment the longest, or the second and third are about equal in length. The venation, however, is quite distinct; the postmargiual uervure, except in a few cases, is fully developed and usually longer than the marginal, while the stigmal is never very short. When the postmar- ginal nervure is absent the submarginal terminates in a stigma {Bceoneura and Scelio). MONOORAPn OF THE NORTH AMKRK'AN PROCTOTRYPID.E. 209 The i)iira.siti.sm of many of the genera, is known, all being iJaraaites in the eggs of various insects, but princip;illy in those belonging to the On hoptera and Ilemiptera. linrvcotmH nud Cacun attack the eggs of the White Tree-crickets, Occanthns nireioi, etc.; Macroteleia, those of Orchi'Umum; Scelio, various Locusta or Grasshoi)pers, DisnoHtdra, Caloptenus and Avridium; while Hadronotux, a genus easily mistaken for I'elenomus, is parasitic on ditterent Heteroptera-Hemiptera, belong- ing to the families Coreidse, i'yrrhocoridne and Reduviidie. It is believed the genera can be readily separated by the aid of the following table: TABLE OF GENERA. FEMALES. Postinargiual vein wanting or never greatly developed, always shorter than the stignial vein, tin; siibniargiunl vein oftloM H-tlcntaio. Fii'Ht ila<;i'li!ir joint Hcarcvly longer tliuii tlirtliinl, tlie tliinlexcitwd MACnOTKI.KIA WoHtW. First liii<;cllur Joint much lon<^c ■ thiin tlic third. IJAUYCoNirH Forstt-r. Mt'taMciitollnm Hpinetl OrisTiiA<'A\TiiA AHhm., gcu. uov. Mtituthorax with a laii;c m-niiciniilar incloHcd spac*' at haso. Marginal vein pnnetit'urni; luundiblca 3-deutato. CiiKOMoTKi.KiA, gen. nov. 3. MftaHcntelluni not spincd. Marginal vein pnnciiforui or never im long iiH the dtigniul. Mandibles 3-dentate. First llajieilar joint very long Calotelkia Westw. First llagcllar Joint sliorter than secoiul Cacus Riley. Marginal vein long, always longer than the tstigmal. Mandibles 3-dcntate Uaryconus FOrster. Metascutellum spined. Marginal voi't longer than thestignial; mandibles 3-»lentato..LAPiTiiA, gen. uov. Marginal vein shorter than the stiguial ; mandibles 2-dentate. OrisTiiACANTiiA Ashoi., gen. uov. 4. Mesonotnni with three distinct furrows. Metascutellum armed with 2 teeth; tip of abdomen ending in two short prongs. HorLoTKLEiA Ashm., gen. uov. Mescmotnm with two furrows. Metathorax unarmed; mandibles 3 dentate (MAcnoTEi.EiA). Metatiiorax with U small teeth; mandibles 2-dentate (Cacus Riley). Mesonotum without furrows. Metascutellum with a small acute spiue Oiusthacantiia Ashm., gcu. uov. Motascutelluin 8inii)le. Metanotum with 2 small teeth at ai)ex. Mandibles 2-dentate Cacus. Metanotum unarmed, simple. Abdominal segments strongly constricted. Antenn;e subclavate Cremastob.eus, gen. nov. Abdominal segments nornuil. Antenuie filiform, submoniliforui Haduonotus Forster. 5. Snbmarginal vein not reaching the costa, knobbed B.eoneura Forst. Submarginal vein reaching the costa. .Submarginal vein not terminating in a stigma. Marginal vein very short, the postmarginal scarcely developed or shorter than the stigmal. Mesonotum with 2 furrows Idkis Forster. Submarginal vein terminating in a thickened stigma. Head without a frontal ledge or lamina; postmarginal vein not developed. 6 Head with a frontal lamina or ledge. Scutellum (juadrate, the angles acute ; the postscutellum spined. AcANTiioscELio, gen. nov. Scutellum and postscutellum normal Sparasion Jurine. 6. Mesonotum with 2 furrows. Maxillary i>alpi long, .5-Jointed; antenna' long, setaceous, 12-jointed. ScEiiOMORPHA, gen. nov. Mesonotum wiihout furrows, or rarely distinct. Maxillary palpi short, 3-jointed; antenn:e short, fusiforn, 10-jointed. ScELio Latreille. 212 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. CALOTELEIA Wtstwood. Traus. Loml. Ent. Soc, ii, p. ~h>, I'l. 7. f. 10. (Type C. nitrantia Westw. j Head tiiiiisverso, sulxiiiadrate, the frous convex, the occiput rouud- edly emargiiiated ; ocelli 3 in a triangle, the lateral close to the eye; eyes large, oval, bare or faiutly T>uhescei)t. Antennie inserted just above the clypens, 12-Jointed in botli sexes; in 9 clavate, the club 5- or <» Jointed, the last two funiclar Joints usually transverse or quadrate; in c? liliforni, long; tiie flagellar Joints long, cylindrical. Mandibles 3-dentate. Maxillary palpi 4 Jointed; labial palpi 3-Jointed. Thorax ovate, the prothorax scarcely visible from above, except at the lateral corners; niesonotum usually entirely without furrows, although occasionally with 2 distinct furrows; scutellum semicircular; metathorax emargiuate and carinated along the sides. Front wings with the nuirginal vein short, punctiform or rarely half the length of the stigmal ; the stigmal vein oblique, and usually end- ing in a little knob; postmarginal vein very long, basal vein distinct, rarely entirely absent. Abdomen long, fusiform, pointed at tip and narrowed at base; the basal segment in the 'i with a horn extended forw.ard over the meta- thorax. Legs rather long, the femora and tibial subclavate; the tibial spurs 1, 1, 1, the middle and hind pairs rather weak; tarsi long, the basal Joint several times longer than the second; claws simple. This genus was originally described by Prof. Westwood, from a sin- gle specimen found embedded in Gum anime, in the collection of Rev. F. W. Hope. The genus is not rare in South America and the West Indies, and five species have been discovered in our fauna. It is closely allied to Barycon «,v Forster : but the marginal nervure is usually punctiform, or at least very short, and the i)etiole is longer and more slender. TABLE OF SPECIES. Body palo 2 Body black. Coxa^ l)laclv, legs rufous or hrowuish-yellmv. Three basal abdominal segments longitudinally Htriatod, the following smooth, polished C. striata, sp. nov. Two basal abdominal segments stiiatcd; first and second fnniclar joints very long, slender; third and fourth stouter, the third longer than thick; the fourth quadrate C. nEiDKMAXNii, sp. nov. 2. Brownish-yellow. Head pale, coucohtrous with the rest of tho body. Abdomen banded with black or fuscous C. cixctivknthis Ashm. Abdomen not banded; apex of horn and tip i>f abdomen black or fnscons. ('. iMiutici.AVA Ashm. Head black or fuucouH C. marlattii, sp. nov. MONOGUAPII or THE NOUTH AMERICAN PROCTOTRYPIDiE. 213 Caloteleia striata, sp. nov. 9. Length, 2.0""". Black, lustrous, rather closely punctate; head quadrate, with a polished, iinpuuctate spot on the frons. Antennae 12-Jointed, brown, the base and tip of scape and the tip of i)edicel, yellowish; pedicel rather long; lirst funiclar Joint slightly longer and slenderer than the pedicel; second, about half the length of the first and a little stouter; third and fourth, transverse; club G-jointed, all the joints transverse. Thorax without furrows. Legs rufous, the coxte black. Wings hyaline, the venation brown; there is a distinct basal vein; the marginal is very short, about one-third the length of the stigmal, while the stignial ends in a small knob, the postmarginal being very long. Abdomen long, x>ointed, fusiform, about thrice the length of tlie thorax, the basal segment with a distinct blunt horn at base, and it as well as the second and third segments are distinctly longitudinally striated; all the following segments are smooth, shining. Habitat. — Washington, D. C. Type in National Museum. Described from a single specimen. Caloteleia Heidemaunii, sp. uov. (PI. IX, Fig. 1, 9.) 9 . Length, 2.4™"'. Elongate, slender, black, shining, punctate; head subquadrate; mandibles and palpi yeHow; legs rufous, the tro- chanters, knees, tips of tibia' and tarsi yellow, the cox?e black, shin- ing, impunctnred. Anteniue 12-Jointed, piceous, the tips of the scape, pedicel, and funi(;lar Joints yellow, the club black ; pedicel and first funiclar joint very long, nearly of an e(iual length, the latter the slen- derer; second funiclar Joint one third shorter than the first; third and fourth stouter, the third longer than thick, the fourth quadrate; club a little thicker than last two funiclar joints, long, cylindrical, the Joints subquadrate. Mesonotum without furrows. Mesopleura Avith a deep femoral groove, pubescent, sparsely punctate. Wings subhyaline, the marginal vein short, scarcely one-third the length of the rather long stigmal vein ; basal nervure distinct. Abdomen lojig, jwinted, fusiform, black, shining, the first and second segments striated, the following smooth, polished, impunctured. Habitat. — Virginia. Type in Coll. Ashmead. Described from a single si)ecimen collected by O. Heidemann. Al lied to C. striaf(t, but quite distinct by the shape of the head, relative length of fnuiclar joints, and the sculpture of the abdomen. Caloteleia cinctiventrls Asbm. B(FOHeitra ciHctiveniris AsLm., Ent. Am., ill, p. 99, 9 ; Cress. Syn. Hym., p. 313. 5. Length, 1.80""". Brownish-yellow, closely, minutely punctate; abdominal segments at base barred with black or fuscous; legs palej 214 BULLETIN 45, UNITED STATES NATIONAL MUSEUM, the ffcmoisi and tibuu very slightly obfuscated. Head transverse, with a fuscous spot on vertex. Antennie 12-jointed, the scape and funicle pale brown, the club black ; first funiclar joint slightly shorter than the pedicel, or a little longer than thick; second, shorter; third and fourth minute, transverse; club fusiform, the joints short, transverse. Wings hyaline, with a band below the punctiform marginal vein. Abdomen long, fusiform, minutely punctate; the short horn on first segment black, shining; base of the following segments black or fuscous. Habitat. — Jacksonville, iP\&. Type in Coll. Ashmead. This pretty little species is quite distinct from all the others, in size, in the banded anterior wings, and in the bunded abdomen. It was originally described in the genus Biconeura on account of the puncti- form marginal vein. Caloteleia rubriclava Ashm. Aeolus .•ubriclavua Ashm., Ent. Am. iii, p. 99; Cress. Syn. Hym., p. 313. 9 . Length, 3""". Pale brownish-yellow; the short horn at base of abdomen black; eyes and ocelli brown. Antennae 12-jointed, pale; the club large, subsolid, inarticulated, reddish-brown; first funiclar joint shorter than the pedicel ; the three following very short. Mesonotum closely, minutely punctulate, with 2 delicate furrows. Wings hyaline, the marginal vein very short. Abdomen long, pointed-fusiform, the first three segments longitudinally striated, the third apically, and the following, smooth, shining. Habitat. — Ja(;ksonville, l^ la. ^ Type in Coll. Ashmead. This species is quite distinct from the others in color, and in having a subsolid club. ^ ^ Caloteleia Marlattii, sp. nov. S 9. Length, 2.8 to 3.2'""'. Brownish-yellow, closely, minutely punc- tulate; the head black or fuscous,the lower partof cheeks and faceoften pale, especially in the female; the first and apical abdominal segments in the male black or fuscous. AntennjB 12-jouited, brown-black ; in S filiform with the scape pale, the first funiclar joint a little longer and thicker than the pedicel, the second a little shorter than the third, and both shorter than the first, the joints beyond oval-moniliform, loosely joined; in 9 terminating in a large 6-jointed club, the second funiclar joint about half the length of the first, the third and founh subquadrate. Mesonotum with 2 delicate furrows, punctate. Wings hyaline, pu- bescent, the marginal vein slightly thickened, short; the stigmal vein short and ending in a knob. Abdomen lung, fusiform, much narrowed at base, the first segment MONOGRAPH OF THE NORTH AMERICAN I'ROCTOTRYPID^. 215 being long, petioliform, linear, the three basal segments longitudinally striated, the striations on the third fainter than on the other two, smooth laterally and at apex; rest of the abdomen smooth. Habitat. — Kansas, Illinois, and New Jersey. Type in Coll. Ashmead and National Museum. BARYCONUS Filrst^r. Hym. Stud., Ii, p. 101 (1856). Head subquadrate or quadrate, roundedly emargiiiated posteriorly; ocelli 3 in a triangle, the lateral very close to the eye; eyes large, oval, pubescent. Antenna? inserted Just above the clypeus, 12-jointed in both sexes, in 9 terminating in a G-jointed club, the last funiclar joint transverse; in $ long, filifoi'm, the first flagellar joint longer than the third. Maxillary palpi 4-jointed; labial palpi 3-jointed. Mandibles tridentate. Thorax ovoid, the prothorax not or scarcely visible from above; ineso- thorax with or without furrows; metathorax short, em arginate poste- riorly, with delicate keels laterally. Front wings with a long marginal and a very long postmarginal vein, the marginal being usually twice as long as the stigmal, oblique, clavate", sometimes a little curved ; basal vein usually distinct, rarely subobso- lete. Abdomen long, linear, or fusiform, and not so much narrowed at base as in Calotdeia, the basal segments in 9 with a horn at base extending forward over the metathorax, sometimes reduced to an deviated convex prominence. J^. * ; -4 ^ \ . . . ■ Legs long, the femora and tibiie subclavate; the tibial spurs 1,1,1; all tarsi slender, much longer than their tibiae. Fiirster's type of the genus appears never to have been described. The genus is closely allied to Caloteleia, but is readily separated by the longer marginal vein and the diflference pointed out in the abdomen. It is parasitic on the eggs of white tree crickets, Oevanthus. BaryconuB oecanthi, sp. iiov. Riley. (PI. IX, Fig. 2 $.) " ^ 9 . Length, 2.5 to 3""". Black, closely punctate, subopaque and sparsely covered with a sericecms down. Head quadrate; eyes pubes- cent; antenna? 12-jointed, black; in $ fllitbrm-submoniliform, the first and second funicular joints elongate, about equal, thrice as long as thick; third slightly shorter; fourth half the length of third; joints beyond to the last, moniliform; the last fusiform, twice the length of the penultimate; in 9 terminating in a long 6-joiuted club. 216 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. "Thorax punctate, without furrows; legs black, the base of the tibiae and tarsi brownish; wings hyaline, ])ube rent, the venation brown, the marginal vein longer than the stigmal, the latter ending in a small knob. Abdomen twice as long as the head and thorax together, linear- fusiform, lineatedly rugulose, the apex of the horn in the female pol- ished. "Habitat. — Lincoln, Nebr. "Type in National ]\Iuseum. "This species was reared by Prof. L. Bruner from the eggs of Oecan- thus niveus, and probably is the insect that Mr. Howard Ayers treats under the genus Teleas in his biological study published in Memoirs Bost. Soc. N. H., vol. Ill, p. 225, 1884."— [From Riley's MS.] MACROTELEIA Westwood. Proc. Zoiil. Soc, 1835, p. 70. (Type A/, eleoniimoidex Westw.) Head transverse, subquadrate, broader than the thorax, the frons convex, the occiput slightly emarginate; ocelli 3 in a triangle, the lat- eral touching the eye; eyes oval, bare. Antennae inserted just above the clypeus, 12-iointed in both sexes, in 9 clavate, the club large, G-jointed; in $ long, filiform, the first flagellar joint scarcely longer than the third, the third excised. Maxillary palpi short, 4 jointed; labial palpi 3 jointed. Mandibles tridentate. Thorax ovate, the prothorax slightly visible from above; mesothorax with or without furrows; scutellum semicircular; metathorax not very short with two carinae above, diverging posteriorly, and with delicate lateral carinae. Front wings with a long marginal vein nearly twice the length of the stigmal, the postmarginal greatly lengthened, the stigmal vein ob- lique, usually with a little knob and sometimes with a radial branch from its tip; basal vein sometimes present, usually obsolete. Abdomen sessile, greatly elongated, fusiform or linear, projecting be- yond the tip of the wings when folded, the first four segments nearly equal. Legs as in Baryconus, the tibial spurs 1, 1, 1, distinct, the basal joint of hind tarsi less than thrice as long as the second. Distinguished by the long marginal nervure and the greatly elongate, fusiform abdomen. Species occur with and without parapsidal furrows, and with and without a basal nervure, and these characters can be used to separate tlie genus into sections. If the species become numerous they might be entitled to generit; value. The genus is parasitic on the eggs of the locustid genus Orchelimum, MONOGRAPH OF THE NORTH AMERICAN PR0CT0TRYP1D.E. -217 TABLE OF SPECIES. FKMALES. Abdomen more than five times iis long as tlie lieatl .and thorax united, the tlirec basal segments coarsely lineatedly sculptured, the rest more finely striated and punctate; scape and legs yellow, M. MACKOOASTKU, sp. nOV. Abdomen scarcely thrice as long as the head and thorax united. Coxa; black; nbdomeu with a lineateil sculpture basally, the apical seg- mi uts almost smootli but still faintly jiunctate . . M. floridaxa Ashm. Coxaipale; abdomen with a thimble-like puuetation M. viroiniknsis, sp. uov. Macroteleia maciogaster, sp. nov. (PI. IX, Fig. 6,^.) $ 9. Lengrtli, 5, 8""'; $, 4.60""". Brown-black, pubescent, with round punctures; six basal joints of 9 antenn.ne and legs, except coxae, brownish-yellow; the pedicel and the first funiclar joint very long, the latter the longer; second funiclar joint one-half the length of the first; third and fourth, short, subequal ; club rather slender, the joints, ex- cept the last, a little wider than long; the $ antennjB are filiform; the pedicel greatly elongate, as long as the first and second funiclar joints together, the joints beyond a little more than twice as long as thick. Mesonotum with 2 furrows. Scutellum short, transverse, with a row of punctures behind. Metanotum very shrrt, the abdomen being in- serted just back of the post- scutellum on a line before the insertion of hind coxfe. The abdomen in both sexes is very long, in the 9 meas- uring 5""" in length and more than twice the length of the wings when folded, with coarse, rounded punctures and little raised lineations; after the third segment the punctures are smaller and the surface is smoother. Wings fusco-hyaline, the marginal vein about 1^ times as long as the stigmal, the latter ending iu a small knob, the postmar- ginal very long. Habitat. — Texas. r 7 Types iu Coll. Ashmead. ' ' Described from 15,19 specimen. Macroteleia floridana Ashm. (PI. IX, Fig. 6, 9.) Bceoneura floridana Ashm., Ent. Am., iii, p. 99; Cress. Syn. Hym., p. 313. S 9 . Length, 3.5 to 4""". Slender, greatly elongated, black, rugoso- puuctate, and sparsely pubescent. Antennae dark-brown, the scape pale; first funiclar joint in 9 longer than the pedicel, the second slightly smaller, the third still shorter", the fourth wider; club 6-jointed, large. In S the pedicel and first funiclar joint about equal, the second short, the third a little dilated, slightly emargiuated at base, the following submouiliform, slightly longer than thick. Mesonotum with 2 dis- tinct furrows, the metanotum with 2 delicate keels on disk, sometimes with a tuft of pubesceiif'e between. Wings hyaline, very slightly 218 . BULLETIN 45, UNITED STATES NATIONAL MUSEUM. tiiifjed, pubescent; margiual vein abont twice as long as tli»> vtlgmal, the postmaiginal very long. Lrgs brownish yellow; in 9 with the coxae black. Abdomen, in 5 ,long t'lisiforni, in i long, linear, scarcely widened at tlie middle, extending far beyond the Avings when folded, and about thrice as long as the thorax; first and second segments striated and punctate, the following segments punctate and faintly rugose. Habitat. — Florida; Virginia. Tyi)es in Coll. Ashmead. Macroteleia virgiuiensis, m]). nov. 9. Length, ^""". Black, shining, with thimble-like punctation; head transverse-quadrate; eyes very large, rounded, pubescent. An- tenufB 12-jointed, clavate, brown-black, the scape brownish-yellow; first funiclar joint long, one-third longer than the pedicel, the second two-thirds the length of the first, the third and fourth subequal, but still longer than wide; club G jointed, gradually thickened from the fourth funiclar joint, long, gradually tapering off at both ends. Mevsonotum with two distinct furrows. Scutellum smoother, sparsely punctate. Metathorax with a median keel. Wings hyaline, the mar- ginal vein twice the length of the stigmal, the latter rather short, end- ing in a knob; basal nervure wanting. Legs, including coxa?, reddish- yello'\\'. Abdomen pointed, fusiform, about twice as long as the head and thorax united, with close, thimble-like punctures, some of which are elongated and with raised lines, the first segment striolated, the suture between the first and second crenate; the first and second seg- ments are about equal in length, a little shorter than the third and fourth, which are also equal. Habitat. — Arlington, Va. . . •' / ' ; Type in Coll. Ashmead. -^ - - .'^" Since this description was drawn up specimens of this species were reared by Dr. Riley, in the Department of Agriculture, from the eggs of Orchelimmn ylahernmnm. • .. , CALLISCELIO Ashra., gen. nov. (Type, C. laticinctus.) Head transverse, the frons convex, the face not impressed, occiput and cheeks delicately margined ; ocelli 3, large, in a triangle, the lateral touching the eye; eyes very large, oval, bare. Antennai inserted at the clypeus, 12-jointed in both sexes, in 9 with a 6-jointed club, all the funiclar joints elongate; in S filiform, the first flagellar joint long, joints 4 to 10 submoniliform. Mandibles bidentate. Maxillary palpi 4-jointed; labial palpi 3-jointed. ^ Thorax ovate, rounded before, the prothorax slightly visible fr6tii- above, the mesonotum with two distinct furrows, scutellum semicircu-' lar, convex; metathorax short, carinat€d laterally. " MONOGRAl'II OF THK NORTH AMl^KK'AN rK()(.T()TltV]'ID.E. 210 Front wings with ji distinct busal iutvuic, the nuir^'uil vein long, fully twic(r as long as the stigiual, the hitter ol)libbe(l at tip, basal vein distinct. Abdomen pointed fusiform, much narrowed at base, the tip project- ing a little beyond the wings when folded, Urst segment linear, jietiol- ilorm, not quite as long as the second, whicii is the longest segment; third segment two-thirds the length of the second; the fourth a little more than half as long as the third; fifth subequal with fourth; sixth conical, about as long as the third. Legs long, slender, the tibial spurs 1, 1, 1, weak, the basal joint of hind tarsi nearly four times as long as the second. Allied to Mdcroteleia, but separated by the bidentate mandibles, more transverse head, and narrower petiole. Calliscelio laticinctus, sp. nov. (PI. IX, Fig. 7, 5.) 9 , Length, 2.5"""'. Head black; face, clypeus, mandibles, and palpi, pale; thorax rufims or brown, the metathorax black; legs yellowish, posterior coxas and femora obfuscated above; abdomen fusiform, much longer than the head and thorax together, piceous-brown, the basal one third of seci .'{Jointed, Mandibles tridentate. Thorax ovate, prodneed into a little ne(!k anttu'iorly, the prothorax visible from above as an arcnate line; niesothorax with 2 distiuet grooved lines; sentellnm seniicircnlar, with a ridge behind; nietanotuni with a semicircular inclosed space at base, the sides oarinated. Front wings with the subniarginal vein distant from the costa, curv- ing, and Joining it at about the middle of the wing; marginal vein punctiform; the postinargiual very hmg; stiginal rather long, obli(ine, ending in a little knob; basal vein distinct, with a basal cell. Abdomen very long fusiform, extending beyond the tip of the wings when folded, the second, third, and fourth segments longer than the rest, the fourth a little the shortest. Legs as in Macrotelcia, tibial spurs 1, 1, 1, basal joint of hind tarsi about 4 times as long as the second. A beautiful and distinct genus, remarkable for the large, semicircu- lar inclosure on the metanotum, which, in connection with the vena- tion, renders the genus easy of recognition. Chromoteleia semicyanea, sp. nov. (PL IX, Fig. 3, 9.) . S 9. Length, 4.5 to 5""". IIeau. nov. Hiley. (Typo C. acanthi Riley.) " Head subtiuadrate, emargiuate behind, the occiput feebly margined ; ocelli 3, triangularly arranged, the lateral close to the eye; eyes ovate, bare. *'Antenna? inserted at the clypeus, 12-jointed in both sexes; in 5 cla- vate, the club G-jointed, the last funicular joint usually transverse, the otliers longer than wide; in S flliform, the third funicular joint a little dinted and emarginate toward base. ' "Mandibles short, either tridentate or bifid at tip. * "Maxillary palpi 3-jointed; labial i)alpi li-jointed. "Thorax ovate, narrowed before, the prothorax slightly visible from above; mesonotum most frequently without furrows, rarely with dis- tinct furrows; metathorax not especially short, Avith two lateral keels, a median prominence or carina, and with usually two small erect teeth at apex, above the insertion of the abdomen. "Front wings with the submarginal vein joining the costa a little be- yond the middle of the wing, the marginal vein variable, scarcely half the length of the stigmal, or much longer; the latter oblicjue, termi- nating in a knob; the postmarginal vein very long, the basal vein sub- obsolete, "Abdomen much as in Barycotius, but the female without the horn- like projection at base. "Legs as in Baryconus, the tibial spurs 1, 1, 1, the middle and hind pairs weak, tarsi long and slender, the basal joint more than four times the length of the second." — [From Rileyh M8.\ It is probable that under this genus Dr. Riley has included two distinct genera, one distinguished by having 3 dentate mandibles, the other in having the mandibles bifid or 2-dentate, but otherwise they are so similar that for the present I believe it best to follow him in consider- 224 IJULLKTIN 45, UNITED STATES NATIONAL MUSKUM. in^ the speck's coii^joiioiic. The typo of the gt'iius, r<»c»ih'y, has ^{ (lentjito niandiliU's. Those with L'deiitat*' inaiulil>h\s are IVom ISouth Aiiu'rica and the West Indies, and are not inchulet Hometiines the tip, brownish-yellow 2 Mostly bl.ick, the collar, pleura, and base of abdomen pale. Scutellum smooth, highly i)olished A. virginiensis. 2. Head black or fuscous. Scape, mandibles, and legs yellowish A. nigrickps. Anteris virginienais, sp. nov. S. Length, 1.20'""". Black, shining; head transverse; mesonotum very faintly punctate, in marked contrast to the highly polished scu- tellum; collar, pleura, and base of abdomen rufous or yellowish; man- dibles rufous. Antennje 12-joiuted, filiform ; scape as long as the first three flagellar joints united; pedicel small, round; first funiclar joint the longest, about twice as long as the second; the following joints about equal, longer than the second, but not quite as long as the first. Mesonotum with two distinct furrows. Scutellum semicircular, smooth, polished. Metathorax very short, polished, its x>osterior margin cari- nated. Legs, including coxae, honey-yellow. Wings hyaline, iridescent, the marginal vein thick, as long as the stigmal, the latter oblique, end- ing in a knob, the postmarginal about three times as long as the mar- ginal, the basal vein subobsolete. Abdomen long-oval, as long as the head and thorax together, smooth, polished, the first segment and the second, at base, striated ; the first segment is yellowish, the third the largest, about one-third h>nger than the second, or a little more than twice as long as the fourth. 21899— No. 45 15 226 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Habitat. — Virginia. Tyi^e in National Mnseum. Described from a single specimen taken by Mr. Theo. Pergande, Oc- tober 10, 1880. Anteris nigriceps, sp. nov. (Pl.x,Fig.2, 9.) S 9 . Length, 1.8 to 2.1"'"'. Head and thorax closely, minntely pniic- tate; three basal abdominal segments? striated. Head and abdomen black, the petiole and second segment at base, yellow, sometimes fus- cous or black ; mandibles pale, the teeth black ; thorax and legs brown- ish-yellow; in 9 the scutellum and metathorax fusccms or black, rarely so in S ; mesonotum with 2 furrows. Antenna} 12-jointed, black, the scape yellow, sometimes the pedicel in female yeHow; in the 2 the first funiclar jointislong, longer than the pedicel, the second scarcely half as long as the first, the third very slightly shorter than second, the fourth transverse, club long, fusiform ; in S filiform, the first funiclar joint about twice as long as the pedicel, the third shorter, emarginated at base, the second shorter than the third, the joints after the third oblong oval, about twice as long as thick. Wings hyaline or subhyaline; the mar- ginal vein jiunctiform or about twice as long as thick, the stigmal vein oblique, ending in a distinct rounded knob. Habitat. — Jacksonville, Fla., and Arlington, Va. Types in Coll. Ashmead. • ■ Described from several specimens. AFEOUS Forster. Hym. Stud., II, p. 101 (1856). (Type A. Jeptocerus Fiirst.) Head transverse quadrate or subquadrate, the occiput concave, mar- gined; ocelli 3, triangularly arranged, the lateral a little away from the marginof the eye; eyes large, oval, bare. ; .* Antennae inserted just above the clypeus, 12-jointed, filiform in both sexes. .. n Maxillary palpi 4-join ted; labial i)alpi .'i-jointed. Mandibles 3-dentate. Thorax long ovoid, the prothorax visible from above, especially later- ally; mesonotum with 2 distinct furrows, abbreviated anteriorly; scu- tellum short, with a row of punctures posteriorly; metathorax short, with the dorsum bicarinated. Front wings with the marginal vein usually longer than the stigmal, the postmarginal greatly lengthened, the stigmal oblique, with a slight knob at tip; basal vein wanting. Abdomen sessile, fusiforu). always much longer than the head and thorax together, all the segments lengthened, the second and third the longest, the first and second with lateral dorsal carinae. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 227 Legs rather long, the femora clavate, tibije long, subclavate, tibial spurs 1,1,1, distinct, the tarsi lengthened, slender, the basal joint more than thrice as long as the second. This genus is closely allied to Mavroteleiu, but is distinguished by filiform antenna; in both sexes. Apegus elongatus Ashin. Aniens elongafus Ashm., Ent. Am., Iii, p. 118; Cress. Syn. Hym., p. 314. S . Length, 4.5""". Elongate, linear, black; the head, thorax, and abdomen with round punctures, sparsely covered with a whitish pu- bescence; cheeks bulging, rugoso-puuctate. Mandibles 3-dentate, pale brown. Mesonotum with 2 furrows. Scutellum short, with a row of large punctures posteriorly. Metathorax coarsely furrowed, with two carinie on the disk and lateral keels. Antennji; 12-jointed, filiform, I)ale brownish yellow, the tips fuscous ; first funiclar joint a little longer than the pedicel ; second shorter; third slightly emarginated at base, the following, except the last, moniliform, scarcely longer than thick, the last longer than the penultimate. Legs brownisli-yellow, the pos- terior coxte a little dusky at base. Wings fusco-hyaline, the venatioii blown; the submarginal vein is very long, the marginal about twice as long as the stigmal, the postmarginal very long. Abdomen fully twice as long as the head and thorax united, punctate, segments 1, 2, and 3 dorsally towards sides, carinated, the second and fourth segments about equal, the third a little longer. Habitat.— Florida. > :• Type in Coll. Ashmead. HOPLOTELEIA Ashm., gen. nov. (Type ^./oritZawa Ashm.) Head transverse-quadrate, the cheeks margined, the face with a deep impression above the antennae; ocelli 3, in a triangle, the lateral close to the marcrin of the eye; eyes large, oval. Antennte inserted close to the mouth, 12-jointed in both sexes; in 9 clavate, in It occurs in all parts of the world and is particularly well represented in the South American and West Indian faunas, where no doubt it does good service in diminishing the number of Hemiptera to be found there. The several species found in the United States may be readily sepa- rated by the aid of the following table: ' ;^ TABLE OF SPECIES. Ti" ' Species very coarsely rngoso-pnnctate 2 Species smooth, at the most faintly jiunctate or shiigieeiied, sericeous. Coxte black or dusky, legs yellow, or pale hrowuish-yellow. Head and thorax shagreened, the scutellum finely punctate. Abdomen polished, the first and second segments faintly longitudinally aciculated, the second, without a row of punctures at base. H. LA.RGI, sp. nov. Head distinctly punctate, the thorax faintly punctate. Abdomen closely, finely punctate, the basal and apical edges of all the seg- ments smooth, polished, the first segment striate at base, the second with a row of striate punctures at base H. leptocokis.e How. Head and thorax closely, finely punotulate, opaque. Abdomen smoother, shining toward apex, the first and second segment stri- ated H. MY'RMECOl'HILUS, Sp. nOV. 2. CoxiP and legs brownish-yellow. Abdomen with coarse, longitudinal cribrate rugosities on all the segments, smooth and polished along the sutures H. Ruaosus How. MONOGRAPH OB" THE NORTH AMERICAN PROCTOTRYPID^. 231 Abdomeu cribrate rugose, the first segment with deep poarse striiP, the follow- ing 81 ')ther, the segmeuts not smooth along the sutures. H. FU)Rii)ANUS Ashm. Abdomen finely, evenly rugose, the first segment striate at base. i H, ANAS^ Ashm. CoxjB black, the legs brownish-yellow. Head and thorax rather coarsely rugose, the thorax and abdomen very finely rugoso-punctate, the luesonotum jWHteriorly slightly liueated; first abdouiiual segment and the second, at base only, striated. H. itCGiCEPS, sp. nov. Hadronotus largi, sp. nov. <5 9. Length, 0.80 to 1'""'. Black, opaque; head transverse, finely shagreened; mandibles, palpi, anteuual scape, apex of pedicel, and legs, honey- yellow; coxae slightly dusky. Antenna; 12-jointed, cLivate, brown-black, except as before mentioned; pedicel longer than the first funiclar joint; second and third funiclar joints not, or scarcely, longer than wide; the joints beyond all transverse. Thorax with fine wavy longitudinal rugap; scutellum almost smooth, the punctation being microscopic. Wings hyaline, the venation yellowish, the marginal vein short, scarcely half the length of the oblique stigmal vein. Abdomeu broadly oval, sessile, smooth, shining, the fii'st and second segments faintly longitudinally aciculated. In the S the antennae are filiform, honey-yellow, the pedicel longer than the first funiclar joint, the second funiclar small, the third en- larged, stout, the joints beyond transverse, twice as wide as long, subserrate, the last oval. Habitat. — Los Angeles, Oal. v ^ Types in National Museum. Described from several specimens bred by Mr. D. W. Coquillett, from the eggs of Largiis succinctus. ^. , Hadronotus leptocorisae How. • Hubbard's Orange Insects, App., p. 215; Ashm. Ent., Am. iii, p. 118; Cress. Syn. Hym., p. 314. 9 • Length, 1,4""" ; expanse, 2.5'""'. Head and thor.ax evenly covered with small round punctures, except in the facial impression, which is transversely striate ; an- tennae subclavate; lateral ocelli nearly touching the margins of the eyes. Mesono- tum a trifle smoother thsui the head, and furnished with a very fine white pubes- cence. First segment of the abdomeu dorsally longitudinally striate ; remaining seg- ments closely covered with fine round punctures; ventral surface sparsely punctate. Color brown; scape brown; all ooxse black; all trochanters, femora, tibiu), and tarsi light brown; mandibles and wing veins light brown. ^ . Length, 1.3""™ ; expanse, 2.8"'"'. Anteniue filiform. In other characters re- sembling the 9 . (Howard.) Habitat. — Crescent City, Fla. Types in National Museum. Bred by Mr. H. G. Hubbard from the eggs of Zelua hilohus Say, wrongly determined as the eggs of Leptocorim tipuloides. 232 BULLETIN 45, UKITED STATES NATIONAL MUSEUM. ■^•.-...'. . -: HadronotUB mymMcopbiliis, sp. nov. $ . Length, 1""". Head and thorax finely closely punctulate, opaque ; the apex of the abdomen smoother, shining, the two basal segments punctate and striate, the following almost smooth. Head very wide, the cheeks flat, delicately margined. Antennse 12-jointed, filiform, the scape yellowish, the flagellum dark-brown, thicker than the scape and pedicel; first flagellar joint the longest, longer than the pedicel, sec- ond, half the length of the first, a little contracted, third, very slightly longer, a little dilated outwardly toward one side; following joints scarcely as long as thick. Legs brownish-yellow, the coxa? black. Wings subfuscous, the marginal vein punctiform, not longer than thick, the stigmal oblique, the postmarginal very long. Habitat. — Arlington, Va. Type in Coll. Ashmead. This species was taken from an ant's nest. It differs decidedly from the other species in the sculpture of the head and thorax and in the smooth, apical abdominal segments. HadronotuB rugosus How. lusect Life, Vol. i, p. 242. 9. Length, 1.8""". Antenna- arise immediately above the mouth; scape reaches nearly to anterior ocellus ; pedicel suhcylindric, as lon<; as first funicle joint ; funicle joints increasing regularly in width from joint 1 to basal joint of club; joint 1 of funicle twice as long as 2, the remaining joints subecjual in length; joint 2 of club equal to joint 1; joint 3 longer than 2 and pointed. Head and face closely, deeply, and regularly punctate ; facial impression shallow, with transverse punctures and with a distinct, central longitudinal carina. Mesonotum strongly punctate, the punctures of the scutum assuming a longitudinal direction. Dorsal surface of ab- domen strongly longitudinally rugose, each joint smooth at extreme base, and apex, the rugosities strongest upon joint 1, growing slightly fainter on succeeding joints; joint 2 longest, joints 1 and 3 shorter; venter with well-marked circular punctures. Entire surface of body with sparse whitish pilositj-. (Jeneral color, black ; mouth parts, antenna;, and legs honey-yellow, except that the front coxfe, antennal club and pedicel, and first two funicle joints above are brownish. — (Hoicard.) Habitat. — Kockledge, Fla. .s -, Types in National Museum. Mr. Howard described this species from 3 9 specimens dissected from the supposed eggs of Dysdercus snturellusj sent to Dr. Eiley by Mr. H. S. Williams, April 1, 1889. The eggs appear to me to be those of Euthoctha galeator Fabr., with which I am quite familiar, from my long residence in Florida. Hadronotus floridanus Ashm. Ent. Am., in, p. 118; Cress. Syn. Hym., p. 314. S 9. Length, 1.5""". Head and thorax very coarsely rugose, the ab- domen cribrate rugose, the first segment with coarse striae; scape and legs brownish-yellow, the coxae sometimes brownish-black. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID.E. 233 AiitennaB 12jointed, in 5 clavate, the pedicel not longer than the first funiclar joint, the second fnniclar joint about half the length oi" the flrst, the third and following, transverse; in S filiform, pale brownish- yellow, the first funiclar joint the h)nge8t, longer than the pedicel, the second one third shorter than the first, the third slightly dilated toward one side at apex, the following a little longer than wide, the last poir.tcd, almost as long as tlie flrst funiclar. Wings hyaline, the venation yellowish, the marginal vein very short. Legs, including coxje, brownisli-yellow. Habitat. — Jacksonville and Cocoanut Grove, Fla. Types in Coll. Ashmead and l!fational Museum. Described from many specimens reared from the eggs of Metapodius femoratuH Fabr. This species is most closely allied to ff. rugosus Howard, bvit quite distinct in the sculpture of the abdomen. Hadronotus anasae Asbm, Telenomiu auaaai Ashm., Ball. No. 14 U. S. Dept. Agric, p.23; Cresa. Syn. Hym., P-314. $ 9 . Length, 1.2 "■". Black, coarsely, irregularly rugoso-punctate, witli a sparse whitish pubescence, the abdomen more evenly and less coarsely sculptured, somewhat lineated, the extreme apical edges of the segments smooth, polished, the first segment striate, the second a little longer than the first and the longest segment, the third a little shorter than the first. Head large and brojul, about 3J times as wide as thick antero-posteriorly, and wholly rugose. Antennjc 12 jointed, in 9 clavate, brown, the scape, pedicel, and sometimes the funiclar joints, yellow; the pedicel is one half longer than the first funi(!lar joint, the second funiclar shorter than the first, the third and fourth transverse, club acuminate towards apex; in S subftliform or subclavate, the pc'd- icel shorter than the first funiclar joint, the second and third subequal, shorter than the first; the following joints, except the last, which is ovate, are a little wider than long. Mandibles large, pale or yellowish. Wings hyaline, the marginal vein punctiform. Legs brownish-yellow, the coxjB sometimes dusky, more rarely black. Habitat. — Jacksonville, Fla. Types in National Museum and Coll. Ashmead. Described from many specimens reared by myself from the eggs of Andsa tristis De Geer. Dr. E. S. Turner reared, May 20, 1880, a large series from the same insect eggs at Fort George Island, Florida, and Miss Mary Murtfeldt reared August 2, 1882, a variety with black coxae at Kirkwood, Mo. Hadronotus rugiicepB, sp. nov. 9. Length, 1.5""". Head and scutellum rather coarsely but shal- lowly rugoso-punctate; the thorax and abdomen finely rugoso-punctate, 234 BULLETIN 45, UNITED STATES NATIONAL Ml'SEl'M. pubescent, the inesoiiotum .k little liiieated posteriorly. Head laif;e, wider than the thorax, the (cheeks nuirgined. Antenna* 12-jointed, dark-brown, the scape pale at base; tirst fnniclar joint slender, cylin- dric, scarcely longer than the pedicel, the latter pale at tip; second and third funidar joints short, quadrate; the fourth wider; club C- joiuted. Wings subfuscous, the marginal vein nearly as long as the stiginal. Legs brownish yellow, the coxje black. Abdomen oval, the first segment an. uov. (PI. IX. Fig. 6.) 9. Leiifftb 1""". Elongate, liifjhly polislied, black; abdomen, legs and antennae, except tbe clnb, brownisb or lioney-yellovv. Wings hya- line, narrow, strongly fringed. Olnb of antennic brown, 5-Jointed. Abdomen pointed fusiform, much longer than the head and thorax united, flat, or strongly depressed. Habitat. — Arlington, Va. Type in Cubescent. Mandibles rufous, the teeth and apex black. Antennae and legs reddish yellow. Mesouotum with two fur- rows. Wings subhyaline, fringed, the basal vein distinct, the marginal, twice as long as thick, the postmargiiml but slightly developed, the stigmal short, terminating in a little knob. Abdomen black, polished, pubescent toward tlie apex, the first and second segments striated. Habitat. — ArUngton, Va. Type in Coll. Ashmead. Described from a single specimen. 236 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. ACANTHOSCELIO Aslim., Ken. iiov. {Tyye A. nmericanuH.) Head largo, subqiiadnite. with a frontal le(l*;e as in Sparasion, the occiput rounded, niarjjfincd; ocelli li, in a triangle, the lateral not quite touching the margin of the eye; eyes very large, rounded. Antenna' as in SccJio. Maxilla.y i)alpi 3 jointed. Thorax ovoid, prothorax visible from above, only at the sides; trun- cate anteriorly; mesonotum convex, without furrows ; scutellum large, quadrate, the posterior margin slightly arcuately emarginate, the an- gles acute; postscutellum produced into a large erect spine; metano- tum short, abrupt, the angles prominent. Fnmt wings with the submarginal vein remote from the costa and curving and joining a punctiform marginal vein at about the middle of the wing; stigmal vein rather long, oblique, with a long radial branch, that forms a long, lanceolate marginal cell. Abdomen sessile, oblong-oval, depressed, strongly carinated along the sides and composed of 6 segments, the first and second nearly equal, the third the longest. Legs as in Sniio, the tibial spurs well developed. The affinities of this remarkable genus are with Seelio and Sparasion; it agrees with the former in all the essential characters, except in hav- ing a frontal ledge, the structure of the meso- and meta scutellum, and in venation; with the latter it agrees only in its cephalic characters. It is at once distinguished from both by the shape of the scutellum and the str(mg erect postscutellar spine, the shape of the scutellum being, indeed, unique in the family. The genus is founded upon a male specimen, collected by Mr. Her- bert Smith, at Chapada, in South America, and a female specimen in the Berlin Museum, labeled " Bogota." Acanthoscelio amerioanus sp. nov. "-:,:- : (PI. X, Fig. 6,,?.) $ . Length 3"™ Opaque, coarsely rugose; antenufe, post-scutel- lar spine, legs, except the black coxae, and the lateral margins of the abdomen, brownish-yellow; wings fuscou.^, yellowish-hyaline at base. Habitat. — Chapada, Brazil, South America. Type in Coll. Ashmead. Acanthoscelio flavipes, sp. nov. 9. Length, 3.4"»™. Black, coarsely, deeply punctate; antennae, except the 6-jointed club, the palpi, the legs, including coxae, metathorax, first abdominal segment and the lateral margins of the second and third, red- dish-yellow. Head subglobose, as wide as the thorax, with a frontal ridge, coarsely rugoso-punctate. Eyes very large, round. Mandibles MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPIDiE. 237 black, curved, with a tooth within. Antennae 12joiiit without a grooveil lino or only Hligbtly imliciited at tliu migH black, antt'i'ior and niiihlle tibiii* and all tar.si, honey-yellow, the posterior tiliiii' diiwky at tlic middle. Frontal It'dyo broad, on tlie same jjlanc with the vertex; poRtHcutellum toothed; pedicel a little ahortttr than tirst tla^ellar joint; tla^jellar jointH after the first only a littli^ longer than thick; Hca])ul:c iinpunctatc. S. piloxiim Ashni., sp. n of the nietathorax. Habitat. — Indiana and Fort George, Fla. Described from a single specimen taken by Dr. E. S. Turner at Fort George, Fla., and which I think without douDt is this long-lost species. Sparasion piloBiun sp. nov. (P1.X, Fig. 7, 9.) S 9 . Length, 4 to 5""". Black, shining, very pilose, head rugose from large, coarse punctures; the ledge very broad, on the same plane with the vertex, with a broad sulcus along the anterior margin. An- tenna; 12-jointed, black, the pedicel and first flagellar joint more or less piceous, the latter in 9 one-third longer than the pedicel, in S about equal, the joints beyond a little longer than thick. Thorax sparsely punctate, the parapsidal furrows distinct, the metathorax rugose, emar- ginate behind with a A-shaped carina, the angles slightly prominent. Wings fuscous, a little paler toward base, the venation black, the stigma quadrate, black. Legs black, the tibiae and tarsi, honey-yellow, the hind tibise dusky at the middle. Abdomen smooth, shining, longitudinally striate, more coarsely striate in the male. Habitat. — Nevada and Washington. Types in Coll. Ashmead. Described from two specimens. MONOCiBAPH OF TIIK NORTH AMElilCAN Ptf(JCToTBVPIl)^. 239 Sparasion nigrum, sp. no v. cJ 9 . L«Mi};tli, .'? to .{.5""". Very clos*^ to aV. piloHum, but (luite dis- tinct ill the very short frontal le(l<;(', and in its aiitonnal a(iue, rugose, the rugosities longi- tudinally directed; in 9 shining, i»un<-tate and striate. Habitat.— Pen Mar, Pa., and Oakland, Md. Types in Coll. Ashmead. Sparasion pacificum, Hp. nnv. ■ ■$. Length, 3 to 3.0""". Black, shining, with long, sparse hairs; legs brownish-yellow, pilose, the coxa' and femora black; head rugose, ante riorly with a broad s«!micireular ledge, margined anteriorly and with a curved carina at base, confoiining to the <'urve of the ledge. Anten- na' 12-Jointed, filiform, black, the pedicel and two basal joints of flagel him, brown or piceous; first flagellar joint in S twice the length of ped- icel, narrowe, in S 7 jointed. The segments after the first, which is short and campanulate, nearly of an equal length, the third usually the longest. Legs of moderate length; all femora and anterior tibije clavate, mid- dle and posterior tibite subclavate; the tibial spurs 1, 1, 1, distinct; basal joint of hind tarsi not more than thrice as long as the second ; claws simple. The peculiar venation, the short, 3 jointed maxillary palpi, the short, fusiform, subcompressed antenna*, and the male having but 10-jointed antenna) readily distinguish the genus. 21899— No. 45 16 242 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. ■ The parasitism of several of the species is known, and all are para- sites in locust eggs, belonging to the family Acridiidje. Some of the species bear a remarkably close resemblance to the Eiirytomin.T. in the family Chalcididse; and, this remarkable mimicry caused Dr. Riley to erect a new genus, Caloptenobia, in tliat family for the reception of a species of SceliOj reared by Mr. Samuel H. Scudder from the egg6 of a locust found in Massachusetts. TABLE OF SPECIES. Species with parapsidal furrows more or less distinct 8 Species without parapsidal furrows, coarsely reticulately rugose. Coxse aud legs pale brownish-yellow 2 Coxie black or brown-black ; rest of legs brownish-yellow. Wings fuscous with a stigmal vein and a radius. Scape and pedicel brownish-yellow, the Hagellum brown-black ; teguhe rufous. S. Fi'sciPENNis Ashm. Wings hyaline ; no stigmal vein and radius. 9 with the scape beneath pale; pedicel ^ longer than the first flagellar joint; second, third, and fourth flagellar joints very short transverse, the third a little the longest, 2^ times wider than long. ^ with the scape dark brown, flagellar joints, except first and last, about e([ual in length and width, the third scarcely wider than the fourth. S. IIYALINIPENNIS Ashui. 2. Stigma with a stigmal vein. Scape and pedicel yellowish, the flagellum brown-black, the first flagellar joint shorter than the pedicel. Venter distiuctly, coarsely striate, but not punctured 9 ; venter with oblong punctures, the surface acicnlated, antennie pale brownish, the third flagellar joint much wider than the others oor condition, reared by Samuel H. Scudder from the eggs of Dissosteira can Una. Scelio pallidipes, sp. nov. $ . Length, 3.2""". Head and thorax coarsely rugose, the latter without parapsid.al furrows. Anteuiiie brown-black, scape brownish, the third flagellar joint much wider than the others, twice as wide as long. Angles of raetathorax rounded, not prominent. Wings clear- hyaline, the submarginal vein and the stigma ^lyaline, scarcely appar- ent; no stigmal vein. Legs wholly brownish-yellow. Abdomen stri- ated, the first segment quadrate, separated from the second by a strong constriction ; venter distinctly, but not coarsely, striated. HABITAT. — Jacksonville, Fla. Types in Coll. Ashmead. The wholly brown-black flagellum and the difference in the metjitho- racic angles separate the species from S. pallidicornis, the only species with which it would be apt to be confused. Scelio pallidicornis, 8p. nov. $. Length, 4.1°"". Black, coarsely rugose; antenna? i^ale or brown- ish-yellow, the pedicel shorter than the first flagellar joint, the latter obconical and the longest joint; the third joint the widest, about H times as wide as long, or only slightly wider than the following joints. Angles of metathorax somewhat prominent, covered with a whitish pubescence. Wings subfuscous, hyaline at base, the stigma without a stigmal vein. Legs wholly brownish-yellow. Abdomen above coarsely striated, and with dilated punctures ; beneath smoother, shining, but longitudinally striated, the striae faint or indistinct beneath the lateral carina. Habitat. — Jacksonville, Fla. TyjMi in Coll. Ashmead. The large size, pale antenna', and color of wings at once separate the species from the others described here. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 245 Scelio cedipodee, sp. nov. $ 9 . Length, 3.5 to 4""". Black, rugose; scape, pedicel, and legs, except the coxie, brownish -yellow; thorax with parapsidal furrows distinct, in female wanting anteriorly; teguhe piceous; wings hyaline, the stigma reaching tlic costa; the stigmal vein wanting, or only slightly developed; metathorax truncate behind, the angles straight, not prominent; abdomen longer than the head and thorax united, striated; first segment well separated from the second by a strong con- striction, twice as wide as long. The antenna? in the male are brownish, the face vertically striated, the femora brownish, the tibiic and tarsi yellowish. Habitat. — Arlington, Va. Types in Coll. Ashmead. Described from 1 i and 2 9 specimens, reared from the eggs of a species of Oedipoda. The black coxje and the distinct parapsidal fur- rows at once separate the species from Scelio ovivorus liiley, and the grooved mesoncjtum from 8. hyaUnipennls Ashm., the rugosities being finer than in either of these species. Scelio opacuB Prov. ■ Acei'oia opaca Prov., Add. ct Corr., p. 184; Cress. Syn., p. 249. $ . Length, 3.25""". Black, opaque, with the feet red, more or less dusky. Head and thorax rugoso-i^unctate, the abdomen with the disks of the segments longitudinally aciculated. Wings hyaline. Abdomen sessile, the first segment being much narrower than the others. ( Prov.) Habitat. — Cap Rouge. Type in Coll. Provancher. Unknown to me. [Since this was written a male Scelio, labeled '■^Accrota opaca, Type, Provancher'', has been deposited in the National Museum by D. W. Co- quillett, of Los Angeles, Cal., and I have in consequence merely re- moved Provancher's brief description from the genus Acerota, in the subfamily Flaty y aster itm, to its proper place in Scelio, having had no time to draw up a full description.] Scelio rufiventris, sp. nov. - • ' 5 . Length, 3.5""". Brown-black, rugose, the abdomen mostly rufous, fuscous above, except along the sides; scape, pedicel, first funiclar joint, and the legs pale rufous. Thorax with distinct parapsidal furrows. Teguhe black. Wings hyaline, the stigma without a stigmal nervure. Funiclar joints after the first very transverse, three times as wide as long, the pedicel being as long as the first, second, and third funiclar joints united. Abdomen pointed-fusiform, longer than the head and 24G BULLETIN 45, UNITKD STATES NATIONAL MUSEUM. thorax together, shagreeiied, not distinctly striated, the venter smooth, wholly rufous ; dorsum with a rufous streak along the uuirgius. Habitat. — Fort George, Fla. Type in Coll. Ashmead. Described from a single specimen taken by Dr. 1'. S. Turner, in Au- gust, 1882. The color and sculpture of abdomen sufliciently distinguish the spe- cies. Scelio calopteni sp. iiov., Kiley. " 9 . Length, .') to HA""". Black, rugose; the mesonotum with faint but distinct furrows. Head with a smooth, shining space on face above the antennae, with striae on each side converging toward mouth ; man- dibles pale rufous; antenna* 12-jointed, brown-black, the scape and pedicel yellow; pedicel longer tlian the first funicular joint, the joints after the first very transverse; club slightly compressed from above, the joints closely conjoined. Thorax with the teguhe i)ale rufous; wings hyaline, the submargiiuil vein ending in a rounded stigma, but withcmt a stigmal vein ; legs, including the coxje, pale brownish-yellow. Metanotum with 2 coniidete longitudinal subparallel median carina\ Abdomen fusiform, longer than the head and thorax together, closely, hingitudinally aciculate; the venter piceous, finely aciculate at sides. "Described from many 9 specimens, bred June 27 and July 3, 1883, from the eggs of Caloptenus atlautis, collected by self and A. Koebele in ilJew Hampshire." — [From Kiley's MS.] Habitat. — Boscawen, N. H. Types ill National Museum. This species is closelj' allied to 8. Luggeri, and may be but a variety; but as the stigma is without a stigmal vein and the color of the anten- nae is slightly different, I believe it to be a distinct species. Scelio Luggeri sp. nov., Riley. " 9 . Length, 3 to 3.2""". Black, rugose, the mesonotum with two furrows; scape and legs, including coxa^, brownish-yellow. Head with the antennie brown-black, the pedicel distinctly longer than the first flagellar joint, joints 2 to 4 very short, transverse. Metanotum with 4 complete longitudinal median carinas; wings subfuscous, paler at base, the stigma with a short stigmal vein. Abdomen fusiform, about one- third longer than the head and thorax together; longitudinally acicu- late, the apex of all the segments with a smooth, polished space; venter black, aciculate over entire surface. "Described from three 9 specimens, reared in July, S9, from the eggs of a Caloptenus sp. by Prof. O. Lugger." — [From Kiiey's MS.) Habitat.— Otter Tail County, Minn. Types in National Museum. MONOGRAPH OF TIIK NORTH AMERICAN rROCTOTUYl'ID.E. 247 Scelio floridauus, h]>. ihiv. 9 . Length, 3 to3i"'". Densely bla<'k, snbopatjne, with rather coarse reticulated jjunctures, the thorax with distinct furrows, the postseu- telluni highly ridged. Antennae brown-black, the scape, legs, and mandibles, yellow; funiclar Joints transverse, the club large fusiform, wider than h)ng; angles of metatliorax prominent. Wings subhyaline, the venation yellowish, the submarginal vein ending in a shght stigma and an oblique stigmal vein, the latter with an indistinct radius. Abdomen fusiform, lineatedly rugose; tirst segment transverse-quad- rate of an equal length with the fifth, the second, longer, the third, the longest segment, the fourth shorter than third, the sixth, sub- equal with the fifth, the seventh much shorter; the venter polished, tlie segments striated towards apex. Habitat. — Haw Creek and Ja<;ksasiil atid median v»'iiis 4 Wings with hasiil and median veins. Mesonotum Avith 2 iaint furrows. Antenna^ Hubelavato moiiiliform, first fiuiielar joint very minnte, second somewhat larjjer, th(( following to 10th larger, gruSTAKHs, Falpi short, 2 jointed; labial palpi 1-jointed. Mandibles bifid at tips. Thorax oval, the prothorax slightly visible from above ; mesonotum wither without furrows ; scutellum gibbous, nearly round; metathorax short, rounded behind. Front wings ciliated, the submarj^inal vein ending in a knob a little before the middle of the wing. Abdomen long ovate, subsessile, subcouvex, and narrower than the thorax, the second segment very large, occupying most of the surface, the following segments all short. Legs slender, the femora subclavate, the tarsi 4jointed, the basal joint of hind tarsi about as long as all the others together. The 4-jointed tarsi, and the 9-jointed, nodose-pedicellate antenna; of the male readily distinguish the genus. 250 BULLKTIN jr., TNITKI) STATF.S NATIONAL Ml'SKlJM. IphetracbeluB americanus AhImii (PI. XI. Fig. 1, c?.) . Proc. Kilt. S..r. WuhIi., II, p, r.«, 1S90. i . Length, O.O""". IJlack, shining, delicately niicroscopieally punc- tate and faintly seiij-eon.s. Antennie and legs uniformly yellow. Antenna; nodose-pedicellate, with whorls ollong hairs; pedicel rounded; second funiclar joint trian- gular. Thorax somewhat flattened on the ilisk, without distinct fur- rows, although there are two shallow longitudinal furrows on the shoul- ders. Scutellum semicircular, subconvex, separated from the mesono- tum by a delicate transverse grooved line. Teguhe yellow. Wings hyaline, with a h)ng fringe at apex, the submarginal vein jmle yellow, knobbed at tip. Abdomen long, oval, snuM)th, polished and black, except the first segment, which is yellow. Habitat. — Arlington, Va. Type in Coll. Ashmead. Described from a single specimen, taken by sweeping. AI.LOTROPA Fr,rster. Hyin. Stud., II, p. KM) (1856). (Type .1. mecrida Walk.) Head transverse; ocelli 'i, the lateral rather close to the margin of the eye. Antennje inserted just above the clypeus, 9-jointed in both sexes, the flagellar joints in 3 dentate, verticillate; scape stout, fusiform, pedicel small, globose, in 9 clavate, ending in a 4-jointed club. Maxillary palpi 2-jointed ; labial jialpi 1 -jointed. Thorax ovoid, the mesonotum with 2 faint furrows; scutellum short, semicircular; metathorax short, the jiosterior angles subacute. Front wings pubescent, the submarginal vein short, ending in a knob. Abdomen long-ovate, convex, narrower than the thorax, the first segment short, broad, the second large, the following very short. Legs moderate, the femora clavate, tibiie and tarsi slender. This genus is distinguished at once from all the other genera in hav- ing 9-jointed antennae in both sexes. Allotropa americana Asbm. (PI. XI, Fig. 2, 9.) Can. Ent., xix, p. 125; Cress, Syn. Hym., p. 248. 9 . Length 1.4'"". Black, closely minutely punctulate; head trans- verse, opaque, the lateral ocelli twice their width from the margin of the eye; mandibles rufous; antennsB O-jointed, ending in a 4-jointed club, the joints serrate toward one side; 8ca|)e rufous; pedicel and MONOWKAPH OF TFIE NOKTH AMKKICAN PKOCTOTRYPID.K. 251 flap'lliiiu (lark brown; first jiinl sccoiul funicliir Joint aboti^ ('(juiil, the tliird triaiij^iilar or subtrianjjriilar. Thorax iiiit'ros«!0]>ira)ly ]mnctat(*, but shiiiiiigiii the mi(hlh',th(^ iiiesonotiuii with two0). (Ty\t(i M. areolata Hal.) Head transverse, broaenultimate; in S moniliform, incras- sated toward apex and longer than half the length of body; first flag- ellar joint minute; fcmrth, moderate, fifth, and following to the ninth, larger and broader, tenth, conical, much longer than the penultimate. Thorax short, ovate, finely scaly; pronotum short, scarcely visible from above; mesonotum with imlistinct furrows; s united; sixth shorter; in S the abdomen is scarcely longer than the thorax. Legs davate. This genus and Monocrita Fiirster are the only genera in the family having a distinct basal nervure, which alone is sutticient to distinguish them from all others. The- female in Metaclms is separated from Mono- crita by having a 3-jointed autennal club, the male by the smaller second funidar joint. But two species have been described. 252 niLLKTIN 45, TNITED STATKH NATIONAL MUSEUM. Metaclisis beloiiocnemae AhIiiii. (I'l. xr. Fijj. 3, 9.> Can. Knt., xix. ]». 12r>9 .— CroHM. Syii. Hym., )>. 248. 9, Li'iijfth, 1.")""". IMack, i>i»a(nie, cloHcly, finely i)unctate.. Lejxs and antenna', exi-ept the cliil), i>ale brownish yelh)w ; clftb biown black. Antenna^ 10-j()inteng as the tlunax, smooth, shining, exeept the first segment, which is a litth; roughened from some stria;. IIAKITAT. — Jacksonville, Fla. Type in Coll. Ashmead. This si>ecies was reared by myself from a Cynipid gall, Belonocnema treniiv JNIayr, and it is undoubtedly i)arasitic on a Cecidomyiid inhabit- ing tiie gall. Metaclisis erythropus, AHhin. C'iiu. Knt., XX, p. 51. $. Length, 2.5""". Black; head opaque, coarsely rugose on the vertex and cheeks; face transversely aciculated, with a central de- pressed line extending forward from the middle ocellus. Antenila; 10-join ted, black; pedicel as long as the second funiclar joint; first funiclar joint small, second swollen; club G jointed, the joints longer than wide, subpedi(!ellate, hairy, the last joint conical, longer than the preceding. Thoraxfmely reticulated, or scaly; parapsidal grooves dis- tinct, converging and meeting nt the base of the scutellum. ]\[eta- tliorax covered with a sericeous pubescence. Legs rufous, the coxse black. Abdomen black, polished. Wings subhyaline (i)robably tinged from the cyanide bottle), faintly jjubescent, the teguh'c lufo-piceous. Habitat. — Ottawa, Canada. Type in Coll. Ashmead. Described from a single specimen received from Mr. W. Hague Har- rington. MONOCRITA Forster. Hym. Stud., ii, p. 106 (1856) (Typo M. atinas Walk.) Head transverse, wider than the thorax; ocelli 3, in a triangle, the lateral as far from the front ocellus as to the eye margin. Autennie inserted just above the clypeus, 10-jointed in both sexes, MONOORAPFI OF THE NORTH AMERICAN I'ROCTOTRYPID.E 2o3 in 9 toriniiiiitin^ in a 4 jointed club, the scape slnuU'i, pedicel cyathi- forin, first tiiniclar joint small; in i with a (J-jointed tilitoiin clnh, the joints slij^iitly pedicellate, oval, tlie last Ion;; conical; the first tnniclar joint ahont twice as long as thick, the second stonter, obliquely truncate at tip and curved. Tiiorax short, ovoid, convex; prothorax very short; inesonotuni with distinct but deli«*ate furrows; scutelluiu convex; nietatliorax short. Front wings pubescent, ciliated, the subniarginal vein ending in a knob, the basal nervure distinct, and with a distinct basal cell. Abdomen ovate, convex, slightly shorter and narrower than the thorax; first segment small, the second very large, the third and fol- lowing very short. Legs clavate, the tibial spurs weak, the basal joint of hind tarsi twice the length of the second. The two species in our fauna may be thus distiuguislie*!: Legs black, the bead anil thorax microscopically shagreened. First and second abdominal scffnieiits not striated, the latter hairy at base. M. xiGKii'Es Ashm. Legs brownish-yellow, the head and thorax smooth, iiiii>nnctured. First abdominal segment and the second at bade striated, not hairy. M. CARINATA, sp. UOV. Monocrita uigripes Ashni. Bnll. No. 1, Col. Biol. Assoc., p. 8, 1890. S. Length, 1.80""". Black, subopaque, with a fine, granulated, or shagreened sculpture; the face above the insertion of the antenniB with some transverse acic^ilations. Antenuie lO-jointed, black, the rtagellum about twice the length of the scape, pedicel twice as long as thick, narrowed at base, the second joint minute, the third, slightly swollen outwardly, the following joints very slightly longer than wide, truncate at tips and rounded oil" at base, or cup-shaped, connected by a very short pedicel. Parapsidal grooves distinct, converging and almost meeting posteriorly. Scutellum high convex, with a deep, transverse depressi«)n across the base. ^lesopleura smooth, polished, with a curved impression across the disk; metapleura densely covered with a griseous pubescence; the metathorax and petiole more sparsely pubescent. Legs black, the knees slightly, anterior legs beneath, and all the tarsi, more or less piceous, or reddish. Abdomen highly polished, oblong oval, as long as the head and thorax together, the petiole not longer than wide, the second segment occupying fully three-fourths of its length, smooth, the following segments exceedingly short and about equal in length. Wings hyaline, pubescent, the submargiual and basal veins distinct, the former knobbed at tip. HabitA'i Greeley, Colo. Tyije in Cull. Ashmead. Nothing is known of the habits of this species, which was obtained from H. F. Wickliam. 254 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Monocrita cariiiata, .sp. nov. (I'l. XI, Fig. i, 9 .) 9. Length, 1.20'""'. Black, shilling, snbi)ubescent; head transverse, the face with a central longitudinal caiina extending from the front ocellus to between the base of antenn;e. Anteiiiiie lOjointed, the scape yellow, the Hagelluin brown and twice tlie length of the .scai)e; pedicel long-oval; joint 1 of funicle small, the second enlarged; club C-jointed, the joints, except the last transverse-quadrate, the last C()ne-shaped, slightly more than twice as long as the penultimate. Thorax with the parapsidal furrows delicately impressed posteriorly, obsolete anteriorly. iScutellum convex, smooth, with a carina surrounding the hind margin. Legs brownish-yellow, the feinr)ra and tibiie very slightly embrowned, the eoxie black. Teguhe piceous black. Wings subhyaluie, pubescent, the subraarginal vein brown, ending in a large rounded knob and with a distinct basal nervure. Abdomen oval, smooth, shining, the first seg- ment and the second at base, striated. Habitat. — District of Columbia. Type in Coll. Ashmead. Described from a single specimen, cai)tured by Mr. E. A. Schwarz, May o, 1890. ISOSTASIUS F.lrster. (Type Phttygaxter iiunct'nier Nees), Hyiii. Stud., II, p. 1(X) (185«). Head transverse, vertex subconvex, occiput not margined; ocelli 3, in a triangle, rather close together, the lateral distai.t from the mar- gin of the eye; eyes oval. Antenna' inserted Just above the clyi)eus, lOJointed in both sexes, in the 5 the 4 terminal joints forming a large club, the last joint of which is the largest; pedicel cyatijiform, nnich larger than the first funiclar joint; the four funidar joints are all small, moniliform; in $ with a a-jointed club. Thorax ovoid, the pnjthorax visible from above, nmnded befcne; mesouotum smooth or puictate, with or with(mt furrows; the scntellnm rather high, cusliionshape\vn, the scape davate, the i)cdicel longer and thicker than the first two fnniclar joints, the first and second fnniclar joints cylindric, nearly equal, the third and fourth small, transverse; club enlarged, 4 jointed, the joints quadrate. Thorax with scarcely a trace of furrows. Scutellum transverse, convex. Mesopleura acicu- lated. Legs brown, the coxfe black, the trochanters, base and apex of femora, and tibia; and all tarsi honey-yellow. Tegula' black. Wings hyaline, the submarginal vein terminating in a small, blai^k knob. Abdomen jminted ovate, polished, black, the basal segment rugose. Habitat. — Jacksonville, Fla. Type in Coll. Ashmead. Isostasius fuscipennis, sp. nov. 9. Length, 1""". Black, shining; head anteriorly faintly sha- greened, posteriorly transversely aciculated, the lateral ocelli about twice their width from the margin of the eye. Antennte brown-black. Thorax polished, with faint traces of furrows only posteriorly, the base of the middle lobe thus formed projecting slightly upon the scutellum ; mesopleura polished, impunctured, metapleura subopaque, sha- grcened; scutellum convex, shining, margined posteriorly with a tine whitish pubescence. Teguhv black. Wings fuscous. Legs piceous, the anterior femora, tibise, and tarsi, yellowish; middle and hind tarsi, pale rufous. Abdomen as long as the head and thorax, polished, the first seg- ment striated, the second, at base sulcate. Habitat. — Washington, D. C. Type in Coll. Ashmead. Described from a single si>ecimen, collected by Mr. E. A. Schwarz. Isostssius arietinus Prov. Afld.et Corr., p. 183. liaoneiira arielina, Prov., Add. et Corr., p. 403. $ . Long. 11 pee. Noir, avec la bonclie, le scape des antennes et les pattes, d'nn beau jauue-iuiel. T^te aussi large que le thorax, A. antennes fortes, le scape fort, arcine, jaune aiii.si que I'article qui Ic suit, le teste formaut une forte niassne brune recourbde en corne de bolier. Mesonotum a\ ec 3 sillons bien distincts. Ailes hya- lines, avec la sous-niarginale brune se term in ant dans un stigma grand et (^paissi qui donue naissance ^ un radius se dirigcaut vers le sommet de Tailc. Pattes jaunes, hauches noires. Al>doun"U sessile, i>o!i, l>rillant. droit, tarii-re non sortaute. La tete et le thorax sont trcs Hncment punctuf's et les 2 ocelles basilaires sout plus rap- proclics de l'sed with those in closely allied genera. TABLE OF SPECIES. FKMALES. Head finely nii(Tosco])ically punctate, the thorax smooth, Hhinmg 2 Head and thorax jmnctnlate or Khagreened, 8u)io[)a(jiie. Vertex impressed at the middle, Irons with a median furrow. Antenna- wholly hlack. All eoxa^ and femora blaek (femora sometimes piceons), tibia; and tarsi yellow- ish or brownish-yellow. Scapuhe with a distinct median impressed line; metapleura with silvery pubescence I. ckessom Ashni. Scapuhe without an imiiressed line; tibiie fuscous; metapleura sericeous I. UORNI Ashm. Vertex not impressed. Scape yellow. All coxa' black, club of femora fuscous, rest of the legs brownish-yellow. Scapulw without an impressed line, abdominal horn extending only to the middle of thorax I. packardi Ashm. 2. Vertex not impressed in the middle, frous without a median furrow. Antennae brown-black. CoxiP and legs dull rufous or piceous, trochanters, knees and tarsi pale. Metapleura finely striated, subsericeous I. kileyi Asbm. ' MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID/E. 257 Vertex impressed in the middle, frons with a medial furrow. CoxiB black, legs dull rufous, base of tibiaj and tarsi yellow. Metapleura very rough I. californica, sp. nov. Motapleura smoother, but delicately punctate, with a deep sulcus. I. LINTNEUJ, sp. nov. Inostemma Cressoni Ashm. (PI. XI, Fig. 6, 9.) Can. Ent., xix, p. 127 ; Cress. Syn. Hym., p. 249. 9 . Length, 2 to 2.2""". Black, subopaque, minutely puuctulate or sbagreened ; head transverse, the vertex at tlie middle and posteriorly impressed, the face with a median depression above the insertion of the antennae, the lateral ocelli touching the border of the eye. Antenna} black or brown-black, the extreme apex of the pedicel yellowish, first two funiclar joints slender, cylindrical, the third and fourth small; club 4-jointed, the second and third a little longer than wide, the last con- ical. Thorax with delicate but complete parapsides, the middle lobe a little concave at the middle for the reception of the abdominal horn, the scapulae with a longitudinal grooved line; mesopleura faintly acic- ulated, deeply foveated, the fovea extending from beneath the tegula? to between the middle and hind cox*, metapleura with a whitish or sil very pubescence. Legs black or piceous, the tibiae and tarsi pale brown or yellowish. Wings hyaline, the tegulae rufo piceous. Abdomen pol- ished, shining, longer than the head and thorax together, i)ointed and curving upward at tip, the horn long and extending forward over the thorax to the vertex of head, second ventral Segment with 2 aciculated sulci at base. Habitat. — Jacksonville, Fla. Type in Coll. Ashmead. InoBtemma Homi Ashm. Can. Ent., xix, p. 126; Cress. Syn. Hym., p. 249. S $ . Length, 1 to 1.4""'. Black, subopaque, closely, finely punctu- late, the thorax above lustrous; head transverse, the vertex impressed deeply at the middle, the face with a median impressed line. Antennae black, the pedicel and first two funiclar joints a little pale at tip, sub- equal, the third and fourth, minute; club 4-jointed, the second and third joints a little wider than long. Thorax with complete parapsidal furrows, the scapuliB most frequently without a trace of an impressed line; mesopleura polished, foveated but not aciculated; metapleura pubescent. Legs black or i>iceou8, the tarsi yellowish, the tibiae paler basally; wings hyaline, the teguhe black or piceous. Abdomen pol- ished black, as long as the head ami thorax together, the horn extend- ing over the thorax to the vertex of head, finely, longitudinally acicu- lated and much thicker at tip than at base ; first segment and second at base, striated. 21899— No. 45 17 258 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. In the i the tirst aud second funiclar joints are about equal, oval, the third small, the club 5-jointed, pubescent, the joints, except the last, not longer than wide, slightly pedicellate; lateral ocelli about their width from the eye margin ; while the second abdominal segment at base has two oblong, nearly confluent, finely punctate foveaj, the first segment with three grooved lines above. Habitat. — Ja(;ksouville, Fla. Types in Coll. Ashmead. Described from many specimens. Inostemma Packard! AHhm. Can. Ent., xix, p. 127; Cress. Syn. Hym., p. 249. 9 . Length, 1.4''"". Black, subopaque, closely, finely punctulate or shagreened. Head transverse, the vertex not impressed, the lateral ocelli not touching the margin of the eye. Antenute 10-jointed, brown- black, the scape yellowish, fuscous at the middle, the pedicel yellowish at tip; first two funiclar joints about equal, shorter than the scrape, third and fourth minute, club i-jointed, stout. Thorax shining, the parapsidal furrows very indistinct anteriorly, the scapulse without a distinct impressed line. Wings hyaline. Legs brownish-yellow, the coxa' black, the tliickened i>art of femora fuscous. Abdomen not longer than the head and thorax together, the horn not extending much be- yond the middle of the thorax, oblicjuely truncate at tip, basal segment and the second at extreme base finely striated. Habitat. — Jacksonville, Fla. Type in Coll. Ashmead. Described from a single specimen. Tlie short abdominal horn and the lateral ocelli not touching the margin of the eye readily separate the species. InoBtenima Rileyi Ashm. Can. Ent., xix, ]». 127; Cress. Syn. Hym., p. 249. S 9. Length, 0.5 to 0.8""". Black, polished; the head finely micro- scopically punctate, but shining, the vertex not impressed at the mid- dle; the frons convex without a median groove, the lateral ocelli not touching the margin of the eye. Antennae 10-jointed, dark brown, the apex of pedicel yellowish ; second funiclar joint subequal with the first, very little longer than thick, third and fourth minute; club 4-joiuted, stout, the joints, except the last, broader than long; in $ with a 5-joiated club, the joints a little longer than wide, slightly i)edicellate, hairy, the last conical; funiclar joints 1 and 2 very little longer than thick, the second obliquely truncate at tip, the third, small, subtriangular. Thorax with the parapsidal furrows indistinct or wanting, the scapuhe without a grooved line. Wings hyaline, the teguhe piceous black. Legs brownish-piceous, the trochanters, ba«e of tibise, and tarsi yel- lowish. Abdomen not longer than the head and thorax together, the MUNOGKAPH OF THE NOKTH AMEKICAN PROCTOTKYPIDJi:. 259 lioiii not extending over the vertex of the head; first segment and the extreme base of second striated. llAiUTAT. — ,Ia<*ksonville, Fhi. Type in Coll. Ashniead and Nath»nal Museum. Described from many speeiniens. « Inostemma californica, sp. nov. (J 2 . Length, 1 to 1. (>""'. Black, subopacjue, (dosely finely punctu- late, the mesonotuni less distinctly punctate, shining. Head transverse, the vertex at the middle posteriorly, impressed. Antenna' 10-joiuted, black, the scape one-third sliorter than tiie flagellum; pedicel longer than the first funiclar joint, first funiclar joint almost as long as the second and third together, second, third, and fourth joints all small, the last the smallest, club i-jointed, the* first the narrowest, second and third ([uadrate, the last conical, longer than the preceding. In i the club is 5-jointed, the fiagelluin nearly twice as h>ng as the scape, the pedicel as long as the first two funiclar joints, the third being minute. Thorax with "1 faint furrows. Mesopleura with a deej), glabrous impres- sion on the disk, extending to the middle coxa?. Metapleura finely rugose, witii raised lines. Teguhe rufo-piceous. Wings hyaline, not fringed, the submarginal vein with the knobbed tip, black. Legs pice- ous-black, the trochanters, anterior tibia' beneath and at tips, base of middle and posterior tibia\ and all tarsi i»ale brownish-yellow. Abdo- men slightly longer than the head and thorax together, pointed fusi- form, smooth and shining: tlie basal segment finely rugose, in $ with a large horn extending forw ird over the thorax to the vertex of head, finely longitudinally aciculated, and becoming distinctly striated at base; tlie second segnu'nt is long, slightly longer than the five follow- ing segments united, with a fovea and some faint stri;e at base. In the S the basal segment has no horn and is longitudinally striated. Habitat. — Los Angeles, Cal. Types in National Musium. Bred by A. Koebele, from a Cecidomyiid gall on Telypodium integ- rifoUnm. Inostemma Lintueri, sp. nov. 9 . Length, 1""". Black, polished, the head subopaque, closely mi- croscopically i)unctate, the vertex slightly impressed in the middle, the face with a nu'dian furrow, tlie lateral ocelli a little away from the margin of the eye. Antenna' lO-jointed, brown-black, the apex of I)edicel yeHowisli; first funiclar joint slender, more than twice longer than thick; second two-thitds the length of the first; third and fourth minute; club t jointed, the joints, except the last, a little wider than long. Thorax smooth, shining, with distinct furrows, the scapuhe with a faint trace of an impressed line; mesopleura jwdished fovea ted; meta- pleura finely delicately punctate with a deep sulcus. Wings hyaline. 260 BULLETIN If), UNITED STATES NATIONAL MUSEUM. Abdomen polished, the first segment and the second at extreme base, striated, the liorn extending forward to vertex of head. Legs brownisli- piceous, the ccixa; bhiek, the trochanters, base of tibiae and tarsd y«'l- lowish, the anterior tibia' being mostly yellow excei)t above at the middle. Habitat. — Washington, I). C. Type in Coll. Ashmead. ACEROTA Forster. Hym. Stud, ii, p. 107 (1856). (Type not described ) Head transverse, the vertex subcoiivex, the occiput margined; ocelli 3, in a curved line, the lateral distant from the margin of the eye, but slightly nearer to it than to the front ocellus; eyes rounded. Antennae inserted just above the dypeus, 10-jointed, in $ terminating in a 4-joiuted club, the pedicel longer than the first funidar Joint; in it from A. ceeidomyuc, while its subopaque, closely pun(;tulate vSnrface, the non-striated face, and the impressed lines on the middle lobe of the mesonotum separate it from A. Jloridmia and A. corya. Acerota caryae Asbni. (PLxi, Fig. 7, S.) Can Ent., xix, p. 128; Cress. Syn. Hym., p. 249. $ 9. Length, 1.5 to 2.1'""'. ^IwvhWk&A.meJanontropha; the thorax smoother and more shining, very faintly microscopically punctate; the head much as in melanostropha, but the face always with a deep median furrow; antennae, except the 4-jointed club, and the legs, except the posterior coxae, wholly brownish yellow; the second abdominal seg- ment finely striated at base above; the pedicel and first ami second funi- clar joints are long and slender, cylindrical, while the club joints, excejit the last, are transverse. Habitat.— Jacksonville, Fla. Types in Coll. Ash mead. Described from many specimens. The species varies in size, but is constant in the color of the legs and antennse. Tribe II. — Platygasterini. To this tribe belong all species with veinless wings. The genera are more numerous and much more difficult to separate than in the Ino- MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID.E. 2()3 steiuinini, but it is believed thv table below will be t'omid all that is necessary to (listiugnish tbem. If, however, tin; student should be at fault the full generic description may be consulted. TABLE OF GENERA. FEMAI.ES. Scntellnm not lengthened, semicircnlar, either flat or convex and unarmed 5 Sontelluni lengthened, never semicircnlar, or when .shortened it is compressed at side.s and furnished with an awl-shaped thorn or tn)»ercle at tip. 2 2. Scutellum with a strong awl-s!iai»ed thorn at tip 3 Scutellum with a short thorn or tubercle at tip 4 Scutellum lengthened, triangular, often produc^ed into a long, acute spine. Thorax strongly compressed from the sides. Head large, rounded, or (|uadrate Piestopleuka Forst. Thorax not strongly compressed from the sides. Mesonotal furrows deep, parallel posteriorly Xestonotus Fiirst. Mesonotal furrows feebly impressed or wanting A.mblyaspis Fiirsi. 3. Lateral ocelli nearer the margin of eye than to the apical ocellus; antennal club 4- jointed Leptacis Fiirst. Lateral ocelli not nearer the maigin of eye than to the apical ocellus; antennal club 3-)ointed Isorho-Mbis Fiirst. 4. Abdomen very much lengthened; anteuual club .^-jointed. Lateral ocelli as near to the front ocellus as to the margin of the eye ..Poi.ymecus Forst. Abdomen not especially lengthened; antennal club 4-jointed. Second ventral segment strongly compressed, sack-like; lateral ocelli their width from the eye margin Sactocjastek Fiirst. Second ventral segment normal; lateral ocelli close to the eye margin. Synopeas Fiirst. 5. Scutellum convex 6 Scutellum cupuliform as in the Cynipid genus Eucoila. CtELOPELTA Ashm., gen. nov. Scutellum not cupuliform, flattened. Mesonotal furrows wanting; antennsB 10-jointed, the club 4-jointed. Anopedias Fiirst. Mesonotal furrows usually distinct; antenna) 8-joiuted, club not jointed. Amitu.i Hald. 6. Scutellum with a tuft of hair at tip Triciiacis Fiirst. Scutellum without a tuft of hair at tip. Abdomen very much lengthened. (Polymecus.) Abdomen not much lengthened. Margin of abdomen very broadly dcflexed Hypocampsis Fiirst. Margin of abdomeil normal. Thorax short; the scutellum pillow-shaped, "separated from the mesonotum by a deep furrow; mesonotal furrows rarely distinct or complete. No keel between the antennte PoLYGNOTrs Fiirst. A sharp distinct keel between tiie antenna'. Eritrissomerps Ashm., gen. nov. _:^ Thorax more elongate; scutellum not separated from the mescmotum by a deep furrow. Mesonotal furrows distinct, complete. Lateral ocelli nearer the margin of the eye than to the apical ocellus ; head transverse Platygaster Latreille Lateral ocelli nearer to the apical ocellus than to the margin of the eye; head cubital Isocybus Furst. 264 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. MAI.KS. Scutelliiiii not Icn^theneii, sL'tuioirculiir, either flat, convex or cnpuliforni, and unaniieil 5 Sciitelluni lengthened, never Heiuicirciihir, or when shorteneil it is compressed at sides and fnrnished with an awlshaped thorn or tnliercle at tip . 2 2. Scntellnni with a stronj^ awl-shaped thorn at tip 3 Seiitellnin with a short thorn or tnhcrcle at tip 4 Scntellnni .'engthened, triangular, often jaoduced into a long, aiiite spine. Thorax strongly <(nupressc//«» Ftirst. Im-. rit.,]). 107. (Type 1'. tutiUu8 Walk.) (PI. XI, Fig. 8, 9.) Head larpe, rounded, twice the bre.adth of the thorax, the oeeipnt margined; ocelli 3, in a triangle, the lateral close to the margin of the eye. Antennae inserted just above the clypens, 10-jointed in 9 , with a 4-jointed club, the pedicel much larger than the funiclar joints, the club joints transverse; in i the tirst and t'-iird funiclar joints are much thick- ened, about as thick as the pedicel, the second, as long as the two i)re- ceding together, spindle-shaped, not especially thickened, club 4-jointed, the joints long, cylindrie, slightly pedicellate, pilose. Thorax strongly compressed, 2J times as long as Avide and liighly convex, higher than wide, mesonotal furrows but slightly impressed, obsolete anteriorly, scutellum with a spine or small thorn. Front wings pubescent, ciliated, entirely veinless. Abdomen long-ovate, 6-jointed and more pointed at apex in the 9 , 7-jointed and rounded at apex in S , the second segment very long, occupying fully more than half the whole surface. Legs clavate. In the shape of the head and the strongly compressed thorax this genus is quite distinct from those that follow. Piestopleura maculipes Ashiu. Can. Ent., XIX, p. 128 9 (CaHllus): Cress. Syn. Hym., p. 249. 5. Length, 0.8""". Polished black; antenna' jind legs, rufous; club of antennae 4-jointed, black or brown-black ; pedicel long; funiclar joints small. Head much wider than the thorax. Thorax with indications of furrows posteriorly. Scutellum ending in a small si)ine, subpubes- cent. Metathorax very short, pubescent, with a prominent median keel. Abdomen about as long as the head and thorax together, oblong, the petiole striated, subpubesceut. Wings hyaline. Habitat. — Jacksonville, Fla. Type iu Coll. Ashmead. XESTONOTUS Forster, Hym. Sttid., II, p. 107 (1856). _^ (Type A", rcfiiiijcns Forst.) Head transverse, the occiput margined, the face subconvex; ocelli 3, triangularly arranged, the lateral nearer to the margin of the eye thau to the front ocellus ; eyes oval. 2G6 BULLETIN 45, UNITED STATES NATIONAL MUSEUM, Antennre inserted Just above tlie rlypens, 10 jointod in 9 , with all tho joints U'lijjtluMUMl and thickrnod toward the iipi'x, without a ilistinct club; in S the first tiajjelhir joint very snnill, the slm-ou*! very much thickened, the third the length atul tliicknesa of the pedicel, the Ave following joints cylindrical and slightly pedi<'ellate. Thorax ovate, the niesonotUTU with 2 distinct furrows, the scutellum triangularly lengthened, acute. . Front wings veiidess. Abdomen long ovate, the second segment very large, the following short, the first short, narrowed; in 9 segments A and ♦> unitei{v, tlic ba.sal Jt)int of liiiul tarsi tliiee tiiiieK as lon^ as tlic second. As here detined, this genus ia divisible into two seetions by the slnipe ol" the scutelhini; in one section the siutelhini is trianjjfiihir, not produced into a h>n;j acute spine; in the other tin* sJuteUnin is pro-, duced into a long- acute spine projectinj; tar over the nielanotum, iind it seems to couii)rise sjK'eies that by some authors are included in the jrenus Lcptacix. But LeptaciH, as understood by nu', is (piiteditlcrent, the scutellum beingf produced into a short curved spine or tubercle, and, as detined in this work, agrees more nearly with the ^i uus Cvrutavin Thomson. TABLE OF SPECIES. KKMAI.ES. Scutellum not or faintly pubescent, the apex produced into .in .acute spine 2 Scutellum covered with a short dense pubesceuce. apex not i)roduced into nu acute Hjdue, triangular. Legs brown, trochanters, base of tibi.i-, and tarsi honey-yellow; antennie dark brown, wings with a short fringe. A. ocriDKNTALis, sp. nov. Legs brownish yellow; .antennie dark brown, scape pale beneath at base; wings with a long fringe A.CALiFoitNici'S, sp. nov. Legs and antenna' pale yellow, the flagellnm brown ; wings with a short fringe ; petiole i»ale A. pi.tiolatis, sp. nov. 2. Spine of scntellum long, extending far over the metathorax, yellow; wings with long cilia-. Legs reddish-yellow, tips of posterior femora and tibia> brown; tibial spurs sliort ; petiole black, pube.scent A. americanI's Ashni. Legs uuifonuly reddish-yellow or yellow; legs not especially lengthened, the hind t, UNITED STATES NATIONAL MUSEUM. Amblyaspia lougipes Asbin. (PI. XI, Fig. 10, c?.) Cau. Eut., XIX, p. 128; Cress. Syn. Ilym., p. 249. S. Length, 2""". Polished bhick, irapunctured; scape and legs pale brownish-yellow or yellow; tlagellum brownish-black, pilose; funicle very long and slender, as long as the long scape, the first and last joints short, the second greatly elongated; club 5-jointed, the joints all long, 5 or C times as long as thick, subclavate. Head trans- verse, the vertex bounded behind by a delicate transverse carina; lateral ocelli close to the eye margin; face flat, smooth; mandibl#8 pale. Thorax long, convex, without furrows; scutellum very long, produced into a long, acute, yellow spine, its tip extending over the baseof the abdomen; two large pubescent foveie on either side at base; metathorax pubescent. TeguLe black. Wings hyaline. Legs very long, the hind pair especially long, honey-jellow, tibial spurs- distinct, the tarsi very long, slender. Abdomen oval, the petiole about twice as long as thick, striated, pubescent above and beneath, body of al lo- men pubescent at base beneath. Habitat. — Jacksonville, Fla. Type in Coll. Ashmead. LEPTACIS Furster. Hym. Stud, ii, p. 107. (1856.) (Type L. tipuhv Kirby.) Ceratacia Thonis. Ofvers, 1858, p. 69. Head transverse, the frons subconvex, the occiput straight, mar- gined; ocelli 3, subtriangularly arranged, the lateral nearer to the eye than to the front ocellus; eyes oval. Antenna* inserted just above the clypeus, 10-jointed in both sexes; in 9 terminating in a l-jointed club, the jiedicel much l«)nger than thick, funiclar joints 1, 3, and 4 very small, short, the second lengthened; in (5 ending in a .l-jointed club, the joints of which are usually elongate; joint 1 of funicle small, the second elongate, somewhat swollen, the third smaller. Thorax ovoid, highly convex, the ])rothorax visible as an arcuate line, the mesonotum with or without furrows, the scutellum subtrian- gular, convex at the middle, depresvsed and with two large transverse or oblique fovete at base, the apex armed with a more or less curved thorn, rarely reduced to a tubercle, the metathorax short, the nieta- pleura usually covered with a dense silvery, or hoary, pubescence. Front wings long, pubescent, and veinless. Abdomen in 9 point<)d-ovate, in S oval or long ovate, the first seg- ment wider than long, the second very long, occupying most of the surface, the following all short. Legs clavate, the basal joint of hind tarsi three or more times longer than the second. MONOGKAPU OF THE NORTH AMERICAN PliOCTOTKYl'ID.E. 271 This geuus ami Amblyaspi>i are often coufused together. If iu my detiuitioii of AmbbiuspiH I have inchided both Leptaris and Amblyaispitf^ theu thiiS geuus must be kiiowu as Ceratavis Thomson. TABLE OF SPECIES. FEMALES, Mesonotal furrows ■wanting or only iiuUcuted iiosteriorly 2 MesoUotal furrows completi', disstinct. Head rugose, the thorax miiiiitt'ly jtiiuctatc, a distinct line on shoulders. Anteuuuj aud front legs browuisb-yellow, club brown black. L. uudicEi'S, 3]>. nov. Legs brownish-piceons, the trochanters, base of tibia' aud tarsi buney-yellow. Head closely, finely punctate, the thorax minutely punctate, no line on shoulders. Antennae brownish-yellow, club brown L. rrNiTATU.s. sp. nov. Antenna' wholly brown-black L. klokidants, sp. nov. 2. Frons smooth or micro8coi)icallj' punctate 3 Frons transversely striat«'d; thorax smooth. Antenna; aud lej; 'jwuisU-ycUow or i)alo rufons, clul» brown. L. s riuATiFUoxs, sp. nov. 3. Frons microscopically punctate 4 Frous smooth; coxa' black. Abdomen twice the length of thorax, subcompressed. L. LONGIVENTKl!?, sp. nov. Abdomen not longer than the thorax, not compressed. L. UKEVIVENTKIS, Sp. DOV. 4. Coxa' black. Legs black or brownish- piceims, trochanters, knees, tij)s of tibia-, and tarsi yellow L. cvNii'iPiaLUS Ashm. Coxas brownish-yellow; legs aud anteaniu, except club, yellow. L. i-LAVicoKXis, sp. nov. MALES.' Mesonotal furrows wanting or only indicated posteriorly 2 Ml sonotal furrows distinct, com))lete. Head rugose, thorax minutely punctiite L. ulgiceps, sp. nov. Head iinely X)unctate, thorax minutely punctate. Antenna' and the middle legs brownish-yellow, the Iriud legs brownish- l)iceou8 L. I'lNCTATis, sp. nov. Head and thorax smooth, shining, the parapsidal furrows delicate. Antenna' black; legs, except trochaut^-TS and tarsi, fuscous. L. I'LOHiDAXL'.s, sp. nov. 2. Frons smooth; coxa' black. Legs brown isli-])iceous. Seapo and funicle brownish-yellow, the second funielar joint swollen. L. IJKKVIVEN'IHIS, sp. nov. Legs brownish-yellow or yellow. Flagellum brown-black, the club joints 2^ or 3 times as long as thick, much narrowed basally L- cynu'H'IIIUS Ashm. * Flagellum yellow, the ulub joints twice as long as thick, cylindric. L. KLAVIK)«M8, sp. nov. Frons distinctly punctate. Scape, pedicel, and legs ,ellow L. rrxcTicEP.-*, sp.nov. Frons micro8coi)ically ])uuctate; coxie black. Auteume .•ind legs, except anterior tibia' and tarsi, which are lioney-yellow, browuish-piceous or fuscous L. itue.s*. ens, sp. uov. 272 BULLETIN 15, INITED' STATES NATIONAL MUSEUM. Leptacls lugiceps, sp. iiov. "(I'L XII, Fig. 1, ?.) S 9 . Length, 1 to l.U " '. Black; anteniue, except club, front legs, am\ base of middle tWnn- and all tarsi, yellow ; rest of the legs tuscous or black. Head transverse, opaque, the Irons and face rugose, thelatenU ocelli close to the eye. Auteniue 10 jointed, the club 4-jointed, black, the joints, except the last, which is conical and about twice as long as the preceding, are scarcely longer than thick. Thorax subopaque, minutely i)unctate, with 2 distinct furrows, and a distinct grooved line on the shoulders. Scutelluni pubescent, with 2 large fovcic at base, a slight median carina, and terminating in a long awl-shaped spine or thorn. Metathorax very short, with a median carina and covered with a silvery pubescence. Wings hyaline. Abdomen oval, shorter than thorax, polished, the petiole wider than long, rugose, densely pubei^( ^nt. In the S the scape and funicle are brownish yellow, the 4-joiuted club brown black; the pedicel is very long and slender, almost as long as all the funiclar joints united, last two funiclar joints short, not longer than thick; club joints, except the last, quadrate. Habitat. — Jacksonville, Fla., and Arlington, Va. Types in Coll. Ashmead. Described from several specimens. Leptacls punctatus, Bp. nov, S 9 . Length, O.s to 1 "". Black, subopaque, closely, minutely punctate, the thorax smoother; parapsidal furrows delicate but com- plete; no grooved line on the shoulders; antenna^, except club, and legs, yellow; middle and post'^rior legs more or less fuscous, or brown; club 4-jointed, brown-black, the joints, except the last, wider than long, the last conic, Ih times as long as the penultimate; funicle slender. Scutellum with two large fove.e at base, pubescent, ending in a slightly curved, awl shai)ed spine. Metathorax and petiole densely pubescent. Abdomen oval, polished, shorter than the tln>rax. Haijitat. — Florida, District of Columbia, and Virginia. 'i'ypcs in Coll. Ashmead. Common. Allied to L. rugicepH, but smaller, more evenly punctate, and the head not so rugose. Leptacls floridanus, sp. nov. $ 9 . Length, 1.1 "". Black, subopaque, faintly, microscopically punctulate, the tliorax almost smooth, with two distinct furrows; an- teinue wholly brown-black, the club joints twice as long as thick, loosely joined. Scutellum foveated at base, the awl-shaped spine rather short. Metathorax witli a silvi'ry iiubescence. Wings hyaline. Legs lyown or fuscous, the trochanters, base of tibiie, and tarsi yeUowish. Abdo- men ovate, not quite as long as the thorax, the petiole very short, transverse, densely covered with a silvery white pubescence. Haihtat. — Jacksonville, Fla. Types in Coll. Ashmead. MONOGKAPH OF THE NORTH AMERICAN PROCTOTRYPIDiE. 273 Leptacis striatifrons, sp. uuv. 9 . Length, 1 .2" "". Black, shining ; frons transversely striated ; thorax smootl, with indications of furrows posteriorly; antennae, except the club, and legs wholly brownish-yellow; club 4-joiuted, brown, the joints (except the conical last joint) not, or scarcely, longer than thick. Scutelluni bifoveated at base and ending in a long awl-shaped thorn Metathorax covered with a dense white ]>ubescencc. Wings hyaline. Abdomen subovate, shorter than the thorax, black, polished, impunc- tured, the petiole very short, transverse, pubescent. Habitat. — Jacksonville, Fla. Type in Coll. Ashmead. Leptacis longiveutris, s{>. iiov. S 9. Length, 1"""'. Polished black, impunctured; tarsi rufo-piceons. Head as wide as the thorax from teguhc to teguhe. Mandibles black. Antennne 10-jointed, in 9 with a 4-joiuted club, the joints, except the last, a little wider than h)ng, the last conical, twice as long as the pre- ceding; funicle slender, the second joint long and slender, the first and last two, short. Thorax without distinct furrows, a slight elevation or prominence just in front of the scutelluni, and with a sparce pubescence on either side. Mesopleura smooth, polished. Scutelluni with a tu- bercle at tip, two oblique depressions at base, a median carina, and sparsely covered with a silvery i^ile. Metathorax at base, nietapleura, and base of abdomen densely covered with a silvery x>'ibescence. Tegula» black. Wings hyaline, iridescent, but slightly ])ubescent and without a distinct fringe. Abdomen pointed-ovate, twice the length of the thorax, subcompressed, and in shape not unlike the 9 in Eury- fowj«, but with the lateral carina quite distinct; the first segment is densely imbescent, the second occupies most of the surface, the third, fourth, fifth, and sixth very short, equal, the seventh conical, as long or a little longer than the four preceding together. in the $ the anteniue aiC bristly, the pedicel oval, the first funiclar joint minute, rounded, the second, longer than the pedicel, swollen and a little curved, the club jointed, the first joint oval, about half the length of the second; joints 2-.") long oval, the last cone-shajied, one- third longer than the preceding and thinner. Tip of anterior tibiae and tarsi dark honey -yellow. Abdomen oblong-oval, depressed. Habitat. — District of Columbia and Virginia. Types in Coll. Ashmead an«l *!i^ational Museum. Many specimens. The peculiar shape of the abdomen and the cari- nated scutellum readily distinguish the species. 7 Leptacis breviventris, 8p. uov. ~ i 9 . Length, 0.6.5 to 0.80""". Black, shining, impunctured; the face very slightly shagreened just above the insertion of the antennae; lat- 21899— iS^o. 45 18 274 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. eral ocelli close to the border of the eye; iiiiteiiiue and legs brown, the trochanters, base of tibia', and tarsi yellowish; anterior and middle legs sometimes yellowish. Antennie 10-jointed, in 9 with a 4 Jointed club, the joints, except the last, not longer than wide, usually wider than long, the last ovate; funide slender, joints 1, ,3, and 4 small, joint 2 elongate; in S with a 4-joiiited chil>, the joints slightly pedicellate and covered with sparse white hairs; second fnniclar joint swollen, longer than the pedicel; first fnniclar joint very small, closely joined to the second; joints 3 and 4 small. Thorax convex, poh shed, without fur- rows; scutellum foveated at base, pubescent at sides, and terminating in a tubercle or very short spine, which is only twice as long as thick; metapleura covered with a dense white jiubesceuce. Abdomen broadly oval, highly polished, black, a little shorter than the thorax, the petiole very short and transverse, pubescent. Habitat. — District of Columbia, Virginia, and Maryland. Types in Coll. Ashmead. Described from several specimens. Iieptacis cynipiphilus . Asbm., Can. Ent., xix. p. 129, 9 etiole with a silvery white pubescence. The autenme in the 9 end in a 4-jointed club, the joints of which, except the last, are not longer than wide; the funicle is slender, the second joint a little longer than the first, the third and fourth being small; in 9 the antenuic are entirely yellow; the chib 5 jointed, the joints, except the last, being only a little longer than wide; the last being conical, twice as hmg as the preceding; the first funiclar joint is small, closely joined to the second, the latter longer than the pedicel and slightly thickened, the third small, contracted. Wings hyaline. Abdomen oval, shorter than the thorax, i>ubescent at base. Habitat. — Washington, 1). 0., and Jacksonville, Fla. Types in Coll. Ashmead. Leptacis pubescens, sp. nov. $ . Length, Lo'""". Black, shining, covered with a fine pubescence; scape and legs, except the anterior tibiie and tarsi, which are honey-yel- low, dark brown or i)iceous; tlagellum black, the club joints pedicellate, pilose, the first funiclar joint a little shorter than the jjedicel, the sec- ond long, fully twice as long as the pedicel, the third small, the first 4 joints of club twice as long as thick, the last three times as long as thick. Thorax without furrows; the scutellum ends in a short tubercle and is foveate at base, the metathorax densely pubescent. Wings hyaline, the teguhe black. Abdomen oblong-oval, the petiole wider than long, elevated above. Habitat.— District of Columbia. Type in Coll. Ashmead. Described from a single specimen taJ^eu by Mr. E. A. Bchwarz. 276 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. ISORHOMBUS Fiirst.'i. Hym. Stu. jointed chd), in S with a 5 jointed elnb, the .joints of which are longer than thi<'k. the first fnniclar joint very niinnte. Thorax ovate, the i>rothorax distinct, the niesouotuin much longer than wide, with furrows, the scutellum subconical or subpyramidal, «'ud- ing in a little spine at tip, and more or less pubescent, the metathorax short, with a median carina. Wings when folded extending to, or a little bevond, the tip of the abdomen, pubescent and veinless. Abd<>men long, in $ pointed ovate, in S oblong-oval, the first seg- ment longer than wide, the second very large, occupying fully two- thirds of the whole surface. Legs clavate, the basaljiiint of hind tarsi twice as long as the second. Distinguished by the 3 jointed club in the female, the shape of the scutellum, the long mesonotum, and the position of the ocelli. Isorhombus hyalinipeunis Ashm. (PI. xii, 2,J.) Can. Eut., xix, ji. 11*9 ; Cress. Syn. Hym., p. 249. 5. Length, 1.5""". Black, shining, impnnctured, the occiput alone finely transversely aciculated; antenna", excejtt the 3-jointed club and legs, brownish-yellow or yellow; the coxa' and club black. Head trans- verse, the lateral ocelli about their width from the border of the eye, the mandibles and i)alpi pale (»r yeHowish. Antenna; lO-.iointed; scape subdavate, as long as the pedicel and funide united; i>edicel not quite as long as the first and second fnniclar joints united; second fnniclar joint very little longer than the first; third and fourth small, transverse; fifth much wider, transverse; club 3-jointed, black, the joints loosely joined, the first two subcjuadrate, very slightly serrate toward one side at apex, last joint oblong. Tho- rax convex, without furrows or oidy slightly indicated i>osteriorly, the little lobe thus formed i)ro.jectiug slightly upon the scutellum. Scu- tellum subconvex, foveated at base and with oidy a slight tubercle at tip, the tubercle being subobsolete. Metathorax and petiole subpu- bescent. Wings hyaline. Abdomen ovate, depressed, polished, im- punctured, the petiole scarcely as long as wide. S. Length,!"". Differs only in tho antemue, the club being 5-, jointed, pale, the first and third fnniclar joints small, the second being stouter and about thrice as long as thick. Habitat. — Jacksonville, Fla. Types in Coll. Ashmead. MONOGRAPH OF THK NOHTII AMERICAN PKOCToTUYPIDiE. 277 IsorhombuB arizoneiisis. sp. imv. 5. Lenjjtli, -""". Black, highly polished; i>avapsi(lal furrows ob- Roletci anteriorly. Head very wide, not very thick a ntero posteriorly, the lateral ocelli I'ar away from the margin of the eye. Mandibles j>iceous. Antenna! lOjointed, rnfo-j)iceon8, the Hagellnm twice the length of tlio scape; pedicel a little longer than thick; Joint 1 of funi- cle very minnte, closely Joined to the secojid, secasal Joint of hind tarsi not (|uite twi«'e the length oi" the second. The very long, i>ointeedicel P. a^ikricants Aslnn. 2. Femora black or brown black, tibia- and tarsi rnfons. Fifth abdominal segment mnch longer than the last P. nigrifemir Aslim. Fifth abdominal segment shorter than the last P. vancouverexsis. sp. n. Legs i>iceons, anterior tibia', base of middle and posterior tibite and all tarsi houey- yellow; antennie black. First funiclar joint contracted, not longer than thick, collar not striate at sides P. LiriNicoLA, sp. nov. First fnniclar joint longer than thick ; collar striate at sides. P. picipes, sp. nov. Legs brownish-yellow; second funiclar joint about half the length of the pedicel P. PALUPES Ashm. Legs honey-yellow ; scape and the pedicel at tip, yellow. P. melliscapus, sp. nov. 3. Abdomen 21 times as lonir as the li ad and thorax together; very strongly de- pressed, when viewed fn ni the side cultriform. Coxa' piceous; legs bright yeliow P. compressiventris, sp. nov. Abdomen H times as long as the head and thorax together, not depressed. Coxjt and legs, yellow P. auripes, sp. nov. Coxie black ; tip of anterior femora and tibia', base of middle andiiosterior tibia; and all tarsi, honey-yellow P. alnicola, sp. nov. Polymecus canadensis Ashm. Ectadiua cnnadensh Ashm., Can. Ent., xx, p. .51. 9. Length, 3""". Polished black; the head poste .iorly very finely shagreened and delicately transversely striated; lateral ocelli about twice their width from the eye ; face jwlished, impunctured. The front ocellus with a transverse furrow at base before ; mandibles black. Anten- nae 10-jointed, brown black, the scape tinged with rufous ; pedicel as long as the second funiclar joint but not so thick; first funiclar joint small; club 6-jointed, the first two joints a little more slender than the following, the first, a little longer than the second; joints 3, 4, and 5 about equal in length, 1^ times longer than thick, the upper, outer angle of each MONOGRAPH OK THE NORTH AMERICAN PROCTOTRYPIDiE. 279 joint very acute, the last joint i'onicul, longer than the preceding. Mesonotuni with two distinct furrows. Metathorax, including the jjleura and the tirst abdominal segment, hoth ahove and beneath, densely im- bes<'ent. Tegula* rutb-pi«'eous. AVings clear hyaline. Legs rufous, the i)08terior coxa* basally i)iceous. Abdomen greatly elongated, more than twice the length of tlu^ head an. 1, Col. Biol. Assoc, p. 9, 1890. 2 . Length, 2.6'"'". Black, snbopaque, fln. Types 5 9,3 i specimens in Coll. Ashmead. Obtained tlirough II. F. AVickham. Polymecus lugrlfemur Ashm. Ectadiun Higrifmnur Ashiu., l'>ull. No. 1, Col. Hiol. Assoc, p. 10. ?. Length, 3 to 3.2'"'". Black; sculptured as in previous species, except that the face is not so smooth. Antennje wholly black, the pedicel about twice as long as thick ; otherwise the joints are similar to paJUpes. All coxa' and femora black, the tibisc and tarsi, reddish; sometimes the anterior femora are also red, but usually they are piceous or obscured above; the tibiie, too, are sometimes more or less dusky. Abdomen more than twice longer than the head and thoi-ax combined, the petiole being more pubescent than usual, the sides being almost as densely pubescent as the metapleura. Wings hyaline. The i is but 2"" in length, and agrees in color and sculpture with the $ , except that the tibia* and tarsi are darker than in that sex; structurally it is like the S nfpaUipes. II Am TAT. — ( Jreely, Colo. Types 4 S , 3 S , specimens in C(dl. Ashmead. Obtained from Mr. H. F. Wickham. MONOGRAPH OF THE NORTH AMERICAN PUOCTOTRYPID^. 281 Polymecus vancouverensis, sp. nov. 9 . Lenjiftb, 2.8'"'. Black, subopiuiue, <;losely, microscopically sha- greened. Aiitenuie black, the auteimal tubercles yellow; the first autl se<;oii(l club joints quadrate, the third, fourth, and fifth not longer than wide at tii>, the upper outer angle acute, the last joint conical, twice the length «>f the preceding. I.<'gs piceous-black ; the tibiic fuscous, tarsi pale brown, the trochanters and base of tibia' yellow. Tegultii black. Wings clear hyaline. Abdomen about twice the length of the head and thorax combined, the third segment half tlie length of the fourth, the fifth and sixth of an e«pial length, one-third longer than the fourth, the sixth conical. Habitat, — Yauc(mver Island. Type in Coll. Aslimead. J )escribed from a single si)ecimen received from Mr. W. Hague Har- rington. PolymecuB lupinicola, sj). nov. ^ 9 . Length, 1 to l.<5" ' ". Bl•^ck, shining, impunctured. Head trans- verse, as broad as the widest, part of the thorax, the vertex posteriorly faintly a(!i(;nlated. Mandibles black. Antenna' 10-jointed, black, the flagellum rather slender, not quite twice as long as the scape; i)edicel more tlian twice as long as thick at tip; funicle joints slender, cylin- dric, the first nearly twice as long as thick, the second longer, the third slightly shorter than the second; dub 5-jointed, slightly and gradually thickened toward tip, the first joint twice as long as thick, the seccmd, third, and fourth nearly equal in length, but not twice as long as thick, the last cone-shaped, very little longer than the preced- ing. Mesonotal furrows distinct posteriorly, becon)'ng obsolete ante- riorly, the middle lobe projecting slightly on the scutellum, the lateral lobes with a sparse tuft of pubescence at ba^e. JScutellum con- vex, smooth, shining, with a small tubercle at tip. Metathorax pubescent. Legs black, the tarsi fuscous or brown. Wings hyaline, pubescent, but not fringed. Abdomen longer than the head and thorax together, pointed at apex, contracteng. Mesonotal furrows complete, the middle lobe projecting slightly on the scutelluni, the lateral lobes with no tufts of pubescence at base. Collar and mesopleura striated. Scutel- luni highly convex, subopaque, without a tubercle at tip. Metathorax bare or faintly pubescent. Teguhe blat;k. Wings hyaline. Abdomen more than twice as long as the thorax, the petiole coarsely striated, the base of second segment with two aciculated foveohe at base. Habitat. — District of Columbia. Types in Coll. Ashmead. Several specimens. Polymecus melliscapus, sp. nov. 9. Length, 25"". Black, subopaipxe, very faintly, microscopically shagreened; the head behind and the face transversely aciculated. Scape, pedicel, and legs brownish-yellow; llagellum black; pedicel about as long as the first and second funiclar joints united ; joints 3, 4, and 5 of club not longer than wide at ai)ex, the last conical, scarcely twice as long as the penultimate. Metathorax and petiole, above and below, densely pubescent. Tegulic black. Wings hyaline, pubescent. Abdo- men twice the length of the head and thorax iniited, the third segment one-third the length of the fimrth, the fifth and sixth equal in length, a little longer than the fourth, the sixth beiiig conical. Habitat. — Washington, D. C. Type in Coll. Ashmead. Described from a single specimen coUect^'d by Mr. E. A. Schwarz. Polymecus compressiventris, Hp. nov. 9 . Length, 2.6"" . I*olished, black, impunctured ; the aiitennne and legs golden-yellow, the fiagellum very slightly obfuscated at tip. The pedicel is oval, not quite as long as the first and second funiclar joif^s united; first funing as thick; the MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 283 seooDd stouter, obconic; tliiid and fonrtli about equal, obeonio, but hmger tlian tlie second; the three following joints bell-sha]»ed, loosely joined, the last conioal, longer than the preceding. Thorax with two deep furrows. Teguhe piceous. Wings hyaline. Abdomen u little more than three times the length of the thorax, very long and acute, and strongly coniiaessed from above and below; when viewed from the side, knife-shai)ed. Habitat. — Washington, D. C. Type in Coll. Ashmead. Described frcmi a single specimen collected by Mr. E. A. Scliwarz. The very strongly depressed or ilat abdomen and the length of the anteniial joints at once separate this s])ecies from -ill other described forms, and I am not certain but that they are of suffl<'ient importance to establish a new genus. Polymecus auripes, sp. nov. 9. Length, I""".,- Black, shining; the head opaque, closely, micro- scopically i)unctate; anteniiiB and legs bright g(>ldeu yellow. Thorax without furrows, or these imly faintly indicated posteriorly; scutellum l)ubescent, foveated across the base and terminating in an awl-shaped si)ine; meta thorax and base of abdomen densely pubescent. Tegula? prominent, blaed, 4iglitly longer than the preceding. Mesonotal furrows complete, the middle lobe not projecting on to tlse scutellum, the lateral lobes with no tufts of pubes- cence at base. Scutellum highly convex, subopaque, the tip with the tubercle subobsolciC. Metathorax sparsely pubescent. Legs bla<'k, tips of anterior femora, their tibia^ and base aner than the liead and thorax together, shaped as in P. lupinkola. In the $ the trochanters, knees, tips of tibia? and tarsi are honey- yellow; abdomen nsiulupitiicoht; teguhe rnfo picivms ; antenna^ black, the first fnnidar joint niinute, the second, swollen, cnrvcd; clnb 6- jointed, tlie. joints, except the last, very little longer than thick; st^utel- Inni not tiibcrcnhir at tip. IlAiUTAT. — District of Colnmbia. Types in Xatiimal IMnscnni. Described from 3 and 9 specimens, reared April 30 and May 1, 1884, from a C'ecidomyiid gall, Cccitlomyiu nerrulata O. S., found on alder. SACTOQASTER Foister. Ilym. StiuK ii, p. 108, 1856. Epimecea Westw. (pars). (Type E. ventralis Westw.) Head transverse, the vertex somewhat acute, .the occiput delicately margined; ocelli .">, small, triangularly arranged, the lateral distant from the margin of the eye. Antenns^ 10-Jointed in both sexes, in 9 teriuiiiating in a l-jointed club; in $ with a a jointed, hairy club, the joints twice as long as thick, the funicle cylindrical, the i)edicel shorter than the flrst two funidar joints united. Thorax subovoid, the mesonotum smooth, a little longer than wide, without furrows, or the furrows only delicately indicated posteriorly; scutellum convex, ending in a thorn, bifoveated at base; metatliorax very short with a median carina, the nietapleura with a silvery or hoary pubescence. Front wings veinless, pubescent. Legs <;lavate, the basal joint of hind tarsi more than three times as long as the sece nuich lenjithened, cla- vate; club in female 4-jointed. the funiclar joints slender; in male ii- jointed, the joints cylindrical. Thorax ovoid, convex, the mesonotnm with or without furrows; scu- telluiu broad, subconvex, bifoveolated at base, the tip ending in a minute tubercle, rarely entirely wantinj;, and usually pubescent; niet- athorax very short, channeled at the middle, the metapleura usually densely pubescent. Wings, veinless, pubescent. Abdomen, oblong-oval, the apex a little more pointed in the 9 , the first segment a little wider than long, pubescent, the second very large. Legs clavate, the basal joint of hind tarsi twice or a little more than twice as long as the second. TABLE OF SPECIES. FKMALK.S. Alesoiiotnni witliout furrows, or tbest- only indicated ]»osteriorly 2 Mesonotnm with delicate bnt coiui»lete furrows. Coxa' black. Legs brown black. * Antenna' black, first and third funiclar joints small... S. nigripks, sp. nov. Legs pale rufous, jiosterior femora dusky. Anteunai pale brown, the scape rufous S. nuFiPES, sp. nov. Coxa' pale. Legs pale brown. Antenna' dark brown, tirst and second funiclar joints slender, cylindrio, nearly equal S. iNEK.Mis Ashm. 2. Mesouotal furrows indicated posteriorly. Coxa' brownish-piceous. Legs yellowish brown or brownish yellow, the posterior femora and tibia; at tip obfuscated, with sometimes all feuu)ra dusky. Antenna- ])ah' brown, tip of scape and the club dusky, Joiufi* I and 3 of funicle shorter than the second S. cokxuola, sp. nov. Legs, including coxse, uniformly brownish yellow, rarely with posterior femora dusky. AntennsB dark brown, the lirst three funiclar joints longer than thick, the first the shortest S. antexxakijc, sp. nov. Mesouotal furrows entirely wanting. Coxa> black. Legs reddish yellow or honey yellow, the middle femora and the posterior femora and tibise dusky or black. Scape rufous, the llagellum brown S. rufiscapus, sp. nov. Synopeas nigripes, sp. nov. , ■ S . Length, l'"". Black, shining, with a microscopic sculpture; the face highly polished, with a median impressed line ; lateral ocelli twice their width from the margin of the eye. Antennae 10-jointed, black, the flagellum thickened toward the apex, covered with sparse white hairs; pedicel as long as the first and second funiclar joints together, the first funiclar joint small, rounded ; club joints, except the last, longer than wide, the last ovate. Mesonotum with 2 delicate furrows; scu- MONOGKAPH OF THE NORTH AMERICAN FBOCTOTRYPID.E. 287 tellum convex, with a subobsolete tuben^le at tip; iiictapleiira opaque, sparsely pubescent; metanotuni subpubescent. Legs entirely black, the tarsi piceous. Teguhe black. Wings clear hyaline. Abdomen ovate, petiolate, as long as the thorax, the petiole and the base of second segment Kstriated, the third, fourth, tifth, and sixth segments with a transverse row of tine punctures. Habitat. — Washington, D. C. Type iu Coll. Ashmead. Synopeas rufipes. sp. uov. (PI. XII, Fig. 5, $.) i . Length, 1.5""". Subrobust, black, polished ; the head posteriorly transversely striated, the face very faintly punctured; lateral ocelli one and a half times their width from the margin of the eye. Antenna 10- jointed, pale brownish yellow, the o-j( tinted club black; pedicel longer than the second funidar joint, first and third funiclar joints small, the second the smaller, the club joints oval-moniliform. Mesouotum, with the parapsidal furrows distinct posteriorly, the base of the middle lobe projecting slightly upon the scutellum. Teguhe black. Wings hyaline. Legs rufous, the coxa? black. Abdomen ovate, a little longer than the thorax, the petiole and the foveolai at base of the second segment stri- ated. Habitat. — Arlington, Va. Type in Coll. Ashmead. Synopeas inernus \8bm. Bull. No. 1, ColL Bioi. Assoc, p. 10. 5 . Length, 1.4""". Black, alutaceous shining. Antennae 10-jointed, reddish, the pedicel twice as long as thick, the three tollowing joints very slender, cylindrical, the first two about esi(hil furrows distinct only posteriorly, ante- riorly obliterated; scutelluni a little elevated posteriorly, very pubes- cent, the tuben'le covered with hairs; nietapleura woolly. Teguhe ruto- piceous. Wings hyaline, pubescent. Legs pale brownish yellow, the coxie brown, the postt'rior femora and tibiiv at tips, obfuscated. Abdo- men oblong-oval, as h)ng as the head and thorax together, the i)etiole striated, sparsely pubescent, the second segment with 2 oblong foveolw at base, one on ea<'h side. Habitat. — Kirkwood, Mo. Types in National Museum. Described from specimens reared April 3, 1887, by Miss Mary Murt- feldt, from a Cecidomyiid gall on Cornvs paniculata, at Kirkwood, Mo. Synopeas antennariae, sp. nov. i 9. Length, 0.8 to 1.1""". Polished, black, impunctured; vertex of head posteriorly with a few faint aciculations. Antenna^ 10 jointed, dark brown, the tlagellum subclavate, the tirst funiclar joint small but still longer than thick and a little longer than the third, the club 5-jointed, the joints, except the last, scarcely twice as long as thick. Thorax with the mesonotal furrows indicated only i)osteriorly ; scu- telluni subconvex, smooth, not pubescent, the spine or tubercle want- ing; metapleura sparsely pubescent. Teguhe brown or rufous. Wings hyaline, legs reddish yellow, the coxa; brownish, the posterior femora sometimes dusky. Abdomen long-ovate, distinctly longer than the head and thorax together, the petiole grooved and with a sparse pubescence. In the $ the abdomen is oblong-oval, about as long as the head and thorax united; the legs uniformly bright yellow; the antenna? pale brown, the tirst funiclar joint very small, rounded, the second a little swollen and curved, about as long as the pedicel, while the club joints are all longer than thick. Habitat. — Milwaukee, Wis. Types in National Museum. Described from many specimens, in both sexes, reared May 31, 1888, by Mr. William M. Wheeler, from Cecidomyia antennaria Whir. Synopeas rufiscapus, sp. nov. S 9. Length, 1 to 1.1""'. Polished, black, impunctured; lateral ocelli about twice their width &om the margin of the eye, but still a MONOUKAI'H OF THE NOUril AMKKK'AN I'KOCTOTItYI'lD.E. 2S!) little iioarer to the iiiarjjiu of the eye than to the front ocellus. Scape and legs rethlish yellow, the coxa* black, the posterior femora and the tips (»f the posterior tibia* fuscous. Tlie pedicel is much stouter than th«' fuiiicle; the first two funiclar Joints about eeim.s Eucoila; metatliorax pubes- cent, with Literal earina-. Winpfs veinless, sliglitly fringed. Abdomen ovate, petiohite, the jH'tiole lonjjer than thick, striated. Lejfs chxvate, tlie tibial spars weak, scarcely develo]K'd, the tarsi .")- jointed, a little lonjjer tlian the tibia', the basal joint of hind tarsi fully 3 times as long as the second. A remarkable genus readily distinguished by the cupnliform scntel- luni and aftbrding additional evidence of the close atlinities existing be- tween the ProctotiypUkv and the parasitic CifHipida: Ccelopelta mirabllis, h]>. nov. (PI. xii.FiK. (i,^.) i. Length, 0.8'"". Bhu-k, polished; a;:tenna' brown, the scape yellow; legs reddish yellow, the coxa' black; nietath.. |». 7t). PI. 1. Fi;;. I. ^ 9. Lenjrtli, 1 to 1.2 '". Polislie', not longer than thick: ciubo-jointed, the joints a little h>nger than .i.ick. Abdo- men ovate, narrowed "t base, the base of the second segnieut with two long, striated foveohe at base. Habitat. — Arlington, Va. Types in Coll. Ashmead. Anopedias incertus. Ashm., Can. Eiit., xix, p. ISX, 9 ; Cress., Syii. Hyiii., p. 249. 9 . Length, 1.0""". Polished black, feebly sericeous; parapsidal fur- rows faintly indicated ])Osteriorly; scutellum ending in a small tuber- cle; metapleura covered with a dense silvery white pubescence; legs and antenna' brownish yellow or reddish, the 4-jointed club and the coxa black, the middle and posterior fenmra obfuscated. The head is transverse, obliquely narrowed behind the eyes, aluta ceous, the ocelli not (piite touching the border of the eye. Antenme lO-jointed, the funicle long and slender, the first joint as long as the h)ng and slender pedicel, the following joints shorter, subecjual, club joints, except the last, ([uadrate, the last conical, nearly twice as long as the penultimate. Abdomen oblong oval, polished, the broadest part a little wider than the thorax, the first segment short, densely pubescent above. S. Length, 1.4"""". Agrees with the 9 except that the antenna* and legs, including all coxa', are brownish-yellow, the club dusky, tlie abdo- men oval, narrower than the thorax. Hahitat, — Jacksonville, Fla. Types iu Coll, Ashmead, AMITUS Hiilileiiiiiii. Sill., Am. Jour., 2<1 Ser., ix, p. 1()!», 1S50. Zacrita Fiirster, Kleiiie M(»u., p. 46. (Type A. aleuiodinux Hald. ) Head transverse, thr; frons snbconvex, the occii)ut not margined; ocelli 3, subtriaTigularly arranged, the lateral distant from the margin of the eye; eyes o al. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPIDyE. 293 Anteuiue inserted Just above the clypens; in 9 8 jointed, the scape subcliiviite, lengthened, exteadinj^ far above the vertex; pedicel long, thicker than the first funichir joint; funichir Joints subeqnal, gradually becoming wider and shorter, the first the longest and slenderest; club thicker than the last Joint of funide and as long as the two ])receding Joints together, nnjointcd, but un. 110, 1S."(); Cr., Syn., Hyin., p. 250, ElaptuH alearodis Forbes, 14th III. Rep., 18Hi. p. 110, PI. n, Filumbia, and Illinois. Types in Coll. American Entomological Society. The types 1 have seen ; they are still preserved in tlie Coll. Ameri- can Entomological Society, although in poor condition. The National 294 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Museum contains a fresli s])ecinien, roared March 20, 1.S82, by Hi". Riley from AJeuroileH sp. occurrinj;- on Aver ilanifcarpina at Arlington, Va., while my collection contains a sinyle specimen cai)tnretl with the sweeping net. Prof. Haldeman gives the following interesting facts respecting it: "Parasitic gether ; first clu b Join t the shortest, the last the largest, ovate; in S with the club thinner, the,j<»ints more elongate, cylindrical, the first and second fnuidar joints h)ng, notsnuiU, or the first very minute, the second swollen. Thorax ovate, the pronotum produced into a slight neck anteriorly; mesonotura convex, about twice as long as wide, with 2 deep furrows; scutellum somewhat elevated, Avith a tuft of hair Tit tip, but without a thorn or tubercle; metathorax very short, with two mea!e. Antenna- dark brown, the first and second funiclar joints al>ont einial, tiie third and fourth niinutt-; ventral segments impuncfiired. T. viUiiiNiKNSis, sp. nov. Trichasis rufipes, s]>. nov. (PI. XII, Fig. 9, 9.) $ 9 . Lenfjfth, "2, to 2.5""'. Black, shining; the thorax ^rith a sparse, fine pubescence. Head transverse, with some microscopic punctures 041 the crown; lateral ocelli with a slij^ht curved depres.sed line behind; fa<*e highly polished. Antenna' lO-Jointed, the scape rufous, the liagel- Inm brown-black; pedicel of e<]ual length with the second funiclar joint; first and third funiclar joints smaller than the second; club 5-jointed, slightly thickened toward apex, the first joint a little longer than thick, narrowed toward base, the second, third, and fourtli joints (]uadrate, a little rounded basally, the last joint cone shaped, one third longer than the preceding. Thorax elongate-ovate with distinct furrow; scu- ti'llum depres.sed across the base, pubescent and with a tuft of hairs at tip; metapleura sericeous; teguhe black. AViugs subhyaline, pubes- cent, not fringed or the fringe exceedingly short. Legs yellowish-red, the coxsB black. Abdomen longer than the head and thorax together, pointed at apex, the petiole longer than thick, finely rugose, with a middle carina, the se(Hind segment very long with two long foveola? at the base, the tip with sparse whit<' hairs. In the $ the second funiclar joint is elongate the club G-joiuted; otherwise closely resembling the 2 . Habitat. — District of Columbia, Virginia, Florida, and Missn- gall on Blackberry at Cadet, Mo.; and others reared June 0, 1S8(», from a Cecidoniyiid gall on Vernonia novchoraceHsis, collected at Washington. Trichasis arizonensis, sp. nov. S 9 , Length, 1.2 to ].G'>"". Very closely allied to T. ruhicola, bnt differs in the vertex of the head being distinctly aciculated, the anten- na; being wholly brown-black, the legs darker, brownish or fuscous, the anterior legs, base of middle and posterior tibia; and tarsi pale or honey-yellow; while the 5-jointed club in the 9 is more slender than in T. ruhicola, with the joints at least twice as long as thick. The sculpture in both species is similar. Habitat. — Mount Graham, Ariz. Types in Naticmal Museum. Described from specimens reared from a Cecidoniyiid gall on w ild sunflower, received from Mr. H. K. Morrison. Trichusis brunneipes ABhin. Can. Ent., xix, p. 131, 9 ; Cress. Sj n. Ilym., p. 2eO. 9. Length, 2'"'". Elongate, polished, black, impunctured; head transverse, the lateral ocelli a little more than their width from the margin of the eye. Antenna; 10-jointed, cyliinbical, the scape and MONOGRAPH OP THE NORTH AMERICAN TROCTOTRYPID^E. 207 pedicel yellow, the Hji^elliim brownish-black; the lirst fiiniclar Joint is very small, the second elongate, twice the length of 'he pedicel, the third obconic, shorter than any of the following joints, which are fully twice as long as thick, cylindric and loosely joined, the last being con- ical and a little longer than the preceding joint. Thorax long, with 2 eonii)lele fuirows; scutellum with a tuft of ijubcscence at a]>ex cover- ing a minute tuben^le; metathorax pubescent. Ijegs brownish-yellow, the anterior i)air yellowish, the initldleand ixisteriorcoxa'. and thickened parts of their fenn)ra and tibije bnnvnish. VVMngs hyaline, pubest*ent. Abdomen long, conically i>ointed, polished, the ])etiole sti'iated, the third segment with a t insverse row of punctures, the fourth striated; the apical dorsal valve tlattenent by a transverse ridge, the lateral ocelli '>eing ne-U'er to the front o(!ellus than to the margin of theeye. Antenna' lO-joJnted. brownisii yellow, the club black; tirst and second funiclar joints equal, longer than thick, the third small, the fourth triangular; the club a little thickened towards apex, the first three joints transverse, rounded at base, truncate at tip, the first the snnillest, the last joint conical, nearly twice as long as the penulti- mate; all the club joints slightly pedicellate. Thorax ovate, polished, with two distinct furrows which are very delicately impressed anteii- orly; sides of collar visible in front of the teguhe; scutellum, with finely rugose, pubescent fovea? at base, a convex, shining prominence medially and a tuft of pubescence at tip, inclosing a small tubercle; meta])leura jnibescent. Wings subhyaline, probably from the fuscous pubescence. Legs brownish-yellow, the coxa? and femora with a red dish tinge. Abdomen pointed ovate, polished, petiolated; the petiole roughened, the aj)ical segment coide.al, as long as the fourth and fifth together; the second segment with 2 striated foveohe at base. IlAiiiTAT. — Arlington, Ya. Types in Coll. Ashmead. Trichacis auripes Prov. . ^ , Add. .t ('orr.,]».403. 9 . Long, li) pee. Noire, polif, brillanto; le scapti uvoir lea pattea d'un bean janno d'or. L« funicnlo des anteniies liruii fonco. Ailcs sans nervures distinctes, grandes, plna loiifjnes quo ralidoineii. Lo tborax r<^trt'ea hanebea noires, lea cuisKes ]>08t< rienres renllei-s en ninssiie et ])ln8 on nioins obacnres. Abdomen anbaesailo, ])oli, brillant, deprinie, arrondi a I'extrouiit*^, le 2" segment le pbiH gmnd. (Provaneber.) Haditat. — v'ap. Rouge, Canada. Not recognized. , • 298 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. HYPOCAMPSIS l'.".iHt«r. Hyiii. Stud., 11, i>. 108, (la^iti.) (No tyjK' «leHciilM'«l.) Fleiul traiisvoTse, froiis coiivex, tlio ociripnt not marjriiKMl; ocelli .'5, in a triangle, tlu' latcrnl iiean'r to tlie front ocellus tliiiii to tlie niarj^in of tbii eye. Anteniiic lO-jointed in both sexes, in 9 subclavate, <>r with a 4- or r>-joint('(l club, all the jiMuts cylindiical, the joints 2 to longer than thick; in S with the Ihst fnnichir J<»iiit short, cup shajted, tln^ secoml very strongly thickened, the last (> Joints cylindric, with short hairs, the last the longest. Thorax subovoid, the niesonotuni short, convex, with two inipi-essed lines; scutelluni snbelevated, rounded behind, foveated at base; meta- thorax very short, the ]»h'ura i)iilM'Scent. Wings veinless, pubescent. Abdomen uearly elliptical, tiie margins broadly detlexed, the tirst segment hmger than thick, the last 4 segments together not qnites as long as the second. Legs clavate. Distinguished by the broad, d<'flexed margins of the abdomen. Fr»rs- ter's type apju'ars not to havi^ been described, although Thomson has recognized the genus in Sweden and describes three species therein. Hypocampsis pluto Aslmi. (PI. XII, Fig. 10, $.) Can. EDt. xix,p. 131, $ ; Cress. Sjn». Hym., p. 250. 9 . Length, 1.5""'. Wholly black, jiolished, the tarsi ahme slightly piceous. Head transverse, wider than thorax, the lateral ocelli more than their width from the margin of the eye; the eyes large, long oval. Antennsi; 10-joiuted, the last funiclar joint thicker than the jneceding; chib 4-jointed (5 jointed if we count the thickened last funi«dar joint which might really be considered as belonging to it), the joints all longer than thick, cylindric, the last conical and longer than the i)enulti- mate. The thorax is roundedly narrowed anteriorly with 2 delicate furrows; scutellum rounded, highly convex; the metathorax short, strongly sericeous. Wings hyaline, pubescent, the teguhe black. Ab- domen subovate, pointed at tip, narrowed toward base, very little longer than the thorax, with broad lateral margins. ; Habitat. — Jacksonville, Fla. Type in Coll. Ashmead. ERITRISSOMISRUS Asbiii., gen. nov. (Type E. crcidoviyhr.) Head broadly transverse, with a sharp acute process between the antenna', the lateral ocelli away from the eye margin, but still nearer to it than to the front ooellus. . MONOORAIMI OV TIIK NoRTH AMERICAN PROCTOTKYPlDil':. 299 AiitoiiDji' lO-JointcHl, in both Kex«>s, oiuliiifj in a fi-j<»intesely joined to, and not separable from, the second. Thorax ovoid, convex, the niosonotal furrows distinct, the scutelhiu ronnded, t'le metatliorax very short, bicarinated. Wiiijjs vcinh'ss, abnost bare of pubeseencc. Ab(h)jn('n oval, the ])ctiole short. Lcgschivate, tlie liind tarsi h>nger tlnm their tibia', t lie basal joint long. A .cfcnus allied to PlKfiff/tiHtcr, but reatlily separated in the female by the a dark rufous or piccons. Legs rufous, the tarsi yellowish, femora .and tiba> often dusky. Scape black, sometimes pale at base and apex, flagellum dark brown; pedicel as long as the two IVdlowing joints united and stouter; joints one and three of funiele minute, the second slightly larger, fourth longer than wide; club joints except the last, very slightly^ wider than long P. UACCHARicoiJk. Ashm. Front legs, all trochanters and tarsi honey-yellow, sometimes the front femora and tibiie dnsky, middle and posterior femora and tibiae dark brown or black ; sometimes all tbe legs pale brown. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPIDiE. 301 Antennii- brown, the soapo variaMe, sonu'timca almnst Mack ; pedicel longer tliaii the two following joints nuited, not cHincially Htout; joint 1 of fnnicle very niinnte, Hccond larger and a little thicker than the third, fonrtli broader; eliib joints, except tlie last, not esj»ecially widened, slightly longer than wide P. si)1,ii>auinis Atiinn. 2. Legs dark rnfons, the tarsi pale. Antenna- brown; funiclar joints I to 3 very smnll, sMghtly increasing in size, fourth larger; club joints, except the last, scarcely longer than wide P. I'iNicoLA. 3. Vertex not transversely striated or acicnlated, smooth, or at the most very faintly acicnlated 4 Vertex posteriorly strongly transversely striated or acicnlated. Vertex impressed at the middle, subangnlatet the last, as wide as long. Four last dorsal segments with a row of punctures P. viticola. 4. Vertex angularly produced just over the eyes. Legs and antonnee black; tarsi piceous P. utauensis. 302 BULLETIN 15, UNITKD STATES NATIONAL MUSEIM. Vertox not iiiv'^iiliirly ]>r slender, the Joints distinctly lonf^er tlian thick 1'. KiriiOTi.K. First funielar Joint small, the second and tliird larjj;er, efjual; club slen- der, the joints, exeejit the last, not lon>;er tJian thick I*. lU Ml. Tejjnhe black. !• irst funielar Joint v»'ry small, second and third longer, eipinl, the, fourth stouter; club very sleniler, tin- Joints, except the last, scarcely longer than thick; a tuft of hairs at base of parai)8ides P. asvnai-T.k. First funielar Joint small, tiie second anil third longer, the second the larger, the fourth stouter, a little longer than the second; club not so slender, tins Joints, except the last, slightly wider than long; no tuft of hairs at ba.se of parajtsides 1'. iiUACHl'C.K. 5. Tegube rufo-jiiceous. Legs rufo-j»iceous, the front tibia- and all tarsi aiul knees honey-yellow. Antenna? brown-black; Joint 1 of fnnicle minute, second slightly longer and thicker than the thiid, fourth as long as second, but stouter; club Joints slightly ]>edic« llato, a little longer than thick; no tuft of hairs at base of parapsides I*, actino.mkhiuis. Antenna' lirown; Joint 1 of funielo very minute, second and third longer, about e thicker toward apex; the Joints, excejit the last, one and a half times as huig as thick; wings hyaline P. toi.oKADK.vsis. Antt-nna? very slender, long, anbelavate, black; joint ' of fnnicle twice as long as thick, second nearly twice as long as the first, third and fourth shorter bnt stouter; the clnb joints thrice as long as thick ; wings hyaline P. filicornis. Vertex posteriorly smooth, shining. CoxiP and legs black, the tip of anterior tibia' and tarsi fuscous. Antennai black, the pedicel 2J times as long as thick ; first three fnniclar joints about of an eqn.al length, the third a little the stoutest; club 5- jointed, very little longer than thick, except the last, the three middle joints outwardly subserrate; wings slightly sniokj'^. P. CAUFORN1CU8. MONOGRAPH OF THE NORTH AMERICAN TROCTOTRYPIDJi. 303 MAI.KS. Mosoiiotnm with ilui furrowH complete 5 Mc'Hoiiotmii with iiiiTows indicatid only ])OMt<'ii(»rly 3 MeHoiiotuin without trace of liiiiiiwH or tho faiute.st tr.Hti i)08tcri<»rly, V«rt»'x not or very faintly trannverMely aciciiluttsd — ... 2 Vortt'x trausverscly iiciculated or striatt'd posteriorly, t'oxn' black. Logs black or brown-black. Antcunic black; i>cicoou8. Legs dark rufo-i)ieeous, tarsi honey-yellow, femora and tibia- dnsky at the middle. Scape Idack, flanellum dark brown P. 8t)Mi)A»;iNi.H. Antenna- brown-black; pedicel about as long and thick as the s(-cond funi- clar joint; club H-joint oval-uioniliforni, slightly jiodicellate, hairy. P. l«ACCIIAKI('0|.A. Antenna) dark brown ; pedicel almost as long as three funiclar joints united ; first funiclar joint niinutt;, close to the second; the second twice as long as the first; the third half the length of fourth; first three club joints e<|ual, oval, the last conic, narrower and longer than the preceding P. diplosiuis. Legs rufous, tlui tarsi ])ale. Antenna- brown ; pedicel about as long as the first two funiclar joints united; the first funiclar joint minute, closely nnitet tli*> otlivi-H, cliilt (t-JointiMl, tli<- jointH, t'xct'pt tliH l:iHt, not Ion;;*-!- tli:in wide, thu liint ('<>ii)'-Hliii|u'j an tli<* Hccond fnnidar Joint, the tirnt rouiulrd, tlio Miconil ia> at tips, all tarsi and the liasuofmiddlu and poMterior tiliia-, honey-yellow. Pedicel Iou;;crthan the hccoikI Innicl.ir Joint, which iu dilated apically, the lirst funi<'lar Joint small, cinit li-Jointed, th<> Joints, except the first and last, a little longer than thick, the first as wide as long, thu laut coniial, twice as long as tlio i)ruceding P. hikmaiis Forbes. L«' ..1 rufo-piceons, anterior tiliia^ ami the tarsi honuy-yellow. Peal(' at ti|i. llitt liiHt Hiiiall, tlio hicoimI u litlli- ciirvnl, club li-joiiitt^d, tlio ji»iiitH, fxi-i>|it, tlxf l.-ittt, a litllo Ioiik**)' tliaii tliick, tli<* lattt (uuu-HliaiHjtl, uiiu-tliinl lur^vr tlian tlm peimlliiiiati-. 1'. ( Ol.UltAUKXMH, Aulfiiiia- autl lo^H riitb-piccouH. i'lMliccl not aH lon^ as tliu tirat and sorond t'nniilai' Joints nnit<. nuv. S 9 . lAMij,'tli, O.SO to 1. to PoIislM'*! bliM'k ; head tlirit-e as wide as tliick aiitero iM)stt'ri<>rly, the vertex posteriorly stroiifjjly transversely aeieidat«'d, I'aee smooth. Aiit«iiiia; 10 jointed, black, the llaj^elhun not «|uite tvvit-e as lonjj sis the scape; pedicel as lonj; as tlie first and second tnniclur j()ints toj;ether but stouter, the tip i>ale; joint I of tiimclc very small, yellowish, not as lonjjf as thick; second scarcely twice as lonj" as thick, third shorter, I'oiirth no huij^er than the third but a littie sts and rounded bas- ally. Thorax ovoid, the collar anteriorly sli<;htly miirroscopically sha- jiieened, niesonotal furrows most Irequently entirely wantinj^, seldom slijjhtly indicated posteriorly, the base of the i>arapsides, just in front of the scutellum, delicately punctate and spars<'ly pubescent. Scutel- luni transversely liijjhly, convex, jjolislicd. Arcl:i])leura nearly bare, delicately sculi)tured. Tej^ula* black. N\ injjs hyaline, iridescent, jiu- bescent. Legs black, the tibia', and tarsi i)iceous or brown-black. Abdomen very slightly larger than the thorax, ])olished, the petiole fluted at base, the second segment with two slight foveolaj at base which are faintly aciculated. .t?. The S is usually the smaller, the abdomen being scarcely as long as the thorax, and broadly rounded behind, while the ditlerences in the antenna' readily distinguish it. The tlagellum is covered ^ith a rather dense, short, white pubescence; the pedicel oval, not longer thau the second funidar joint; first fun iclar joint nioniliform; second thickened at tip, and longer than any of the club joints except the hist; club joints, excei)t the last, not longer than thick, the last pointed, fusiform, twice as long as the penultimate. Habitat. — Los Angeles, Cal. Types in National Museum. 13red by A. Koebele ffom a Cecidomyiid gall on the midrib of willow. 21809— No. 45 *30 30G BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Polygnotus diplosidis, sp. nov. 9 . Length, 1""". Polislied, black; bead as in P. salicicolo, but the vertex posteriorly is not so strongly aeiculated. Mandibles yellow. Antennje 10-jointed, brown-black; pedicel longer and stouter than the two following joints together; first three funiclar joints about equal in thickness, the tirst and second small, about equal in length, the third \ery slightly longer; club 5-jointed, joint 1 not quite as thick as the following, 2,3, and 4 about equal, a little longer than thick, cup-shaped, the last cone-shaped, 1 i times as long as the preceding. Thorax ovoid, not much longer than wide, without a trace of the furrows, polished. Scutellum transverselj', highly convex, smooth, shining. Metapleura sericeous. Teguhe black. Wings hyaline, pubescent. Legs brown- black, the base of tibije and tarsi ]>aler. Abdomen as long as the thorax, polished, the petiole striated, pubescent beneath, the second segment with two striated foveoht> at base. Habitat. — New Brunswick, N.J. Type in National Museum. The siiecimens were reared February 12, 1891, by Prof. John B. Smith, from a Cecidomyiid, J>?/>/o*iv si>. found on pine. Polygnotus baccharicola Ashm. (PI. xiii, Fig. 2, 9.) Can. Ent. xix. p. 132; Cress. Syn. Hyui., p. 250. S 5. Length, 1 to 1.20"'"'. Black, shining; head broadly transverse, the vertex posteriorly transversely aeiculated; face smooth, wnth some aciculations just above the insertion of the antenna'. Mandibles piceous. Antennje 10-jointed, black to brown-black, the scape sometimes pale at base and apex, with the pedicel and first and second funiclar joints sometimes pale; pedicel in S as long as the first and second funiclar joints together; joint 1 of funicle very minute, second as thick as long; third sumller; club 5 jointed, the first joint longer than wide; the following joints to the last a little wider than long; in 9 the club is 4-jointed, the joints stouter than in the S . Thorax short, ovoid, smooth, and shining, without a'trace of the mesonotal furrows. Scutellum transversely, highly convex. Metapleura sericeous. Teg- ular piceous. Wings hyaline. Legs, including coxje, rufo-piceous; trochanters, base and tips of tibijv, and the tarsi honey-yellow. Abdo- men longer than the thorax, polished ; the petiole striated, the second segment with two striated foveola'- at base. Habitat.— -Florida. Types in Coll. National Museum and Coll. Ashmeatl. Many specimens reared by myself at Jacksonville, Fla., from Cecido- ttiyia baccharmh Ashm. MS. M<>.\(KJRA1'F! OF THE NOHTH AMKKICAN PUOCTOTKYIMD.E. 307 Polygnotus solidagiuis Asbin. Can. Eiit. xix, p. 131; ('ies«. Syu. lljiii., p. 25(). S 2. Length, 1 to l.OO""". Black, iiolislied; licad very wide, the vertex posteriorly strongly transversely striated ; faee smooth, polished. Mandibles nitons. Anteniiie lO-jointed, brown, the scape often black; pedicel in S longer than the tirst two funiclar joints; joint I of fnnicle very small, yellowish; second much larger than the third, and thicker; club joints, except the tirst and last, hardly longer than thick, the first wider than long, the last cone-shaped ami one-lialf longer than the i)re- cediiig; club in 9 4-jointed, the last funiclar joint obcouic. Thorax ovoid, smooth, usually without a trace of furrows posteriorly, and sparsely pubescent, especially near the scutellum. Scutellum high, convex. Metapleura sericeous. Teguhe i)iceous or black. Wings hyaline, pubescent. Legs, including coxa% variable, from a pale rufous to rufo-piceous, sometimes only the tarsi are pale; sometimes trochan- ters, bases and tips of tibiie, and the tarsi honey-yellow, and sometimes the middle and posterior femora are black. Abdomen longer than the thorax, the petiole striated; the striit from the basal foveohe on tlie second segment extend to the middle of the segment. Habitat. — Florida and Missouri. Types in Coll. Ashmead and National Museum. Many specimens. First bred at Jacksonville, Fla., by myself from Cecidomyia nebulosa Ashm. MS. Dr. Ililey has also reared it at Bush- berg, Mo., from a Cecidomyiid gall on Soliflago, September 21, 187G, while Miss Murtfeldt bred it from the same gall at Kirkwood, Mo., September 13, 1885. , . Folygnotns pinicola, sp. nov. S 9 . Length, .80 to 1""". Black, shining; head wider than the thorax, smooth, highly polished, the ;ertex ]>osteriorly and the occiput not aciculated. Antenna' 10-jointed, brown; lirst three funiclar joints small, slightly increasing in length; club ."i-jointed, the joints, except the last, scarcely longer than wide; in S the first funiclar joint is very small, the second slightly curved, dilated, and truncate at apex; the club 6-jointed; the joints, except the last, moniliform, slightly pedicel- late; the last fusiform, much longer than the preceding. Thorax short, ovoid, shining, without a trace of the niesonotal furrows. Scutellum high, transversely, convex. Metapleura nearly bare. Teguhe piceous. Wings hyaline. Legs, inclu equal, very slightly longer than thick, 4 ;vs long as thick at tij), narrowed toward base; club 4-jointed, the j<)ints, except the last, a little longer than thick, the last slightly longer than tlu' preceding, cone-shajied; in ^ the second fuuiclar joint is curved, dilated and truncate at tip; the club 0-jointed, slightly thickened towards the tip, the joints oval nioniliform, hairy, slightly pedicellate, the last joint nearly twice as long as the preced- ing. Thorax ovoid, highly polished, the mesonotal furrows distinct for nearly half the length of the mesonotum posteriorly. Scutellum high, transversely, (convex. Metanotum Avith 2 carinas on the disk; meta- pleurr bare, aciculated in the $ , sericeous in S . Tegulic black. Wings hyaline. Legs black, the anterior and middle tarsi white. Abdomen in 9 as Imig as the head and thorax together, shoi-ter in the 6 , the petiole striated, the second segment striated at base, the stria; extend- ing along the sides to the middle of the segnuMit. Habitat. — !San Diego and Los Angeles County, Cal. ■ Tyi)es in National Museum. Described fiom several specimens, reared in July, 188<5, by A. Koebele, from aCecidomyiid gall on an evergreen shrub [Bigehvia or Artemima sp.) taken at Xewhall, Los Angeles County, Cal.; also one female, labeled as having been reared from AHpUliotua on Biydovia^ by the same observer at ^an Diego, Cal. It is scarcely necessary for me to state that this latter statement is erroneous, as we know positively no Platygasterid is parasitic ou Coccids. * Polygnotus atriplicis, sj). uov. $ 9. Length, 1 to 1.40"'. Black, polished; vertex posteriorly transversely aciculated, the face smooth. Mandibles ]nceous. Anteu- nse lOjointed, black; pedicel as h)ng as the first and second funiclar joints together, a little pale at tip;firstfuni(!lar joint small, pale; second and third cylindric, the third shorter than, the second; club r»-jointed, the first joint a little narrt)wer than the following, contracted toward the base, the other joints to the last longer than thick, cup-shaped, out- wardly at tips subserrate, the last cone-shaped, longer than the pre- ceding. Thorax ovoid, ]>o]ished, the mesonotal furrows indicated pos- teriorly for more than half the length of the mesonotum. Scutellum transversely high, slightly pubescent i)osteriorly. Metapleura seri- MOXOCRAPH OF THK NORTH AMERICAN PROCTOTRYPIDiE. 309 ceou8. Tefiula'piecous. Wings hyaline, iridescent, sparsely pubescent. Legs black, tlie anterior tibiie toward tips and all tarsi lioney-yellow. Abdomen not quite as long as the hciul angether, the tirst segment ind the secs of tibia' and tarsi honey-yellow. Abdomen as long as the head and thorax together, polished, the petiole striated, the second segnuMit with L* striated foveohe at base. Habitat. — Lancaster, Los Angeles (Nmnty, Cal. Types in National Mnseurn. Described from seveial specimens, reared by A. Koebele, December (5, 1.SS7, fnun a Cecidomyiid gall found on Artemisia californica. Polygnotus virginieiisis, sp. no\ . 9. Length, 1.2""". Polished black. Head alxmt. '5 times as wide as long antero i)Osteriorly, the occiput transversely striated, the face smooth, shining, impunctured; legs and anteniue black, articulations of legs and tarsi brown. Kunicle .slender, the first joint small, the second a little larger than the third; club joints about twice as long as thick 810 BULLETIN 4r>, TINITKD STATES NATIONAL MUSEUM. or nearly so. Thorax with distinct furrows posteriorly, the ini(lth, polished. Antennae 10 Jointed, dark brown; pedicel longer than the first and second funiclar Joints together, pale brown; tirst funiclar joint very minute; second a little longer than thick, third not longer than thick ; chd) o-Jointed, the first joint a little longer than wide, slightly narrowed toward bast', the second, third, and fourth quadrate, the last ovate, longer than the preceding. Thorax ovoid, polished, the mesonotal furrows indicated oidy posteriorly and very faintly. Scu- telluni high, transversely, convex. Metapleura sericeous. Tegula's black. Wings hyaline, with pale i)ubescence. Legs brown, the tro- chanters, tips of tibiie and tarsi pale. Abdomen a little longer than the thorax, the petiole and the second segment at base striated. Habit vt. — District of Columbia. Types in National Museum. Described from 4 specimens, reared July 31, 1886, from a Cecidomyiid gall iu the flower bud of alder. Polygnotus tumiduB, sp. nov. *' 9. Length, 1""". Black, polished; head nearly 4 times as wide as long antero-posteriorly, the vertex transversely sti' ted. Mandibles brown. AntenuiTi 10 Jointed, brown-black; pedicel noi (juite as long as the first and second funiclar Joints united; first funiclar Joint small ; sec- ond and third nearly equal ; club .l-Jointcd, very wide; the second, third, and fourth joints wider than long and at tips toward (me side a little serrated, at base rounded, last Joint more slender and longer than the preceding. Thorax ovoid, highly polished, the mesonotal furrows only faintly indicated posteriorly. Scutellum high, convex, polished. MONOGRAPH OP THE NORTH AMERICAN PROCToTRYPIDvE. 3tl Metapleur«*i bare, faintly striated, Tegnlse nilbns. Wings hyaline. Legs brownish-pieeons, the trochanters, tips of anterior tibia^, and all tarsi ])aler. Abdomen polished, not longer than the head and thorax together, the petiole striated; the second segment, at base on either side, with two striated foveol*, the striie extending to the middle of the segment. Habitat. — Washington, D. C. Type in National Museum. Bred February 25, 1881, from Cecidomyla symmetrica O. S., a gall common on the leaves of various oaks. Polygnotus laticeps, sj). nov. $ 9. Length, 1.2 to 1.9""'. Polished black, impunctured; head very wide, fully 4 times as wide as long antero-posteriorly; the occi- put transversely aciculated, the face tiat and highly polished, the lat- eral ocelli about twice their width from the ntargin of the eye. An- tenufe and legs black or brown black, trochanters, base of tibia% and tarsi paler brown. Thorax rounded before, rather short, with distinct parapsidal furrows posteriorly, the middle lobe projecting a little upon the base of the scntellum, the scut«llum highly convex, jwhshed, deeply fovcated along the base; metathorax short, the pleura faintly striated or pubes(;ent. Abdomen broadly ovate, the apical, ventral, and dorsal segments with transverse rows of punctures. Wings hyaline. Theau- tennjc in the $ terminate in a "> Jointed club, the joints, except the last, being as broad or a little broader than long; in the 9 the joints are longer than wide. Habitat. — Jacksonville, Fla. Types in Coll. Ashmead. Polygnotus hiemalis Forbes. Platygashr humalis Forbes, Psyche, Vol. 5, p. 39 (1888). S 9. Length, 0.80 to 1.40""". Black, polished; head about two and a half times as wide as long antero-posteriorly, the vertex poster- iorly only faintly aciculated, the face smooth, polished. Antenna; 10- jointed, brown-black, the flagellum twice as long as the scape; pedicel as long as and much stouter than the first two funiclar joints; first fuuiclar joint small, not longer than thick, yellowish basally; second larger and a little longer than the third; club 5 jointed, the joints, except the last, a little longer than wide, the last cone-shaped, one- half longer than the preceding. In the male the second funiclar joint is thickened, curved, and as long as the pedicel the latter whitish or yellowish at tip; the first funiclar joint small, coh.racted atbase; club 6 jointed, villose, the joints oblong, slightly pedicellate, the first, the shortest, narrowed basally, the last ovate, not quite twice as long as the penultimate. Thorax ovoid, polished, the mesonotal furrows del- 312 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. icate but distinct posteriorly, in tbe 3 almost obliterated, tlie middle lobe projecting slightly upon the scutellum. Scutellum very high, transverse, convex. Metapleura subsericeous. Teguhe rutb-piceous. Wings hyaline, pubescent. Legs dark brown to piceous, trochanters, tips of anterior femora and tibia*, base of middle and posterior tibite, and all tarsi brownish-yellow or honey-yellow, sometimes the poster ior femora black. Abdomen in the .9 about is long as the bead and thorax together, in S shorter; in both sexes, the petiole and the fove- ola^ at base of the second segment striated. Hakitat. — Western States. Types in the Illinois State Laboratory of Natural History and National Museum. This species seems to have been first reared by Dr. Riley, from spec- imens of the Hessian tly {Cecidomyia destructor Say), August IG, 1870^ received from Blair, Nebr. It has, however, since been bred from the same tly, by viirious persons in the Western States. Prof. Forbes reared it in 1888 at Chami)aign, III.; Prof. Cook, of Agricultural Col- lege, Mich., in 1800; and Prof. Webster at Laporte, Ind., in 1889. I know of no specimens reared in the Eastern States. Can tbe species be moving Eastward? Polygnotus prozimus, sp. nov. S $ . Length, 0.80 to 1.20"" . Black, polished ; head thrice as wide as long nntero-posteriorly, the vertex posteriorly transversely aciculated, the face polished. Mandibles piceous. Antennae 10-jointed, brown- black, much slenderer than in J*, hicmalifi, the Hagellum slightly more than tvice the length of the scape; pedicel long, cylindric, as long as the first and second, funidar joints together; first funidar joint longer than thick, whitish at base; second much longer and thicker; third shorter than the second and constricted at ai)ex ; club 5-jointed, slender, the joints neaily twice as long as thick, the last fusiform, longer than the preceding. In the male the pedicel is oval, not quite as long as the first and second fnniclar joints together; first funidar joint small, monili- form; second larger, «lilated and truncate at tip; clnb 0-jointed, hairy, the joints, except the last, moniliform, not longer than thick, slightly l>edicellate, the last <'one-shaped, nearly twice as long as the preceding. Thorax ovoid, polished, the mesonotal furrows indicated only poste- riorly, the miosteriorly, more distinct in the female, tlie basal point of the middle lobe projecting slightly upon the scutellum, the lateral lobes at base slightly pubescent. Scutellum transverse, high, convex, very sjtarsely pubescent. Metapleura sericeous. Teguhe rufo-piceous. Wings hya- line, pubescent. Legs, including coxa), rufo-piceous or brownish, the tarsi paler, or yellowish. Abdomen ovate, scarcely longer than the heas of the middle lobe slightly elevated. Scutelluni high, transversely convex, sparsely ])ubesceut posteriorly. Metapleura bare, aeiculated, in S slightly seri- ceous. Teguhii black. Wings hyaline, pubescent. Legs black or brown-black, the tip of anterior tibiae and all tarsi, honey-yellow. Abdomen not longer than the thorax, polished, the petiole and the foveolai at base of second segment striated, the third and following segments with transverse rows of punctures. Habitat. — Arlington, Va. Types in National Museum. Described from several specimens, bred July 3, 1883, from a Cynipid gall, NeuroteruH hatatus Fitch. MONOORAPII OF TIIK NORTH AMERICAN PROCTOTRYPIDiR. 315 Polygnotiis eurotiae, sp. nov. 9. Lenj^tli, 1 to 1.20"". r>lack, polished; licad thrice as wide as thick antero-posteiioily, the vertex perfectly smooth. Anteuua- 10- Joiiited, blaitk; pedicel sliyhtly lonj^^er and thicker than the first and second I'nnielar joints together, the tliree liiniclar Joints cylindrical, of a nniforin thickness, the first, the shortest, the second, the lonji^est, but only a littler lon,<;-er than the third; club 5 jointed, slender, the Joints all distinctly l()nj>;er tiiaii thick, about li times as long as thicik, the last long, conical. Thorax ovoid, polished, the mesonotal grooves dis- tinct posteriorly for half the length of the niesonotuni, the base of the lateral lobes with some short s«^ria'. S<'utellum high, transversely, con- vex, slightly ]mbescent posteriorly. INIetapleura sericeous. Teguhe rnfo-i>iceous. Wings hyaline, i)ubeseent. Legs brown Idack, anterior knees, tips of tibia' and all tarsi honey yellow. Abdomen as long as the thorax, polished, the petiole aiid foveolished, about as long as the head and thorax together, ])ointed at tip, the petiole and the foveohe at base of second segment striated. Habitat. — Arlington, V^a. Types in National Museum. Described from two sj>ecimens, bred March 30, ISSO, from Cecidomyia farinosa O. S. found on blackberry. Prof. John B. Smith has also reared the same insect from a gall on blackberry at New Brunswick, N. J, Polygnotus asynaptae, sp. nov. ^9. Length, 0.80 to 1.20"''". Black, polished; head in 9 about 3* times as wide as thick antero-posteriorly, but in the S scarcely thrice 316 BULLETIN 45, UNITKD STATES NATIONAL MUSEUM. tis wide as tliick, the vcitt'X i)ost<'rioily not or voiy laiiitly nciculnted. Antenna' lojointcd, hljuk, tlio lla^clhini slender, twice as loiij;- as the scape; pedieel about as long and thiek as the second of anterior tibia' and the anterior and middle tarsi brownisii. Abdonu'u i>olished, pointee8 in N.ational IVIuseum. Described from several s]>ecimens, reared January 22 and February 1 and 3, 181)0, by Prof. <>. S. Westcott, from a willow Ceeidomyiid (Asy- napta, sp.). PolygnotUB huachucae, sp. nov. $9. Length, O.SO to 1.40"'". Black, polished; head about thrice as wide as thick antero posteriorly, the vertex i>osteriorly showing taint traces of aciculations. Mandibles piceous. Antenna', 10-Jointed, black, the tlagellum one and a half times as long as the scape; pedicel a little longer than the tirst and second funiclar Joints together; first funiclar Joint very minute, pale; second and third longer, the second the larger; club 5-Jointed, the first Joint smaller than the three follow- ing, whicli are a little wider than long, rounded at base, truncate at tip, the last cone-shaped, a little longer than the preceding. In the S the Hagellum is not quite twice as long as the scape, the pedicel equal in length with the second funiclar Joint, tirst funiclar Joint annular, second not quite as long as thick, obliquely truncate at tip, club 6-Jointed, covered with a short, grayish i)ubescence, the Joints sub- moniliform, the last cone shaped, not quite twice as hmg as the pre- ceding. Thorax ovoid, polished, the mesonotal furrows indicated only posteriorly, the lateral lobes posteriorly bare, without tufts of hairs. MONOIJKAI'II OF THE NOUTH AMERICAN PROCTOTRYPID.E. 317 Sciiti'llum siiiootli, <'onvex. Metapleuia subsericoous, aciculated. Tey- ula^ blark. NVinjLjs liyaliiu*, stroiifjly iriartinent by U. K. Morriscui. Polygnotus actiiionieridis, n|i. nov. S 9. Leiif^tli, tMJO to l.L'O lilaek, polislied; bead '2.[ tiiiu's an wide as thick aatero posteriorly, the vertex postericuly very faintly acii'ulated, the face smo«>th, with transverse aciculations above th»' iii- sertiou of the antenna'. Mandibles piceous. Antenna^ lOJointed, (lark- brown, the scai)e paler toward base; pedicel as lonjj as the secoiul and third fuuiclar joints tojjether; tirst funiclar joint verysuuiU; second st«niter ami longin- than the third; third a little longer thau the tirst; club 5-jointed, the joints lonjicr than thick. In the i , the second funiclar joint is dilated and truncate at tip, the club <5-jointed, the joints oval- uiouiliforui, the tirst the smallest, the last enlarged, fusiform, stouter, and twice as hmg ;is the preceding. Thorax ovoid, jujlished, the mesono- tal furrows distinct ]>osteriorly ; U() tufts of ])ubesceuce at baseof i»ar- apsides. Scutellum high, <-ouvex, polished, with a slight silky i)U- bescence. IMetapleura subsericeous, aciculated. Tegulie rufo-piceous. Wings hyaline, pubescent. Legs dark rufous, the anterior tibiae, and all tarsi honey-yellow. AbdonuMi abitut as long as the head and thorax together, i)olished, the ]tetiole and the foveohe at base of second segment striated, the ventral segments 3, 4, 5, and G witli a transverse row of fine punctures. Habitat. — Washington, D. C. Type in National Museum. Described from 4 specimens reared April 23, 1884,fromaCecidomyiid gall on Actinomeris squarrosa. Polygnotus vernonise, sp. nov. , IINITKI* STATKS NATIONAL MUSEl'M. s«'coih1 fiiiiiclar Joint is flub (}-joiiit<'«l, tl:«i last nilarjit'd, ob- long, the otlit'i- joints inoiiiliionn. Thorax ovoid, |iolisli(>i pu- besi'eiice. Li'gs brownishjdceous; front lejis, tips of mid lie and jtos- teiior tibia', and all tarsi honey ye'low. Abdomen pointed in 9, a lit- tle longer than the head and thoiax t(»gether; shortt'i' and obh>ng oval in S , the i>etiole and foveola' at base of s«'eon«l se<;nieiit stiiated; the third and folhnvinj^ segments, in the S ,witli a row of punctures at base. Habitat. — Arlington, Va. Types in National Museum. Described from several sj»eiimen.s, reared Juue IH and 17, 18.sosteriorly ; scutellum cushion shaped, the metapleura covered with a white i)ubescence. Abdomen pear-shai)ed, not as long Us the thorax, smooth, polished, except the petiole, which is wider than long, striated, and some strite at base of second segment. Habitat. — Jacksonville, Fla. Type in Coll. Ashmead. ' ■ • Distinguished by the color of the legs and the peculiarity of its an- tenn.ne, the pedicel being unusually long for a species in this genus. Polygnotus euurae, sp. nov. $. Length, LfiO""'. Black, jwlished; head two and a half times as wide as thick a u lero posteriorly, the vertex posteriorly not or very faintly aciculated. Mandibles rufous. Autennat lOJointed, brown- black ; pedicel one and a half times as long as thick; first funiclar joint small, rounded; second longer than thick, vshghtly curved; club lriir;i Mt'iireoiiM, Tr^Mila- riiloiis. \Viii}fs liy;iliiii>, imlu'scriit. IaVi^s, iiu-Iiuliiij; rox;r, dark nil'ous. Aluloineii ibloiiK-oviil, aixMit as lon^ as tiic thorax, the pctiule and tht* t'oveuiii'. at hast^ of s«'«'(nid si'^^iiu'iit stiial«Ml. IIAIUTAT.— St. Louis, .Mo. TyjM's ill National Miisimiiii. Des(rilM'i. C. V. Kiley, Iroin the Teiithiedinid jjall Eiuno n. lUnliis Walsh. The spe. iiov. S. lieii^tli, r , Black, slijiiiiiji; tlu' head tiaiisverse with the liit- eral ocelli twice their width tVoni the eyv iiiaryiii; antcniiic brown, tlic scai)e toward apex ami the itcdiccl at tip yellowish; h'<;s rufous; wiiij;>s liyaliiH'; luesonotal furrows distinct. Tiic antennic are lO-joiiitcd, the scape clavate, as lonji' as the thijicliuni; pt'dicel ohconic, as lonj;' as the first and second joints united, tJie latter closely joined, swollen or dilated; club 6-joiiited, all the joints, excei)t the last, transverse, the last conit'al, a little more than twice tiu^ lenjith of the i)enultimate. Pronot'ini i)erfectly smooth, hijjhly i)olished, the nieta]ileura with a tine silvery pubescence. Abdomen oblong oval, polished, the petiole short, striated. Habitat. — District of Columbia. Type in Coll. Aslnnead. Taken by Mr. E. A. Schwarz. Polygnotus astericola, s]>. nov. i 9 . Length, 0.80 t(> 1" ". Black, polished; heati thrice as wide as thick antero-jmsteriorly, the vertex not or very faintly aciculated, the face snio«>th, iM)lished. 3Iandil>les rnfo-piceous, Antennaj 10-jointed, tlark brown; pedicel twice as long as thick, tirst funiclar joint minut(?, pale, a little longer than thick; second larger, very little hmger than the third; club 5-jointed, latlier slender, the joints about as wide as long. In the S the second funicle joint is as long as the pedicel, a little curved, dilated and truncate at ti]», the club (J-jointed, the joints oval- moniliform, slightly pedicellate, the last cone-shaped, a little stouter aud twice as long as the [>receding. Thorax ovoid, \>olished, the mesonotal furrows indicated i)osteriorly, the basal tip »>f the midarapsides with a tuft of pubescence at base. Metapleura sericeous. Teguhe black. Wings hyaline, pu- bescent. Legs, including coxa-, rufopiceous, the trochanters, knees, tips of tibije, (the anterior tibia* almost entirely) and all tarsi, honey- yellow. Abdomen not h)ng»'r than the head and thorax together, ob- long oval, broader than, and not so pointed as in 7*. n'rnonin; the basal segment and the foveohe on the second striated; the S abdomen shorter and without row of i>unetures on the ventral segments. Habitat. — Ilolderness, N. II. Types in National Museum. Described from several spe«imens, reared ^lay 24, 1S84, from a Ceci- domyiid gall on Aster, collected by A. Koebele. Polygnotus coloradensis, sp. uuv. S 9. Length, 1""". Black, polished ; head thrice as wide as thick antero-posteriorly, the vertex very faintly, microscopically shagreeued, the face smooth, highly polished, the lateral ocelli as far from the mar- giu of tUe eye as to the Iroiit ocellus. Mandibles piceous-black. Au MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 321 tennae lO-jointed, black, the pedicel stouter than any of the club joints and about 2^ times as long as thick; first and second funiclar joints small, the second slightly the longer; the third and first joints of club about equal, longer than the second, the club very gradually thickened toward the tip, the joints, except the last, 1^ times as long as thick, the last joint stouter and longer than the penultimate, ovate. In the S the pedicel is as long as the first and second funiclar joints together, pale at tip, the first funiclar joint very minute, the club 6-jointed, cylin- drical, the joints nearly of an equal length, about twice as long as thick, the last conic, one-half longer than the preceding. Thdrax ovoid, polished, the mesouotal furrows complete, distinct; the middle lobe posteriorly extending slightly upon the base of the scutellum; no tufts at the base of the lateral lobes. Scutellum transversely, convex, shining, very slightly pubescent. Metapleura covered with a whitish pubescenc e. Legs black or brown-black, the tarsi paler; sometimes the tip of anterior tibiae, knees, and all tarsi, honey- yellow. Abdomen as long as the head and thorax together, in the 9 pointed at tip, in the S rounded, the petiole and the rather deep foveolaj at base of the second segment striated. Habitat. — Fort Garland, Colo. Types in National Museum. Described from several specimens reared June 25, 1883, from a Ceci- domyiid gall on sage bush, collected by L. Bruner. PolygnotuB fillcornis, sp. uov. _ S 9. Length, 1 to 1.5" "'. Poli8hed,black,impunctured; head trans- verse, about 3 times as wide as long antero-posteriorly, the occiput faintly alutaceously sculptured, the lateral ocelli a little more than their width from the margin of the eye. Antennae 10-jointed, very long and slender, subclavate, reaching beyond themiddle of the abdomen ; pedicel slender, nearly as long as the first and second funiclar joints together; funiclar joints slender, and merging so gradually into the club joints that the club can scarcely be separated, the last four joints about 2J times as long as thick. Thorax polished, with two distinct furrows, mesopleura deeply impressed at the middle; scutellum highly convex; metathorax sparsely pubescent. Wings hyaline. Legs black, tips of anterior tibiae and the tarsi palebrownish or fuscous. Abdomen pointed-ovate, smooth, shining, striated at base, about as long or a little longer than the head and thorax together. Habitat. — District of Columbia. Types in Coll. Ashmead. PolygnotuB califomicuB, sp. nov. ' S 9 . Length, 1.2 to 1.5""". Very close to P. coloradensis, but with the following diflferences : The vertex posteriorly shows faint traces of a<;iculations ; in $ the first three fmuclar joints are very nearly of an equal 21899— No. 45 21 322 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. length, the third, slightly the thickest; iu the $ the second funiclar joint is stout and slightly curved, the club joints being not more than 1 J times as long as thick; the three middle joints outwardly subserrate, the last couically pointed, much longer than the preceding; the legs are black, the tip of anterior tibije and tarsi fuscous, while the wings are slightly smoky. IIabitat. — San Francisco and. Alameda, Cal. Types in National Museum. Described from many specimens, reared by A. Koebele, January 10 and 23, 1883, and July 10 and December 17 and 19, 1885, from a Cecido- myiid gall found on Baccharis pilularis. PLATYGASTBR Latreille. Gen. Cms. et Ins., iv, p. 31 (1809) ; Furster Hym. Stu«l., n, p. 108 (1856). (Type P. riificormH Latr.) " Head transverse, rarely subquadrate, the vertex somewhat narrowed, convex, the lateral ocelli usually far away from the eye margin but still nearer to it than to the front ocellus. Antenna^ 10-jointed, the scape subclavate, the liagellum ending in a 6-jointed, filiform club, the second joint in the male a little swollen and curved. Thorax ovat«, usually more elongated than in Polygnotus, the collar usually distinct, the mesonotal furrows distinct, the scutellum convex, unarmed, the metathorax short, carinated. Wings veinless, pubescent. Abdomen oblong oval or ovate, the petiole usually distinct, at least as long as wide, or a little longer, striated, the second segment very long, striate at base. Legs long, clavate; the tibiae slender, the tarsi very long, tlie hind tarsi being much longer than their tibiae. The genera Platygaster and Isocyhns are exceedingly closely allied, but the head in laocyhuH is more (juadrate and the lateral ocelli are nearer to the front ocellus than to the margin of the eye. I am not fully satisfied that they should be kjpt separate, although, so far, the position of the lateral ocelli seems sufficient to separate them. The head in Platygaster Herrickii Packard and the position of the ocelli is, however, very similar to Isocybus. TABLK OF SPECIES. FEMALES. Coxas l>lack. Legs yellow or golden yellow, antennie yellow, the club fuscons. Vertex rugose, Avitli raised lines in the middle; face closely puuctulate, with some transverse lines on lower part. Pedicel very long; first funiclar joint a little longer than wide, the second very long, twice as long as the first ; dub 6-jointod, the joints, except the last, transverse ,,,,,.,, P. GARY JS Ashm. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 323 Legs piceous or rufo-piceous, anterior tibite and base of middle and posterior tibisa ,: pale or honey-yellow. Head including face, finely, closely punctate. Pedicel about as long as the first two funiclar joints together, the first funiclar joint subtriaugular, small, the second much thicker and about as long as the longest club joint P. herkickii Pack. Head finely, closely punctate, the face with a large polished space in the middle, transversely striated on lower part. Pedicel not as long as the first two funiclar joints together, the first funiclar joint a little longer than thick, narrowed, the second thicker and slightly shorter than any of the following. .P. obscuripennis Ashm. MALES. Coxa) black. Legs yellow. Head finely rugoso-punctate. Face minutely punctate, with no grooved line; antennte brownish-yellow, the second funiclar joint as long as the long pedicel; club joints not hmger than thick P. cary.e Ashm. Face highly polished, with a central grooved line ; antennae brownish-yellow, the pedicel as long as the first and second funiclar joints together, the first very small, second a littie thickened and curved ; club joints oval-moniliforui, the last fusiform, nearly twice as long as the pre- ceding P. FLORIDEX8I8 Ashm. Legs piceous or rufo-piceous; antenna? black or brown-black. Head closely punctured or shagreeued. Face punctate, no transverse striae above antennie; club joints twice as long as thick, subpedicellate P. herrickii Pack. Face highly polished, with transverse striie above antennae. Second funiclar joint not swollen; club joints broader than long; wings dusky P. OBSCURIPENNIS Ashm. Second funiclar swollen ; wings hyaline. Club joints about twice as long as thick P. apiiidis, sp. nov. Club joints thrice as long as thick P. gracilis Ashm. Face transversely aciculated. MesoQotum and all pleura longitudinally striated.. P. aciculatcs, sp. nov. Platygaster caryae, sp. nov. i 9 . Length, 1.50 to 2""". Black, stainiug; vertex finely rugose, the face finely, closely punctate, with some transverse aciculations just above the insertion of the antenna\ Mandibles i)ale brown. AntennsB 10-jointed, yellow ; pedicel long, as long as the second funiclar joint, first elongated, a little shorter than the second; club 6-jointed, fuscous, the joints, except the last, wider than long, truncate at tip, rounded at base. Thorax finely punctulate, with two distinct furrows, the mid- dle lobe posteriorly with a slight central line. Scutellum transverse, convex. Metapleura and hind coxse beneath sericeous. Tegulse pice- ous. Wings hyaline. Legs bright yellow or brownish-yellow, the coxje black, the posterior femora and sometimes the tibiae dusky. Ab- domen oblong-oval, not longer than the thorax, the first segment and the second, ut base^ striated, sparsely pubescent. 324 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. In the S the anteiniii' are always pale, the club very slightly darker; the second funiclar joint elongated, somevrlat thickened and truncate at tip, the first only a little longer than thick; the club-joints close, not loosely joined, a litvle longer than thick. Habitat. — Jacksonville, Fla.; District of Colund)ia, and St. Louis, Mo. Types in Coll. Ashincad and Njitional Museum. The species is a common parasite «)f Cecidomyiid galls on hickory trees. Platygaster floridensis Asbiu. (PI. xin, Fi- .3, 9 .) Cau. Eut., XIX, i>. 132, $ . ; Cr. Syn. Hyni., p. 250. $ ? . Length, 1 to 1.5™'". Polished, black; liead transverse, as wide as the thorax, the vertex j)osteriorly aciculated, the face smooth, highly polished; mandibles yellowish. Antennai 10-jointed ; in $ pale brown- ish-yellow, the pedicel as long as the second funiclar joint, the first very small, closely joined to the second, the second swollen, slightly curved, truncate at tip, club C-jointed, the joints, except the last, submoniliform, the last cone-shaped, twice as long as the preceding. Thorax ovoid, smooth, the parapsidal furrows only slightly indicated; scutellum con- vex, slightly pubescent ; metapleura sericeous ; tegulae piceous. Wings hyaline, pubescent. Legs pale brownish-yellow, the hind coxae piceous or fuscous. Abdomen oval, not longer than the thorax, the petiole roughened, pubescent. In the $ the abdomen is a little longer, more pointed ; the antennte, except the club, yellow, club dark brown, 6- jointed, moniliform, the last joint fusiform; the pedicel is about as long as the first funiclar joint, but thicker; funiclar joints cylindrical, the first more than twice as long as thick, the second very much length- ened; legs yellowish, the hind coxie and femora and tibia? toward tips fuscous or blackish. Habitat. — Jacksonville, Fla. Types in Coll. Ashmead. Platygaster Herrickii Pack. '^."' -' Third Rep. U. S. Ent. Comm., p. 220; Riley, Proc. U. S. Nat. Mus., viii, p. 420, PI. XXIII., Fig. 6, (? ; Ashiii., Cau. Ent., xix, p. 132; Cress. Syn. Hym., p. 250. Aneurhynchus aneitrus Prov. Add. p. 176, , UNITED STATES NATIONAL MUSEUM. twice as long as thick, siibpedicellate. Thorax long-ovoid, smooth, shining, the furrows distinct; scutellum smooth, shining, convexly high; metapleura bare; tegulje black. Wings hyaline, nearly bare or but slightly pubescent. Legs brown-black, the tarsi paler, all the coxa' distinctly black. Abdomen oblongoval, nearly twice as wide as the thorax, the petiole rugose, subpubescent. Habitat. — Richfleld Springs, vN^. Y. Type in National Museum. Described from 1 S specimen, reared February 9, 1887, from aa Aphis on Chenopodium album. The broad abdomen and the length of the club Joints readily distinguish the species. The Aphis from which this species was bred was undoubtedly infested with Cecidomyious parasites, upon which the Platygasterid is a secondary parasite. Platygaster gracilis Ashiu. Can. Ent., xix, }>. 132; Cress. Syn. Hym., p. 250. S. Length, 1.5""". Black, .shining; the head posteriorly micro- scopically punctulate; face smooth, highly polished, with a slight cen- tral impressed line from the middle ocellus. Antennje 10-jointed, black ; pedicel long, yellowish at extreme tip ; first funidar joint .small, second somewhat swollen, slightly curved and shorter than the first club joint; club 6-jointed, cylindrical, the joints twice as long as thick. Thorax long-ovoid, smooth, shining, the furrows very distinct; meta- pleura sericerms; tegulie bliick. Wings long, hyaline, pubescent. Legs rust-brown, the anterior pair more yellowish, the middle and pos- terior femora and tibiie dusky toward tips; all coxa; black. Abdomen oblong-oval, narrowed toward base, as long as the thorax, the petiole more or less pubescent. Habitat. — Jacksonville, Fla. Type in Coll. Ashmead. Platygaster aciculatus, sp. nov. $ . Length, 1.4""". Black, shining; vertex, occiput, and cheeks finely shagreened; face transversely aciculated; sides of prothorax, mesono- tum, mesopleura beneath the wings and the metapleura all distinctly longitudinally aciculated ; the parapsides, scutellum, and the lower por- tion of mesopleura smooth, polished. Antennie 10-jointed, rufopiceous ; the flagellum subclavate ; pedicel longer and stouter than the first and second funiclar joints together, the latter scarcely longer than thick, the following joints to the last transverse, the last short, conic. Par- apsidal furrows deep, distinct. Scutellum elevated, cushion-shaped. Legs rufopiceous ; tips of anterior femora and their tibiae and the articulations of the middle legs yellowish. Wings clear hyaline, en- tiiely devoid of pubescence. Abdomen oval, smooth, polished, the MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPIDiE. 327 petiole not longer tlian thick, striated autl pubescent, the second seg- ment with some strise at base. Habitat. — Pennsylvania. Type in Berlin Museum. Described from a single specimen labeled "Penn., Zimmermann." ISOCYBUS Forster. Hyra. Stud., n, p. 108 (1856). (Type, I. (jrandis Nees.) Head quadrate or subquadrate, the vertex broad, the cheeks full, the occiput slightly emarginate, not or very delicately margined ; ocelli 3, triangularly arranged, the lateral being placed far away from the margin of the eye ; eyes ovate. AnteuDfe inserted at the clypeus, 10-jointed, the scape subclavate, slightly bent; in the $ the flagellum is subtiliform, the six terminal joints thicker than the preceding, submoniliform, the first and second ioints very slender; in the $ the second fiiniclar joint is usually slightly swollen and slightly curved. Thorax long-oval, the prothorax distinctly visible from above, the mesonotum with two distinct furrows (rarely indistinct or subobsolete), the scutellum convex or slightly elevated x>osteriorly, rounded and unarmed at apex, distinctly separated from the mesonotum by a furrow and with two oblique fovese in the furrow; meta thorax as long as wido. Front wings rather long, veinless, excei)t sometimes the submargiuiil vein, which is however always pale and never knobbed at tip ; usually it is only visible as a hyaline streak. Abdomen oval, ovate, or oblong-oval, usually as long as the head and thorax united; the first segment is longer than wide, iiigose or striated, the second, very large, occupying two-thirds of the surface, the follow- ing segments all short. - . Legs rather long, the femora strongly clavate. - . TABLE OF SPECIES. ^ — u FEMALES. Mesonotum •without furrows 2 Mesouotuni with distiuct furrows. Coxm black. Legs and antennie, except club, pale brownish or honey yellow. Pedicel as long as the first fuuiclar joint, the second funiclar joint shorter than the first I. nigricijivus Ashm. Pedicel shorter than first funiclar joint. Pleural piece beneath the anterior wing smooth, not striated. I. PALLIFES Sayi Pleural piece beneath the anterior wing striated I. canadensis Prov. 2. Legs and anteunas, except the club, bright yellow. Abdomen nearly twice as long as the hetul and thorax united. I. LONGIVENTRIS Ashm. 328 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. MALES. Flagellnm brownish-yellow or pale 3 Flagelluui brown. Pedicel and second funiclar joint equal, the first shorter. Pleural piece beneath the anterior wing smooth, net striated; terminal club joint only i longer than the penultimate I. ni«riclavu8 Ashm. 2. Pedicel a little shorter than the second funiclar joint. Pleural piece beneath the anterior uing smooth, not striated ; terminal club joint twice as long as the penultimate ; first funiclar joint twice as long as thick P. PALLIPES Say. Pleural piece beneath the anterior wing striated ; terminal club joint not twice as long as the penultimate; first funiclar joint as wide as long. P. CANADENSIS PrOV. laooybus nlgriolavus Ashm. Bull. No. 1, Col. Biol. Assoc, p. 10. 9 . Length, 3.4 to 4""". Black, closely, finely punctate, the face ru- gulose. Head subquadrate, the occiput concave. AntennsB 10-jointed, brownish-yellow, the 6 terminal joints, constituting the club, black; the pedicel is more than twice as long as thick, the two following funiclar joints a little shorter, cylindric, the second obliquely truncate at tip, a little shorter than the first; the joints of the club a little stouter and a little longer than thick, the last being the longest and less than twice as long as thick ; parapsidal grooves distinct, converging but not quite meet- ing posteriorly. Scutellum convex, sparsely covered with a fuscous pu- bescence, and separated from the mesonotum by a transverse furrow at base. The mesopleura alone smooth and shining, with a large, deep fovea on the disk. Metapleura and metathorax rather densely pubes- cent, the former divided by a longitudinal grooved line or impression. Legs brownish-yellow; all coxie black. Abdomen a little longer than the head and thorax together, polished, the petiole roughened, pubes- cent, and about one-third longer than wide. Wings dusky hyaline, pubescent. The 3 differs in having the second funiclar joint distinctly longer than the first, tlie club being jialer, with the joints about twice as loag as thick. Habitat. — Greeley, Colo. , ' r Types in Coll. Ashmead. Described from several specimens. Isocybus pallipes Say. (PI. XIII, Fig. 5, F.) iPlatygoBter pallipes Say, Lee. Ed. Say., Vol. 1, p. 383; Ashm. Can. Est., xix, p. • 132; Cr. Syn. Hym., p. 250. $ 9 . Length, 'd.b""^. Black, very finely, closely punctate ; legs honey- yellow, the coxae black, pubescent; thorax long, the mesonotum with 2 distinct furrows; mesopleura polished, not striated posteriorly; meta- MONOGRAPH OP THE NORTH AMERICAN PROCTOTRVPID^. 329 thorax Avith .a tjiooved central ridge, the pleura pubescent. Antennje lOjoiutedj in the living in fungi. The genera are not numerous, and may be recognized by the aid of the following synoptical table: TABLE OF GENERA. FEMALES. Abdomen terminating in a styhis. Wingless 2 Winged; maxillary palpi 4-jointed, long, the last joint linear. Parapsidal furrows distinct DisoGMUs Forster. Parapsidal furrows wanting Proctotrypks Latr. 2. Maxillary palpi 3-jointed, short, the last joint subclavate. Metathorax smooth CoDRUS Jurine. "'■-■•'''■ -'"'" MALES. ''■ .■^' Abdomen terminating in two prongs; winged. Maxillary palpi 4 jointed, long, the last joint linear. Parapsidal furrows distinct Disogmus Forster. Parapsidal furrows wanting Proctotrypes Latr. Maxillary palpi 3-jointed; short, tho last joint subclavate. Metathorax smooth Codrus Jurine. DISOGMUS Forster. Hym. Stud., ii, p. 99 (1856). (Type D. areolator Hal.) (Pl. XIII, Fig. 6, $ .) Head transverse or subquadrate. Antennae 13-jointed, long, the joints cylindrical, pubescent, or pilose^ some of the joints in the male sometimes dentate. MONOORAPH OF THE NORTH AMERICAN PROCTOTRYHI)^. 333 Miindihh'H conical. Maxillary palpi 4 Jd. Thorax lon^, the prothorax rounded before, the niesonotnm with two deep furrowH, the nietathorax areolate«l. Front wings with an oblong stigma, the marginal cell rather large. Abdomen much as in ProctotrypeH, the cauda usually shorter and more slentler. Legs as in Proctotrifpeg, except that the tibial spurs are smaller. Distinguished from Proctotrypex by the distinct mesonotal furrows, the dilated second joint of the maxillary i)alpi, and the shape of the stigma. The genus is uukuowD, as yet, out of the Euro|)ean launa. PROCTOTRYPES Latr. Pr^c, p. 108 (1796); Forster, Hym. Stud., ii, p. 99-,— 1 Serphus Schrank, Scbrift. d. Berl. Naturf. Fr., i (1780). (Type P. gravidator Linn.) Head transverse or quadrate, the occiput margined; ocelli 3, promi- nent, in a triangle, rather close together; eyes ovate or long-oval. Antennje inserted on the front between the eyes, 13-jointed with a ring-joint; the scape is short, oval; the pedicel very minute, annular, more or less hidden within the scape and only visible as a ring-joint, hence the genus has been described Jis having but 12-joint€d antenna?; the flagellar joints vary from long cylindrical joints to short, or monil- iform joints, and sometimes in the males some of the joints are dentate. Mandibles acute at tips, edentate. Maxillary palpi long, 4-jointed, the last joint linear; labial palpi 3-jointed, the last joint fusiform. Thorax elongate, the prothorax always visible, depressed above and l)roduced into a neck anteriorly; mesouotum long, highly convex, without furrows, scutellum convex, foveolated at base; metathorax longer than high, sloping or obtusely rounded posteriorly and produced beyond the insertion of the coxj« ; spiracles oval or linear. Fiont wings with a triangular stigma at about two-thirds the length of the wing with a distinct but very short marginal cell, its length rarely more than half the length of the stigma; costal cell closed; all other cells and nervures entirely, or subobsoletely, obliterated; if present indicated only by fuscous streaks. Abdomen petiolated, ovate, slightly compressed, the petiole short, the second segment very large occupying most of its surface, in "the 9 terminating in a long cauda; in $ ending in two prongs or spines. Legs long, slender, the femora slightly swollen; tibial spurs 1, 2, 2; taS-si long, slender; claws long, curved, simple. 334 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Our species in this genus axe numerous, but may be readily deter- mined by the aid of the following table: TABLE OF SPECIES. Head quadrate 6 Head transverse. Head and thorax black*. .:.. 3 Head and thorax pale or rufons, the metathorax sometimes black, wings sub- fuscous, the venation distinct. Metathorax coarsely rugose, with longitudinal raised lines, but withoiit a distinct central longitudinal carina; cauda as long as the abdomen. P. CAUDATU8 Say. Metathorax coarsely rugose, not longitudinally striated, but with a distinct central longitudinal carina ; cauda half the length of abdomen. P. PALLiDus Say. 2. Abdomen black 3 Abdomen rufons or honey yellow, the apex or petiole alone black. Metathorax rugose without a distinct central longitudinal carina. Rugosities longitudinal g P. caudatus Say. Rugosities not longitudinal i P. kufigaster Prov. Metathorax rugose, with a distinct longitudinal carina. . • All coxs« black. Petiole not as long as thick. Four terminal abdominal segments black g P. terminalis, sp. noT. Three terminal abdominal segments black g P. Linkllii, sp. nov. All coxiE pale. Petiole twice as long as thick. The sixth abdominal segment dusky P. melliventris Ashm. Petiole not as long as thick. Four or five terminal abdominal segments black (P. terminalis. ) 3. The discoidal nervures more or less distinct by fuscous streaks. Coxae black or black basally. Metathorax coarsely rugose with a central carina; antennae with joints 1 to 5 dentate. $ P. californicus Holmgr. Metathorax coarsely rugose, but without a central carina; antennje simple, (? P. OBLIQUUS, sp. nov. The discoidal nervures entirely wanting. ' Marginal cell always short 4 Marginal cell large, as long as the stigma. Lege, including coxae, pale yellow, the inner posterior tibial spur nearly as long as the basal joint of the tarsi, g 9 P. flavipes Prov. 4. Cauda short, not or scarcely one-third the length of abdomen 5 Cauda as long as abdomen. > ^ Legs, including coxa;, yellow, clypeus and mandibles light rufous. P. CLYPEATUS, sp. nov. 5. Metanotum with 3 carinas, inclosing 2 large smooth areas above ; apex and sides rugose. Coxae black or dusky above. • Antenna) brown, not extending to apex of thorax, basal two or three yellow. P. ABRDPTA Say. Coxaet pale. Middle carina of metathorax ending at the superior edge of the rounded pos- terior face. * MONOGRAPH OF THE NORTH AMERICAN PROCTOTRUPID^. 335 AnteunjE houey yellow, slightly dusky at apex and reaching the bas*^ of the abdomen; secouO flagellar joint about two-thirds the length of the first, about 2^ times as long as thick, the four following joints equal, as long as the second; cauda short P. obsoletus Say. Middle keel extending to the base of the petiole. Second flagellar joint half the length of the first, 2^ times as long as thick, the following joints, except the last subequal; cauda short. P. Belfragki, sp. nov. Metanotum on each side of the median keel rugose. Middle keel ending at the superior edge of the posterior face. Second flagellar joint thrice as long as thick, two-thirds the length of first, =,. following joints except the last gradually shortening cauda short. ^ , P. TEXANUS sp. nov. •t" Middle keel extending to the base of the petiole. Second flagellar joint 4 times as long as thick; abdomen ending in two spines, ^ P. cabolinensis, sj). nov. 6. Head with a frontal carina between the antennae. Metathorax not twice as long as high 7 Metathorax twice as long as high. Head a little longer than wide. Antenna' and legs rufous, the coxjp black basally. Antenna' longer than the head and thorax, the first flagellar joint ono- third longer than the second, the others at leant thrice as long as thick, 9 P. LoxGiCEi's, sp. n^v. 7. Antenna; and legs, unless otherwise mentioned, rufous or reddish yellow, coxie more or less dusky basally. Head a little larger than wide; antenuiP brown. First flagellar joint not longer than the second, shorter than the scape, the others about twice as long as thick, the last twice as long as the penultimate, $ P. canadensis, sp. nov. Head not longer than wide. Firet flagellar joint, not or scarcely longer than the second, the others three times as long as thick, 9- (Coxa; sometimes wholly pale.) I*. siMULANs, sp. nov. First flagellar joint distinctly longer than the second. Flagellar joints 2 to 6 at least thrice as long as thick, 9 • P. MEDius, sp. nov. Flagellar joints 3 to 10 only a little longer than thick, 9 • P. QUADIUCEPS, sp. nov. All coxa' black, the femora piceous. Antennai slightly thickened towards apex, dusky, the first flagellar joint one-third longer than the second, joints 2 to 10 scarcely longer than thick, 9 P. FEMORATUS, sp. nov. Proctotrypes caudatus Say. {PI. XIII, Fig. 7, 9.) Lee. Ed. Say's Works, I, p. 21; Ashm., Ent. Am., iii, p. 98; Cress., Syn. Hyin., p. 248. P. crennJatue Patton, Can. Ent., xi, p. 64 (1879); Ashm. loc. cit., p. 99; Cr. loc. -'-^ cit. (supra), p. 248. 3 9 . Length, 7 to 10 """. Ovii)ositor as loug as or a little longer than the alMiomeu. Reddish testaceous; metathorax black, upper part of mesopleura and the sutures often black; I'ead and thorax smooth, shin- ing; collar a little wrinkled or grooved at sides; metathorax elongated, rouuded behind, longitudinally rugulose and reticulated with coarse 336 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. pniictures; a row of crenate punctures along the liind margin of the mesopleura. Antenna^ 13-Jointed, black, the basal joint reddish, robust, partially inclosing the small second joint. AV'ings subfuscous, the nerv- ures fuscous, the marginal cell very short, about one-fourth the length of the stigma, the internal venation distinct as fuscous streaks. Ab- domen not as long as the thorax, the ])etiole very short, grooved, black; the second segment at base with a median furrow, and three grooves on either side; terebra fully as long as the abdomen, a little curved, longitudially striated ahmg the sides. In the $ the head and thorax are most frequently black, although sometimes more or less piceous or reddish, the coxa* black or dusky, the tarsi most frequently fuscous or at least tinged, the abdomen dusky at apex and ending in two short prcmgs; otherwise as in the 9 , Habitat. — United States generally. Specimens in National Museum, lioyal Berlin Museum, Coll. Ameri- can Entomological Society, and Coll. Ashmead. A common species, somewhat variable in size and color. I have seen Patton's type of P. cremiJntm in Coll. American Entomological Society, and there is no doubt of its being a synonym of this species. Dr. Clarence M. Weed has sent me quite a large series collected in Ohio, and I have seen specimens from various paits ol the country. Proctotrypea peillidus Say. Lee. Ed. Say's Works, I, p. 382; idem., ii, p. 725; Asbni.Eat. Am., iii, p. 99; Cress. Syn. Hym.,p.248. $ 9 . Length, 6 to 8""". Eeddish-testaceous, ch)sely resembling P. caudaUm, but with the metathorax more finely rugose, with a median carina, the sculpture not longitudinal, the anteniue Avholly testaceous or brown, the second abdominal segment with fine stria' at extreme base. In the S only the nieso and metapleura are blackish, the coxa' pale, the tarsi not dusky, apex of abdomen very slightly dusky, often concolo- rous with the rest of the abdomen, while the prongs are shorter than in caudatvH. HABITAT. — United States. • Specimens in Coll. American Entimudogical Society, National Museum, and Coll. Ashmead. Proctotrypes rufigaster Prov. Nat. Can., xii, p. 263; Faun. p:nt. Can., p. 561, €tiole, extreme apex of second aud foHowing segments black,, Antenna' hmg, cylin- drical, black, the basal joint ruft)us beneath. Thorax smooth; collar at sides, mesopleura beneath the teguhe aud anteriorly and posteriorly, MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPIDJE. 337 striated ; metathorax coarsely rugose, without a median carina. Wings subbyaline, as in P. caudatm. Petiole short, fluted, rugose above. Habitat. — Ottawa, Canada. - Types in Coll. Provancher, Ashmead, and Harrington. Proctotrypea terminalis, sp. nov. $. Length, 5.5 to 6.5"'™. Head, antennae, and thorax entirely black; legs rufous, the coxje black; second abdominal segment, except the apex, red. Antenn.ne extending to middle of abdomen, slender, cyliu:- drical, the flagellar joints all long, pubescent. Prothorax at sides anteriorly, mesopleura beneath the tegulse anteriorly and at posterior margin striated or wrinkled ; metathorax rugose, with a slight median carina. Wings as in P. caudatus Say. Petiole very short, fluted. Hind tibial spur less than one-third the length of the basal tarsal joint, Habitat. — Washington, D. C, and Columbus, Ohio, Types in National Museum and Coll. Ashmead. My specimens were presented to me by Dr. 0. M. Weed, Proctotrypea Liiie]lii, sp. nov. ■ S . Length, 4""". Closely allied to P. terminalis, agreeing with it in color and sculpture xcept that only the 3 terminal abdominal joints are black, the metatliorax more coarsly rugose, with the median carina quite distinct and extending from base to apex, while the hind tarsi are slightly dusky, the tibial spur being one-third the length of the basal tarsal joint. The wings s"^ hyaline, the margimal cell nearly obsolete, not as long as the width of the radius, the latter prolonged into the disk of the wing with a small fuscous spot at its origin. Habitat. — Long Island. Type in Coll. Ashmead. Described from a single specimen collected by Mr. Martin Linell. Proctotrypea melliventria Ashm. Ent. Am., iii, p. 99 '""'. Tolished black ; clypeus and mandibles i)ale rufous; legs, including coxa?, yellowish; ovipositor longer than the abdomen, the basal two thirds reddish yel- low. Antennje pale brownish-yellow, not longer than the thorax, the first flagellar joint a little longer than the second, joints 2 and 3 about equal, fourth slightly shorter, the following to the last about twice as long as thick, the last one-half longer than the penultimate, ovate. Metathorax rugose, with two smooth areas at base above. Wings hya- line, the discoidal nervures wanting; stigma large, brown-black; mar- ginal cell less than one-half the length of the stigma. Tibial spurs of posterior legs about one-half the length of the basal tarsal joint. Ab- domen polished black, about as long as the thorax, the petiole scarcely apparent, second segment at extreme base with a long foveola on either side. Habitat. — Ithaca, N. Y. Type in Coll. Ashmead. Described from a single specimen received from Mr. F. H. Chitten- den, who informs me he reared it October 15, 1884, from a large yel- low, rather woody, fast-growing tree fungus, from which Melandryid, Mycetophagid, Staphylinid and Scaphidiid beetles were obtained. Proctotrypea abruptus Say. Bost. Jonr., i, p. 278 9; Lee. Ed. Say's Works, ii, 725; Asbni. Eut. Am., in, p. 98; Cress. Syn. Hym. p. 248. 9 . Length, 2.5 to 3""". Polished black ; mandibles black or piceous ; legs reddish yellow, the coxje sometimes black or black toward base ; ovipositor about ^ the length of the abdomen or very slightly longer than the basal joint of hind tarsi. Antennae brown, not longer than the thorax, slightly thickened toward base, the basal joint or some- times the 3 or 4 basal joints, yellow; first flagellar joint about one-half longer than the second, or the second joint is two-thii'ds the length of 340 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. the first, the following joints to the last very gradually shortea'ng, the penultimate being but slightly longer than thick, the last being twice as long as the penultimate, fusiform. Metathorax rugose, with 3 carinre, inclosing two large smooth areas at base. Abdomen as long as the thorax, black, shining, the ovipositor about ^ its length. Wings hyaline, without discoidal nervures, the stigma large, the mar- ginal cell ^ its length, not petiolate at base. Habitat, — Jacksonville, Fla.; Virginia, and Indiana. Specimens are in the National Museum, Coll. American Entomo- logical Society, and Coll. Ashmead. Proctotrypes obsoletus Say. Boat. Jour., i, p. 277, 9 ; Lee. Ed. Say, ii, p. 725 ; Ashm. Ent. Am., iii, p.98 ; Cress. Syn, Hyni., p. 248. 5 . Length, 4""", Polished black ; antenna) brownish-yellow ; mandibles yellowish; legs reddish-yellow; wings hyaline. Antenna) 13-jointed, very slightly thickened towards tips, second flagellar joint two thirds the length of the first, the four following equal, about as long as the second, 2^ times as long as thick, the terminal joint fusiform, almost as long as the two preceding joints together, or fully as long as the first. Metathorax rugose, the middle carina extending to the posterior face. Abdomen longer than the head and thorax united, emarginate at base, the petiole extremely short, the cauda very slightly longer than the basal joint of hind tarsi. In the male the antenna) are filiform, pale brownish, the first flagellar joint as long as the scape, the joints very slightly increasing in length from the second, broken off from the sixth. Habitat. — District of Columbia and Indiana. Specimens in National Museum and Coll. Ashmead. A single specimen of what I believe to be this species was beared by Prof. Comstock, December 9, 1879, from Stelidota strigosa. Proctotrypes Belfragei, sp. nov. 9 , Length, 5°"". Polished black, with a sparse fuscous down. Head transverse, thrice as wide as thick antero-posteriorly ; palpi pale; man- dibles rufo-piceous, Autennre 13-jointed, pale brown, darker towards tips, extending to tegula), cylindrical, the scape oval, the pedicel an- nular, the first and the last flagellar joints equal, the joints after the first very gradually shortening, the three preceding the last not more than 1 J times longer than thick. Metathorax at sides coarsely rugose, the disk smooth, shining, witli 3 carin{e,the middle of which extends to the apex, the lateral abbrt ited. Tegulfe and legs reddish yellow, the posterior coxa) behind black; tibial spurs short. Wings hyaline, the venation, except costal nervure, piceous-black ; the marginal cell is very short, one-third the length of the stigma; no traces of nervures in MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 341 the discoidiil region. Abdomen black, polished, the petiole very short, the base of second segment with some raised lines; cauda short, im- pdnctured, curved, very slightly longer than the basal joint of the hind tarsi. Habitat.— Texas. Type in Coll. National Museum. Described from a single specimen in Belfrage collection. Proctotrypes tezanus, sp. nov. 9. Length, 3""". Polished black; mandibles, palpi, and legs, in* eluding coxse, yellow; antennae longer than the thorax, slender, fili- form, brownish -yellow, pubescent; first funicle joint slightly longer than the second, the following joints to the last very gradually short- ening, the penultimate being about 4 times as lontr as thick, the last about one-half longer than the i)enultimate. Metathorax finely rugose, with a median carina extending to apex. Inner spur of posterior tibiae about one-half the length of the basal joint of tarsi. Wings hyaline, the stigma brown, the marginal cell about one-third the length of the stigma, petiolated at base. Abdomen a little shorter than the thorax, black, shining, the petiole distinct, fully as long as thick, fluted, second segment at extreme base striated ; prongs very short. Habitat. — Texas. Type in Coll. Ashmead. Described from a single specimen. Proctotrj^es carolinensia, sp. nov. S . Length, 5 """ Polished black. Head twice as wide as thick an- tero-posteriorly with a frontal carina extending from the front ocellus to between the base of the antennae. Mandibles rufous, the tips black. Palpi long, yellowish. Antennae 13-jointed, filiform, brown-black, the scape yellow ; the flagellar joints very gradually shortening to the last, the last equal with the second, the first joint is the longest and a little more than 4 times as long as thick. Metathorax rugose, rounded oft' posteriorly with a single central longitudinal carina extending quite to its apex. Tegulae yellowish. Wings hyaline, the venation brown- black, the marginal cell short, less than one-half the length of the stigma. Legs yellow; the coxae behind at base dusky; the tibit« and tarsi are long, about of an equal length; the posterior tibial spurs not quite half the length of the basal tarsal joint. Abdomen black, pol- ished, not longer than the thorax, composed of five segments, petiole distinctly grooved, second segment at base grooved, terminal segment ending in two prongs. Habitat. — North Carolina. Type in National Museum. 342 BULLETIN 4r., UNITED STATES NATIONAL MUSEUM. Proototrypes longiceps, ap. nov. 9. Length, 7""". Polished black; antennfc yellowish, the apical loints a little dusky, the first flagellar joint the longest, the following to the last slightly shortening, the penultimate being scarcely 3 times as long as thick, the last one-half longer than ths preceding; palpi yellowish ; legs reddish-yellow, the coxje slightly dusky basally. Meta- thorax twice as long as high, finely rugulose, smoother above, with a median carina. Wings hyaline, the discoidal nervures visible as fuscous streaks, the stigma fuscous, the marginal cell one-third the length of the stigma, petiolated. Abdomen black, shining, longer than the head and thorax together, distinctly petiolated, the petiole more than twice as long as thi'k, finely striated; ovipositor not longer than the basal joint of hind tarsi. The femora are swollen, the tibia? sub- clavate, the inner spur of posterior tibite scarcely one-third the length of the basal tarsal joint. Habitat. — Ottawa, Canada. Type in Coll. Ashmead. Described from a single specimen received from Mr. W. Hague Har- rington. Proctotrypes canadensis, sp. nov. 9 . Length, 3""". Polished black; antennae brown, the first flagellar joint not longer than the second, shorter than the scape, the following joints, except the last, about 2J times as long as thick, the last fully twice as long as the penultimate; legs reddish-yellow, the coxje dusky basally. Metathorax a little longer than high, rugose, smooth on dor- sum toward base, with a median carina. Wings hyaline, without dis- coidal nervures, the stigma yellowish, the marginal cell less than half the length of the stigma, petiolated. Abdomen black, shining, not longer than the thorax, the petiole scarcely as long as thick, rugose, the second segment at base with numerous stria: , ovipositor very short, two-thirds the length of the basal joint of hind tarsi. The femora are not so much swollen, the tibiie long and slender, the inner spur of hind tibae not more than one-fourth the length of the basal tarsal joint. Habitat. — Ottawa, Canada. Type in Coll. Ashmead. . Described from a single specimen, received from Mr. W. Hague Har- rington. Its smaller size, shorter metathorax and ovipositor, relative length of the antenna! joints and the shorter tibial spurs, easily sepa- rate the species. Proctotrypes simnlans, sp. nov. 9 . Length, 4""". Polished black, antennae rufous, the first flagellar joint scarcely longer than the second, but as long as the scape, the fol- lowing joints after the third about 2J times as long as thick, the last less than twice as long as the penultimate; legs, including coxsb, reddish- MONOGRAPH OF THE NOUTII AMERICAN PROCTOTRYriD^.. 343 yellow. Motiitliorax U times as lon^ ns liipli, rupjose, smooth toward base above, with a median cariua. Win{«-8 hyaline, the discoidal ner- vures traceaole .as fuscous streaks, stigma brown, the marginal cell less than half the length of the stigma, petiolated. Abdomen black, polished) about as long as the thorax, i)etiolated, the petiole not longer than thick, striated, extreme base of second segment striated, ovipositor not longer than the basal joint of hind tarsi. Habitat. — Arlington, Va. Type in Coll. Ashmead. Described from a single specimen captured by myself. Since this was written I have received another specimen, taken by Mr. E. A. Schwarz, at Fort Pendleton, W. Va., agreeing in every particular with the above description, except the coxie are C(>ncolorous with the legs. Proototrypes medius, np. nov. 9 . Length, 5.5""". Polished, blaalpi whitish or pale yellowish ; meta- thorax scarcely longer than high, rugose, with a median carina and two large, smooth areas on either side of it, inclosed at sides by delicate lateral carinae. Antennae rubust, filiform, reddish -brown, scarcely longer than the head and thorax together, the 3 basal joints yellowish, the first flagellar joint scarcely as long as the last or very little longer than the second. Wings hyaline, the discoidal nervures subobsolete) S44 BULLETIN 45, UNITED STATES NATIONAL MUKEUM, . stigma brown, the inarginul cell petiolated, ©ne-tliird the length of the Htignia. Abdomen poliislu'd, black, not longer than the head and thorax together, the petiole not as long as wide, striated, second segment with sulci at base; ovipositor not longer than the basal joint of hind tarsi. Habitat. — New Jersey. Tyi)o in Coil. Ashmead. Described from a single specimeh, Proctotrypes femoratus, sp. nov. 5 . Length, 2.1""". Polished black ; legs yellowish, the coxje black ttr piceous, the femora swollen, piceous or rufo-piceous; inner spur of hind tibiffi one-third the length of the basal tarsal joint; palpi yellow- ish; metathorax not longer than high, closely punctulate, the dorsum etnoothand polished, with a median carina. Anteniu-e brown, not longer than the head and thorax together, slightly thickened toward the tips, the scape piceous, pedicel yellow ; the first flagellar joint is two-thiids the length of the last joint, or very little loiger than the second, the joints after the second scarcely longet than thick. Wings hyaline, the dis- coidal nervures entirely wanting, the stigma brown-black, the marginal ceJl petiolated one-third the length of the stigma. Abdomen polished, black, not longer than the head and thorax together; the petiole not as long as thick, rugose, secand segment striated above at extreme base; ovipositor scarcely longer than the basal joint of hind tarsi. Habitat. — Wyomiug. Type in Coll. Ashmead. Described from a single specimen obtained through Mr. H. F. Wick- CODRUS Jurine. Hym., p. 308 (1807); Thorns. Ofv., 1857, p. 421. (Type C, apterof/ynu8, Hal.) (PI. xiii, Fig. 8, 9') Head sub quadrate. Antenna? 13-jointed, in 2 very slightly thickened toward the tips; in S setaceous, pubescent, the flagellar joints longer. Mandibles acute at tips, edentate. Maxillary palpi short, 3-jointed, the last joint subclavate; labial palpi very short, 2-jointed. Thorax elongate, the prothorax narrowed and rounded before, meso- notum highly convex, without furrows, metathorax a little longer than high, slightly depressed above, smooth and shining. Front wings with a subtriaugular stigma and a very minute marginal cell, without traces of nervures in the discoidal region ; the 9 apterous. Abdomen much as in Proctotrypes, the dorsum subdepressed, and the Cauda very short. Legs as in Proctotrypes. MONOGRAPH OF THE NORTH AMERICAN rROCTOTRYPID.K. 34^ The short '{jointed iiiaxilhiry palpi aiwl the snbdepressed smooth met- athorax distinj^iiish tliis j^eiius from Proctotrypen and DitsogmuH. No species is known from North America. Subfamily IX.— BELYTINiE. Head transverse or subglobose. Ocelli 3, in a triangle, rarely want- ing. Eyes most fre({uently hairy. Man>. .....7 Anteunii> 15-Jointelilii|ue iin^le; aiiteiiiiio clavato, inoiiilit'orin, tlio tirHt fiiuiclar Joint obly a littlu louger tliau thick and much HiuuUer than tho jiedicel. AcLisTA ForHt«^r. Stif^al vein very short, with an nncns, mari^inal vein as long as the basal nervure, niunilihlcH couica], not rostriforui; siape at tip produced intoa littlo Hpinc; ])alpi4-j<>inted Synacra Korster. 6. Mesonotnm with 2 fiirrowH; marginal cell long, open; antennae clavate-nionili- form, the lirst funiclur joint slightly longer than the peilicel PSILOMMA Font. Mesonotnm without furrows ISMARUS Hal. 7. Ocelli wanting; winglosM Anommath'M Furster. Ocelli present. Marginal cell distinct, closed; antennsc tiliform or Huhclavate. Anectata Forster. Marginal cull scarcely diHcerniblo or wanting; autcunic Hubclavatc-nioniliform^ ptibescent, the first fiiniclar joint smaller than the pedicel. Pantolyta Forst. MALKH. Petiole of abdomen not, or scarcely, longer than the Uiotathorax 9 Petiole of abdomen almost twice as Umg a^ the mctathorax. Marginal vein twice as long as tho marginal cell Macroiivnnis Forst. Marginal vein much larger than the stigmal and about as long as the marginal cell. Second abdominal segment compressed laterally; jtetiole smooth above. Antennai filiform, the scape as long as the lirst funiclar joint, the latter strongly emarginated at base Lept< itiiAPTUs Fiirst. Autennse filiform, pubescent, the scape not as long as the first funiclar joint, the latter slightly emarginated at base Miota Forst. Becond abdominal segment not compressed laterally, tho abdomen becoming more flattened behind the segment; the petiole above more or less furrowed; scape longer than the first funiclar joint. CiXBTUs Jnrine. Marginal vein as long as, or a little longer than, tho stigmal, but much shortt^r than the marginal cell ; mandibles falcate Xexotoma Forst. 2. Middle carina of nietathorax not divided 3 Middle carina of metathorax divided or absent. Marginal vein scarcely longer than the stigmal, marginal cell long, postmarginal vein greatly lengthened; antenme filiform, all the joints long, cylin- dric, tho first funiclar joint emarginate at base Bklyta .Jnrine 3. Postscntellum with a strong spine Oxylabis Forster. Postscntellum without a spine. Eyes not hairy 4 Eyes hairy. Marginal cell closed. Scape with the apical margin on one side produced into a tooth, AcROPiESTA P'orst. Scape not produced on one side into a tooth. Marginal vein not or scarcely longer than the first abscissa of radius, the latter oblique. Last ventral segment very straight and punctured. Anterior tibise normal Ankctata Forst. Anterior tibise bent, with a median spined process Zygota Forst. Last ventral segment somewhat bent, not punctured.. Pantoclis Forst. 348 BULLETIN 15, UNITED STATES NATIONAL MUSEUM. - Miii'giiiiil vi'iu lit least twice as long as tlm first abscissa of radius, the lat- ter straight, in a right angle with the costa or only slightly oblique. Zelotypa Forst. Marginal cell open, or wanting. Marginal cell wanting. Basal vein distinct; antennae filiform, pnbeacent, the first flagellar joint twice as long as the pedicel, slightly eniarginate at base. Pantolyta Fiirst. Marginal cell more or leas distinctly iiresent. Marginal cell much lengthened; marginal vein hardly longer than the • ■ first abscissa of radius; antennte filiform pubescent, all the joints lengthened, the first flagellar joint emargiuate at base; anterior tibia* strongly bent, outwardly produced towards one side into a tooth or spine i.. ...... Zygota Forst. Marginal cell not nmch lengthened; first abscissa of radius very oblique; an*;erior tibiic simple; antenna-, thick, filiform, densely pubescent, the first flagellar joint not longer than the second, emarginate at base. AcLiSTA Forst. 4. Mesonotum with two furrows; marginal cell long, open. Antenna-, stout, filiform, the first flagellar joint longer than the second, the second slightly emarginate at base, the joints after second scarcely twice .ip long as thick Psii.OMJfA Forst. Mesonotum without furrows. Antenna; filiform, the first flagellar joint shorter than the second. .Ismauus HaL MACROHYNNIS Forster. Hym, Stud., ii, p. 131 (1856). A geuus unknown to me, and tlie type, if still in existence, has never been described. Dr. Forster in speaking of it says : In the genus Maei-ohi/nnis we have befoKi us, on account of its peculiar venation, a very striking form which can scarcely be confounded with any other. The marginal nervure, for instance, is fully twice as long as the rather short marginal cell, and both combined present exactly the appearance of a plow-share of simple construction ; while the backward directed bi'anch of the radius, if continued would cross the basal nervure. All joints in the female aiiteuuic are ehmgate, cylindrical, and so strongly length- ened as to be readily confounded with those of the male were it not for the excision of the first flagellar joint and the pointed abdomen, which betray its sex. The scape is short in both sexes; in the female at the most as long as the first joint of the flagellnm, while in the male it is usually somewhat shorter. The lateral angles of the metanotum are slightly projecting. The abdominal petiole is longer than the metanotum, although not abnormally long, and slightly furrowed above. The second segment of the abdomen which viewed laterally appears to be slightly compressed, together with the remaining segments, have a pear-shaped appearance i>articularly pronounced in the case of the female, while in I he male the tip of the abdomen ia curved downward, giving the apex rather a more l iunt appearance. The sutures between the segments are very fine and the segments themselves are strongly shortened, so that they are almost transversely linear. .^ DIPHORA Forster. •^- Hym. Stud., II, p. 130 (1856). (Type I>. Wi'stwoodii Forster.) This genus is likewise unknown to me. Dr. Forster, op. cit., p. 141, mentions as the tyiJe, Diphora Weatwoodiiy but gives no descriptiou MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 349 and it has not since, to my knowledge, been described. In his remarks he has the following to say respecting the genus: If we consider, alone, the shape of the sintennio, we have undoubtedly in the genns Diphora the most remarkable form in he Belytoidie. Not only does the scape attaiu a considerable length, but the first ilagellar joint is also as long as the scape, while the other joints, with the exception of the last, are very short, being even broader than long, on account of which the flagelluni hasanioniliform appeaiiance; we might therefore easily be led to the conclusion that the autenniB had a double ilagcllum. The mesonotal furrows are deep and distinct. The abdomen is composed of three segments, the petiole is short and stout, the second segment very large, while the third, which is separated from the second by a distinct suture, attains the length of the petiole, and from its apex projects a short point or nipple, as if from a tube. The marginal cell of the wings is completely closed; the marginal vein very short, even shorter than the stigmal branch, which forms a very acute angle. The post- marginal vein extends but a short distance beyond the apex of the marginal cell. The marginal cell is strongly elongated aud narrow, the radius of which has a short blurred and but slightly curved stump, which, in its extension, does not cross the basal nervure, LEPTORHAPTUS Fi.rster. Hym. Stud., ii, p. 131. (1856.) (Type L, ahbreviatusVuist.) Head transverse, the occiput slightly impressed at the middle, not or indistinctly margined; ocelli 3, prominent, close together in a tri- angle; eyes rounded, hairy. Antennae inserted on a frontal prominence, long, filiform, cylindrical in both sexes, seldom a little thickened toward tips ; in 9 15-jointed, the scape very long, slender, reaching far above the ocelli, as long as the first two or tbree flagellar joints t -/ ' • (Type ./. (o/ZarisForst.) Head transverse, or subglobose, the vertex convex, theocciput straight, margined ; ocelli 3, very small, arranged iu a triangle ; eyes oval, sparsely ])ubcscent. Anteunie inserted on a frontal prominence; in ? 15-jointed, subcla- vate, subraoniliform, the scape slightly bent, extending beyond the ocelli, i)edicel rounded, first fnniclar joint about twice as long as thick, subcyliudric, narrowed at base, truncate at tip, the joints beyond all sub- 21899— ^'o. 45 23 354 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. moniliforin, tho last very largi', fusifonn, as loiiji as the two pieeediug joints together; in S 14 joiiitetl, filiform, the tirst Hagellar joint not, or scarcely, eniarginate at base. Maxillary piilpi, 4-jointe(l; labial palpi, S-Jointed. INIandibles short, acnte, with a small tooth within. Thorax subov()i united. Legs clavate, jiubescent; the middle and hind tibial spurs short and weak ; the tarsi long, slender, the basal joint more than twice the length of the second. Acropiesta flavicauda, sp. nov. (PI. XIV, Fij;. 3, 9.) $. Length, 3""'. Black, shining, the last abdominal segment yel- low. Antenna' la-jointed, extending to apex of metathorax, incras- sated toward tips, rufous, the last joint large, oblong, dark fuseous; first Hagellar joint twice as long as the second, the joints beyond moniliforni. Thorax with two furrows, the seutellum with a large deep fovea. Metathorax carinated, the sides covered with a fuscous pubescence. Tegula' yellowish. Wings subhyaline, the venation fuscous, the marginal vein two-thirds the length of the closed marginal cell, the first branch of the radius slightly oblibose, black; tluu'ax and abdomen brownish pieeous; scape, pedicel, and legs brownish yellow. The whole bo*ly is polished, impuuctured. and pubescent; the frontal promiuen(;e large; antenine 15-jointed, moniliforni, the first flagellar joint twice as long as the second, cylindric, joints 2 to 5 round, from here to the last transverse-raoniliform. Thorax with two almost par- allel furrows, very slightly converging toward each other posteriorly; seutellum convex, with a deep quadrate fovea at base; mesopleura MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID.E. 355 with a smooth cross furrow on the «lisk; metathorax cariiiated. Abdomen longer than the head and thorax together, conic-ovate, the hist segment conical, as long as the third, fourth, tifth, and sixth seg- ments united, and yellowish, the ovipositor issuing from its tip; petiole scarcely twice as long as wide, fluted. Wings not fully developed, extending only to the base of the second abdominal segment, subfus- cous and very pubescent. Habitat. — Marquette, 31ich. Type in Coll. Ashmead. Described from a single specimen, taken at the above xdace by Mr. E. A. Schwarz. BELYTA Junne. . Hym., p. 311 (1807) ; Forstt-r, Ilyin. Stud., ii. p. 130, 133 (1856). (Type B. hicolor Jur.) Head su globose, the occiput narrowed, rounded; ocelli small, in a triangle; eyes rounded, hair5% Autenn.T inserted on a very i)rominent frontal projection ; in 9 15- jointed, stout, nioniliform or subnioniliform, the scape stout, reaching far above the head, the pedicel rounded, the first flagellar joint obconic, the following joints to last moniliform or transverse-moniliform, usually increasiuginsizetowardapex, the last oblong or ovate; iu $ 14-jointed long, filiform, the scape extending bevond the ocelli, pedicel rounded, the first flagellar joint about two-thirds the length of the scape, i)ro- foundly excised at base, the following shorter, cylindrical, 3 or 4 times larger than thick. Maxillary palpi a-jointed, long; labial palpi short, 3-joiuted. Thorax suboxoid, depressed, the prothorax distinct from abo'e, rounded before, the angles obtuse; mesonotum with 2 deep furrows; scutellum not very prominent, subconvex, with a profound fovea at base, and without lateral groove v^ lines; metathorax with the middle carina not extending to the apex, interrupted or broken, sometimes wanting, posterior angles prominent, acute. Front wings pubescent, with a basal cell, and usually, but not always, with an open or imperfectly formed marginal cell; the mar- ginal vein short; the first branch of radius short, oblique, with a hook or slight branch at tip; hind wings with one cell. Abdomen ovate or oblong oval, depressed, 8-jointed, the petiole stout, seldom twice as long as thick, fluted, the second segment very large, with a longitudinal sulcus at base; the following segments all short, the last subtriangular. Legs rather stout, clavate, pilose, the middle and hind tibiae sub- clavate; tibial spurs 1, 2, 2, the last two short, but stout; tarsi 5jointed, the basal joint nearly 3 times as long as the second. 356 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. TABLE OF SPECIES. FKMALE8. Marginal cell closed. Wings fuscons «)r snbfiiscoiis. Coxa- blaik, legs honey -yellow. Flagelluni fuscous H. monilicornxs Aslim. Coxa' and legs lirownish-yellow. Flagelluni hrowuish-ycUow, the three apical joints dusky. Metathorax without a niediau carina B. fhomai.is sp. iiov. Coxa> and legs rufous. Metathorax with a forked luetlian cariua B. ERYTHUoPrs sp. uov. Marginal cell open. Wings hyaline. Metathorax with a forked median keel B. texaxa sp. uov. Belyta monilicoruis Ashui. Bnll. No. 1, Col. Biol. Assoc, p. 12. 9 . Length, 3"'". llobust. black, sliiuiug, covered with a fine fuscous pubescence. Eyes bristly. Mandibles piceous. Antenna' 15-jointed, the flagellar Joints after the tirst nioniliforni, the first joint about twice as loDg as the pedicel; the scape reddish brown, the rest of the an- tenna' dark fuscous. >Ies()m)tal furrows distinct, but not deeply im- pressed. Scutelhun w^th a large fovea at biise. Mesopleura ileeply impressed posteriorly. Metathorax truncate and squared off at apex. Legs dark honey yellow, the coxje black, the hind femora slightly dusky above in the middle. Abdomen about as long as the head and thorax together, smooth and polished : the petiole stout, a little longer than thick, grooved and hairy above; the second segment, which occupies the larger portion of the body of the abdomen, has a median longitudi- nal furrow at base; apex surrounded by si)arse, whitish hairs. Wings subhyaliiie, pubescent, the marginal cell closed, about twice as long as the marginal vein, the first branch of the radius or stigmal vein oblique. HABITAT.— West CliflF, Col. Type 9 in Coll. Ashmead. Described from a specimen received from T. D. A. Cockerell. Belyta frontalis, sp. nov. . (PI. XIV, Fig. 4, 5.) ■ " > ■ 9. Length, 3'"'". Polished black, the abdomen brownish; frontal prominence very large, half the length of the head. Antennie 15- joiuted, incrassated toward tips, moniliforni, brownish yellow, the two or three aincal joints fu.scous; scape very long, stout; first flagellar joint twice the length of the pedicel, the following joints to the last moniliform, the last oblong. Mandibles, pali)i, and legs pale brownish yellow. Metathorax without a median carina, but with delicate lateral cariuai, the disk polished, the apex margined, the lateral angles acute. Wings subhyaliiie, the venation pale, the marginal vein one-third MONOGRAl'H OF THE NORTH AMKIJICAN PKOCTOTRYPID.E. 357 loiifier tliiiu tlio obliciuo first branch of the nulins, the niarjjiiial cell closed, a little loii<;er than the marginal vein. Petiole s.tout, scarcely longer than the nietathorax, tinted. ^ Habitat, — Delaware. Tyi)e ? in Coll. American Entomoloj>ical Society. Described from a single specimen. Belyta erythropus sp. nov. V , Length, 3.4""". Black, shining, sparsely i)ilo8e; antennae and legs rufous or reddish-yellow, the tlag«'llnin infuscated, the liind coxa^ black basally. Antenna* 1.5-Jointed, moniliforni, the first flagellar joint one-third longer than the pedicel, the joints beyond transverse- moniliforni, very slightly increasing in size toward the apex, the last conic. Seutellura with a transverse fovea at base. Metathorax with the middle carina forked at the middle; angles bluntly toothed. Wings subfuscons; tegnhe rufous; nervures pale brown; the marginal vein is not longer than the short, closed marginal cell: the first branch of the radius or stignial vein oblique. Abdomen not longer th^u the thorax, the sides, apex and beneath, pilose; the petiole is stout, stri- ate, and finely rugose, a little longer than thick: the second segment with some grooved lines at base. Habitat. — Wisconsin. • Type 9 in Koyal Berlin Museum. Described from a single sjiecimen labeled simply, "Wisconsin, Kum- lin." Belyta texana, sp. uov. 9. Length, ;?.4"". Polished black; antennje rufous; legs reddish- yellow. Antenuie 15 jointed, stout, the first flagellar joint only a little longer than the pedicel, the joints beyond transverse- nnniiliforni, the last oval. Scutelluni flattened, with a deep fovea at base. Metathorax finely rugose, the middle keel forked before the middle, the posterior angles produced. Teguliie rufous. Wings hyaline, the marginal cell oi^en, the marginal vein longer than the stigmal, the latter with a hook. Abdomen scarcely as long as the head and thorax together; the petiole short, stout, rugose, scarcely longer than thick, and without any raised lines; base of second segment striated. Habitat. — Texas. ■ -,:>■• -5. Type 9 in Coll. American Entomological Society. Described fiom a single specimen. ^ ;> si ;+■ : OXVLABIS Foi-ster. - Hym. Stud., ii, p. 130 (1«56). Lyteba Thorns. Ofv., 1858, p. 180. (Type O. hisulca Nees.) Head transverse, a little wider than the thorax, the occiput straight, not margined.; ocelli 3, prominent, siibtriangularly arranged; eyes oval, hairy. 358 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Anteniiiv inserted on a frontal pi'oininenct'; in 9 ir)-jointe(l, siibmo- uiliforiu; the scape subrobust, extending sli<>htly beyond the ocelli, cyl- iudric; pedicel oblonji; first Hagellar joint longer, obeonic; the joints after the fourth, nioniliforni or snbnioniliforni, the last ovate; in S 14- jointed, long, filifonn. the lirst Hagellar joint about two-thirds the length of the scape, the following a little shorter, all covered with a short pubescence. Maxillary palpi long, r)-jointed, the last joint tiie longest; labial palpi short, 3- jointed. Mandibles short, curved, acute at tij), with a small tooth within. Thorax as in Bdytu, but with a large, acute spine at base of nieta- thorax, the scutelUini highly convex, with a furrow at sides, the pos- terior angles of the metathorax acute. Front wings pubescent, with a basal cell and a closed marginal cell, rarely a little open toward apex. The marginal cell is always distinctly longer than the marginal vein, the stigraal being more or less oblique; hind wings witli one cell. Abdomen oval or oblong-oval, the petiole stout, fluted, a little longer than thick (longer an|i, 130, 138 (1856). Uoad trail svorso, or subfjU those, tlie occiimt nmiido*!; ocelli small, trial I Jill hilly arraiifjed on the vertex; eyes oval, pubeseeiit. Aiiteniiie inserted on a frontal itroniiner.ce; in 9 15 Jointed, ttlifonn, or at tlie most snbhlitoriii, rarely slightly thickened at tii»s, the scape long, cylindrical, reaching considerably beyond th«> ocelli; pedicel small, lomided, the lust Hagellar Joint from one halt' to two tiiirds the length of the s<'ape; the following Joints <'ylindrical, be<'oiiiing (piite short before the last, tin; last a little longer than the penultinuate: it is rare that the Joints are moiiiliform; in S 14-Joiiited, very long, cylindrical, sub- setaceons, piibesct'iit, the scape slender, a dttle h>iig( i- than the first flagellar Joint; i»edice! ronnded; first flagellar Joint excised at base, the following Joints five or more times longer than thi.■ Marfriiial cell a little more than twice the lenf^th of the marginal vein. C. KUFICORNI8 Sp. nov. Antenna' filiform, the flagellnm fuscous. Second flagellar joint two-thirds the length of the first; marginal coll 3 times the length of the marginal vein; body of abdomen dull rnfons ^ basall y C. macrodyctium Aahm. Second and first flagellar Joints equal; leys honey-yellow ; abdomen black. Marginal cell twice as long as the marginal vein; flagellar joints 13 and 14 e(iual C. MELLIPKS Say Marginal coll thrice as long as the marginal vein; flagellar joint 13 dis- tinctly longer than 14 C. SIMILIS sp. nov. 360 BULLETIN 45, UNITED STATES NATIONAL Ml'SEUM. MAI.KS. AiitoniiH' nifoiis, fnscons tonanl tips; Iojjh riifons. Miir^iual cell tliricr as loii^; uh ttic niai'^iiiiil vein; alxloinei) rnfnns, the third seg- ment no* more tlian twice as long as tlio I'oiirtli. V. MArRODYCTIt'M AbIiIII. Marginal cell not thricb the len>;th of the niar^iinal vein; alxloinen black, the third Nc^nient ul)oiit I tiinc!) iih long as t!ie fourth. C. CALIFORNTCU8 Sp. DOV. ClnetUB mficornis, ap. nov. 9. Lenfftb, 3""". Poliahed, black; aiiteima' rufous; tejjui.T and k'fra brownish yellow. Antenna' ir» jointe, hut I h.ivt' no doubt it is properly correhitetl with ii . Xvnoloma iinllipiM AhIiiii. Can. Knt., XIX, p. VMJ. Cnetus mellipes Cr. Syn. Ilyiii., p. 2.">(>. 9. Length, 2.5""". Polished black, shining, pubescent; anteunae fuscous, the Mrst two joints lioney-yellow; legs honey-yellow. An- tenna' If)- jointed, (iliforin, reaching to the niiddle of the abdomen; scape more than twice as long as the first flagellar Joint; first and second tlagellar Joints ecpuil, .'{ times as long as the pedicel; the follow- ing Joints to eighth gradually shortening; from here to the last much shorter, the thirteenth and fourteenth being only a little longer than thick, ecjual, and slu)rterthan the last which is conic. Wings hyaline, the marginal cell only twice the length of the marginal vein, the venaticm fuscous. Abdomen one third longer thau the head and tiiorax to- gether, the petiole b'3ing mor«' than twice as long as the metathorax, tinted; the body of abdomen is smooth, shining, covered with .sparse white hairs along the sides, at tip and beneath, the first .segment occu- pying nearly the whole surfavs; scutelluiu convex, depressed, and with a deep fovea at base; mclathorax as long as high, carinated, truncate, and margined posteriorly. Front wings pubescent, th(^ margin.al fringe sl;ort, a basal and a clo ^ed marginal cell, the marginal vein never as long as the marginal cell, MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 3G3 nsually about half as loiig; stigmal veiu or lirst brauch of the radius slightly obli<]ue. Abdomeu conic-ovate, the tij) with a slight upward curve, the petiole as long as, or a little longer than, the nietathorax, distinctly tinted or striated; the third segment is short, but usually longer than the fourth. Legs much as in Cinetus, but with the tibial s})urs distinct. This genus is at once recognized by the long falcate mandibles. The species known to me may be separated as ft)llows: Head, thorax, and petiole black. 8cape, pedicel, and legs yellow ," X. x anthopus sp. nov. Head, except clypeiis, l)laek; thorax and abdomen dull rufous. Antenna' and legs brownish-yeilow,? X. mandibii.auis sp. nov. Brownish ; vertex and disk of thorax blackish 9 X. x anthopus. Xeiiotoma xanthopus. sp. nov. S . Length, 2.4'""'. Polislied black, pubescent; the abdomeu reddish- brown; mandibles, palpi, two basal joints of antennas and legs bright yellow; tiagellum fuscous. Antenna' 15-Jointed, setaceous, the scape very little longer than the tirst tlagellar Joint; the first flagellar joint the longest, slightly excised at base, the joints beyond very slightlj^ shortening. Metathorax smooth, with a middle carina, the lateral cariucc irregular and broken, descending obliquely toward the posterior coxa^ Wings hyaline, the marginal cell fully two and a halt times as long as the marginal vein. Abdomeu as long as the head and thorax together, ]>ilose beneath, the petiole a little longer than the nietathorax with raised lines. $ . Length, 3""". Brownish, with a fuscous pubescence; vertex of head and disk (»f thorax blackish; antennn', mandibles, palpi, and legs yellow. Antenna' 15-jointed, filiform, a tie shorter than the body; scape more than tlirice as long as the first flagellar joint; pedicel rounded; first flagellar joint nearly tlirice as long as the pedicel, the joints beyond to sixth very gradually subecjual, joints from sixth to last hardly longer than thick. Abdomen a little longer tliau the head and thorax together, the petiole twice as long as the metathorax, fluted, the t^ird segment one-third longer ihan the fourth, the second, with faint punctures laterally otherwise it agrets with i . Habitat. — New Jersey. Types in Coll. Ashmead. Described from 1 S and 1 9 specimen. Xeiiotoma maiidibularis, sp. nov. (PI. xiv, Fig. 7, 9 .) S 9. Length, 2.5'"'". Polished, i)ubescent; head black, the thorax and abdomen varies from a blackish or brown to dull rufous, more especially rufous in the S . Antenna' and legs pale brownish-yellow. Mandibles long, sickle sliaped, crossing and extending far beyond each other at tii>s. Eyes oval, vertical. Anteume in 9 15-jointed, filiform, 364 BULLETIN to, UNITED STATES NATIONAL MUSEUM. the first Hagellar joint thrice as long as the pedicel, the joints beyond to the nintli gradually shortened, joints tenth to thirteenth about equal, a little longer than thick; in ng as thick, rarely longer. Mandibles acute with a tooth within, slightly crossing each other at tips. Thorax as in Zelotypa, the posterior angles of metathorax often prominent. Front wings pubescent, with a basal cell and a small triangular closed marginal cell, the marginal vein short, rarely much longer than the first abscissa of the radius, the latter oblique. ^^ Abdomen ovate, more rarely oblong-oval, the petiole short, the second segmen toccupying niost of the surface, with a median longi- tudinal sulcus at base, the following segments short, about equal; in the $ the petiole is hmger, about three times as long as thick. Legs pubescent, the tibial spurs short bat distinct. MONOGRAPH OF THE NORTH AMERICAN PHOCTOTEYPID^E. 367 TABLE OF SPECIES. Antemiii' not black 2 Antcnuil- black or picecnis-black. Himl coxa; black. Lej?.s rufous P. Montana, sp. nov. Femora and tibia' more or less black or piceous P. picipks, ep. nov. 2. ilarginal vein shorter than the stigmal 3 Marj^inal vein longer than the stigmal. Legs yellowish. Scape ami ]ieili times as long as the nuirginal vein, the first branch of radius «d)li<|ue, twice as long as the marginal vein. Legs pale rufous or brownish-yellow. Antenna' rufous, dusky towards tips, the first llagellar joint twice as long as the pedicel, the f. uov. S 5. Lenj-th, 2.5 to 3.2""". Polislu'd black, jmbesoeiit; legs rufous, the hind coxa' bhivk. Antenna' in $ 15Jointet(lic('llate, the last one-shaped; in S 14-jointed, long, setaceons, the ii.st flagellar joint two-thirds tiie length of the scape, excised towards base, the following joints subeqiuil, the penultimate twice as long as thick, the last one- third longer. Meiathorax with .") keels, a central, and two i>arallel lateral keels; the lateral angles prominent. Abdouu'U conic-ovate, a little depressed; the jyetiolc as long as the metathorax, strongly fluted; the third, fonrth, and fifth segments very slmrt, e(jual; the sixth slightly longer; the seventh more than twice as long as the sixth and slightly longer than the eighth. Habitat. — Santa t'rnz Mountains. California and Coh)ralack, and covered with a fuscous pubescence; antenn;e, man ' T- - - 370 BULLLTIN 45, UNITED STATKS NATIONAL MLSELM. Paiitoclis analis, »]>. uov. (IM. XV, Fiji. L'. 9.) 9. Lcnjftli, 3.2""". Polished hhuk, sparsely pubescent; iiiitennte nitons, bliU'kish toward tijK; lej^s brownish yellow. The frontal proini- nen«-e beneath is ruj^oso punctate. Antenna' 1") jointed, thickened to- ward tips, inonilitbrm ; the scajte rather stout, twice as lonj- as the pedi- eel, the joints beyond nionilitbrni, alter the second, transversenioniliforin, the last eonie, a little lonj;er than the penultimate. Mesoi)leura ini- l»ress«'d with a laij^e tbveii. Te^uhe yellowish. VVinji's snbhyaline, the marginal cell about tive tinu's as long as the marginal vein, tin; lat- ter shorter than the obliijue tirst branch of the radius. Metathorax carinated. Abdomen rntb-piceous. the two last segnuMits reddish- yellow, the seventh and eighth segments about equal, as long as the third, Iburth, and tifth united; the spiracles distinct; the petiole stout, as hmg as the metathorax, tinted. Habitat. — Washington, J). C. Type in Coll. Ashmead. Described from a single specimen captured by E. A. Schwarz. Paiitoclis ruficauda, s|>. iiov. 5. Length, .'{""'. Polished black; the api'X of abdonu'U with long whitt^ hairs, the last segment conically pointed, reddish: iintenna' aud legs brownish-yellow, the former dusky toward tijis. Antenna' 15- jointed, tiliform nioniliform, the tirst tiagellar Joint twice as long as the pedicel, thi^ Joints b<'yond to the last, eijual, nionililbrm, scarcely wider thau long, the last cone-shaped, a little longer than the penultimate; metathtnax carinated. TeguLe yellow. Wings snbhyaline, the nuir- ginal cell hardly 5 tim«'S as long as the marginal vein, the latter very slightly shorter thau the oblique tirst branch of the radius. Abdo- men conic-ovate, black, highly polished, the last segment conically l)ointed, twice as long as the seventh, the sixth a little shorter than the seventh, but twice as long as the fifth, the petiole as long as the metathorax, not longer than thick, fluted. Habitat. — Arlington, Va. Type in (.'oil. Ashmead. Described from escent; anteniue and legs bright yellow, the former after the first tiagellar Joint slightly fuscous; mandibles and clypeus rufous. Anteimie 15 jointed, subfiliform, the tirst flagellar joint two-thirds the length of the scape, or thrice as long- as the pedicel, the joints beyond to the seventh subequal, beyond slunt, not, or scarcely, hniger than thick. Metathorax carinated. Tegnla^ yel- low. Wings snbhyaline, the venation brown, the marginal cell 4 times as long as the marginal vein, the latter slightly shorter thau the oblique MONOGKArH OF THE NuKTH AMERICAN PROCTOTEYPID.E. 371 lirst l»ii»iila('k, the seventh abdominal sejxment is ti little longer tliuu the eighth, and the hitter is black, not rufous. Pantoclis rufescens, h]>. nov. 9. Lenjitli, .'i'"". Entirely brownish ])iceo'is; antenna' and legs, brownisliyellow. Antenna- ir» jointed, snbJiliforin-moniliform; tlie lirst Hagelhir joint twice as long as the ]>edirel, the joints beyond monili- form; after the third transverse-mouiliform, the last one third longer than the penultimate. INIetathorax short, carinated,the posterior angles sliglitly prominent. Wings subfuscous, the marginal cell LM times as long as the marginal vein, the latter slightly shorter than the ()bliqne tirst branth of the radius. Abdomen conic-ovate, the petiole U times as long as thick, fluted ; the segments, 3, 4, and 5 short, ecpnil ; the sixth a little longer, the seventh thrice as long as the sixth and a little shorter than the eighth. Habitat. — Texas. Type in (^oll. Ashmead. Described trom a single si)ecimeu. Pantoclis floridana, sp. nov. 9 . Length, 2.5'""'. Polished black, pubescent; antennjp, mandibles, teguhe, and legs brownish-yellow, the former dusky toward tips. An- tenna' l.~>-,jointed, tiliform nioniliform; the tirst flagellar joint slightly more than twice as long as the pedicel; the joints after the third eiiual, moniliform. Metathorax with 5 keels, the jmsterior angles not ])rom- inent. Wings subfuscous, the marginal cell thrice as lo'ig as the short mitrginal vein, the latter shorter than the oblique flrst branch of the radius. Abdomen oval; the ]>etiole about 1:^ times as long as thic JUijila iihdomhialh Noes.) Head transverse or subglobose; the occiput straight, delicately mar- gined behind; ocelli 3, arranged in a curved line, or subtriangularly arranged; eyes oval, hairy. Antenna' inserted on a frontal juominence; in (5 14-joiated, flliform; the sca])e rather short, extending scarcely beyond the ocelli; the first flagellar joint as long, or nearly as long, as the scape, deeply ex- cised at base; in 9 ir)-jointed,*thickened toward tips; the sc;M>e long MONOGRAPH OF THE NORTH AMKRICAN PUOCTOTRYPID/E. .'i73 and stout, reiu-hiuj; beyond the (hm'IH; tln^ hist tliiyelliu' Joint ob- conio, lon^'er than the pedi(iel; the, foUowiii}; joints tiansveise, sub- nioniliforui or pertbliat«'d; the hist ovate, eonical, or oblong. Maxilhiry palpi with joints li and 3 dilated. Thorax as in Zilofijpa, tln^ posterior an},des of metathorax promi- nent, acute, or toothed. Front winy:s pubescent, with a basal cell and a very lonj(, lanceolate marginal cell, which is usually open at tip; the marginal vein is short, not or scarcely longer than the stigmal or the first abscissa of the radius. Abdomen ovate, slightly pointed at tip; the petiole usually stout, a little longer than thick, tinted. Legs similar to Pautoclis, but the anterior tibiae in the ling the sides and at apex, an«l the venter, densely pubescent, the second segment laterally very inely punctate. Habitat. — Texas. Type in Coll. Ashmead. ACLISTA Foister. Hyni. Stud., ii, p. 128 (ISrifi). Head globose or subglobose, the cheeks usually full; ocelli 3, small, in a triangle, not i)ron)inent; eyes rounded, pubescent. Antenme inserted usually on a very prominent frontal projection; in 9 15-jointed, incrassated or clavate-moniliform; scape sUmt, reach- ing far above the ocelli; pedicel smaller than the first flagellar joint, the latter usually only a little longer than thick; the folh»wing joints all moniIif(u-m or transverse-submoniliform, sometimes slightly pedicel- late; in S long, filiform, 14-joiuted, covered with a short, dense pubes- MONOGUAPH OF THE NORTTI AMERICAN PROCTOTRVI'ID.E. 375 ceuco, the scape reaebing beyond the (K-elli, the i)e«licel small, aimuhir, or rouiide farrows; scntellnm snbconvex or flattened, Avith a large fovea at base; in<'tatho- rax short, carinated, the postcriin* angles prominent or acnte. Front wings pubescent, with a distinct basal cell and a short, open marginal cell; the marginal vein is nsnally very short; the tirst branch of radins short, obli(|ne, with a slight nncns from tlu^ tip; 5 sometimes apterons or subapterous. Abdomen ovate or conic, the iM'tiole longer tlian thick, a litthi swollen in the middle. Legs ]>nbescent or pilose, the femora clavate, the tibia> elavate or snbclavar*', tibial s[)nrs short but distinct, the basal joint of hind tarsi 3 or more limes longer than the second. TABLE OF SPECIES. Species black, or at least not eutiroly rufons or brownish 2 Species entin^ly brownish or rufous. Aiit»'!iii;i' and lc;is ]iah' brownish-yellow, the former iuerassated towiird tips, the iirst llaji,elhir, joint not lon.ner than the pedicel hut niueli slen- derer, the joints beyond n\oiiiliforin, jjradually increasing in size. Three terminal Joints pale; pcdit'el much stouter bnt not longer than thc^ lirst llagellar joint A. isfi'A, up. nov. Three terminal joints Idack; i)ediecl stouter and distinctly longer than the first tla;>,;llar joint A. KCFKscen.s, sp. nov. 2. Abdomen entirely bla>k or only slij^htly palo at tip 3 Abdomen brownish or rufous, or at least toward the biise. Antenna' int^rassated toward tips, mouilitorni, the first tlagellar joint longer than the jiedicel. Metathorax, petiole, and abdouien rufous, the second segment piceous J ( . nov. First flagellar joint a little longer than tht^ pedicel anetiole stout, as long as the nu'tathorax, rugose, with a furrow ahnig the sides. IlAlJITAT. — St. liOuis, Mo. Type in Coll. Ashmead. Aclista conica, ap. iiov. 9. Length, 2'""'. Polished black, nearly devoid of pubescence; antennae and legs rufous. Anteinne 15-jointed, clavate nioniliforin, the first flagellar joint nuich more slender but not longer than the pedicel, the joints beyond sub moniliform, transverse after the third, the ter- minal joint oval, longer than the penultimate. Metathorax carinated. Wings subhyaline, the marginal cell entirely wanting, the marginal vein more than thrice as long as thick, the first branch of radius short. Abdomen conic-ovate, the petiole short, not longer than thick, with faint raised lines but not distinctly fluted, the sixth and seventh seg- ments about equal, longer than the preceding segment. Habitat. — Arlington, Va. ■ Type in Coll. Ashmead. • Aclista rugosopetiolata, sp. nov. 9 . Length, 2.G"'". Polished black, pubescent; the thorax rather flat, the scutellum with two fovesi^ at base connected by a grooved line. Antenna', IS-jointed, very stout and incrassated, the scape nearly half the length of the flagellum, the first flagellar joint a little longer than the pedicel and as stout, the remaining joints all transverse-moniliform* the last oval. Metathorax rugose, carinated. Wings subhyaline, the marginal vein about thrice as long as thick, the stigmal vein short, oblique, ending in a hook. Abdomen long-oval, pilose toward tip and beneath, the petiole stout, longer than thick, rugose and opaque, with a (ihannel along the sides. Habitat. — Arlington, Va. Type iu Coll. Ashmead. 378 BULLETIN 4 -J, UNITED STATKS NATIONAL MUSEUM. Aclista califoruica, sp. uuv. 9. Leiiffth, 2.5""". Polished black, pubescent; antemiic black, the ])asal 5 joints rufous; leji's lufous, the hind co.xse black basally. An- tenna' 15-jointed, luonilitbini, the first tlag:cllar J()int twice tho lenjitii of the pedicel, the second shorter than the ])cdicel, the joints beyond moniliforni. Metathoraxcarinated, very pubescent. AVinjfs.subfnscons, the marginal vein about twice as long as thick, the stigiual short oblique with a hook at tij) (all that remains of the radius.) Abdomen obloug-oval, black, the tip and beneath sparsely pubescent, the petiole as long as the metathorax, strongly tinted. Habitat. — Santa Cruz Mountains, California. Tyi)e in Coll. Ashraead. Described from a single specimen. Aclista borealis, sp. iiov. 9. Length, 2.0""". Polished black, pui>escont; antenna^ and legs brownish-yellow. Anteniiic 1.")- jointed, tiliform-moniliform, the first flagellar joint one-third longer than tiie pedicel, the joints beyond the third, except the last, all of an e(inal size, moniliform, very slightly wider than long, tln^ last one thiid longer tiian the penultimate. Wings subfuscous, the marginal vein about as long as the stigmal, the latter oblique with a slight branch at tip. Abdomen pointed, ovate, black, shining and pubescent, the petiole as long as the metathorax, strongly fluted. Habitat. — Ottawa, ( 'anada. Type in Coll. Ashmeapti:on Hal.. Nsit. Hist. Rev., iv, p. 170 (1K57). Flead .subfile )bose, the occiput rounded, the ocelli '.i in a triangle; eyes oval, bare. Antennse in 5 incrassated toward tips, subnioniliforin, the scape lonjj, the pedii'el shorter than tlie first tiajiellarjoint, the joints beyond trans- verse inoniliform, the last oblon*'-; in i 14-jointed, lilifonn, the pedicel rcmndcd, the first tla{;inted, but bifid at tips. Thorax subovoid. the pronotuni anteriorly produced iuto a slight neck; uiesouotuui with two furrows; scutclluiu convex, with a i>rotbund fovea at base and a transver.se, punctate line before the apex; postscu- telluni flat, lugose; nietathorax carinated. Front wings pubescent, fringed, the marginal vein punctiform, the stignial short, with a long ra«(ius from itstij), fVn'ming a long, lanceolate marginal cell, which is open at tip. Abdomen conic-ovate, subde])ressed, tlie i)etiole long. Legs long, the femora swollen, clavatc, the tibia' subclavate, the tarsi shorter than their tibia* (except the anterior pair), the basal joint short, not twice as long as the sec(md. Forster indicated no type. Psilomma columbiaiium, sp. iiov. (PI. XV, Fig, r>, 9 ; «, (? anotnna.) B 9. Length, 3.G to 4""". Polished black ; an ten nfe and legs rufous; teguhne yellow. Antennje in 9 15-jointed,clavate subnioniliform, the tirst flagellar joint a little longer than the pedicel, the following to the last transverse-subraoniliform, the last the stoutest, conic; in 3 14-jointed, filiform, the pedicel small, round, the first flagellar joint the longest, about 3i times as long as the pedicel, the second slightly shorter, the renmining cup-shai)ed, loosely articulated. Thorax narrowed l)efore, with two broad furrows, the si'utellum foveated at base, the nietathorax subquadrate, rugose. Wings subfuscous, the marginal vein puncti- form, the fiist branch of radius very short, the second branch visible as a long fiisciuis streak, forming a very long, lanceolate, open marginal cell. Abdomen conic-ovate, i)ilose beneath and toward tip, black, smooth, and shining; the i)etiole long, finely roughened, witli a channel at the sides, t»' 'tnal segment luinctate. Habitat.— ington, D. C. Types in Co imead and !N^ational Museum. Described iroii 9 and 2 $ specimens. 380 BULLETIN 15, UNITED STATES NATIONAL MUSEUM. - ISMARUS Halidiiy. Nut. Hist. Rev., iv, p. IfiJt (1857). Entomiita H. Sehf., Num. Ent., ii. (Typ*' T- (lofHujer Curtis.) Head transverse, much wider than tlie thorax, the occiput rounded; ocelli 3, triangularly arrauj;ed; eyes rcumded, bare. Antenna? in 9 L~) jointed, subnioniliform; in S l4-jointed, filiform, the fourth joint excised at base. Maxillary palpi 4-jointed; labial palpi 3-jointed. Mandibles short, arcuate, bidentate. Thorax subovate, the pronotum visible from above, the anterior an gfles straight; mesonotuin without furrows; scutellum convex, mar- gined at sides and with a fovea at base; metathorax short, rugulose, the angles unarmed. Front wings pubescent, with a small, triangular, closed marginal cell and a basal cell; the marginal vein is longer than tlie marginal cell. Abdomen ovate or oval, the petiole short, only a little longer than thick, the secoiul segment large, occupying about half of the remain- ing surface, with a median sulcus at base, tlie following segments short, about equal. Legs moderate, pilose or ])ubescent, the hind tarsi not longer than their tibiae, the basal joint three times as long as the second. This genus is not found in our fauna. On PI. xv, Fig. (>, I figure the male of Ifunarus ruyulosiis Fiirst., to give our students some idea of the genus. ANOMMATITTM Ffirster. Hym. Stud., ii, pp. 130 ot 140 (1856). Head subglobose, without ocelli ; the eyes rounded, pubescent. Antenna? inserted on a frontal prominence, in 9 14-jointed, incras sated toward tips, the last joint strongly developed, nearly round, and much thicker than the penultimate. Thorax as in Aciista. Wings entiiely wanting. Abdomen ovate cr conic, the petiole a little longer than thick. Legs of moderate length, the femora clavate, the tarsi not especially long, joints 2 to 4 gradually subequal, the last joint as long as the two preceding; claws stout. The type of this genus is not mentioned by Forster and the genus is not yet recognized in our fauna. T^""" ANECT AT A Forster, ^^ ;--. 2i;_^!: Hym. Stud., n, p. 130 (1856). Head transverse or subglobose; ocelli 3, close together, in a triangle; eyes oval, pubescent. MONOOKAPH OF THE NORTH AMERICAN PKOCTOTllYriD^.. 381 Autennsp inserted ou a frontal prominence, 14 jointed, filiform in both sexes, or in 9 sometimes slij^btly incrassated toward tii>s, the joints, for the most part, moniliform or submonilifonn, the last conic or ovate; in the (? the joints are cylindrical, the first fia^ellar joint the longest and usually excised at base. Thorax as in Ciiiefiix. Wings pubescent, with a basal cell and a closed marginal s rcddish-ye'llow. Antoniiji' tlavatc-inonilifoiin, black, the tip of scapo and pedicel rufouH, 9 . Maifjiiial cell not twice asloiif^as tlic niarutinal vein.. A. camfohnica, sp. iiov. Antenna' lililorui, fuscons, base and tip of scape, pedicel, and base of first Hajj- ellar joint yellowi.sh, ^ . Marginal cell more than twice as long as the marginal vein. A. POLiTA, sp. nov. 2. Antenna- rnfons, fuscous toward tips. Antenna- tilifonu, subnroiiiliform, the first flagellar joint thrice as long as the pedicel, the following subeciual, the three preceding the last monili- form, 9 . Marginal cell twice as long as the marginal vein A. hirtikuoxs Ashm. Antenna- setaceous, fuscous, yellowish basally, the first flagellar joint a little shorter than the scai)e, excised at base, the joints beyond gradually shortening, the penultimate 2| times as long as thi(-k, enultiinate joint tiiri«*e as long as thick, the last slightly longer. Metathorax sin(K»th, shining, <'arinated. Wings subhyal'ne, the venation pale brown, tlie marginal cell 2h times as long as the marginal vein, the first branch of the radius very ol»li(|ue, a little shorter than the marginal vein. Abdonu'ii black, polishe. 130 (1K")<)). (T>»|»e Behjia hclerocera Hal.) Head sidtglobose, the face ])roduced into a ledge for the insertion of antenna"; ocelli minute; eyes rounded. Antenna' inserted on a frontal prominence; in 9 14-jointed sub- moniliform; the pedicel larger and stouter than the first flagellar joint; in S , filiform. Maxillary jtalpi, 5-jointcd; labial pali)i, .'i jointestritnrm. Thorax as in Aiiectata. Front wings pultescent, with a distinct basal cell, but without a mar- ginal cell; the marginal vein variable, punctiform, or as long as the l)asal nervur<'. The radius always short, l)ut slightly developed. Abdomen conic-ovate, the ]tetiole short. Legs as in Anectata, the femora and tibiae clavate, i)ilosc. This genus very closely resembles X*o////>e^yt Forster in the IHaprUnce^ but that genus has no basal cell in the hind wings. The following siMJcies is the only one as yet detected iu our fauna: Fautolyta bruniiea, np. nov. (PI. XVI, V\^. 1, 9.) 9. Length, 2'"'". Light brown to brownish yellow; antennae and legs pale brownish-yellow; eyes dark brown, rounded. Head globose, the face with a prominejit frontal ledge for the iuvsertion of anteuuai, the occiput rounded; nnmdibles subrostriform, conical, bifid at tips. Antennie four-fifths the length of the body, clavate, gradually incras- sated towards tips, pubescent, the joints, after the sixth, moniliform; scape long, cylindrical, slightly bent, and nearly half the length of the flagellum, the apical margin beneath produced into a miuute spine; pedicle oblong, stout; first funidar joint the slenderest and longest joint, obconical, about three times as long as thick at tip; second funiclar joint abcmt two-thirds the length of the first; the third stijl 384 BULLETIN 45, UNITED STATES NATIONAL MTSKIIM. sliortvr but stoiitci-; iill joints boyoiul iiioiiililoriii, yriidiially iiKicasinof in size. Thorax siihnvate, smooth, shiiiinji', tiapt'zoi dally narrowed anteriorly from the tefiuhe; mesonotum about aa lonj; as wide a<-ross the base, the i)arai)sidal furrows being distinct, the middle lobe at base beinj;' one-third shorter than at apex; seutellum deeply foveated at base; pped; the rarm or wanting; hind wings never with a basal cell, vein- less. Apterous forms frecpient. Abdcunen suV)petiolate, rarely Mitli a very long petiole, ovate, conic-ovate, or oblong-oval, composed of 7 or 8 segments, the second always large. Legs clavate, the tibial spurs 1, 2, 2, the middle and posterior i>airs usually weak; tarsi long, slender, 5 jointed, claws simple. This subfamily could only be confounded with the Hrlytina; but the 2-jointed labial palpi, the absence of a cell in the hind wings, and the less distinctly veined front wings readily separate it. The habitus, except in a few genera, is also quite different; the frontal promiiience is rarely so distinct, the antenme in the female are shorter, more dis- tinctly clavate, the venation in front Avings quite different, while the abdomen is, as a rule, less distinctly pointed, and most; frequently with a much shorter petiole. MONOGRAl'H OF THE NORTH AMKKICAN PKOCTOTRVPID.E. 385 The only yeiieia, i>rol)abl.v, that woiihl jiive the student troiihh^ in l>lacing, are iSi/nacrti and I'ohipeza. TXw first mentioned was oiij^jinally phioed by PTnster in tlie Ilrli/tinw, as the venation is more stronjrly de veloped than in any other Diapiiid, and the al)(h>men is shaped as in many of tiie Belytids, but there is no hosnl ct-ll in the hi ml irintfs. Litbonceiida Westw., Thes. Ent. Oxon., p. 171, is not included in the table of genera, as I believe it to b«^ a Cynipid genus. While comparatively little is yet known of the habits of the greater number of the Diaprina., from such as have beea reared we are justi- fied in stating the group is jiarasitic otdy on Dipterous larva*, as all carefully bred specimens, both in Europe and America, have been reared only from these insects. Piopria meUinovorjipha iJatz. is re- cohUmI as having been bred from ('rifpforhynchus hqntfhi, and EntomociH vordipennmYmstevhinn a spider's nest; but we know now that various Dipteia are frmnd in the burrows of Khynchophora and other wood- bi)in,i; the ajux of petiole; marginal iicrviire distinct; costal cell closed SriLoMiCiU's Wcstw. Abdomen rounex, the second segment with sulci at base; marginal ncrvure very short; costal cell usually open. 1IE.MILKXIS Forster 2. Biisal nervure wanting; stigmal nervure longer than the marginal. HiCMiLEXODKS Ashm., gen. nov. 3. Sulimargiual nervure not attaining the costa, ending in a stigma 5 Submarginal nervure attaining the costa. Wings with a hisal nervure 4 Wings without a basal nervure. ^lesonotum with 2 furrows. Clul> ■">- jointed Synacka Fiirster Club 4 -jointed (Jly tonota Fiirster 4. Mesonotum without furrows. ("lub abrui>t, li-jointcd; face keeled at the sides.. Tkopidopsis Ashm., gen. nov. Musonotum with 2 furrows. Club o-jointed liuorvi'A Forster 5. Mesonotum with 2 furrc ws. Stigma with a stigmal vein; abdomen witli S sulci at base. Ankukhynchus Westw. Stigma without a stigmal \ cin ; abdomen witli a single sulcus at base. Labolits llaliday MALKS. Antenna' 14 -jointed 3 Antenna' l.S-jointed. Mesonotum without furrows 2 Mesonotum with furrows. Metathorax armed at base with a curved spine. Flagellar joints very long, cylindrical Hoi'Loi'KiA, Ashm., gen. nov. Metathorax not arine«l at base with a curved spine. First flagellar joint not half as long as the secoml. Masai vein absent ; costal cell closed Pakamesius Westw. First flagellar joint as long or longer than the second. Jlescuiotuiri not longer than wide. Costal cell open; basal nervure present. Stigmal vein much longer than the marginal Hkmilkxis Forster. M«'sonotum longer than wide. Costal cell closed; basal nervure present. Abdomen with sulci at base Idiotv i-a Filrster. Abd(uuen without sulci at base Sl'iLOMlCKUS Westw. 2. Hasal newiin^ |)res<'nt; costal cell closed. Base of second segnn^nt overla]»]»ing the ap<'x of i»eti(de (Simi.oMICRUS.) Hasal nerv: .o absent; costal cell open or at least «»peu iit base. Flagellar joints long, cylindrical, pilose, the lirst longer than the second. Hkmilkxoiiks Ashm., gen. nov. 3. Submarginal vein not 'eacliiug the costa, ending in a stigma 4 Subuiiirgiual vein reaching the costa. iJasal nervure wanting. Mesonotum with 2 furrows. Eyes hairy Synacka Forster. Mesonotum without furrows. Flagellar joints elliptic-oval Tr(»I'II>oi\sis Ashm., gen. nov. 4. Stigma with a stigmal vein Aneukhvnchus Westw. MONOGKAPH OF THE NORTH AMERICAN rUOCTOTKYPID^E. 387 POLYPEZA Forsttr. Hym. Stud., ii, ]>. 123 (185fi). Head jjlobose, rounded before and behind, the occiput not margined; ocelli 3, triangularly arranged; eyes rounded, pubescent. Antennae 14-.jointed, inserted on a frontal prominence; in ? sub- moniliform, gradually incrassated toward tips; in ? filiform, the joints cylindrical. Mandibles subrostriforni, bidentate. Maxillary i)alpi 3 jointed: labial palpi 2-jointod. Thorax ovate, narrowed into a short rounded collar anteriorly; mes- onotuni with two furrows; scutellum rounded, convex, with a deep fovea at base; nietiithorax with a central longitudinal carina. Front wings pubescent, ciliated, the subinarginal nervure reaching the costa at about half its length, the marginal nervure distinct, post- marginal and stigmal nervures very minute, scarcely developed ; basal nervure distinct. Abdomen conic ovate, petiolated, the petiole as long as the metano- turn ; ovipositor prominent. Legs clavate, pilose, the tarsi fully as long or longer than the tibise, 5-jointed, the basal Joint of hind tarsi fully 3 times as long as the second. This genus is the only one in the tribe with 14-.jointed antenuai iu the $ and closely resembles a belytid, without a marginal cell. Polypeza Pergandei, sp. iiov. (PI. XVI. Fijj. 2, 9.) S 9. Length, 1 to 1.2""". Polished black; metathorax, petiole, and base and tip of abdomen dull rufous, or piceous. Antenna* in 9 14-jointed, submoniliform, gradually incrassated toward tips; pedicel longer ami thicker than the tirst flagellar Joint; second and third flagellar Joints shorter than the first, the Joints beyond monilifprm; in S 14-Jointed, long, flhform, fuscous, the first flagellar Joint tUrice as hmg a3 the jjedicel. Thorax with 2 distinct furrows; scutellum convex, with a deep de- pression at base ; metathora short, smooth, but bounded by a carina behind. Teguhe yellowish. Wings hyaline, pubescent, very broad, and with a long fringe at the margins; the submarginal vein reaches the costa a little before the middle of the wing; the marginal vein is rather long, linear; stigmal vein short, with an uncus at tip and a slight indication of a backward directed branch; basal cell distinct. Legs honey-yellow, the femora and tibia* slightly infuscated. Abdo- men conic-ovate, petiolated; the petiole twice as long as thick, stiiated; the second segment occupies most of the remaining surface; segments 3 to 6 very short, the seventh conically pointed, longer than segments 3 to « united. Habitat. — Arlington, Va. Types iu Coll. Ashmead. 388 BULT.ETI]S 4.-., UNITED STATES NATIONAL MUSEUM. Described from four specimens. This interest! 11 jLf species is dedicated to my friend Mr. Thco. Per- gaiide, to whom I am indebted for two (►f the four specimens. HOPIiOPRIA AsLni., gen. nov. (Type //. puUhripeinns Asbm. ) This o-enus is founded upon a' South American species in the Berlin Museum, and is clearly allied to Paramcsiim Westwood, but differs in having a curved acute spine at the base of the metathorax and in hav- ing only 4-,jointed maxillary palpi. The joints of the autennie are also much longer than any other Diaiuiid genus. H. pulchripennis, sp. nov. $. Length, about 4""". Black; antenna', legs, and abdomen ferru- ginous, the latter dusky at apex. Head opaque, tinely shagreened ; cheeks, prothorax, met; horax, and the petiole beneath, woolly. An- teun;c 13-jointed, longer than the body; the first Hagellar joint about as long as the scape, the second very slightly shorter, the following about equal, all cylindrical. Thorax smooth, shining, bisulcate; scutellum with two large deep fove;e at base; metathorax armed at base with a curved acute spine. Wings hyaline, with a large smoky blotch ex- tending from near the base to one-third the lengtli of the wing, having 4 rays; one ray extends to the stigma and another beyond this to the costal margin, and opposite these are the other two which extend to the hind margin; there is also a smoky spot at tlie ajjex of the wing. Habitat. — Bogota . Type iu Berlin Museum. HEMILEXIS Forstcr. Hym. Stud., ii, p. 123 (1856). Eniomacis Fiirst. loc cit., p. 121. (ilifphidoima Hal. Nat. Hist. Rev., iv, p. 172 (1857). Head transverse or subglobose, the occiput rounded, the cheeks bare; ocelli 3 small, in a triangle; eyes bare. AnteniiiB inserted on a slight frontal prominence, 13-jointed in b. i i sexes; in 9 submoniliform, incrassated toward tips or clavate; iu S lili form, the first and second luniclar joints elongate, the second the shorter and thicker, slightly curved, the following oval or oblong oval. Maxillary palpi o-joiuted. Thorax ovoid, the prothorax produced into a little neck anteriorly, scarcely visible from above; mesonotum short, rounded before with two furrows, tlie furrows sometimes abbreviated anteriorly, but rarely entirely wanting; scutellum with a moderately dee]> fovea at base; meta- thorax short, subemarginate. the angles not acute. Front wings pubescentj strongly ciliated and often emarginate at apex ; MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID.E. 389 tbesnbniargiual vein teriiiiuates in ji short orpunctiforin marginal vein Just before the middle of the wiug; and there is a distinct oblique stigma) vein, usually three times as long as the marginal, with som«'times a distinct backward directed branch; the costal cell is ojk'U ana the basal uervure is present, although faint or subobsolete. Abdomen hmg-oval, subtruncate or bnt slightly i)ointed at apex, the petiole in the ? is usually short, in the $ long, woolly, or i)ubescent; the second segment occupies most of the remaining surface and has sulci at base above. Legs davate, pubescent, or pilose, the basal joint of i>osterior tarsi twice as long as the second. Dr. Forster erected the genus Entomacis upon specimens with a " heart-shaped i)iece*' cut out of the apex of the front wing, but this character in itself will not hold to found a genus, and I have here joined it to Hemilexis, as I can find no other character to separate them. 1 have species with emarginate, slightly emarginate, and entire wings, but in all other essential characters, viz, the 13-jointed antenna' and two furrows on the mesonotum, they agree with Hemilexis, so that if I have properly identified these genera they should be united. Nothing is known of the parasitism of the genus, except what Yots- ter tells us: that he bred specimens of an Enfoitiacis from a sjjider's nest. In all ])robability the spider was already infested with a Dipter- ous parasite, Leucopis sp., and the Diapriid came from the Dipteron. Three species are known to me, separated as follows: Apex of wings iiiorc or less emargiiiiited, stignial vein hmger than marginal. Anteunit* yellow, giadn ally incrassated, mouilirorm, the last joint large, fusiform, fuscons. $ . Legs reddish-yellow; itetiole l»lack H. subemauginata, sp. nov. Antennie subclavate, snbnioniliform, the llagcllum fnscous. 9 . Legs anil petiole, honey -yellow H. mkllipktiolata, Ashm. Apex of wings entire, stigmal vein more? than twice as long as the marginal. Antennie tiliforni, fnscous, the first and second llagellar joints elongate, the second the shorter and ]»rodnced toward one side at apex, the following joints siibmoniliform. val, trnncate posteriorly, the petiole a little more than twice as long as thick, faintly striated. Habitat. — Santa Cruz Mountains, Oalifinnia. Tyi)es in Coll. xVshmead. HemilexJs brevicornis >Sa.v. PkHiis brerieornis Say., Lpc. Ed. Say, i, p. 1?21. Diaprin hrericornin Ashin., Cuii. Eur., xix, )». T96; Cress. .Syii. Ilyin., )t. 251. I51.T(k, polished, iiiiniarulate; tiltiii' iind tarsi ]»i<<'ons. Inhabits St. Peters river. AnteniiiB short, first Joint ranch elonjjated, second joint lonfjer than the remaining ones, which an^ snbcylindric-qnadrnte; niandil)]es pale, testaceous; tliorax convex, rounded, two faint impressed lines each side eonverjjing to the scutel and on the posterior margin two indistinct dull whitish s)>ots; scutel elevated, convex, feet dark, piceous; thijihs nearly black; wings, costal nervure indistinct; abdomen de- pressed, fusiform, acute at tip. Length more than one-tweuticth of iin inch. (Say.) This .species is unknown to me, but evidently belongs here. PARAMBSIUS Westwood. Phil. M.ag., I, p. 129 (1832); Forst. Hym. Stml., ii, p. 128 (l^r-^,). Cerapsilon Hal. ( ?) (Typo P. rvfipen Westw.) Head transverse, the occiput rounded, the cheeks b.are; ocelli 3, distinct in a triangle; eyes oval. AntenuiT^ inserted on a frontal prominence, 13-jointed in both sexes, in 9 gradually incras.sated toward tips, clavate, the scape reaching far beyond the ocelli, slenderer toward the base; pedicel stouter and longer than the tirst fimiclar joint, narrowed basally; fir.st funiclar ioint only a little longer than thick, a little shorter than the second; seventh to twelfth wider than long, the thirteenth fusiform or ovate, more than twice as large as the preceding; in 3 longer than the body, filiform, the pedicel and the tirst funiclar joints about equal, the second nearly thrice as long as the first, slightly emarginate at ba.se, the following joints long, cylindrical, four or more times longer than thick. Maxillary palpi 5-joiuted. Mandibles bifid at tips. Thorax oblong-oval, narrowed in front, the prothorax transverse, woolly at the sides; r^tsonotum with 2 distinct furrows; scutellum deeply bifoveated at basf;, tlie foveas often contluent, forming one deep fovea, or separated only rya slight carina; metathorax short, emar- ginated posteriorly, a short conic keel at base, and with the posterior angles subacute. Front wings pubescent, ciliated, the costal cell completely closed; the submarginal vein joins the costa at or a little before the middle of the wing; the marginal vein is about thrice as long as thick, with a stump of a stigmal vein ; basal vein absent or indistinct. 392 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Abdomen pointcd-ovjito, the jietiole rather long, fluted; the seeond segment occupies the greater i)art of its surface, with sulci at base; the apical joint pointed, stylus-like. Legs rather long, pilose, the femora davate, the ])osterior tarsi a little longer than the tibia>, or fully as long, the basal Joint one-third longer than the secon«l. The gen\is is snflRcientlj' «listrnc+ from the other genera with 13- jointed antenuic by the length of the submarginal vein, the absence of a basal nervure, the more pointed abdomen, the seeond segment with sulci at base, and by the antenna! characters of the male. I am not aware that anything has been published respecting the habits of the genus, but if my memory serves me rightly I saw speci- mens of P. rnjipcs Westw. in the IJerlin Museuni,reare. iiov. 5. Length, 1.5"". Volished black, iiupniiotured, with some sparse hairs; .uitemia', oxti'pt the five or six tenniiial. joints, and k'gs, honey- yellow or brownish yellow; mandibles reddish; i)ali)i white. Anten- ua» 1.3-Jointed, about as long as the body; the tlagelluni elavate, twice as long as the scape, the 5 or (» terminal joints bhn-k or blackish, the last joint being very large, fusiform, as long as the three preceding joints anited and nuich stouter; the pedicel is longer and stouter than the lirst flagellar joint, the joints beyond submoniliforra, gradufilly widening toward tips; the penultimate quadrate. Thorax with two furrows; the scutellum foveated at base and grooved at the sides; posterior margin of prothorax at the sides with a row of punctures, otherwise smooth and ])olished; metathorax finely rugose, pubescent, with a prominent acute median carina above. Wings clear, hyaline, fringed, the submarginal vein pale yellow, reaching the costa at half the length of the wing; the marginal vein fuscous or brown, twice as long as thick at tip. Abdomen petiolated, !onic-ovate, longer than the head and thorax united, polished black, the petiole more than twice as long as thick, coarsely tinted, jtubescent beneath, the second segment fully twice as long as the petiole, apex with sparse, long, white hairs. Habitat. — District of Columbia and Arlington, Va. Type in C'oll. Ashmead. . Paramesius terminatus Say. rHlu8 terminatus Say, Leconte Ed. Say, n, p. 778. Faramesiun tirminatiiH Asliiii., C:in. Eiit.. xix, p. 196. Diapria ternntiala Ci. Syn. Hym , p. 251. 9. Length, 2.5""". Tolished black, impunctured, sparsely pubes- cent; antenuje, excei)t toward apex, and legs honey-yellow; petiole ob.scurely rufous. A^itennse 13-jointed, the pedicel longer than the first flagellar joint, funiclar joints 1 to5 subequal, the first about thrice as long as thick at apex, the fifth scarcely twice as long as thick, the joints from here moniliform, the last fusiform, longer than the two pre- ceding joints united. Thorax with 2 furrows; the scutellum trun- cate behind, with a quadrate, crenate fovea at base, the mesopleura below with a few longitudinal striie; metathorax rugulose, pubescent, with a prominent acute carina above. Abdomen conic ovate, highly polished, the tip pointed, piceous, the petiole about twice as long as thick, striated. Habitat. — Bladensburg, Md. Specimens in Coll. Ashmead. il _ ^.^ Paramesius clavipes Asbm. Can. Ent., xx, p. 53. 9. Length, 2""". PoMshed black, impunctured, covered with some long, sparse hairs on the head, thorax, and surrounding the apex of abdomen; the metathorax and petiole beneath rather densely pubes- 304 BULLETIN 4r>, UNITED STATES NATIONAL MUSEUM, <'eiit; aiitoiiiia', ex('('i»t tlio last Joint and the Icjis honey — or rcddisli — yellow. Antenna' 13 jointed, subclavate. the tirst tiaj^t'lhir Joint slij^htly shorter than the i)edicel, the tbllowinjj Joints to the fifth subequal, from thence monilit'onn, loosely Joined, the last Joint iusifoini, more than twice the length of the preceding, fnscons or black. Thorax withont furrows, somewhat tiat, the sides compressed; collar rerhlish laterally; mcsopleura entirely smooth; metapleura rugose, the meso- notal median keel small. Wings hyalin«', pubescent, the venation pale yellow, the marginal nervure short, about twice as long as thick at ai)ex. Legs with the femora strongly clavate, the tarsi very long, the anterior and middle pairs being much longer than their tibia-. Abdo- men pointed or conic-ovate, smooth and polished, the petiole a little longer than thick, strongly fluted, the second segment with two Literal impressions at extreme base. Hauitat.— Ottawa, Canada. Type in Coll. Ashmead. Described from a single specimen received from ]Mr. W. Hague ITar- ringtou. ParamesiuB utahensis, sp. nov. 9 . Length, 2.6" '". Polished black, impunctured, with a sparse cine- reous pubescence. Antenna* two-thirds the length of the body, subcla- vate, black or fuscous, the basal flagellar Joints a little reddish, the pedicel a little thicker but not, or scarcely, longer than tlie first flagel- lar Joint, flagellar joints 6 tt) 10 cpiadrate, the last fusiform, alxmt thrice as long as the penultimate. Thorax with 2 furrows, abbreviated anteriorly, the scutellum truiu-ate behind with a large crenate furrow across the base; mesoi)leura along the nieso])ectus longitudiimlly stri- ate; metapleura ruguh)se. Winj^s hyaline, the marginal nervure brown, only twice as long as the short stigmal. Legs pale brown, the coxte black, the thickened part of the femora piceous, sometimes with the posterior tibite fuscous. Abdomen conic-ovate, polished, black, the petiole twice as long as thick, fluted and i)ubescent beneath. Habitat. — Utah Lake, Utah. Types, two 5 specimens, in Coll. Ashmead. Taken by Mr. E. A. Schwarz, in Utah. Paramesius spinosus, sp. nov. 9 . Length, 3""". Polished black, impunctured, with a sparse cine- reous pile; antenna^, except the 3 terminal Joints, and legs, reddish-yel- low. Antennje 13-Jointed, about as long as the body, subclavate, tvubescent, the scape very long, tirst flagellar joint a little longer than the pedicel, joints 2 to o subequal, the fifth thicker than the preceding joint, the following joints to the last submoniliform, the last fusiform, a little thicker and longer than the two preceding joints together. Thorax with 2 complete furrows, the scutellum truncate at apex with a MONOGRAPH OF THE NORTH AMERICAN PROCYOTRYPID.E. 305 jjrooved line at tlJ\> siiles ami bifoveatcd at base; iin'soph'nra aloiij; the nu'Sopectus nijiose or coarsely paiutat^*; m«'tai)U*ura nifiiilose, pu- bescent, metanotnni with an acute triangular keel just boliiutl the l»ostscutellHin, the posterior anjiles acute. Wings subliyaline, iuibes- cent, the marginal nervnre at least four tin)es as long as thick at tip, the stigmal vein not longer than wide. Alid(»nien long, conically pointeedicel and tirst fiiaiclar Joint both short, the latter a little longer, the folhiwing joints all very long, cylindri<'al, sev- eral times longer than thick, as haig as the scaju', the abdomen pear- sliaped, the ])etiole 3.^ times as long as thick, tinted. Hauit AT. — Washington, 3). C. Types in Coll. Ashmead. Described from two specimens. The species is readily distinguished by the bifoveolated scutellum and the rugoso-puuctate surface of the lower part of the mesopleura. ParamesiuB oregonensis, sp. nov. S . Length, 4""". Polished black, si)arsely ]»ilose, the hairs fuscous. Ilead subglobose, the frontal ridge beiu'ath fovea ted at the middle; clyi)eus se])arated, convex, with a row of punctures at base; mandibles ferruginous, with some golden hairs and several punctures toward base. Antennje 13-Jointed, filiform, longer than the body, black; the pedicel is a little shorter than the tirst funiclar Joint; the second funiclar Joint is the hmgest joint, fully as long as the jiedicel and tirst Joint united, and excised at base, the following Joints all long, cylindrical, very slightly shorter than the second. Collar at sides i)ui>escent, meso- notum with 2 furrows, scutellum with a crenate furrow at base, while the metathorax is rugose pubescent. Wings fuscous, the snbmarginal and marginal nervures black, the stigmal about as long as the marginal. Legsblack,thebaseoftibia* and tarsi, piceous. Abdomen oblong oval, I)olished, black, the petiole 3 times as long as thick, strongly tinted. Habitat. — Portland, Oregon. Type in Coll. Ashmead. Described fiom a single specimen, collected by II. F. Wickham. -^ ^ -, t Paramesius pallidipes, 8i>. nov. (PI. XVI, Fig. 5, 9.) 5. Length, 2.5™™. Polished black, covered with some sparse, long hairs. Antennte 13-jointed, longer than the body, cylindrical, pale fer- ruginous; pedicel and first Hagellar joint of an equal length, not half as long as the second, the joints after the tirst about equal, slightly more than 4 times as long as thick, the second excised at butie. Meso- 396 BULLETIN 15, UNITED STATES NATIONAL MUSEUM. iiotiim with two furrows; scutelluni with u deep fovea across the base, crenulate at bottom; initUlht carina of iiietat hoi ax acutely promi- nent at base. Lejjs pah\ brownish-yellow, \\ inys fusco hyaline, the venation brown, the sti<;ninl ab very little longer than thick, the last fusiform, stouter and a little longer tlian the two preceding Joints united. Habitat. — Carolina and l)istristerior tarsi with the basal, joint almost twice as h)ng as the seeond. Uesetnblesboth PtframeHiuHiind lianalifs; from the former it is distin- guished by the distinct basal nervure, usually a less distiiu-tly pointed abdomen and the structure of the second segment, wiiich overlaps the ai>ex of tlie petiole and is without sulci at base, while the distinct mesonotal furrows, huiger submarginal vein, and the wholly diti'crent anteuuie in the S separate it from the hitter. TAHLK OF SPECIES. StMitelliim with 2 fovp.i' at base. Scaptilii- not separated 2 8capulii> He]>arat, A. Cockerell. Spilomicrus longicornis Pro v. Nat. Can., xii, p. 262; Fiiun. I'.iit. (an., ii, \>. MA. 9 ; ("resN., Syii. Hytn., p. 251. $. — Lonji;. .11 l»«;f. Noir, i»oli, biillant; Ics uiaiHlildilcs, la liase iU-h antennes, le» (riin»', jioli. Itrillaut. Tariere non apparentc. (ProvancLcr.) Hahitat. — Canada. Unknown to me. Judjiinjjf from the description of the venation, the species is a Belytid and. not a Diapriid. Spilomicrus foveatus Prov. Add. et Corr., p. 176; Cress. JSyn. Hyni. N. A., p. 251. 9 . — Long. .115 i)ce. Noir, les pattes et les anteniu^s Jaunes-niiel. La tete en carrf^ avec la face rcntlee juscpTau milieu, formaiit une i)rotuberancc sur laciuelle sont iu- seroes les antcnnes. Antennes de 13 artiides, jauues, les articles terminaux bruns, le premier article fort lonu, les suivauts tres courts, ])oilus, les 4a5 terminaux <^paissis fjraduellement en massiu!. Tiiorax jioli, brillant, beaucoup large en avaut, recussou brillaut avec une petite foveole transverse en avaut. Ailes velues. fringees, sans taches n'ayaut de bieu apparente ■ .^y, -::-.,.- (PI. XVII, Fig. 1, $.) - _-■■.•.- 9 . Length, 2.8""". Polished black, sparsely pilose; antennte, except the 4 terminal joints (or club) which are black, mandibles, palpi, tegulae, and legs, pale brownish yellow. Antenna- 12 jointed, clavate; iiedicel stouter ind a little longer than the first fuuiclar joint; the fuuiclar joints to the club are very gradually shortened, but gradually widened, the 21899— No. m 20 402 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. last two, or the fifth aiul sixth, being wider than hmg, tlie chib joints are slightly pedicellate, transverse, increasing in size, the last very large cone-shaped. Mesonotal furrows deep and broad. Scutellura with a punctate frenum and two broad fovejc at base. Metathorax rugoso- punctate, pubescent. Wings hyaline, i)ubescent, fringed. Abdomen smooth, polished, impunctured, the petiole longitudinally striated. Habitat, — Washington, D. C. Type in Coll. Ashniead. Described from a single specimen, taken by myself along the canal at Georgetown. TROPIDOPSIS Ashiu., gen. nov. (Type T. clavata Ashm.) Head subglobose, the face in the female flat, with delicate side keels; ocelli 3, triangularly arranged; eyes large, rounded. Antennae in 9 12-jointed, terminating in a large, abrupt, 3-jointed club, the funicle slender; in $ 14- jointed, filiform, longer than the body, the flagellar Joints, except the first and last, elliptic-oval, pilose. Mandibles short, bifid. Thorax as in Lo.mtropa, the metathorax emarginated posteriorly, the angles a little prominent, centrally with an acute carina. Front wings pubescent, the submarginal nervure reaching the costa at about the middle, the marginal nervure about twice as long as thick, the stigmal vein not developed, the basal nervure distinct. Abdomen petiolate, oblong-oval, the second segment very long. Legs clavate. Allied to Loxotropa, but readily distinguished by the much longer submarginal nervure, presence of facial keels, and the ditterence in the male autennai. Tropidopsis clavata, sp. nov. (PI. XVII, Fig. 2, $ ; a, «). Mionopria Ilnl., Nat. Hist. Rev., iv, p. 172. (Type M. manlimu Hal.) Head subrotund, the (x-cipnt rounded; ocelli 3, in a triangrle; eyas larjje, rounded or oval. Antenna; in 9 12-jointed, davate, the pedi(;el shorter than the first funiclar joint; club 5-Jointed; in i 13-jointed, filiform, pubescent, the scape reaching beyond the ocelli, cylindric; pedicel small; first flagellar joint as long or slightly longer than the second; second, more or less excised at base; the following joints all cylindrical, equal or snbequal. Thorax ovoid, the protborax distinctly visible from above, transverse, the sides baie; mesonotum wider than long, with two distinct furrows, slightly diverging anteriorly; scutellum subconvex, Avith an impressed line at sides and unifoveated at base; metathorax short, emargiuated posteriorly, a conic prominence at base above, and with the angles acute. Front wings pubescent, the costal cell complete; the submarginal vein reaches the costa at about half its length, terminating in a Antenna' inserted on sv frontal prominence; in 9 12-jointe(l, clavate or strongly incrassated toward tips, the scape reaciliing beyond the ocelli, thickened apically; pedicel rounded: in se; basal joint of ])osterior tarsi three or four times as long as the second; daws small, simide. This genus comes nearest to Laholipn, but is readily distinguished by the maxillary i^alpi and the knobbed stigmal vein. Abbe Provancher described three species under this genus, none of which belong here. AnenrhijnchuH aneuruH Prov. is a $ Platygasterid belonging to the genus laocybns, while A. sjnnosus and A. inerniis Prov. are Belytids. I have rec(ignized three species in our fauna, which may be tabula- ted as follows: FKMAI-KS. Frontal iiclrowuish-yellow; ventral segnieuts finely, si)arsely punctate. A. viiiuiNicus, sp. nov. } : Aneurhyuchus mellipes Ashni. Can. Ent. xx, p. 32. 2 . Length, 2.5""". Polished black, sparsely pubescent. AntennsB 12-jointed, stout, clavate, rufous; the scape is very thick, a little shorter than half the length of the Hagellum; pedicel stouter, but not as long as the first flagellar joint; second flagellar joint shorter than the first; third, shorter than the second; from thence the joints are transverse, increase in size and width, and are well separated. Mesono- tal furrows distinct. Scutellum with two transverse fovete almost MONOGRAPH OF THE NOKTH AMKKICAN PROCTOTRYPHJ.E. 405 iiieetiiij>- at base. Metathoijix closely pniutate, imbeseent, and with some irregular carina'. Legs, incliuliiig the coxa', honey yellow. Ab- domen polished black, the ])etiole rngose with some longitudinal sulci. Wings subhyaline, pubescent; the submarginal vein ends in a callosity and a short stignial vein that also terminates in a knob; from this knob there is a slight trace of a radial vein; the submarginal vein is very pale. Habitat. — Ottawa, Canada. Type in Coll. Ashmead. Described from a single specimen received from Mr. W. Hague Har- rington. AneurhynchiiB floridanns, sp. iiov. (PI. XVII, Fig. 4.9 ; a, ^ antenna.) .sent; antennal club not abrupt, the flagdlum subdavate; auteuuic 14-jointed MykmecoI'Uia Ashm., gen. nov. Males. Antennrc 13-jointed 4 Antennte 14-jointed. Scape not especially developed 3 Scape abnormally developed. Apterous; mesouotum without furrows Platymischus Westw. 2. Face not lengthened ; mandibles not rostriform 3 Face lengthened; mandibles rostriform. Mesouotum with 2 furrows GalEsus Curt. 3. Wings with a basal nervure. p'irst flagellar joint much shorter than the second Ba.salis Westw. First flagellar joint not shorter than the second. Mesouotum without furrows .... Loxotkopa Fiirst. Wings without a basal nervure ; mesouotum without furrows. ScuteUum foveated at base. Tip of 8cut«llum compressed from the sides; the disk or rtpex With a mediatt carina Tropioopkia Ashm., gen. nov. Tip of scutellum not compressed from the sides; rounded or truncate, without a carina. Antenna' nodose-verticillate, the joints pedunculated DIapria Latr. Antenna^ filiform or moniliform, not nodose-verticillnte. Antenna' filiform, the joints from the fourth oval or moniliform, but not thickened toward tips. Second flagellar joint longer and thicker than the first, usually curved or angulate towards one side, the joints beyond rounded, with long bristles Ceratopria .\shm., gen. nov. Second flagellar joint shorter than the first; the first four or five joints twice longer than thick; the joints beyond long-oval or moniliform with short hairs, or joints after the second moniliform, pilose. Tkichopiua Ashm., gen. nov. Scutellum not foveated at base. Second flagellar joint about as long as the first, the joints beyond long- oval or moniliform, hairy Ph.*:nopbia Ashm., gen. nov. 4. Scutellum not foveated at base. Mesouotum without furrows. First flagellar joint not half as long as the second Monelata Forat, 408 BULLETIN 15, UNITED STATES NATIONAL MUSEUM GALESUS Curtis. lirit. Ent., p. 341 (1831), Coptnn Say, Tiost. .lour., i. p. 2S2. Aniitoptt'ra Hi!r.- Scliacf. (T,vp»> G. (DrniitHaVanz.) Headobloiijj or horizontal, with a profound frontal sulcus, the angles of whicli are acute; occiput broad, rcninded; ocelli S. Antennse, in 9 , 12-jointed, clavate-subnioniliforni, the pedicel very small, rounded; the scape short, stout; in S, 14 jointed, filiform; the scape usually angulated a little beyond the middle; the pedicel rounded but larger than th(^ tirst flagellar joint. Maxillary palpi o jointed, iMaiidibles prolonged, rostriform, dentate. Thorax : Prothorax visible from above; mesonotum with two furrows, slightly converging posteriorly; scutellum rather large, somewhat tiat or subconvex, with a grooved line along the sides and bifoveated at base; metathorax emarginated at apex, the lateral angles acute. Frcmt wings folded, often emarginate or with a slit at apex, pubes- cent, the snbmarginal vein not developed or terminating before attaining tl'e costa; the basal cell incomplete; the basal vein obsolete or at least water-lined. Hind wings veinless. Abdomen i)ctiw G. POLlTUS Say. Coxa^ bhick. Aiiteunii' loiijjer tban the body, pireouK; legs piccons G. FLORlDANrs Ashm. Aiitentiii' shorter thun the body; scrape black, the llag^lluiii brown. Flagellar Joints twice tin l<»ng as thick, except the first, which is thrice as long as thick; last two ai>ical abdominal segjuents nigoso-puuctatc. (i. TKXANl :.s, sp. nov. Flagellar joints not longer than thick, except the first, which is «»ne and a half times as long as thick; last two apical abdominal 8e<;uients smooth. G. piLosus, sp. nov. Oalesus quebecensis Prov. Pec. Fann. Can.,ii, p. .559; Ashm. Can. Ent., xix, p. 195; Cress. Syn. Hym.,p. 251. 9 . Lengtb, 3.2'"'". Black, polislied, sliiniiig-; head twice as long as wide, pilose, the cheeks with a tuft of griseous wool; anteriorly pro- foundly sulcate and exhibiting 4 acute teeth; frontal prominence with a large, broad, diamond shaped fovea, its apex not distinctly emargi- nated between the antennfe. Antenn.e 12-jointed, extending to the apex of metathorax, brown; the first flagellar joint thrice as long as thick, the second twice as long as thick; the joints from here gradually incrassated, shorter but broader, submoniliform ; the last very large; cone shaped, as long as the first. Thorax with two deep furrows, the scapula' with a deep sulcus near the tegnla' ; tegulie large, black ; meta- thorax rugose, opaque, pubescent. "Wings subfuscous, hyaline basally, pubescent; folded, but not fissured. Legs, including coxjt?, rufous. Abdomen a little longer than the head and thorax together, polished black; the petiole st^ut, with deep longitudinal sulci, sparsely pilose. S . Length, 4'"'". Black, polished, shining, with the legs red. An- tennse hairy, the joints separated at the sutures; front excavated be- fore for the insertion of the antenna;, with a small point at the middle beneath and another on each side. Thorax elongated, depressed; the metathorax strongly punctured with two carinie united at the base and diverging toward the summit; the mesothorax tuberculous. Tegulaj large, red, black at base. Legs of a beautiful red, the thighs swollen, and more or less black. Abdomen jiedunculate; the petiole grooved above and hairy at the sides, the rest forming a rather short oval; the second segment with small foveje at base. Habitat. — Canada and District of Columbia. Type (J in Coll. Provancher; 9 in Coll. Ashmead. The S of this species is unknown to me, and the above description is taken from Abbe Provancher; the 9 is described from a specimen captured at Washington, D. C, which could only be correlated with this species. Oalesus atricomis, sp. nov. 9 . Length, 2.6""". Black, polished. AntennjB 12-jointed, clavate, black, reaching only to the tegulae ; first flagellar joint only a little more than twice as long as thick, joints beyond to sixth shorter, subequal; 410 BULLETIN 4r., UNITED STATES NATIONAL MUSEUM. from hero to tlie Inst they jue longer, (inadijite, the last liirjje, cone- sliapod. Head oblong, sniootli, anteriorly just above the frontal exca- vation roughene. iiov. 3. Length, .'{.5""". lilack, shining; Hagellnm dark brown; scape and coxa* bla<'k; legs honey-yellow, jiilose; palpi pale; numdibles blackish. Head twice as long as wiilose; the head only a little longer than wide, cornuted anteriorly, the vertex behin«l with a row of close punctures; flagellum T)rown, the Joints, except the first and last, moniliform, not longi'r than wide; scape and coxa* black, the legs dis- tinctly rufous. Collar fluted. Scutellum with 2 large fovea? at base. Metathorax rugose. Wings subhyaline, pubesetiole 1^ times as long as thick, striated, the second segment sulcate at base. Habitat. — Texas. r ; Type in Coll. Ashmead. Described from a single specimen. The difference in the head, an- tennjp, petiole, and the sculpture of the second abdominal segment readily distinguish the species. PLATYMISCHnS Westw. Phil. Mag., I, p. 128. (Type P. dilatatiis Westw.) (PI. XVII, Fig. 7, iihiioniially ciiliii'^cd, dilated, vrith :i dt^ep eiiiurKiiiatioit within; the tliif^clhun sli<;litl,v incrassatiMl toward ii|M*x, the joints after the first nionilitorni; in 9 12 Jointed, chivate, the scape, linear, the pediee! longer than tlui first flajjellar Joint, joints 'J to ."» sul»e(|nal, sul)};iobnlar, tiic followin{j f'ornunjjf tiie cluh. Mandibles bidentate. Tlutrax oblonji-ipiadrat*', the protlnnax not visible from above; njesiMiotJim convex, without furrows; nietathorax very short, not eniarjiinated, the angles not acute, in <^ si>ars«'ly, in 9 densely woolly. Winjis wanting; in both sexes. Abdomen oval, trtmcafe behind, the i)etiole very short, stout, woolly, the sei'ond segment occupying nearly the wlM)]e surface. Legs short, stout, comi)ressed, clavate, the tarsi short. This curious genus, known only in a single species, has not yet been reeogni/ed in Ameriea, the species described as such by Abbe Provan- cher under the nante J'lati/mhschus iorquuius (Add. a la Faune Hym., p. 18li), being a I)iai)riid belonging to the genus TrophUtpria and allied to J>i<(pria conUa Latr. and J>. carindtu Thomson. The genus PUtttfntixrhus was originally characterized from the male; and to the liev. T. A. Marshall we are indebted for perfecting the generic diagnosis by the dis<'overy of the female. Mr. Marshall believes the genus is parasitic on Diptennis hnvte inhabiting low marshes. LOXOTROPA Forster. llyin. Stiul., II, p. 1£2, 1856. (Typo /.. (iculutha First.) Hefid subglobose, often oblong, with a frontal sulcus, the occiput rounded; cheeks woolly; eyes rounded; ocelli 3, minute. Antennse in 9 12-jointed, clavate; the three or four terminal joints most fre- quently abruptly, enormously enlarged; pedicel usually much larger than the first funiclar Joint; in $ 14-Jointed, filiform; scape subcla- vate; pedicel short; first and second funiclar joints lengthened, the first slightly the longer, the second thicker and usually curved, the joints beyond oval or cup shaped, seldom nuich longer than Avide. Mandibles short, bifid. Maxillary palpi, 5-jointed. Thorax ovoid; prothorax slightly visible from above, usually covered with a whitish wool, always present at sides; mesonotum smooth with- out furrows; scutellum subconvex, or flat, smooth, truncate at apex, with distinct grooved lines along the sides, and a fovea at base; meta- thorax short, emarginated. Front wings pubescent, the submarginal vein terminating in a small stigmated marginal vein before attaining half the length of the wing; basal vein always present. MONOGliAPH OF THE NORTH AMKKICAN PROCTOTRYPID.*:. 413 Alxlonioii oblonp oval, in 9 sliowinj; 7 aognu'iits; the petiole short, woolly; tlie seeoiul sej;ineiit occupy illy' nea/ly the whoh' aurface; iu . Scutellum with a single large, smooth fovea at base. Metapleura finely sculptured, rufous toward the hind coxje. Teguhe rufous. AVings hyaline, jmbescent, with moderately short cilia. Legs, including coxie, reddish-yellow. Abdomen oval, polished, the i)etiole hardly twice as long as thick, finely sculptured an, 12-jointed, with an abrupt 3- jointed, black club; pedicel much stouteraud larger than the first funiclar joint; funiclar joints 2 to 5 a little wider than long, the following trans- verse and shorter, Scutellnm with a small rounded fovea at base. Habitat. — .Jacksonville and Fort George Island, Fla. Types in Coll. Ashmead. Lozotropa pezomachoides Ashui. Can. Ent., XX, p. 53. 9 . Length, 1.2""". A small apterous, highly polished, black species, with dark rufous-colored legs and antennae, and covered with long, sparse hairs; the cheeks and collar woolly. The antennae are long, gradually incrassated towards tips, the first flagellar joint a little longer but not quite so thick as the pedicel, the joints 2 to 5 longer than thick; joints 6 to 9 moniliform, the last conic nearly twice as long as the pre- ceding. Thorax narrowed anteriorly, the scutellum with a very small, slightly impressed fovea at base ; the metathorax rugose. The abdomen is ovate, large, fully twice as wide as the thorax, highly polished, with gome sparse, long hairs and a very short petiole. Habitat. — Ottawa, Canada. Types in Coll. Ashmead. Described from four specimens. Quite distinct from the other species of this genus, and probably not a genuine Loxotropa, being more closely allied structurally to the new genus Trichopria. '.,■:: TROPIDOPRIA Ashmead, gen. iiov. (Type Z)ta2>ria contca Fabr.) Head rounded, smooth, the occiput rounded; cheeks woolly ; ocelli 3, small, placed on the anterior part of the head ; eyes round, usually with 3 or 4 bristles. Anteniue inserted on a frontal prominence; in 9 12-jointed, clavate, submoniliform ; scape cylindric, reaching beyond the ocelli; pedicel ov«al, thicker than the first funiclar joint; the first funiclar joint cylin- dric, narrowed basally, at least 4 or 5 times as long as thick, the second, third, and fourth shorter, subequal, all narrowed basally; the joints beyond gradually increase in size and are more or less moniliform, the last the largest, fusiform; in the 6 14-jointed, filiform, simple, or pedicellate-nodose with whorls of hairs. Mandibles short, arcuate, with 2 small teeth at apex. Maxillary palpi 5 jointed. Thorax ovoid, the sides flat; prothorax visible from above, densely woolly; mesonotum smooth, longer than wide, without furrows; scu- tellum convex, comiiressed from the sides, with a delicate median carina MONOGRAPH OP THE NORTH AMERICAN PROCTOTRYPIDiE. 41 7 on the disk and a deep fovea at base ; metaseutellum conically promi- uent; metathorax short, woolly, with subacute angles. Front wings ample, pubescent and fringed; the submarginal vein terminates in a short punctiform marginal vein, at about one-third the length of the wing; otherwise entirely veinless. Abdomen long, conic-ovate, composed of 6 segments, the petiole longer than thick, fluted, pubescent or woolly; the second occupies about half the whole surface; the third and fourth very short; the fifth as long as the third and fourth together; the sixth still longer, pointed and stylus like. Legs long, pilose, especially the tibiae, the femora and tibiae clavate, the tibial spurs well developed, or at least not weak, posterior tarsi shorter than their tibiae, the basal joint scarcely twice as long as the second, claws well developed, falcate. This genus is founded upon Diapria conica Fabr., and is closely allied to Diapria; but the carinated scutellum and the diflerence in the ab- domen readily distinguish it, not only from this genus but from all others in the group. In tlie <;arinated scutellum we see the first ap- proach to the cupuliform scutellum in the group Eucoilime, in the fam- ily Cynipida;, and like that group, the genus is parasitic, so far as we know, on Dipterous larvse. The following table will aid in determining our species: ^ TABLE OF SPECIES. -: ^ FEMALES. Abdomen not prodaced into a long, conical point, although obtnsely pointed ..2 /Abdomen produced into a long conical point, Scutellum w'th a large fovea at base, the bottom usually with 3 or 4 keels. Antennae rufous, the five or six terminal joints black or fuscous ; legs, includ- ing coxsB, rufous T. conica Fabr. 2. Scutellum with but a single keel at the bottom of the fovea, the continuation of the scutellar carina. Autennse, coxte, and middle of femora piceous or blackish. Pedicel longer than the first funiclar joint T. carinata Thorns. Pedicel much shorter than the first funiclar joint T. tokquata Prov. Scutellum with the bottom of the fovea slightly aciculated, but the scutellar carina ceases before reaching it. Antennae, coxje, and middle of femora rufo-piceous. Club 5-jointed, first flagellar joint nearly twice as long as the pedicel. T. 81MULAXS, sp. nov. Antennte, except club, and legs brownish-yellow; club 4-jointed, the first three flagellar joints equal, very little longer than the pedicel, the second and third shorter than first T. tktbaplasta, sp. uov. 218^9— No. 45 27 418 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Tropidopria conica Fabr.. (PI. xviii, Fig. 1, 9.) Cynipa No. 33, GeofFr., Hist, des Ins., ii. Cynipa }>hragmitis Sclirank, En. No. 647; Vill. Ent., iil, p. 76, No. 21 (t). Ichneumon coniciis Fabr., Ent. Sys., ii, 188; Vill. Linn. Ent., iii, 212. Pailus conicus Jnr., Hymn., ]). 319; Spin. Ins. Lig. Fasc, iii, p. 166. Diapria conica Latr., Hist. Nat., xiii, 231; Gen. Crust, et Ins., iv, 37; ? j Nees, Mon., II., 325, s. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^E. 421 Thorax ovoid, the prothorax slightly visible from above, usually woolly; mesonotuin a little longer thau wide, smooth without furrows; the mesopleura smooth, uot impressed; seutellum rather suiall, sub- convex, rounded oft" posteriorly without a medial carina, and uuifoveated at base; metathorax short, woolly, or i)ubescent, with an angulated prominence at base, and more or less acute lateral angles posteriorly. Front wings pubescent, with submarginal vein terminating iu a punctiform umrginal vein at about one-third the length of the wing; otherwise entirely veinless. Abdomen ovate or oval, 7 or 8 segmented ; the petioh* longer than thick, woolly, the second segment occupying most of its surface, the following segments being very short. Legs rather long, pilose; the femora and tibije clavate; the tibial spurs distinct; posterior tarsi at least as long as the tibiae ; the basal joint one-third longer than the second. The student will have no difficulty in recognizing the males in this genus, as here restricted; but with the females it is quite different, many females in the new genera Geratopria, Trichopria, and Phcmopria closely resembling those of Diaprut. Phccnopria can always be dis- tinguished by the absence of a fovea at base of the seutellum; Cerate- pria most frequently has two small fovese at base of the seutellum; the head is usually longer than wide, with a frontal sulcus, and the club of antenujB is generally abrupt; while Trichapria, which is the most closely allied, may be distinguished by the less prominent ridge at base of the metathorax, wiiich is areolated or bifovealated ; the seutellum has one or two shallow fovea? at base, while the abdomen is oblong-oval and less pointed at apex. The following table will aid in determining our species: ., TABLE OF SPECIES. FEMALKS. Club of antennsB 4-jointed 3 Club of antenna} 3-joiiited. Antennae and legs reddish-yellow, or yellow, Bometiraes more or less piceous, the club black 2 AntenniB and legs black. Second funiclar joint two-thirds the length of the first, the following joints to the club cylindrical, at least twice as long as thick. D. CALIFORNICA, sp. nOV. Recond funiclar joint half the lengtli of tlie first and very little longer than thick, the following joints to club short, moniliform. D. UTAHENSIS, sp. nOV. 2. First funiclar joint thrice as long an thick, the following joints at least twice as long as thick. Legs uniformly reddish-yellow D. erythropcs, sp. nov. Legs piceous, the slender parts of femora, tibiae, and the tarsi, honey -yellow. D. AGROMYZ^ Fitch. First funiclar joint only twice as long as thick, the following joints scarcely longer than thick. Legs yellow D. TKx aka, sp. nov. 422 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. 3. Head, thorax, and abdomen black 4 Head and abdomen black, the thorax rufons D. EKYTiiUdTiioitAX AHhui. 4. Club slender, the i)edicel much shorter than the first fiiniclar Joint. Autenme and le;i8 long, yellow, the clnb black ; fnniclar Joints all very long, slender, the first the longest, twice as long as the jicdicel, the others Hubeqnal D. «<)I,i;mbiana, sp. uov. Club incrassated, the pedicel longer than the first uiniclar joint. Anteunie and legs piceous or black, trochanters, base of tibia', and tarsi yellow. Last joint of club much enlarged-, 4 times as large as the ])ennltimate, the first Jointdistinctly largerthan thelastfuniclar joint ...D. aumata Ashm. Last Joint of club not especially rominence above and covered with a fine pubescence. Wings hyaline or very faintly tinged, strongly fringed, the marginal nervure wedge-shaped, rust brown ; there is also a fuscous streak across the wing below the marginal nervure. Abdomen ovate, polished, the last segment produced into a little point, with long sparse hairs; petiole a little longer than thioseed, and tlie basal one club- shaped, and thrice as long, but scarcely thicker, than the following ones. In the f^iuiale they are shorter and troniposed of 12 joints, which are compacted together, the three last enlarged and forming a kind of knob or club, the last joint nearly as long as the two which precede it, its end bluntly rounded." Habitat. — New York and Long Island. Reared by Dr. Fitch from Agromyza tritici. A single $ specimen, doubtfully referred to this species, is in my collection obtained frc a Mr. Martin Linell. It measures 1.5""" long and is sinnlar to D. erythropuH, but dift'ers as follows: Antennae piceous- black; the seventh funiclar joint is only a little longer and stouter than the sixth; the legs are honey-yellow, with the hind coxse black, and the clavate parts of the femora and tibise piceous. Qiapria tezana, s]). iiov. 9 . Length, 1.8"""'. Cl»«ely allied to D. erythropns, but with the legs more decidedly yellow, the funiclar joints very gradually shortening, the joints after the first only a little longer than thick, the seventh shorter than the sixth and very little stouter, the club much larger. The fovea at base of scutellum is more deeply impressed, the metathorax more pubescent, while the petiole is black; otherwise as in D. erythropm. Habitat. — Texas. Type in Coll. Ashmead. Diapria erythrothorax Ashm. Can. Ent., XIX, p. 196. 9. Length, 1.5""". Head and abdomen black, shining; thorax, reddish-yellow ; legs and antennse, honey-yellow. Antennae, 14-jointed, the joints pedicellate-nodose, with whorls of bristles; the second flagel- lar joint the longest, clavate, a little curved, the first, being but two- thirds as long as the second, obconic. The scutellum has a fovea across the base, without distinct lateral impressed lines, the apex slightly ridged or compressed. Collar and petiole, woolly. Wings hyaline, strongly fringed; the nervures pale yellow. Abdomen oval, black, polished, shorter than thorax. Habitat. — Jacksonville, Fla. Type in Coll. Ashmead. Diapria colmnbiana, sp. nov. 9. Length, 2""^. Polished black, impunctured; antennae, except the slender 4-jointed club, and the legs reddish-yellow. Head sub- globose, narrowed behind the eyes. Antennae 12-jointed, long and slender, the first flagellar joint twice as long as the pedicel, slender. mono(;raimi of the nohth amerkan proctotuypii).«. 425 cylindrirsil, Joints 2 toO very {friidiially (lo. noV^. 9. Length, 1.5""". Polished black; antennae, except the 4-jointed club and the legs, reddish yellow ; collar, metapleura and petiole cov- ered with a cinereous wool. Antennae 12-jointed; first funiclar joint shorter than the pedicel; the second almost as long as the first; joints 3 and 4 very little longer than thick; 5 and G rounded; club black, 4- jointed, the first joint not quite as wide, or as long, as the following, rounded behind, cup shaped, the second and third quadrate, the last ovate, one- half longer than the preceding. Scutellum with a shallow, transverse fovea at base; the impressed lateral lines only indicated posteriorly, entirely wanting anteriorly. Wings clear hyaline, strongly fringed, the stigma yellowish. Abdomen ovate, polished black, the petiole short, densely woolly. Habitat. — Arlington, Va. Types in Coll. Ashmead. Described from three specimens. Diapria muscae, sp. nov. 3 9 . Length, 1.6 to 2""". Polished black, witn some sparse long hairs, the cheeks, collar, metapleura, and petiole covered with a dense, woolly pubescence. Head, rounded, when viewed from above, a little MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^.. 427 loiiper than wiile. Eyes rather Hinall, oval, coarsely facetted. Mandi- bles ajul ))iilpi pale l)n>wn. Anteniiie iiisertetl on a frontal prominence; in 9 I'J jointed, pale brown, terminating^ in a black, 4-,iointe(l club; the scape projects far above theo<'elli, above dusky, beneath pale; pedicel stouter and slightly longer than the first funiclar joint; the funiclar joints slender, cylindric, the joints very slightly shortened to club; the club joints large, quadrat ely oval, the last oblong; in tln^ <^ 14-jointed, longer than th«'- body, pale brown, the flagellar joints nodose-pedicellatti .vith whorls of hairs; the pedicel is about half the length of the first flagellar joint, the following to the last shorter, the last i>ointed, fusi- form. Scutelluui with a large rounded fovea at base. Teguhe honey- yellow. Whigs hyaline, with long cilise. Legs, including coxie, reddish- yellow, the tip of the posterior tibije slightly dusky, the coxfi" more or less pubescent, the legs spar ely pilose. Abdomen ovate, scarcely longer than the thorax, subdepressed, the second segment c»ccupying most of its surface, the following segments very short, the third in 9 being longer than the others. Habitat. — Sacramento County, Cal. Types in National Museum. Described from many specimens, reared in September, 1890, by Albert Koebele, from Dipterous puparia found in the ground. A specimen of the pupariuni, sent with the parasite, shows it to be- long to the large family Musddce. Diapria abdominalis Say. -* Pailua abdominalis Say, Lee. Ed. Say's WorkH, ii, p. 729. riatynmchun abdominalis A»]\n\., Cau. Ent., xix, p. 195. Diapria abdomiHalis Cr., Syn.llyin.,j>.2iil. AnteuQiG clavate, as long as tLe body ; black, abdomen whitish. Inhabits Indiana. Body black; antenntu broken at the second joint; first joint one-fourth the whole length, whitish; second joint obconic; terminal joint ovate-fnsifonu, longer than the three preceding joints together; wings very deeply ciliated; abdomen whitish, particularly at base; tarsi white. Length about one-fourth of an inch. (Say.) ., Diapria obtusa Say. PailuH obtuaua Say, Lee. Ed. Say's Works, i, p. .383. Galesita obtuaus Ashm., Can. Ent., xix, p. 19.5. Diapria obtusa Cr., Syn. Hyni., p. 251. Black; feet whitish, thiglis black in the middle. Inhabits Indiana. Body black, polished; .antenn»> fuscous; anterior wings white and very obtuse, finely ciliated ; cilise very short; feet whitish; thighs black, white at base and tip; coxte black. Length nearly one-twentieth of an inch. (Say.) 428 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. ' Diapria ciliata Say. Ptilua eiliatns Say, Lee. Ed. Say's Works, i, p. 333. Gahsu8 tiliatus Aslun., Can. f^iit., xix, p. 195. Diapria ciHaia Cr., Syu. Hym.. p. 251. Black ; feet whitish ; hairs of the wings elongated. Inhahits Indiana. Body hlaek, polished; antenna' with an olilong acute club, at base honey-yellow; petiole of the abdomen and fcot honey-yellow ; winj^s deei)ly ciliated, tlio hairs longer than the transverse diameter of the wings. Length less than one-twentieth of an inch. (Say.) This appears to me to be a Cosmocoma in the family Mymaridce. Diapria apicalis Say. P8ilu8 apicalis Say., Boat. Jour., i, p. 283 ; Lee. Ed. Say's Works, ii, p. 729. Aneurhynchiis apicalis Ashm., Can. P^nt., xix, p. 195. Diapria optca/is Cres., Syn. Hym., p. 251. AntenniB at the tip of the head, which is a little ])rominent. Inhabits Indiana. Body black, polished; antenn.'c as long as the body, fuscous, with subqaadrately nionilifonn joints ; basal joint honey-yellow ; terminal joint not nnich longer than the preceding one ; inserted at the tip of the head ; beneath the antennie is rather a broad prominence ; costal nerviare but little less than half the length of tlie wing, triangular and black at its tip; feet honey-yellow; petiole distinct. Length one-twenty-tifth of an inch. (Say.) CERATOPRIA Ashni., gen. nov. (Type C. loufficepa Ashm.) Head globose or oblong, with a frontal impression, the occiput faintly marghied, the cheeks with a tuft of wool behind; ocelli 3, very small; eyes rounded. Antenna} inserted on a frontal ledge, in 9 12-jointcd, terminating in an abrupt 3-jointed club, the pedicel much longer than the first funiclar joint, the first funiclar joint only a little longer than thick; in ^ 14-jointed, filiform, the pedicel small, rounded, the first funiclar joint shorter than the second, the seconints moniliform, very slightly increasing in size to the club; (dub ^i-Jointed, the first and se»:ond Joints (|uadrate -moniliform, the last oblong, a litth; larger than the 2 preceding joints together. Scutelluin flat, with 2 small fovea; at base. Wings hyaline, fringed, tin; stigma yellowish. Abdomen ovate, blat:k, polished, the iMitiole short, stout, rugose, fully as wide as long. Habitat. — Ottawa, Canada. Type in Coll. Ashmead. A single specimen, received from Mr. W. TTague Ilarrington, differs from the i)receding species in the coh)r of the antenna;, the proportions of the autenual joints and in the shape of the abdomen. Ceratopria blfoveolata, sp. nov, 9. Length, 1""'. Agrees in shape and general appearance with C. megaplmta, bnt with the following differences: The antenna;, excei)t the club and the legs, are reddish yeHow ; the first funiclar joint is a little shorter than the pedicel; the abdomen oblong-oval, obtusely rounded at tip; while the i)etiole is short and so woolly that its sculp- ture can not be made out; otherwise it agrees perfectly with C. mega- plasta. Habitat. — Harpers Ferry, W. Va. Type in ('(dl. Ashmead. A single si)ecimen. Taken by Mr. E. A. Schwarz, June 19, 1891. • i Ceratopria puBillt^, sp. nov. 9. Length, 0.8""". Polished blm-k, impuuctate; antenn.T!, except the club and the legs, honey-yellow. Hejid a little longer than wide. Antenna; 12joint(;d; the club abrupt, 3-Joiuted, black, the first joint not half the length of the second aiid nmch narrower, the last ovate, longer than the pre<;eding Joint; first funiclar joint a little longer than thick, the following to last s(;arcely as hmg as thick, f he last transverse. Scutellum with a curved, slightly impressed line at base. Wings hya- line, pubescent, with ebort cilia. ANomen oblong, black, jwilslied. MONOGRAPH OF THE NOKTH AMKRICAN PUOCfOTRYPIDiE. 431 truncate belli ml, the ])etio1eHiitaIl and tshort, woolly, tlie second negment with li f()venultimate, and as long as the two preceding joints together, the first club joint being smaller than the second; first funiclar joint cylin- drical, about twic(; as long as thick, the following very slightly widened to the club, a little wider than long. Scutellum with a moderately deej) fovea at base. Metathorax and jietiole covereil with a cinereous jMibescence. Wing;, hyaline, strongly fringed, the stigma brown. Ab- domen oblong-oval, black, polished. Habitat. — Jacksonville, Fla. Types in Coll. Ashmead. TRICHOPRIA Ashmead, gen. nov. (Typo T. jxmtnplasta Ashm.) Head subglobose, without a frontal impression, the octiiput rounded, cheeks Avoolly; ocelli 3 small; eyes rounded. Antennae, in 9 12-jointed, the club gradually incrassatcd, not abrupt, 4 or Jointed j in 6 14-joiQted, filiform, covered with short, si>arse hairs; 432 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. the pedicel is small, oblong, or rounded; the second fuuiclar joint shorter than the first, slijjhtly emarginate at base, angulat^d towards one side at tip, the joints beyond the third oval-moniliform, only slightly longer than thick. . Maxillary palpi 5-jointed. . Mandibles short, bifid. Thorax ovoid, the prothorax appearing above as a transverse ridge, the sides always woolly; mesonotum smooth, without furrows; scutel- lum with a single shallow fovea at base, very rarely with two small shallow foveJB, and without lateral impressed lines; metathorax short, bicarinated al>ove, hardly emarginate, the posterior angles not acute or prominent, and always woolly or covered with a dense ai)pressed pu- bescence. Front wings pubescent, ciliated, the submarginal vein terminating in a small, triangular marginal vein before attaining one-third the the length of the wing; no basal, or other nervures. Abdomen oblong-oval, the petiole longer than thick, fiuted', woolly above and beneath ; the second segment oc('Ui)ies most of the remain- ing surface, with a depression or sulcus at base above, the following segments very short. Legs clavate, pilose, the posterior tarsi long, slender, the basal joint about twice as long as the second, claws long, curved. The males in this genus are quite distinct from Diapria in the an- tennal characters, while the females, as before remarked, are quite similar and diflQcult to separate. The anteunje, however, have always a 4- or 5-iointed club; the scutellum has a more shallow fovea, or two small fovete at base, and is without the lateral grooved lines which are always present in Diapria; the metathorax has rarely the acute promi- nent ridge at base; while the abdomen is more truncate at apex and less pointed than in Diapria. These characters, I believe, are constant and justify me in creating a new genus, and, with a litth' study, the student will soqu be able to distinguish them at a glance. As a rule the si>ecies are smaller than in Diapria, and the following table shows that the genus is well rejiresented in North America: ' • TABLE OF SPECIES. " ^ • ■ FEMALKS. 1. Anteiinal club 4-jointed 2 Autenual club 5-joiuted. Anteiiuae not entirely black, the club alone black or faHCous. Scutellum with a single fovea at base. Pedicel 8hort«>r than the first funiclar joint. Legs, reddish-yellow; pedicel twice a« long as thiek T. I'ENTAPI-ASTA, Sp. UOV. Legs yellow, the femora and tibiis fuscous ; pedicel not longer than thick. T. ZlMMEKMA^IMI, sp.uov. MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 433 Scutellum with 2 small foveaB at base: Pedicel about as long as the first fuuiclar joint. Legs rufous T. rxjfipes, sp. nov. AntenuiB entirely black. Pedicel shorter but thicker than the first funiclar joint. Legs pale rufous, base of coxiB and tho thickened portions of the femora and tibiiB more or less piceous T. carolinensis, sp nov. 2, Antenna* not wholly black 3 Anteuuie wholly black. Pedicel thicker and a little longer than the first funiclar joint. Last joint of club large, twice the length of the penultimate, first joint small. Legs black, the trochanters, buMi of tibise and tarsi pale. T. PoPENOEi Ashm. 3. Pedicel longer and thicker than the first funiclar joint. Antennai fuseous or dark brown, ckib slender, the joints a little longer than wide, the 6 funiclar joints slender, cylindric, twice as long as thick. Legs rufous, the coxie, trochanters and knees yellow . . T. Harringtonii Ashm. AutenufB fuscous only towards the tip, rufous basally, the club stout, the joints, except tho first, as broad as long. Legs reddish-yellow, the femora and tibia' tinged with rufous. T. I'ACIFICA, sp. nov. Legs dark rufous; club abrupt, fuscous, four jointed, the joints except the last quadrate T. hirticolijs V.shm. Pedicel stouter but not longer than the first funiclar joi»t. Club black, rest of antennte yellow, the funiclar joints, except the last, which ' is monilifonii, are longer than thick. ■ Legs yellow T. flavipes, sp. nov. Trichopria pentaplasta, sp. nov. 9. Length, l.S""", 5?lack, polished, impunctured ; antennae, except, the club and legs, reddish-yellow. Head rounded. Antennae 12- jointed, long, terminating in a 5-jointed club; first funiclarjoint a little longer than the pedicel; the following joints subequal, about three times as long as thick, thelast, thickened ; club black, the first joint ob- long, the second, third, and fourth quadrate, equal, the last, conic, longer but not thicker than the penultimate. Scutellum with a distinct fovea at base. Metathorax carinated, pubescent. Wings hyaline, strongly fringed ; the stigma yellowish. Abdomen ovate, black, polished, the petiole li times as long as thick, fluted, pubescent, the second seg- ment truncate at base and slightly overlapping the base of the petiole. The $ has li-jointed, filiforni-moniliform antennae, the first flagellar joint twice as long as the pedicel and a little longer than the second; the second stouter, a little curved and dilated into an acute point outwardly at tip; the following joints moniliforra, the last conical, all the joints with stiff bristles. Scutellum with a deep fovea, at base and a slight ridge toward tip; otherwise similar to the $ . Habitat. — Washington, D. C; Arlington, Va.j and Riley County, Kans. Types in Coll. Ashmead. 21899— Ko. 45 2^ 434 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Trichopria Zinunermanni, sp. nov. 9 . Length, about 2'"" . Polished black ; collar, nietapleura, and petiole covered with a dense griseous wool; legs yellowish, the clav.ate parts of femora and tibire and the last tarsal joint fuscous. AutennaB 12-jointed, nearly as Jong as the body, fuscous; flagellum more than thrice the length, of the scape; scape yellowish; pedicel not longer than thick ; funiclar joints cyljndric, about 2J times as long as thick and a little paler than the club; club brown-black, the first joint narrower than the following, a little longer than wide, the three following joints equal, qua. 53. $ . Length, 1'"'". Black, polished, impunctured, with sparse, long hairs; antenna-, dark red or rufo-piceous; legs, in, the first joiut longer than thick and narrower thau the preceding, the second and third, quadrate, the last conic, one-hal' ' irger than the i)re- ceding; first and second' funiclar joints about e(i s 1^ times as long as thick, cylindrical, the following moniliform. Scuiiellum with a single fovea at base; collar, metapleura, and i)etiole woolly. Wings hyaline, strongly fringed, the stigma yellow. Abdomen elliptic-oval, black, polished, the petiole very short. Habitat. — Santa Cruz Mountains, California. * Tyi)e in National Museum. Trichopria hirticollis Asbm. Cephahmomia hirtiiollin Ashni., (!au. Eiit., Xix, p. 195. 9. Length, 1.9 to 2""". Kobust, polished bhick, impunctured; an- tennfe, except club, and the legs dark rufous. Head thick, globose, with some sparse long hairs. Anteniue 12-jointed, endingin a4-jointed fuscous club, the joints, except the last, quadrate-moniliform, the last conic; fanicle slender, cylindrical, the first joint twice as long as thick, a little shorter than the i)edicel, the following joints subequal, the last two joints not longer thau thick. Collar densely woolly at sides. Scutellum with a large fovea at base. Metathorax tri(;arinated, the pleura sparsely pubescent. Wings hyaline, the cilije not especially long, the stigma honey-yellow. Abdomen ovate, black, i>olished, the petiole short, thick, scarcely as long as wide, pubescent. Habitat. — Jacksonville, Fla. Types in Coll. Ashmead. Trichopria flavipes, sp. nov. 9. Length, 1.1"'°'. Slender, polished black, impunctured; antennaei, except club, and legs yellow; collar, metathorax, and petiole woolly. Antennae 12-jointed, long; club 4-jointed, fuscous, the joints, except the last, quadrate-moniliform, the first the smallest, terminal joint ovate. Scutellum with a moderate sized fovea at base. Wings hya- line, fringed, the stigma yellowish. Abdomen ovate, as long as the thorax, polished black, the i>etiole short and densely covered with wool. Habitat. — Arlington, Va. Types in Coll. Ashmead. PHiESNOPRIA Ashmead, gen. nov. (Type /), minutissima Ashm.) Head globose, a little broader than the thorax, the frons not im- pressed; ocelli 3, small; eyes rounded and broadly oval. MONOGRAPH OF THE NORTH AMERICAN PKOCTOTRYPID.E. 437 Autenujb inserted on si slight frontal prominence; in 9 12-jointed, tiie pedicel always much lar}»er and stouter than the first funiclar joint, the first funiclar joint only a little lonj;er than wide, the .'i or 4 term- inal joints enlarjjed, forming a club; in S 14-jointed, filiform-moniliform, finely pubescent, the first and second funiclar joints elongated, about equal or the second very slightly the shorter. Maxillary palpi (?). , Mandibles short, bifid. Thorax ovoid, the prothorax short, woolly; mesonotum smooth, with- out furrows ; scutellum subconvex, rounded behind, without a trace of the lateral impressed lines or a fovea at base ; metathorax short, woolly. Front wings pubescent, strongly ciliated, the submarginal vein terminating in a punctiform marginal vein at about one-third the length of the wing; no other veins; occasionally apterous. Abdomen oval, slightly pointed at tip, the petiole short, woolly, the second segment occui)ying most of the surface, the foHowing segments very short. Legs clavate, pilose or pubescent, the basal joint of iM)sterior tarsi twice as long as the second. This genus is readily distinguished from all other genera in the Diapriina;, except Monelata Forster, by the non-foveated scutellum, and from Monelata, which also has no fovea at the base of the scutellum, by having 12-jointed, not 13-jointed, antennae. The species are all very small, and evidently parasitic on Muscid larva;, P. hwmatobiw, having been reared by Dr. Kiley from the Horn- fly, Hwmatohia serrata. Our species may be distinguished by the aid of the following table : TABLE OF SPECIES. FEMALES. Wingless forms 3 Winged. , Antennae with a 4-jointed club 2 Antennaj with a 3-jointed club, the last joint of which is enlarged, ovate. AntenntB black or brown-black, funiclar joints moniliforni,not longer than thick. Legs rufous, the coxse, femora, and tibite fuscous.. P. minutissima, sji. nov. Legs entirely reddish-yellow P. h^kmatobi.e, sp. nov. AntennjB reddish-yellow, the club black. Legs reddish-yellow P. virginica, sp. nov. 2. Club black or fuscous. Legs yellow or reddish-yellow. All the funiclar joints at least twice as long as thick.. .P. Schwarzii, sp. nov. 3. AntenuiB black or brown-black, gradually incrassated. Legs rufo-piceous, the trochanters, base of tibiae, and tarsi pale. Abdomen long-oval, 2| times as wide as the thorax P. aptera, sp. nov. Antennte reddish-yellow, with a distinct 4-jointed black club. Legs reddish-yellow. Abdomen long-oval, only twice as wide as the thorax P. affinis, sp. nov. 438 lU'LLETIN 45, UNIfED STATES NATIONAL Ml'SEUM. MALES. W'iiijileHH fi>riiiH.4 *. 44.. 2 Winj^ed. L«'jjs ytillow or nMl(lish-y«'llow. ScajM^ yellow ; tla^elliiiii i»al»i browu. Firnt funiclur joint a little nhortcr tlian the 8<-(^oiul, Ich.s thiiu tliritti hh lout* as tliic-k, the second stroujjly cxcistMl at base, tlit* following Jointn long-oval, fully twice au long aH thick, tho la^t conic, more than oue-tbird longer th&n the ]>eniiltiniate P. viroinua, up. uov. 2. LegH riifouH, the femora and tibio) ]>iceon8. Auteniiie honey-yellow. First and second fnniclar joints nearly equal, more than thrice as long as thick, the joints beyond to the last oval-monilitbrni, less than twice as long as thick, the last conical, one-third longer than the penultimate. 1'. I'AKVA, sp. nov. Antennte ]»iceou8-black. First and second funii^lar joints not equal, the second not thrice as long as thick, angulate towards one side, the joints beyond to the last long-oval, fully twice as long as thick P. Montana. Phaenopria minutissima, sp. uov. 5. Length, 0.9""". Polished black, iiiipunctureil ; antenntp piceous, the S(;iipe rufous ; legs rufous, the coxje luul elavate part of femora and tibise piceous; wings hyaline, strongly fring«!d, the stigma piceous; collar at sides, metathorax, and petiole with a tine, cinereous pubes- cence. The antenna} 12-jointed, ending in a 3-jointed club, the last joint oblong, as long as the two i)receding joints united; funicle moniL iform, the first joint a little longer than thick, the following nioniliform, not longer than thick, very slightly increasing in size to the club. Scutellum convex without a trace of a fovea at base. Abdomen ovate, pointed at tip, the petiole very short, not as long as thick. Habitat. — Jacksonville, Fla. Type in Coll. Ashmead. Phaenopria haematobiae, sp. nov. 5 . Length, 0.8""°. Very close to F. minutissima but differs as fol- lows : The cheeks have a tuft of pubescence not present in the former ; antennje a little stouter, the pedicel larger, oblong; mesonotuma little shorter and not so much narrowed anteriorly as in P. minutissima; the petiole a little longer, while the legs are uniformly reddish-yellow. Habitat. — Arlington, Va. ; ; v: Types in National Museum. The species was reared by Dr. Ri ley from the larva of HcematoMa serrata. Phaenopria virginica, sp. nov. (PI. XVIII, Fig. .5, ^ ; o, $ antenna.) 5. Length, 1.1"'". Polished black, impunctured; antennaj, except club, and legs reddish -yellow or yellowish; cheeks behind, collar, and petiole woolly; metathorax pubescent; wings hyaline, fringed, the stigma long, brownish; head thick, globose. . MONOGRAI'H OF THE NORTH AMERICAN PROC'TOTRYPlDiE. 439 The antenna' are 1 -'-jointed, ratlier long, the chih bhick or fnscous, 3 jointed, the hist joint ovate, about one half hniger than the preceding, the tirsta littlesnuiller than the second; lunide cylindrical, nionilifornif tlie first joint two-thirds the length of the scape, the senger than tins first, slightly curved, and dilated towardapex, the foll(>wing elliptic oval, all except the last, about of an equal length, the last conical, much longer than the penultimate. The antenna', legs, and petiole are yellow. Habitat. — l)istri., with which it was confused in my collection. It is, however, readily sepa- rated from that species by the entire absence of a fovea at base of scu- telluui and the slight ditierence in the shape of the anteniue. Phaenopria affinis, Hp. uov. . 9. Length, 1.2""". Apterous; polishe. 54. $ . Length, l.l"". Differs from tht; species just described in being slightly larger, Mith the antenuie dark rufous, the club black, the legs yellow or reddish -yellow; while the collar, metapleura, and petiole are black and densely woolly. Habitat. — Ottawa, Canada. Type in Coll. Ashmead. The species was described from a specimen received from Mr. W. Hague Harrington. BASALTS Westwood. Phil. Mag., 1833, p. 343. (Type />'. fiimipennis w'estw.) Head subglobose, the occiput margined, the clypeus entirely sepa- rated, the cheeks woolly; ocelli 3, close together in a triangle; eyes rounded. Antennae inserted on a frontal prominence, in 9 13-jointed, either moniliform, clavate or gradually incrassated toward tips, the scape very long, reaching far beyond the ocelli; in S 14-jointed, filiform, the pedicel usually smaller than the first flagellar joint, the first flagel- lar joint not more than half the length of the second, the second the longest joint and always excised outwardly at base and dilated at apex, the following joints, except the last, always shorter than the second. Maxillary palpi short, 5-jointed, the third ami fourth joints small, equal, the last elongate, pilose. Mandibles bifid at tips. Thorax ovoid, the collar woolly at sides; mesonotum without fur- rows (except sometimes indications of them posteriorly in the 9 ), but prominently elevated in the middle anteriorly; scutellum with a pro- found fovea at base or with 2 confluent fovea' ; metathorax emarginated, with acute angles and a prominent acute median ridge above. Wings in S large, broiid, pubescent; the submarginal vein attains the costa at about one-third the length of the wing or a little beyond; the costal cell closed ; marginal vein short, triangular, usually with a MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 443 stump of a stigmal vein that lias a short backward directed branch; 9 apterus. Abdomen pointed, ovate, distinctly petiolated, the second segment very large, with 2 sulci at base. Legs clavate, pilose, the basal joint of posterior tarsi about one-third the length of the second. Westwood characterized the genus from the male sex alone, and the ditference noticed in the antenuje sufficiently distinguishes it fiom all other genera with non grooved mesonotum and 14-jointed anteunte. Thomson characterized the genus as having 12-jointed antenna?, in 9 , but he confused Zoxo ^ro/>a Fiirster with Bamlys, and all his females are now relegated to that genus. The genus is undoubtedly closely allied to Loxotropa and the females are probably always apterous. What I take to be the female of Baaalys has 13-jointed antenna? and agrees in all essential characters with the male. Whether I am right or wrong is, however, questionable, and can only be definitely settled when specimens in both sexes have been reared, or the sexes are cap- tured in coitu. "^ The species in our fauna known to me may be distinguished by the aid of the following table : TABLE OF SPECIES. Females 2 Males. Scatellum with an oblong forea across the base. AutenuiB and legs rufous ; wings fuscous. First flagellar joint oblong-oval, less than half the length of tli second, the seconil very stout, a little narrowed and curved towards the base, the following joints shorter, fully thrice as long as thick, the last acuminate, 1^ times as long as the penultimate. H. FusciPEXNis, sp. nov. Scape, pedicel, and femora piceous, rest of antenn* and legs pale rufous, or brownish-yellow. First flagellar joint longer than thick, about lialf the length of second, the second stouter towards apex, narrowed and curved towards base, the following joints shorter, not more than 2^ times as bmg as thick, the la.st much longer than the penultimate B. riciPKS, sp. nov. Scape polished black, pedicel and flagellum brown. First flagellar joint oblong-oval, less than half the length of the second, which is dilated outwardly at apex, the following joints equal, 2| times as long as thick B. utahexsis, sp. nov. 2. Winged; antenna? and legs brownish-yellow, the fonner gradually incrassated and dnsky towards tips ; pointed tip of abdomen rufous. B. anams, sp. nov Winged ; antennte and legs piceous, the former very short, filiform ; bases of tibise honey-yellow B. brk vicORNi.s, sp. nov\ Apterons; legs and funi<'lehoney-yellow; scape and club brown-black, the latter abrupt, 4-jointed B. californica, sp. uov» 444 BUIXETIN 45, UNITED STATES NATIONAL MUSEUM. Basalya fuscipennis, sp. nov. • S. I'<>ngth, 2.7""". Polished black, impunctured ; cheeks behind and collar with a dense cinereous pubescence ; antennae, legs, and petiole brownish-yellow ; wings fuscous. The antennae are very long, 14-jointed, tapering toward tips; pedicel rounded, first flagellar joint about twice as long as the pedi(^el, or less than half the length of the second flagellar joint, the latter the longest joint except the last, very stout and a little curved, the following joints to the last shorter, cylindrical, all about of an equal length, fully thrice as long as thick, the last joint longer than the j^enultimate. Thorax without furrows, but convexly swollen medially anteriorly, the scutellum with a transverse fovea at base, the sides straight, the postscutellum tricarinated, while the nietathorax has the angles lobed and a prominent, blunt, median carina. Wings fuscous, pubescent; the subraarginal uervure reaches the costa a little beyond one-third the length of the wing ; the marginal vein triangular, piceous, with a cloud below its tip. Abdomen oval, black, shining; the petiole brownish-yellow, only a little longer than thick, fluted, and covered with a fine grisecms pubescence. Habitat.— Washington, I). C. Type in Coll. Ash mead. Described from a single specimen taken by Mr. E. A. Schwarz. Basalys picipes, 8p. nov. $ . Length, 2"'"". Polished black, impunctured; scape, pedicel, and legs piceous ; flagellam brownish or fuscous ; base of tibije, trochanters, and tarsi paler or brownish-yellow; wings subfuscous. The antennae are 14-iointed, longer ihan the body, the first flagellar joint about half as long as the second, tlie second the longest and stoutest joint except the last, thicker toward apex than at base, a little curved, the follow- ing joints not more than two and one-half times as long as thick, cylin- drical, the last joint about twice as long as the penultimate, Imt slen- derer. Metathorax covered with a rather dense cinereous pubescence, rugulose. Abdomen entirely black, the joetiole fluted, i)ube8cent. Habitat. — Washington, D. C. Tyi)e in Coll. Ashmead. Described from a sjiecimen given me by Mr. O. Heidemann. This species differs from B.fiiscipennix, in its much smaller size, color of au- tenna' and legs, the shorter flagellar joints, more pubescent metatho- rax, and its wholly blaek abdomen. ■ ■,. . _ Basalys utahensis, np. nov. S. Length, 2""". Polished black, impunctured; scape black, shin- ing; pedicel and flagellnm brown-black; legs piceous, the trochanters, knees, base and tips of tibije and tarsi, rufous. The antennie are 14- jointed, stouter than in the preceding species, the first flagellar joint less than half as long as the second^ the latter one-third longer than MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 445 the third, autl a little dilated toward tip, joints 3 to 5 about twice as long as thick, the joints beyond to the last about two and one- half times as long as thick, the last one-half longer than the penultimate. The scutellum has a large, deep quadrate fovea at base, the sides parallel, keeled; the metathorax rugose, with the usual central carina above, prominent posterior angles and almost devoid of pubescence. Wings subhyaline, jmbescent, the venation pale, the stigma brown, with a slight cloud beneath the tip. Abdomen oblong-oval, black, shining, the petiole very stout, not longer than thick, rugose, pubes- cent above and beneith. Habitat. — City Canyon, Utah. T>i>e in Coll. Ashmead. A single specimen given me by Mr. Schwarz. Resembles B. picipes, but the antennjc are shorter and stouter, wings paler, while the abdo- men is difterently shaped. Basalys aiialis, sp. nov. 2 . Ticngth, 2.5""". Polished black; antennae and legs brownish- yellow, the former dusky toward the tips; collar, metathorax and petiole covered with a white woolly ]mbescence; scutellum bifoveated at base; metathorax with a ijyramidal prominence at base. Antennae 13-jointed, very long, the scape unusually long, more than half the length of the flagelluni. the flagellum gradually iucrassated towards the tip; pedicel stouter but not longer than the first flagellar joint; the flagellar joints to fifth giadually shortening, but widening, the following to the last, submoniliform, the last, enlarged, ovate, about thrice as large as the penultimate. Wings subhyaline, pubescent, the marginal vein thickened and truncate at apex. Abdomen conic-ovate, one and a half times as long as the heatl and thorax together, polished black, the pointed tip reddish. Habitat. — Carolina and Texas. Types in Berlin Museum and Coll. Ashmeam two specimens. The specimen in the Berlin Museum is labeled "Carolina, Zimmermann." Basalys ruficomis Prov. Nat. Can., xii, p. 261; Faun. Ent. Can,, ii, p. 560. S . Length, 0.15 inch. Black, polished, shining; the mandibles, with the legs, rust red; the palpi pale yellow. Antennic ferruginous, in- serted on a i)rominence of the face. Metathorax rugose, short, with two diverging keels. Wings subhyaline, the 2 subcostal nervures, with the stigma, black. Coxje black at the base. Abdomen with a grooved petiole, margined at the sides, the rest polished, shining, the extremity punctured. Habitat. — Canada. Unknown to me. 446 BULLETIN 45, UNITED STATES NATIONAL MUSEUM. Basalys brevicornis, sp. nov. 9. Lenj?th, 3""". Black, polished; antennae and legs piceons; the scape beneath, the pedicel and three basal joints of the funicle show- ing more or less yellow; teguliB, anterior femora beneath, the slender portion of all the tibia? and the tarsi, honey-yellow. Mesouotum with two very short grooved lines posteriorly. Scutellum with two oblicjue fovejB at base; while the metanotum is rugose with a distinct median carina. Abdomen oblong-oval, highly polished, and at base overlapping the short, thick, fluted petiole. Antennai very short, 13-jointed, sub- flliform, extending scarisely to the tegula? ; the flagellar joints after the first wider than long, the terminal joint oblong. Wings subhyaline, a distinct costal cell, a basal cell, and rather large, triangular stigma, the latter with a distinct backward directed vein. Habitat. — Colorado. Type in Coll. Ashmead. Eemarkable for the brevity and shape of the autennie. Basalys califomica, sp. uov. (PI. XVIII, Fig. 7, ecies and before I had drawn up my description, I kno(*keliHli>iii patiiciilnta. Syiiopeas antennaria! Ashin Cciidomiiia antcnufniir, Whli . Anopedias error Fiteli D'lphtsis tiiliri (ni wheat. Triehacis rubieola Ashin Ceeidoniyiid stein-gall on Ulackberry; ditto on I'cnioiiia vorchoruceiiiii'i. i'latyg;ister llerrickii Pack (eridowiiia dexiniclor iiux. earya< Aslim ('eeidoinyiid gull on Tliekory. rolygiiotns alnieo^a Ashm Ceeidoniyiid gall tVoni llower bud of alder. pinieola Ashm Cfridomtiiapim-hiojtisO. S. on riniis inojtu. atriplicis Ashm Ceeidomyiid gall on Afriplex <i sp. californicus Ashm ..,,,,. C^scidomyiid gall on lUicvharis pihilaria, 21899— No. 45 29 i^^ 450 DLLLKTIN I"., UNITED STATES NATIONAL MUSEUM. II. Mii'TKKA — Coiitiinicd. I'nranittn. Hoxlx. PoI.v{;iiiitiis astniiolii Asbiii Cecidoiii.N iiil j;i»ll on iistcr. iisviiaptii- Asbiii Ce. on ('hfito)iiis Aslmi Cei'idoaiyiid jj;all on UtinUtvut or .Irleiiti- xitl K)l. salicicola Asliin ( 't'cid<»niy iid null >'noj)ria ba-niatobia- Asbm Hinnatohld srrnitu. Diapria atrromyzii' Fitcb Atjromyzn (imvrUaun Sav. III. — I.KriDol'TKK.X. I'erisenins )>rolongatns I'rov Crambus cdHfiiiiosellnx. (ioniozns Hnbliiinlii How I'latyiiota rostra iik ;ind I'lataceticus ijlon ri'i. cellaris .*>ay Geonietrid larva on wbciat Htiildde. l'ov('(da( MS Asbm Tineid larva in dry f'nugus. I.ygociTns (i-dentatus Asiim Sarroihi qm rairiiiiuiKi (.'). Tolenonins iebtbyur.-e Asbm Eggs h'hihiiurn iiiclima. grapta- llow Eg!;s CniplK iiili rriKjtdioiiis. Eggs (irapld prot/ni'. Eggs I'anexaa aiiiiopa. V,gferi. ,s|>iiiisomatis Asbm Kg<^s SpiloKoina rinjinica. ar/ani.i' IJiley V.g'^t^ .Ircaiixi (h-iimi. bi'liotliidis Asbm 'Etx^ia Jldiothix arniigcni. lavrrna' A.sbm Eggs /,f(r(c»(rt 7(u'(/e»V'7?(«. Kilcy i How Eggs - Ipiituni rh/loii. (•Hsiocampa- Eiley Eggs diniocnmpa americami. bifidns b'iley Egg.s Hiiphaiitrhi tejrtor. KiM'bcb'i Asbm Eggsnnknown.Li'pidtipterononSolidago. go.ssyjdicol.i Asbm Eggs oCa Lcpidojderon on rotloii. geometra- Asbm Eggs unknown. (ie«>metrid on wildeherry. ealifbrnicns Asbm Eggs (hgi/hi s]». tilihingis Asbm . . , Eggs -Sphinx varoliita. MONOGUAl'U OF THE NOKTII AMKKICAN riiOCTOTUYIUD.E. 4;jl IV. C'OI.KOI'TKKA. ParanHi-a. lloatx. Ajx^nesia coronata Ashin CatogviiiiH vk/iik niulcr bark of ( en in, (V'ltbulonoiiiia hyaliniixMiiiis Aslini Hiiinithcnvmiis cniditim in tig twi^s. Aiiiixas ('hittou(l»'iiii Aohin rroiii ("m ftmipvH liviiij^ in fuuy;n8. Atelcopterim tursalib Asbm ^^ilvamm »iirinami»iiin in raiHins anil in 8tore<'« ohsdletuH .Say SI>:iidol(i 8tric» Ashm From acorns infested with Balaninuts IHIHiCHH (.'). V. (JUTHDl'TKK.X. Ciiens (ecanthi Riley Eggs ilhii-i iiiaiiniuu\ (K. Inlijuiiiiiii. Baryeonns o'canthi Ifiley Fggs ilhun iiirciix. Scelio ovivora Hiley Eggs Jh inttira cavoHiin. t-alopteni Kiley Eggs Calopteniis atlantin. Lnggeri Kiley Eggs Calopfeinis sp. Mucroteleia tloriihina Ashm Eggs Orchtlimum «/»»/'. anasa^ Ashm Eggs .1 mim IriHlis. - Amitiis alenrodinis Hahl Ihiirodcx occrh and J. vitri VI 1. NKlKoriKKA. Teleuomns chrysopa' .\shm Eggs ( 'krunopa sp. VHI. AUAA. Acoloides saitidis How Eggs Suitix pithx. Eggs rhtjdippiix niorsiluiix. Emertonii How Eggs of an unknown spidt^r. Aeolus Z.'tbriskiei Ashm Eggs of an nnknown spider. ]3uei4s amei:ica,uus Huw .,,,.,,,.,,.,, Eggs of wu Epeirid. LlTEllATlJllH AND AIUIUKVIATIONS. A. Ann. Soo. Ent. Tr. — Annales jri(|n« e Land. Fla. Ayf-rs (H.). — Memoirs of the Boston Society of N.itinii! Histo -y, vol. in, 1884, No. 8, lioston, Mass. R. Balf., Conij). Embry. — Balfour (E. M.). Comparative Embryolojjy. London, 1880. Berl. ent Zeit. — Berliner entomolot^isehe Zeitschrift, Berlin, 1857 et nt-qq. Boll.— Boheman (C. H.). .SV Serials. Bouehe, Naturj;. — Bouch^ (I*. F.). Naturpen. B»Tliu, 1834. Bost. .lonrn. N. H. — Boston .Journal of Natural History, vol. i [183(>] et afqq. Brulle, Hym. — Brune(A.). Histoire Naturelle des Inseetes, par M. le Comte Amed6e Lt4)t'lletiei de Saint-Farijeau. Hyni<'Mioi>teres, ])ar M. Auj?. lirullt-. 4 vola. Paris, 1«37-'M). <". Can. Ent. — Canadian Entomolo<^ist, 24 vol:;.. London, Ontario, Canada. .; ' Cameron. — Cameron (P.). Cre.ss.. Syn. Hym. — Cresson (E. T.). Synojisis of the Fanulies and (ienera of the Hymenoptera of Ameriea, North of Mtixico, together with a catalogue of the descrihed species, and Itihliograjthy. American Entomological Society, Philadelphia, 1887. Comp.-renil. — Comptes-rendns de I'Acadomie des sciences a I'lnstitut de France, Paris, 1835 et xiqq. Curt., Brit. Ent.— Ctirtis (.L). British Entomology, l(j v voIh.. ISK) <7 nm/)/. I'tiltliHiuiil \>y Itionklvti Kiitoinii- logicul Soriet.s . Kilt. News. — EutomolD^ic-il Ni-wh, -^-tf. K«. Kuc. Motb. -KiMycloiM'die M('-tho<1i<|ii>>. 10 vols. Paris, 17S{)-lX2."i, Knt. Ma;;. — Tbo Kutoniobtgical Ma^aziin-. ."> vols. London, ls;i3-';W. Kutoni. — N«'\viiiaii's Kntoniolugist, London. IH4(V-'l2 and \>0'A, li Hcqq. v. Fab.,Ent. Sys. — Fabriciu8(J. C). Kntonndo^ica SysttMiiatica. 1 vols. (Joitenhayen, 17!t2-'!U. Sni.idt'tu.-nt, 179S. Fab., I'iez. — Fabriciiis (,].('.). Systi-nia Piezaturiiin. BriiiiHwick, IStM. Fab., Sys. Knt. — Fabririns (.I.e.). Systcnia Kntoniolo^ica. Flenslmr^ and Lii|i/i^, 177.-.. Ftirst., Heitr. — Foralor (.\.). Heitiiijjt- /iir Monograph ie der I'teroiiialinrn. Aix-la- Cbapell.-, 1K41. Ftirst., Hyiii. Stu''. — Forster (A.). Hyraonopterolo^is( bo Stiidi«n. Heft ii. (Jbal- cidia" Mild I'rortotriipii. Aix-la-(Jliapelb% lHr>(>. Fitrst., Kl. Monoy;. — Kb-ine .Mono;;ra)diie, 187s. (i. Cianiii, I't'luT 9. Gard. Ciiron. — (Jardeuers' C'broniele, l^oinbm, 1841 it sii/ii. Geer, M<^iii. — Geer (C. de). Mt-iiioires ](onr servir a I'llistoire lU-s Inseetes. 7 vols. Stoekbohn, 17."')2-'78. Germ., Fn. Ins. Kiir. — (ierniar (E. F.). Fauna Iiisectoriini Eiiropa-. Heft i and ii, by A. Abreiis. Contiiiiied l»y E. F. (Jeniiar. J4 )>ts. Halle, 1812-'48. H. Haid,, Hericlite. — Hericlite iiber d, Mittbeiliin^en v. I'roniideu d. Naturw isseiiHcb,, beransge^oben v. W. HaiAeiiger. 7 vols. Vienna, 1847-'r>l. Hal., Hyiii. Hrit. — Haliday (A. >L). Hyiiieuo|itera Hritanni<:a. Oxyiira. FaBcien- lus I, London, 1839. See Serials. How., Send. Hut. — Howard (L.O.) in Seudder's Ibittertlies of tbe Eastern United States and Canada. Caiubriilge, Mass., 1889. Hub., Ins. Aft". Orange.— Hubbard (H.G.). Insects Afterting tbe Orange. Reporton tbe insects aileeting tbe eiiltiire of tbe orange and otber plants of tbe Citrus family, witb practical suggestions for tbeir control or extermination, made under «lirection of tbe Knt^imologist. Washington, D. C, Government Printing Office, 18K-.. I.' '^" " '^"'■' -^ '■■■-■ ■ Ins. Life.— Insect Life. etc. Kdited by C. V. Riley .ind L. O. Howard. Vol. i. 1888 et aeqq. WaHliiiigton, I >.('., (Joveriinient Printing Otliee. MTKKATrWK AND Ar.HRKVT\TIO\S. 4*).^) .1. Jonr. Ai-iwl. Nut. 8r .\.»»iii:il Srimn*-?* of I'liilu- (It-lphiii, \ 111. 1. I IM7J it nniil»ti. (Jcnevii an;;iiH l(.viiii-iii)](t)'r(>riiiii Kiiropic, iHCi". L. F^iiiiii. Sy8t. — Nfoiirt tie r.aiiiiirrk (.). M. I'. A. . Articlfs in Ciivifr's Ki-jiiio A'limal. i;<02-'."'). Latr.. Prt'c. — Latreillp (P. A.K Pr«'<-is dcs Caractrres fjom-riqiifs des Inst'ctfs. Urive, 17iH}. Linn. Ent.— Linna-a Kntomolofiica. lii vols. Mt-rlin and Lt-ipsic, 184t>-'6(J. Liun., Fn. 8uec. — Liune (f. von). Fauna Siiecica. Ed. ii. Stockliolui, 17»)1. Linn.. Sys. Nat. — Linin' (('. von ). Systt-uia Natnin'. Eil. Xir. Stookhohu. 17ri«i-'(W. Loud. Ma;j. — Loudon's Magazine of .Natural History. i> vols. Ijondou, IxJlt-'Sti. .M. Marsh.— Marshall (T. A.). In serials. Marsli.. Cat. Hrit. ()\y.— Marshall (T. A.). A CatalojjMe of the Kritish Hynieuo])- teraOxynra. Loud(»n, IXl'^. Mem. .Viad. .St.-Peterslxmr:;. — M<''uioires ile rAeadeniiede St.-Petershonrg. lH( the Mauehester Literary and » liilosojiliical Society, 4th scries. Mik.— Mik (.1.). In serials. Moes., Magyar Fn. — Mocsary (A.). Mag.var Fauna uutsnejii darasai (Heterogyniihe Fauna' Hungarii-a-). Term. Kozleui, wii. ]»p. l-iW, pis. ii. Miill.. Fn. Fridr. — Miiller (<>. F.). Fauu.i luseclorum Fridriehsdalina. Copenha- gen anil Leipsie, 17UI. Miill., Natiirs. Lmn. — Miiller. (P. L. S. ). Vollstiindiges Xatnrsystj'm des C. v. l.innd, niit einer Erkl.-iruny;. (i m>1s. and su)>)(lcnient. Nureniherg. 177S-'7<>. - . ,. \. Nat. His. Rev. — The Natural History Review ; a quarterly journal of science, ion- ducted hy Haliday and others. ."> vols. Dulilin, 1854-'5S. Nees. Monog. — Xecs von Esenheck (C. (i.i. Hymeuopterorum lehueumonihus af- liuium Monograi)hia'. Cenera Euvo))ica et Sjtecies illnstrantes. 2 vols. Stuttgardt and Tiihingen, 18:il. Nouv. Diet. — Nouveau Dietionnaire vols. Paris, IHlfi. n. Ofv. — < tfvcrsigt af Kougliga Nvenska \'ctenskaps-.\kndcniicns Filrhandliugar, .Stockholm, ISI."* tt scqu. 45n LITKRATFRR AND AnRRKVIATIONft. P. Pack., (Jnide. — I'iukiird (A. S. ). Uiiit" Iiiscits, ;im<1 :i treatise on those injurious au«l beiielicial to croiys, lor the use of coHej^es, farni-sehools, and af^ricultnralists, liy A. S. Packard, jr.. ^^. ]>. Seventh edition. Now ^'orlv, 18S0. Pan/., ]'n. (ierni. — l':in/er ((i. W. F. ). I'aiina' Insectornni (iernianica' initia. \v'J ids. NnrendnMg, ITHl'-llSK). I'an/... Krit. lievis. — Panzer ((i. .\\ . 1'.). Kiitisthe Jie\ ision deail)eitt ft neqq. I'roc. Knt. iSoc. Wash. — Proeeediujjs (d' tlie Eiitom(do^ical Society of Washine L6on). Petite Fanne F.ntoniolojjiciue du Canada, etc. \'ol. ii. llynnMioidcres. (^>uebee, 1S83. Prov., Add. Faun. Hym. — Additions et corrections an xolniru; ii ilc la Fanne lOnto- nndojjiqne . R. Ratz., Ichn. d. Forst. — li'atzebnrj; (,I. 1'. (,'.). Die Iclmenmoncn der I'or.stinsecten in forstlicher nnd eutoniolo.uis<'her iieziehnni;'. ;> vols. Hei'lin, 1844-'r>2. Say, L< . 1-d. — Say ( T.). ('onii)]ele \\ i itin^is of Thomas Say on the EntonKdofjy of North Ann-rica. Edited by .John L. Lecoute, iL 1>. 2 vols New York, 18r>9. Se. Mass.. \XX\\. Sjiin.. Jus. Lig. — S)iinola (Maripiis M.>. Insectornni Lifjnriie sj-.ecics nova- ant rariores. 2 vols, (ienoa, IHOti-'S. Stefano, Nat. Sic. — Stetano. II Natnralista Siciliaiio: (iiornale dellc Scicnze Natu- rali. Kajjnsa. Palermo. Step., 111. Brit. Eut. — Stephens (.LF.). Illnsirations of P.ritish Enti-.nology. 11 veiitsch- land, Piensscn nnd Pusen den (iilti.rjjtlanzen sehiidlichen wirbelloseu Thiere. Leipsic, IStiit. Trans, l-^nt. Soe. Lond. — 'flie Transactions of the KntomtdoKical Society of London. 1834 tl xeqq. Trans. Linn. Soe. — The Transactions ol' the IJnna'an So<'iety of L(nidon, 1701 '• stem of Nature; translated from timelin, Fi.brieiiiH, «'te., Animal Kinjjdom, V( i. ii and iii. London, ]8(»«; LITKK'ATURK AND ABHREVIATIONii. 457 V Vcili. I'r. lilicinl. — V'crli;iiinussi.syri» (jfaudif. — W.Hcatl: c, vertex; o, ocelli; <»<■. occiput ; //. jicna, or cheek; ./', face; c, eye; <7, < lyixMis; a, aiiteiina; «c. scape; ^, pedicel; //, liagc'' im; mr/>, maxillary palpi; /6^>, labial palpi; hi, mandihles. T, Tlioiux : ^»/, pro- thorax; c, collar; jiii. ]>roi)otiiin ; p. propleiiron ; pxtni, i)roKternum; sji, spirai-les; m.s, nie.-4oscutum; pf. jtarapsidal furrows: ;), jiarapsides, orscaj)- ulie; X, iiiesoscutelluui i»r scutellum; iir, axilla; nips, iiiesopostscutellum; /(/. tctjula, or wiu<>- scale; )Hy>, iiiesoplcurou; (««//«, iiiesosteruuiii ; rp, v\n- sternuiu; mlt. inetatborax; inn, nietaiiotuni; sp. spiracles; mtp, metaph'u- roii; i7(H. insertiouof hiuil wiufjs. A, .Ibdiniini : 1 2. 3. 4, 5, 6, 7, and S. tlorsal sejjiiients or tergites, iiumlx r 1 usually desii^uated as the i)i'tiole; 2, :>. 4,;"). and H nrites, or ventral sc<;nients; tor «/*, slieaths conjoined, forniin, marginal or radial; 0, first discoidal; 7. second discoidal; H, third . H'nid irinfi of JSvljiUi: sc, costal and subcostal united at base; m, median iicr\ure; .v/, stigma with hooks; /i, basal nervure; c/*/. cubital, ''ells: 1, • costal cell (open); 2, basal; 3, anal. ti. (h'ipositd)' of l'rovtotriii>es I'unduiiis Say : shs. sheaths conjoined, very long and curved at tip; tha, terebra, or ovi]iositor proi>er: /»/». basal plates; spc, 8i>icuia'; spl, basal lol)es of spicuhe. 7. (triposUor of Epjirh ijrandis {ejlmial rirw) : shs, slieaths; fha, lerelira, or ovipositor pro]ier, with the two s]iicula' {xpc). 8. The so mi (niternul vieir) : shs, slieatlis or tiilie; tha, ovipo8it.«»r ]»roper; spc, spicnla', base and ajiex ; hp, basal plates. „ 9. Cross serlion of some : A. a section from near the base; 1$, from near the tip l(t. Male ffeniliiliii of Epyria caihoiioriiis : A, viewed from above; ji, i)enai sheath, strongly exserted ; o. i>ritice of penis; ki, upper sheath or jdate; Is, lower shoatli. IJ, viewed fro, u beneath: us, u|>i»er sheath; ?.■<, lower siieath ; p, penis; />c, penal / I'mrtoiryixx 1(1 mini i(.s (nide riiLMil;i' ; h, rc- rurvcd liases c)t" spiculu' ; Jf', iiiiis<-ii1:m' an*;iil:it«Ml lol»c or catcli; <»■, iiiciii- braiiousplatcM. I'l.ATK II. Fi(i. 1. Piiatocera aha Klug ^. '2. I'rixtocera atra Klujj 9 . 8. laohrachium miirmecophilinn Axliiii. 9 • t. Imhrachitim mijrmecophilum Aslnii. 9 • . ^ 5. Scleroderma H\t. g . fi. Scleri'derma maerogaxter Asliiii. 9 ■ 7. IHsxom ,al»s xaHthopns Ks,\\\\\. J. K. lUnaomphaluH xunthopua At>ih\\\. 9- I'LATK, HI. Fio. 1. Ateleoplerua rirf/inieniiis Aahm. f. '2. .Iteleopterux rirffinienxin Ashni. 9- :>. Apenex'm coronal a Anhiw. ^. 4. ApeuexUiamazomcu Westw. 9. .'). ('ephalouomui hjialiiiipci inn Ashui. ,-i • li. Cephaloiiomia gallieola Ashiii. 9 • 7. La'liiis uitjriapiloxiis Ashui 9- a. liethyhix pedatnx Say 9 • / I'I..\TK IV. Fit;. 1. Front wing of Kupaetiella at/ilix Westw. ^ . 2. Front wing of Sierola ( t) ainhii/iia Ashin. J ^. Calyoza xtaphjilhioidex Wcstw. ^ . 4. Kpirix col II mhiaHKH Afihin. $. "). Mexitiiia raiicoiircreiitiix Aisluu. 9 • G. Aiioxiix Chitleiideiiii Afihm. ^. 7. Per'ixemiix foridainix Aii[\\\\. 9- ><. Gouioziix pliilfitiotie .\sliin. 9 . I'l ATI- V. Fn;. 1. Ampiilieomorpha eoiifiixa At^hm. (f . 2. KmUoUmiix Itiidd'ii Westw. ^. H. Drijiiiiix amcricaiiiis Aa\\\\\. 9- 4. (roiialopiiaflarif roiix Anhm. 9- 5. Laheo tiiphlocijhiv Asliiu. ^ . li. Jiocchiia flaricollix Ashui. 9 7. I'hurhaa luticepH A>^h\\\. ^ . __^__ I'l.ATi: VL '---- ^ ^ ^ — — -^ FUi. 1. t'heloiji/iiiix CO uade II xi X Afihiu. 9- — 2. An teo II poll lux Ashiu. 9. 3. Aphelopiix melalciiciis Dalni. 9- 4. Halirofiellc iiriiialiix Sny ,' ; a. lu'ad of 9- EXPLANATION TO PLATES. 461 Flu. .">. Tri^'hontrriDin ftoridaniis Ashm. 9 • (). lutmcfiaxpiliiH enjihrolhorux A.sbiii. 9 ! "• Ix'iid of ^ . 7. Mvi il-dciildlim Ashm. ^ ; a, heart of 9 • 9. .ttritomii8 americaiiHH Ashm. 'hm. 9 ; <(, heart of .1. /((V/^r Ashm. ^. 2. Vrraphroii jxiiictafiis Ashm. 9 ; ''• lieart of J . 3. A'eoccJrtj)/*)!*^ macronfi/rMs Ashm. J; «, heart of 9. 4. Trimovua americainm Aslmi. ^ 5. rhanurv8 fioridnnus Ashm. 9 • 6. Trissolcus brocliijmcmv Ashm. 9 • 7. Telenomns s])hhuji8 Ashm. 9 ; ". c? aiiteiiiia. 8. Dissolcus nigricornis Ashm. 9 ■ 9. Aradophagusfasriatiis Ashm. 9. Platk vm. Fig. 1. Pentacanfha canadensh Afihm. 9; ((. a1)(lomeii. viewed from the side. L'. Triaaacantha americaiia Ashm. ^. '.^. Xenomerus ergenna Walk. ^ . 4. Proaacanthn carnhorum Rih-y 9 : "• c? antenna. ."). Teleas paUidipeH Ashm. i \ a, J antenna of T. coxuUx Ashm. (i. Hoplogryon hmgipcunia Ashm. 9; a, ^antenna of ff. 8f>7i/rt;-i«.s Ashm. 7. Gryon horeal'm Aslim. $ . 5. Ceratohmi 8 cornutKH Ashm. 9- 9. Jjwus amcricanun lh>\y.; . IhroiDitra hicolor Ashm. 9- !». MacroicWut lloridmut Ashm. 9 I ", J antenna of .1/. )m(iroyitxlir Ash\i\. 7. CaUiaceVvt httiriuclux Aslim. 9 ; "• . < 'rcmastolxvHii hivnlor Ash\\\. 9 ; "■ S antenn;i. t. Hddronotiin hisuliirhi Ashm. 9 ; "• cf antenna. ."i. Idvis (Viua Ashm. 9 • ' (5. Jtanthoacclio ameriiaiinn Ashn\. ^. 7. Sjiat'uaioH 2)H'>i. /MxfijJfiint's Ashm. Pl.AlK XI. Fig. 1. Iphclraihchis nmvrii an H8 Ash\\\. j. _„—--_---_.—— 'J. AUoiropa (tmericaiia Ashm. 9; <'. r? .•intenrr., 3. MetacUsis belonocnema Ash'u. 9 • 4l!'J EXPLANATION TO PI-ATES. Fk;. 4. MoHocrila varinain Ashiii. 9 < «. c? initcniia. ' ; 5. iHOHtasiuH miiscuhiH \i^\i\\\. 9. fi. Inostemma Creii8uni \sh\\\. 9. 7. .icerota cnryw Ashiii. ^ \ a, 9 .nitfiiiia. 8. I'ic>itoj)leiira aiiilluH "WnWi. 9- n. Xentoiioiiia itUip( s Ashm. 9 » "• (? antenna. 4. Sartogaster Hoirardii AHhni. ?;«,(? antenna <>f N. utiomaUrentrix AhIiu.. n. Sifnopeae rufipcs Ashni. 9 ; "• cf antenna. 6. < wlopelta niirubilis Ashm. ^. 7. ^itio})edi{t8 error FiUh ^ ; a, S antenna. 8. Amitl^8 ahiirodinh Haiti. 9 j «■ e8 Ashni. 9 ; «, sis 2>Ii(lo Ashui. 9- ' ' Platk XIII. Fig. 1. Erilri8ao)nern8 acidoinyio' Ashux. 9 ; "> c? abdomen; /», J antenna 2. Jl/i«<« (/Za?;rrt Ashm. 9- 3. Acrojnesta Horirn iida Ashni. 9 • • 4. Jielytn froiitiilis Axhin. 9- ~y. Oxylahia Kpino8ii8 Prov. 9 • 6. (inetiis meUipes f^'iiy ^ . 7. A'eNo^oma maiidibiilaris AkLiii. 9 . ' Platk XV. Fig. 1. Zelotypa longiconiis Ashni. i . 2. /V(H^><7i8 fl»»o/i8 Ashm. 9 ; a, t? antenna of 7'. fd/i/ornicd Ashiu. 3. Zygota amcricnnn Ashm. ^; n. front tibia. 1. Aclhlii riifopi'tiolata Ashni. 'i . , r>. Psiloinma coliimbiiiiiiim Ai^hm. ^ ; «. ,^ antenna. (5. l8marii8riitiiiIo8U8 VuTHt. ^ ; 9 antenna. 7. Aco1u8 Zabrinkivi Ashm. ^ . . • . .t. , 8. ^-Incc/o^rt /lir/j/roHS Ashm. 9 • Platk XVI. Fig. 1. Pantolyta brunnea Ashm. 9 . 2. Polypesa Pcrgandri Ashm. 9 ■ 3, Thoron paUijtes Ashm. ? , EXPLANATION TO PLA'''':8. ' 463 Fm. 1. IleiiiUvxis sitbemaidhiatuH Aahiu.^ : u, J tmteuuA. ■>. rarameiiius paUidipes Aahm.^ . G. Caciis wmnthi Riley 9 . 7. SpUomictus armatns \^hn\. 9 : o,j anteuim of .v. //«ritw»i>. X. HemHexo(hx ftoridaiu, Ashni. 9i «,. Ceralojirin hi/i(scalip(ti Asliui. 9 . 4. Trichopria rufipca Asliiu. 9 ; «, C. U. S. NAnONAL MUSEUM BULLETIN 45, PL. IV / tuPSENEL.Jl-WlST» 2 SiEROO-Cw ^ r.*LV02*-*£s ^ EPvRfS-wtiTw > wEsr TiUS-WiSTw h *NOXUS-T.^«», r>H^\ cJii^iiyy^ ^^ 7 PE"i&£fc*uS-»'j«»» fit GO»>iO. NORTH AMERICAN PROCTOTRYPID/E. U. S. NATIONAL MUSEUM BULLETIN 45. PL, V ] AMPULlCOWOBPM*-»SHM. J2 EweOLtMuS-wri^'- 2 ORVINU^-L*' ^ r h BOCCMUS-Mm*. ^ Od^^TOPUS-LjuoSM S LABEO-M <^'^W c4^*^'*n'. f^^. PHOR&AS-ASMW NORTH AMERICAN PROCTOTRYPID/t. U. S. NATIONAL MUSEUM BULLETIN 45, PL. VI J tHELor.vNo'.-*'*!. ^ *NTEON-Ju«i« c^^ • p^-ElCPUS-O*.." / WtC.ASPIi.U3 (J J. .r^M ^ HA6WOPE.LTE- TnOMi LVGOCERUS-FoBST i aTRITOMUS-l to L*GYNO0ES-Fo«ttt. NORTH AMERICAN PROCTOTRYPID/E. U. S. NATIONAL MUSEUM BULLETIN 45, PL. VII "^ ** «(^OMEnus-l«.lB t (>tHtAC'- JTHA -Z. THisSACANT iS5*CA"4ThA' *ih« HOPLOCHVON-*s*««» J7^ f 1 ^^.i^fi^— V PROSACANTHA-NtM CER*T06Toa-€U3 Af-^t /'^"^'a^--.- O SCELlO\(0«PHA--Ai^ (JiL,, .u J SCEliO-Ut.„i NORTH AMERICAN PR0CTOTRYP!D/t. U. S. NATIONAL MUSEUM BULLETIN 45, PL XJ 3 METACLlSlS-Fco%' S '50STASIU5-PJ1 ^ MONOCHI'T»-F^fiS-' ^ tNOSrEMMA-M«i / act ROTA- Ff>»*T (f P'ESTOdlEL'h*- to«r* 'JVN ciUciJ, / XE5TONOTUS-Fo«»T AMBLVASIUS-'M NORTH AMERICAN PRGCTOTRYPID/E. U. S. NATIONAL MUSEUM BULLETIN 15, FL. XII t LEPTACISFuHST. ^ POLVMtcUS-Fc«' ¥ A. ? ^v Ji tS0«MO«BjS-Fi.'f>iT AMiTUb HiiD. NORTH AMERICAN PROCTOTRYPiD>E. U. S. NATIONAL MUSEUM BULLETIN 45, PL. XIII OWim- dJ* 7 PROCTOTRVPES-UI* " COOBUS-J«».N* NORTH AMERICAN PROCTOTRVrlD/€. U. S. NATIONAL MUSEUM BULLETIN 45. PL. XIV I lEPTOBM*PTUi-Fo«»T Jl MiQT* roi«»T ^ *C«OPiE3T*-fOfliT. if. bELVTA-JvBiint O OAtU 4 Ji^rrtr iU( '\:><:^^'-' C C'rifeTUS-Jufc«. "i XENOTOMA-FciHiT. NORTH AMERICAN PROCTOTRYPIDyE. U. S. NAl loNAL MUSEUM BULLETIN 4'>, FL. XV J itVOTVP«-ra-»t •^ f'*NTOl_LH-rgH '-y X J JyOC'»«-f^j*t oiJlm lU 7 '<^ ACOLUfr-FoniT •WWCi NORTH AMERICAN PROCTOTRYPID/C. U. S. NATIONAL MUSEUM BULLETIN 45, PL. XVI ^'^7C^\ ) i r*'-''i'>t*T*-Fjj,i O pOlvpcja-f „^t Ifc rV V O 1MORON-M*!. ^ memil£X1S-Fc' y<'=^ ^ P***»MEilUS-WLiT« ('. CACUv-R„i, ^'-4^f^ "^ '">h,S„MUS-'VUT« uOKOTitOf^«-Fc«S» NORTH AMERICAN PROCTOTRYPID/E. U. S. NATIONAL MUSEUM BULLETIN 45, PL. XVIII 4!vUiV4^-K/*'^*^'^*^ / TROPiDOPRlA-AiMK. S. OIAI ^ CERATOPRIA-AM- PH>CNOPR>A-A&HM ^ MONELATA-FjttST. M-^ 'U <'^^*''^«i».='=*^ >='°^i><*>ji^^^ 7 BAS*LVS>WWTW f( MVRM£COP«IA-AJ— . NORTH AMERICAN PROCTOTRYPID>E. I N I ) 1 : X f(iplipt':i Hiicl s|if(it'H ill italies arf HynonyniK Time. Araiitlmsceli" AhIiiii ■j:ifi aiiuTicaniiM '.'iJO (111 vipCH ZW Arerota Fiirwt 'J«) caryic 202 cecirtoinyiii- 201 tloridaiia L'Bl iiielano8tri>]>liii 'M'l opaca 2-15 A«'liHta Fiirst 1174 Iwrealis :(78 t'lilifornica :i78 coiiica - . :i77 ' flnridaiui :i78 nii»eouriensi8 ;177 nifa ;)7G rufescens :t76 rufoi>rtiolata 376 ru^osopetiolata 377 Acoloidcs How 169 bicolor 172 Emertonii 171 ^' Howardii 171 nielleus 172 ; saitidis 170 seminiger 173 »ubapteru8 17:j AcoluH Fiirst 17-1 borealis 207 canadentii 207 rubriclavus 214 xanthogaster 174 Zabriskiei 175 A coretut Hal 1(62 Acropiesta Forst ;(5r! tiavicauda :t54 subaptera :!54 Alaptu.i Cress, nee AValk 292 aleurodis 29.! Allotn)pa Fiirst 250 americana 2.50 Ainblyaspis Fiirst 260 aniericanus 269 caliloruicna ... 268 longipes 270 roinutus 269 occidentalis 267 petiolatus 268 riiijiceps , 269 Amlln* Hald 292 nli'urodinii 29:i Aiiipiiliciimorplia AmIiiii T9 roiifiisu HO Pa en. .A ni>ctatii Fiirst ano calit'oriiicii 381 K'"rsie8 404 Sfiiniiini* 35g virginiriiH 405 .1 nUioptera If err. ,Sch 408 Aiioiniiiatiuin Fiirst 380 Ancipedias Fiirst 290 frr^r 291 iiicertus 292 pontatomus 292 ! Auoxus Thomson C7 Chittendenii 68 iipvis (58 [ raiLsruIus 09 j Anteon Jurine 94 inimitus 97 I pallidieornis 97 jiolitiis 90 Popenot'i ng punrticeps 97 riigosu.s 96 tibialis 96 I uuifasciatus 'Xj I Aiit«ris Fiirst 224 iiigriceps 226 virginicus 225 .\ pegiis Fiirst 226 td(m<;atiis 227 Apenesia Westw 46 coronata 47 A pliaiiogmtis Thoin.s 132 bicolor 134 lloridauus 134 inarylandicas 135 iiiffer 133 pallidiiics 135 varipcs 135 virginieDNis 13 , Aphelopus Dalm 99 afflnis 103 albopictus loi amorirantin 100 inelalcucns loi ruHvcntris ,.,, = .,...... 100 Aradopbagna Asbm 160 tawiatiiB , 160 id". 466 INDEX. I'a.'.'i A rtibohm Hal 400 Atol(M)i)t(TU.s ?"iir.st 43 nubiliprniiis 44 tarxalis 45 virsinicnsis 45 AtritomiiH FiJrst 121 nmcricnnus 122 Baryconus Fiirst 215 n'oaiitlii 215 floridanut 228 Baaalys Westw 442 anali:) 443 brpvicomis 440 califomica 440 fusripoiinis 444 picipes 444 ruflfornis 445 iitalienaiis 444 BiL-oneura Fiirat 232 cinc'iventrit 213 bicolor 235 floridana 217 Ba-ini, tribe 167 Baeus Hal 1 77 aniericaniia 170 clavatus 179 luiuutus 178 uiger 178 piceus 179 Belyta Juriiip :J55 erytlirojius 357 frontalis 35G viellipes 361 inonilicorniB 356 texana , .. 357 Belj-tiiia-, subfam 345 Bethylus. Latr 52 armi/erut 34 ccllnlariti 74 contratus 54 conftrictus 53 muicubis 02 ])e(latii8 53 prolnnijut 72 Bocchus Ashiu 91 fiavicoUia 91 C. Cacus Kiley JL'.f a'cantlii 224 CalopUnohia Kiley 241 Callicerat'isci'H 123 Calliscelio Ashm 218 laticiuctus 219 Calutelcia West w 212 cinctiventris 213 Ueideniannii 213 Marlaltij 214 nibriclava 214 striata 213 Calyoza Wef tw 57 Va mpylonyx Wust w [1 )ryinu8 ] 85 VatUhm Fiirst 2fi5 maefilijie.i 205 Paee ( .'f|>haloiiuniia We»l w 47 i-yiiipiphila 40 fiiiridana 431 gallicDla 48 hirticollin 438 liyaliDippiiiiiK 49 nii1iili|ieiiiiis 49 Ceraphronina-. siiblaiii 102 Ccrapbroniui, tritx' 122 Ccraphron Juriue 123 ampins 129 armatug 106 auripes 125 basalis 127 <'alifomicu8 127 oarinatna 131 f usciceps 125 Havisrapns 130 glaber 130 longicomis 132 maerniieunis 136 inelanooerns 129 mplan8 431 lougieepa 429 luegaplaata 430 pusilla 430 CeraUiliin Hal 381 Ohelo}:ynu8 Hal 92 atnvenlris 93 cauuiIenHis 93 Ilenshawi 93 < 'lieliitheliuji Hciuli 85 Chlidonia U. Sell 4tH) ( 'hronioteleia Aaliin 219 seuiieyanea 220 ('inetus J urine 359 ealifornicus 361 niatr. subfaiu 77 Entumacit Fiirst 388 Entomius Herr. Schf 380 Epimece* Wt-st w 277 Eplsemus Thorns !)9 Epyris Weatw 57 a'neiceps 59 analis 60 carbouariiis 59 columbianus . 60 grandis 01 Ufviventrii 34 niei;a<;ei>lialii8 61 occidentalis 5!) Tiilipefi Say (iO KritriHw>ni<'riii> .Vslim 298 I iMi foveolatus 74 Hubbardi 76 iuega<'epbalus 74 lilatynotic 75 jtolitus 75 (iryoii Hal 205 borcalis 207 cauariini» . . . . IIi>I)lii):rv<>n AhIiiii. . . l)riM>liyi>t«'rnii. . . . <'luri|H'iiiiiH loii(;i|H-niiiH ... . iiiiiiiitiHHiiiiiiM ... t>)mi'iiri|ieH ]iti'ri(liH rutip«'8 Hiilitariua tibialis Hoplopria AhIiiii . . . . piilrliripfuiiirt. .. Ilii|iIoMin .VhIiiii tloriilniia IlyfierhiHiM Kiirst Hy|HM'aiup.sit< Furxt pluto "«<■• 47 49 L'INI •-•(M •M\ •.'02 •-•OJ '2iH •JOti •Mr> 205 203 ■Mm 388 227 228 177 20« 298 I. Idiotypa FJirst 403 IdriH FiirHt - 23.1 lievicppH 235 IiiuHUtiuniit Hal 256 californira 259 ( 'resHoni 257 Horni 257 LiutuL-ri 250 I'at karili 258 Kilej i 258 iDOHteniiiiiiii tr:l;ii 248 Iphetraim Fiirst :i27 ('iiua4lfiisis 329 : liiiigivciitri.s 330 nigrii'lin lis 328 palliptts 328 I Isorlioinliiis Kiirst 270 : arizoneiisis 277 liyaliiii|ic-tiiiis 270 Isusta.'iiiis Korst 254 ai'iftiii;i 255 I'lisciiiunuis 255 iniiscutuH 255 I,. LalH^o Hal 87 loDgitarsis 88 Iia.sutii8 89 ti'xaniis 89 typhlocylw 89 Labolips Hal 400 La-lius Asliin 5<» nigripilitaiis 52 l.ii'Uiis Asliiii <'iiiitiiHii-il, I*u(!i'.' riiti|H'.s 51 trirai iiiatiiM 51 tro^iMli'mialls 51 r.ajyiiiMliM l''iir.-liiliis 274 llavii-oriiis 275 tloridaniis 272 loiigivt'litris 273 Iiiilx-srcns 275 piiiictatiis 272 l>iinrt iccps 275 nijciri^ps •. .. . 272 striatifniiis 273 Li-ptiirliaptiis Kiirst 349 ciMiiciis 350 riiCiis 350 Lobosrcl ilia West w 383 Loxotropa Kiirst 412 abniptu 414 ralirnrnica 415 roliiiiibiaiia 113 tia vijM-s 415 Itarriiijitonii 435 viHUa 447 nana 415 ]>f zoiiiacliiiiilcM 41G niticiirnis 414 l.ytriM't-nis Kiirst 107 nrmatut 100 californiciis Ill Horidaniis 108 iiig»r 110 j'acifinis 112 pi<'ili«s lOD C dentatiis Ill stigmatiis 110 triticiini 110 lAjUha Tlioins 357 Macridiyniiis Kiir«t 348 MaiU>ilrt AhIiiii . . . . 104 itnnatu* 10* MeHitiiiH Spinuln 62 liifoveolat UH 66 lirarlivpterun 'M riiUfoniicUM ■. BTi miiiiitiiH 6.1 monticolu 63 iit>vHi{eii8ia 04 tf XHliim 67 viiric'iiiiverciiBiH M MetjklisiH Filrst 251 lielimocnemir 252 ••rythropus 252 Micropt Hal 120 JUionopria Hal * 403 Miota Fiiret 351 aiiiericana 35;! analis 3.V2 coIiiradenHiH ;t52 glabra 352 Monelata Forst 441 liirtirollia 442 iiipllit'ollii* 441 Mouocritii Forst 252 canadensis 329 I'arinata 2.54 melanoltropha 262 nigri|M's 253 Monomachus '\Ve«tw 345 Myiiiarina) 9 Mymaridio 26 Myinaroitlop 26 My nnt.eomorj>hui Wi'st w 78 Myniiecopria Aslim 447 mellea 447 Mystrophoriis Fiirr.t 9H Mythras Hal 403 K. Neoceraphron Ashm 136 inarroiifiirnx 136 pi8tha<:antha Aslim 221 iiiellipes 221 Oxylabis Fiirst 357 spinoauH 3.")8 P. PantoclU Forat 366 aualin 370 lalilbruica 371 coloraUenais 371 rraHHicomia 369 Havii>«>8 370 floridana 372 inxiilariH 369 inemiiit 448 r»ntiM-liit Fitntt— (,'iintiiiueii. Pae<*. iii<';:uplaNta 368 iiKiiitnna 3tiM |ii<'i|M'i 368 rulVHicnn 372 iiiliraiHia 370 I'aiituly ta FiirHt ;i83 briinnca 383 I'aranirsiiiH Westw 391 rlav i|H-H :i»3 )>rc(;imfiisirt 395 palliiliiM^M 395 parviiliiM 393 HpinoHii.H 394 toriniiiatim 393 iitalit'nitiK 394 Varaiiero'.a ( 'am 72 1'fdiiioiiinia Fiirnt 78 I'entacantba AhIiiii 181 canatli'iiHiH 182 Perisenius Fiirst 69 fluritlanus 71 I'lirniii'iiidei) 70 ni<'lli|M'H 71 roininiiiH 71 oregonenHis 70 prolon^uH 72 I'liM-nupria AhIiiii 436 atliiiiH . . 440 apt«ra 439 liiiiiiatobiH- 438 iiiliiiitixsiiiia 438 inontaiia 440 parva 440 .Suhwarzil 439 virjannira 4U8 Phanariia Tlioin» 139 flavipen- 141 fluridaniiH HO iipat'ii.s 141 ovlvorus 140 Phiirbas Ashiii 10 laticep.s 90 PieHtoplfura FiirMt 26.'> maciiliiwH 20,". PlatygasttT Latr 322 acb'ulatiiH 326 apliidis 325 canadensis 329 carya- 323 error 291 floridcnnis 324 graeilis .326 HpiTirkii 324 hiemalif 311 «uni8 325 pallipes 328 riatygasterimr, siibfam 247 I'latygaalerinl. tribe 202 PlatymiHchiiH Wt'stw 411 torqiiahts 419 I'olygiiotiiH Forst 209 ai-tinomcridiH 317 alnicola 310 nii<;ulatim 319 artoiiiiHiic .109 470 INDEX. Polygnotim Pornt— fontlmiiH!. V»jn\ •Hti'iicoU 320 DHyiiaplw 315 ii»ri|ili <'yiii|ii<-ola au •lipliwiiliM • 300 •■iirutiH' ^ 315 ciiurn' 318 niiconii* 321 lloriiluiiUH 318 liiciiiiiliH 311 biiacliiii'ii- 318 laticepx nil lii'vicullix 320 piiiicolu 307 |iriixiiiiiiH 312 nil.i 315 Mili< iiola 305 Hiilitlaj;iniH 307 Htriati<-c]m 308 striaticolliH 310 tiiiiiitluH 310 iitulieiiHiH 311 vt'riioiiia' 317 virKiniuDHin 300 viticola :!13 I'oly iiitMHH yiirnt 277 americanuH 279 alnicola 283 iiiiripes 283 raiiatleiisiH 278 ('i>ni]iri'ssivciilris 282 liipiiiicola 281 iiielliHcainm 282 nigrifuinur 280 pullipes 270 picipes 282 vancou vurunsis 281 Polyiilanut Nees 79 Poly jifza Fiirster 387 ri:iiia 11(4 crytlinipiin 195 (lavicoxa I9iili»yl vaiiira 189 plfiiralis 195 piinctivt'iitriH 192 ]iiisilla 192 Sell warzii 192 Htriatit'ruim 188 Htriativi-iitris 197 utalifiisis 189 xaiitliraeniiiM 243 Luggeri ' 246 ledipcMliii 245 INDEX. 471 Srrlin Lntr— ContlouHl. l'«g«>. oiMriM 34S ovi vonm 24.'l liitlliilirorniH 244 |iHlliH 244 riiHMiitrix 245 St'clininorpliii AHlini 23> luMiilia 240 lougit'oniiH 340 Si-eliiiiiiiiii'. Hiilifain 136 Socliimini. tril>« 208 Scleivchroa K.irBt 40 macrogatter 41 yallieola 48 etniipieola 49 ScltTtMlerniaLalr 40 iiiiijia.Hfer 41 thoraiicu US contraeta 34 Sc'lerogililia Slefano 77 Seipliim Sclirk 3:i3 Si«i(ila Cameron 55 ainbifjtia 5" SpiirHsion Latr 2:17 fanielicuiu 238 nigrum 230 pacificum 2:«9 |>ilo8iim 238 Spiloniicrinl, tribe 385 Spilomicnis Westw :t96 urtnat.iiB 397 atriclavns 39S iitropetiolatiis :t98 HavicorniH W8 foveatiis 399 longit'orui!* 399 Synarra Fiirst 400 Sytiarsit Fiirst 13'_' Sjnoi)ea» Fiirst 2»*5 anteunariic 28t* cornicola 288 inerniis 287 melauwerus 289 nigripes 286 niflpea 287 ruflacapua 288 Teleaaini, tribe 180 Telt-as Latr 198 coxalig 199 dolicliiH'eruri 145 iiifimcatipes 154 linoaticpps 199 luaiitlilnilaris 1!00 «»rgyiai .. 152 ])allidipe8 200 tphingU 155 Telenomini, trib« 138 Telenomns Hal 142 aiiaste 233 arzamte 157 bifidns 154 brochymena 164 californicus 150 'r)'i«nimiMfi H«l- (.'ontiniitMl. I'aR*. clirysopH' 159 t'liHioTHinpH' 16(1 I'ti'IixlaMiiHH ISO ilolirbot'frim 145 eiiHfhilti 182 Kt'oiiictrii' 157 gnopliii'liP . 149 KOHHypiinila 156 Krarilii'orniM 149 prapta- 151 licliiitliiiliH 152 Hiibliarili 149 iclithyiirn' ]5;i iDl°iiH('ati|iea 154 KiH'l>« 106 utalu-iiNiH i4g Tliliboneti -n Ttiiiinx 107 Tlioron Hal 168 paIli|ieH 168 opaea 141 Trichaciiit I'rov 177 clarrttitf 179 Trii'hariH i'iirster 294 ari/.oneiisiH 290 auripcM 297 bniniifipes 296 rubieola 590 ruflpes 295 virginifiisis 297 Tricbopria Asbm 431 caroliueuHis 434 flavipes 436 Harringtoiiii 435 b'rticollis 436 paeifica 436 pentaplaata 433 Popenoei 435 rufipes 434 Zimmeniianui 434 Tricbosteresis FJirster 107 floridanus 107 Triniorurt Fiirster 133 aniericana l",9 Trissacantba Asbm 182 umericana 183 riigosa 184 Trissolcns Ashm 161 bri>cbymen« 164 euschisti 162 472 INDEX. ■ Trissolrna Asiim— Continued. Page. niiirgantiie 163 pmlisj 162 rufifM-apuH 16:J tbyantii' 163 Xropidopria Aolini 416 rarinata 418 conica •. 418 simulana 419 torquata 419 tetraplasta 420 Tropidopsis Ash 402 clavata 402 Xenomerua "Walk 184 pallidip«8 184 rubieola 185 Xenotoiiia Fiirst 362 iiiHiidibularis 363 .Xiintbopus 363 Xe8tonotiis KJirst 265 andriciphihiR. 266 Z. Zaerita Forst 292 Zelotypa Forst 364 eoloradentit 371 flavipen 365 Iongicomi8 365 ruficomiH 366 tezana 365 Zygota Forst 372 americana 373 califomica 373 texana 374