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Les diagrammes suivants illustrent la mdthode. rata elure. 3 32X 1 t ' : 2 3 1 ■* i" a 3 '• « 1 5 6 isn ISS2.] 290 IWilliston Syrp1ii(l;i-. In- \)r. S. W. Willi.-loii," wns in-e>-Oino(l lln-uiioli i]io Scc.ivtarv, with :\ lettci' fi'oiii ilic aullior, dated X(;\v Ilavuii, Yale (!()ll('oc ]\[ii.<(«iiiu, May l'^, 18S2. " The C]as.siJicatioii of the Ungulate Mainrualia "' was read by Prof. Co])e. Mew iioni illations, Xos. l).'.!), ilGn^ ih;]. wore read. Tlic l^ivsideiit re|i(irtod that !,(> li;nl lorwiirdcd a incini»i'ial ti) tlu' I'lvsidciit mFiIk' N.m.v V,)i'k SiMiato, in lavoi' ctftlie cdiu- i:i{ii.\rr.M. l'iii;(; 171, line '21, iiflci' .)A/*.v, install I/clir/i.s. Page 474, line 'S), omit llilii'tix. Page 471, line ^'7; roiiiovu .-Jilui ojiix'ti and l/i/ii mirrlds Iidui .I'.i.i- KiD/K, unci iii.-itM'l miller Cusid.'K (liin' .'N) iIic iianics .■h'li/ini'"(l,ii unci lIi/(S/iiirftox. Page 1 7-"), I'dol-noli', Ibi- viti,'. read \ ig. . •yri>liid;r. ^iiissii'v. Altliong. ..,.11 and t'orty deseril)ed gen. ,,,, , ,,. , [.j. >riu nu enaraeler- llv w iii neei-^iveiy dislin'-uish ;iny eoiisideralile iiiiinlier. .\s a natural ri'sn iniiny gener.i liave l)een loosely formed and mor(>. loosely de.;„ ntiNTii) .Miii.sT :t, ISH'.>. ov'T I «, isn 1SS2.] 29i) [Willisinii. Syi"l'1n\'T*r. S. W. WillistDii,'' w.'w ]irc>(Mil<^il llii'>>ii'_ili llio So(!i"t'tar\ . with n lollfi' fiMiii the aiilliKf, ilalcil ^v(.'\v IlaNcii, Yale (\)ll.-o Ariiscn.m, May 12, 18S-J. " The Olassilloatioii of tlio I'ligulatc }*[ammalia" was read l)j Prof. Co])0. New i)iiii' illations, No-;. M.Ml, liG", '.'lil. wcrt^ rcail. The I'n'.-iilent r('|ioi't('(l tliat he hail ioi'\vai'il''il a niniii »i'ial 1o thi' I'l'csiili'iit, of the Ni'W \'oi'k Siiiate, in i'a\oi' ol'thc coiu- lijrlion ol'thc J'ala'ontoln'jv of Ni'w York. I'ower was given to the Hall * 'oinniittce to proeiire a eopv of tlie ]io!-trait of T>r. Oeo. \\. \Voo;l: anil the Presiilent was cinpowereil to fill tlu' vacanr\ caM-cil liv the deatii of Sol. W. ]Joheil--. a nieniber of that ( 'omniitteo. Anihoritv was <_:iven the l/ihrarlaii to ]iMr»'ha-e \"ol-. F-XII 'I'lMiisaclions of the Anu'rican lMiiIolii;ji(;al Assoelatioii. Ami tli(! iiiecitin^L;; was adjoiirneil. ! •'>. Confrihiitiiin /,) (/ .l/iiin>i;yiijih of t/n Xfi-l/i Aiiu I'lron Si/rjJiahv. 11;/ ])i\ S. (fti'iid Iiif"!'!- th(' Aiiii'n'i-iiii I'/iHosop/iiriiJ Si)i'ii ti/, ^f>ll| I'.K /■'>^'.'. ) Tlic Syrpliiilif form one of llic must, diflliailt fiimllic-^ of Diiilcru 1i> clii^sity. Allhuuuh comi'oscd llirouuliuiit the wnrlil ot'nlioiil niic liiniilnil niid I'nriy dcsirilii'd 'icni'ni, tlicy ]>rt'srai lu) iliaracliT^ tlml will (lr(i-;i\cly (li;-1inL;iiisli iuiy coiisidcnililc iiiiiulicr. As a iKitur;il ri'^ult, miuiy ui'in ra liiivc 1)i'cn loosely formed ami more. loo:,. i'ii(Nii:i> .\ri;i sr :l, ISS-.'. OV'T «7 Willistori.] :}ou I May in. resuscitatofl, a.ul have also rccos^ni/.o.! an intrrestin^' new sivcos ot -s- ./,,../.,• Mac. hitlHTto known only fn.n, South An.ni.a. Simv th^' pnl-l.- ;.Uiou oftlH- .atalo.^nu. fo.u- new ^^.m-v. hav.. lurn .Ir^.Tilu.l by M. I..g''t and llu. writn-. n.akin- in all sixty two -•■...■ni now known troni ^o.Mh Amerirv As rc-ards tlu" ilistiil.ntion of tins.. -Mura Iwlvo arc pecu- ]!;„• to onr tanna, viz : J::np,o,U.. ('o,nxt,ihnn, llHln„n,w, /■:,(!< >n<,n>!,u„ h:„rh!m,.,aUotn, 'l\'„choa>cn.h, /'h r.H.sf, ., PJn^lonl.,, Vr>o,'r»r-. ^•>;"''- /„, M.nnnoidus, an-l Mivo^ja.Uv. TW tirsl lour ..f Xh^.. v;^^\^ (•>•<- ,„,„/„, have n.ver yet b.-c. fo-md in the Easten. States, y ule tin- fol- ,r are not vet known west ..f the one hundredth n.endian. lowin;^ ...V. .. -. - . vi/- Truih/l>J>nH, Pi/ropJuma, Doro., Ornptamu^, Il/n.f/o'. Iniclnn-mnu*, I'hraWisu'x. Sowr/oster. Somula, yVninoxtoma, iW'\ Mlh>ii.>. Of these no do.d.t the diHtribution w 11 yet be toun.l .nor.' extensive. Indeed tlie wide distrilmti.mof speeies and genera of the fanuly ov< r our eont.nent wdl not readilv be paralleled by any other family of insects. T„ the present paper T have -ivn a list nf all the d..serib..d sp<.eit.s known west ..f the one hun.lredih nu'ri.lian. These^ with the speeies de- seribe.l as new, reaeh yet but ei^.tysix ; -d' tb.m titU-tour are known only from the West, while thirty-two, or o.er ...u-lhird, are distributed from the Atlantic to the Pacilic; rei;ions. Five .-enera, of one or two species each, namely: Trhjlupln,^. D/ro- ph,v,m,^CnpesU,hna, ArctophlU,, and I'U-v.Ua.U^, are unknown to n.c : their systematie positions have in .ons.Mpicn.-e been whody .Irawn from de- scriptions and li-nres. They, to-elher wUh such spe.ies as are nnknyvv n ,., ,;„, ,r, i,,,ce.led by an asterisk. An exclamation pmnt indicates Iha the loealitv, or localities, precedi.,- it are giv.m from speeunens tha I hav.. examined. It has not been deenn.l n.^cssary to repeat any o the hiblio.-raphieal referencs or synonomy that are dven in Om..,, Sa.'ken s catalogue, ex.'cpt smd. as will facilitate the identilication ot species. Ihe speci.nens which I have examined in the preparation of this paper, from Vvashinu^ton Territory, Ore.i^on, and Kern Connty, California wen col- lected bv Mr. 11. K. Morrison; from Mendocino county, Caldornia, by Mr O 'P. Baron, and Irom Wyoiuin- ('.dorado, and Kansas, by Mr h. wVluil.l an.l mvs.df. Th.' sp.-.a.-s that 1 hav.. Llentdied, or des,.rib,.d. .-r that have been previously recorded fn.m ,he West, a.v ,ninted m small capitals. I desire to .'Xpress my thanks to Mi and IT. .V. Hnms, Baron V. U. von W. II. Patti n and Drs. (i. II. H.nn lor kind favors in the pr.'paration < )f this i)aper. Osteii Sacken, o f llcidellierj;, 1 am lumh im •bled To fol his kindly int. 'rest an.l advic.'. The foll.)wing table of u-.meric .irr on ps is based ess.mtially uitoii Sehin.'r's in his Austrian nil)l era. It seems iinpi that of dide to iiniirove il> general fealiires so fat as our American genera are c.)iiceriuH > t I 1S,S'.'.1 **''' l\Vil!lsl()ii. 'I'dJiil', <\l' ijl'iiil i>x of iji I" I'll . ' J —Small cross-vein of the wing distinctly before the middle of the dix'a! I'l'll, usually sinsiirlit .■iiid ivci;iiiLiiilai-. Iliml Iciimni ii-imll\ siciiilcr, nui iliiikc'iM'il : ilw third iDiiniiiiiliiiiil vein nirdy nnirli hciil. into llu- lirst i>(»l('rinr vein, ulioii(i- tlimi the iimd. //— Miiri^iiKil ceil opi'ii, /. -., ilif srcoiid loMuiludiiKil vein li'i'iiiiii;iii« ill tJK' liordiT of iIk' winLT. ji—Pac'c not t\tl)crciil;it(', iior(li.-,!iii(tly f'iiriiiiitc' ; not cxcMvalcd lie- low ilif iMil"iiii;i' in iifoliif : liypci'stonKi not iirodiH'cd. (Small, nciirly l):irc -pi'cics, will) siiorl o\aI alidonien) II. •lii — Face liilicri'ulatc, or li\ pcrstoina prodin'i'il. * -AtidoniiMi in outline, linear oi' oval, iu'ver narro'ved toward the ha<(', or elnh chapel. d'eLJIlla' ofu>nai >i/.e.) |- -Body nniforni tnclallie i^recn, or inetallie jrreen and Idaek ; ahdonuMi oval or idonu^atc, never slenihr ; iVniora not thiek- ened, nor I'aeial tnliereie dissimilar in mah' and lemah' III. }..|-_I51;i,k withjnteous, reddish or yellow, when luiiforni'.y hiaek the hind I'eniora thiekeneil IV. fl !■— i'daek or .greenish hlai'k. with yellow or yellowish >tripes or inuuls, or face more or less yellow. <__Pjice hlaek. ahdonieii slei'der. wiih yellow or urceni-h yidlow interruiMed i-ro:--, lian'N -^ -V. ^^- Faee partly or wholly yellow. ;ilHloniiii;il markinirs v(dIo\\ . -'~- |)(n'snm ot' tlioia\- with yellow lateral -tripe- "VI. __^-I),,i'ira\ wiihoiit y(dl()W hiieral stripes. VII. ^»_Ahdoni('n coniraeled towiird the hase, mure or le'J*- [.Miiy K». ^Irf'UonoN sj). iiov v "Wn'iliiiicjton Torntnrv. f'liliforniu ! Tliis is tlic liri lime lliis iiciiiis )i;is liccii icconlcd fioiu tin; I'licitie (•0!isl ; fi;j,lil or niiH- .siM-cics iiri" known from the eastern part of" the (;on- tinent. AA. — Scutelluni uilhuut |>ofMl> ; tliinl antmnal joint elons^alc^ ; face i)ro- (lueed downward, nliUi-dy tul)erjecting in outline (hind femora moderately swollen) ; face dark without yellow Pipiza. Asinglespcciesof this genus is recorded by Oston Sackcn (West. Dipt. p. '522) from Sonoma Co.. Cat. In Furope the species are very numerous. CC. — Face slightly carinate below, partly cu- wholly yellow, eyes pilose, in life usually with bri'j.Iil striiics (small, mostly finely punetulale ; abdomi'ii oval, obtusely rounded behind, black or black and red, not banded) Paragus. The species of this genus like the preceding are very dillicult to sat- isfactorily distinguish. Three species are recorded from the Eastern States and I have at least three more yet unnamed fixmi the Pacific re- gions, Pakagis DiMiDiArus Lw., Cent. iv. Oo. "Western Kansas, Colorado ! III. J. — Small cross-vein before the nnddle of diseal cell. 1. — Antenna' as long or shorter than the iiead. «. — Marginal cell open, aa. — Face tuberculate, or hyperstoma i)roduced. *. — Abdonum oval, never narrowed toward the base, or club- shapetl. f. — rniform metallic green, metallic green and blaek, or black species ; hind femora never swollen. '^^-•1 '^^-^ rWilliston. D. — False vein of wiivj; iisiii.lly Mulistinct or alxciit ; fnml in ., or fart; also ( f , ) with frausvcrsc '.« rinklcs ; liinii holder ol'.-cuiriliim sharp . small, oval, niiMailii', i ' a iy i)arc spccifs Chrysogaster. a.— Outer i)oslerior angle of lirst posterior cell olitiise. (7in/s»,j, !.■im canimt Ik- used in Loew's or Scliiner's .>ense even as a suh-genus for the Ts'^ortli American sjjecies. Our species may he tabulated as follows : a. — Tiiird Joint of antrnna' orate or orhieiilar ft. — Thinl joint of antenna' elongate c h. — Third joint of antenna' ovale c. —Third Joint of antenme orbicular d. r.— l)(,rsum of thora.K opacpie black {,^) ■^nit/rijhn, — Dorsum of thorax not black opaciue, with dark striiu's ; finely punc- tulate ; tip of fourth vein bent inwards infjrodtft'di.o. third ; the liiird Joint some- what narrowed beyond the middle ////•///(-'// ///,•*. — Antennjc i.ol longer than the face, second joint short xfiijinxli/s, sp. nov. CmiYsoGASTF.n sTrr.M.vTi s, sp. nov. cf^V- Antenna' black, not longer than the face, first joint short, second joint twice as long, about one-fourth as long as Ihird. Face deep green. shining, nearly smooth, with sparse pile, and a silvery white triangular U illiMud. :m I.Mri.v t'.i. S)")! 1)11 I'acll Mill' liriil- llii' ryi- nlp.ivr; ll \ |iCI-tn||i;i Tnitcll |in< iiiiifonn. 'I'lmiMx and sciitcllmii sliiiiiiiu: iiii'.'ii, Ihii'ly |iiiiutnl:iic, Willi nl>-(iiiv jiilc. AlMlnimn hnyad. Mack, with slii.ri aiiprc^-^i il w hiir- |ii||.. Imh liiilc ^^liiniiiL;'. in the male llif ciitin- maririn with liic liyji i|)yiiiiiiii >liiiiin,n hrasxy lirccii, the \ciiliT sliiiiini: like tin; iioiilcr. Wilms fuscous, sti'riii.'i lirown. nuicr aniciior aiisrlc of tlrsl pos- tciior c( 11 (il)iuM'. f.ct^'s Mack. Loul;-. c<>i|i. f. T mm. California. CiiiivsiKi \s(i.i: r.i:i.i,rt.i'.s, sp. uov. (^^. .\nlcnii.T niMi-h lunwu. a liltlc loimcr liian llic face, .sccoiiil joint a litllc -lioriiT ihan lliinl. Fa.v -i n lihick. li-htly rii-osc, wliiie l)iln>i', liy|icr~!iiiHa lundcialcly pvodiici'd di>\\ inva id. Froii;,;'. •••iiniu;i(. ( ^i) not swollen. lV(,iii ( . ) wiih well maikcd lalcral niirosilics, eyes ■■wit li i!Tcu;uliir n.irrow lim-ir marking.':-. 'I'lmra.v and >rn,illiim \>n'i\\\ i:rccii, scaliriHN, w iih four iiarrnw copiH ry , Iripcs. .Midonini oval, a liltlc darker .^rccii. luoiv shiiiiuu' o:i liic liordcrs. punclulatc f,iM;-s i)lark, l>a>c and tips of all ilic lilii.r. and first joinis of larsi yc!lowi>li ivd. \\in,i;-s nearly hyaline, sli-hily clouded in tlie oiuer ccll.s, stianiii brownish, last scctioii of fourth vein ,-liaiulit. reetaimiil.ar, joinin.ir the third nearly at liuht nii.iilcs oppoMie the lip of s( ('(Mid \cin. clouded with l.rowii, ilie <'loiid eiiher c.\- teiuliin;- aero--s io lip of secoiiil Vein or more or h-s iiiieirii|)ted in front of tile third, l.nu's. corp. C. T mm., W'asliiiiLLton Territory, (,'aliforiiia. Hitler- I'n.iu f, iiitiihiK Wied., which it closely rescinblcs, in ils larijer si/e. the second joiiii of antenna proporlioiialclv a liti le >liort(,'r, and llie concaviiy of lower part of face beiu- les.s, in the ab-ence of abdominal fa.-cia'. and in the lerminfition of the tburlh vein. ('iiitvs(i(iAsri:R NKMioviTTA'rrs r.w., /(it. f (W's. Xatnriv iSTfi. p. ;13:;. Colo.. W'ashiimton Terr. ' Calif DD. — F.ace anion Willi pi|,,s,. ,,ye.^ hiHierio undescribcd in till- country. '1 hree or four of Dr. I. oew's si>ecies ari' unknown tome, but this writer's familiarity with the u-eir,!,-. ..ii.iblcs his specie, lo be placed with a u'ood deal i>t' certainly from the iiy of the eyes is less, the antenna' usually lighter colored, and ilie thiiil joint hiruer. iHsi:.| rm I Willistitii. "• — Kyi's (list i net ly i)ilos(^ ; _ j,^ — 1'',\ cs Icirc /^— Tliinl J. lint of .iiiiriiiKf ( • ,) mumII. ovul, l)l;i(kisli ; face witli spais.' loii^- pile; wiiiL^s not liuliHT Idwaitl the lia~.' ,>rri,l,„t^liH, -.p. nov. —Thii%l Joint ot'an'.-miii' ( ; ) lafLrcr, MilKpiailralc, niiijisii; wiii;:s iiMl,<,.r towaid tiic l.a.M' hiMoi,h(l„ih„ux, ^^. wuv. <*. -SrutfiiiiMi vvitii hri^ily liaii-s on its hofdcr ,/. r-Si'ntclliuii witiioui lirisiiy liair< on its hoi-dcr h, or less of tiie lafsi, liitcous ,. — Anteii,)!' leus liiteous, posterior lilackisli witli tlie base and apex of femora and tibia' and hist joints of tarsi Inteons pbnaatK. , that T ix-lieve it to be th.c r:'.!;!C. ! li.'ivc no other spccimiMis with which to compare them. Cni'.ii.osiA coMosA [-w.. Cent, iv, (i(i. Colorado! Red River of the .\orth. The previous remarks will apply eipially well to this species. Ciii;ii,()siA o((ii)i.;ntai.is, sp. nov. ri'.— Frontal triangle black, with black pile, swollen with a depression ; antenn.e black, third joint somewhat brownish, nearly orbicular, small, arista with scarcely i)erceptible pubesc'enco. Face shining black with sparse liitescent pile, scare(dy concave from base of anleiinje to tip of tubercle, deeply and shortly concave below the latter. Eyes thickly pilose, lutescent below, fuscous aboyc. Tliorax deej) green black, witli brown or blai'kish pile, intermingled with shorter lutescent. Aluhmien oval, not at all slcndei;, deep, somewhat metallic green, shining, pile lutes- WilIisto;i.l aoG [May 10, cent, lonircr lliiiii in Uic tliorix, cspcciiiUy on the sivlos of tlie anterior !»cg- ineiits, ilio (lorsuiH in tlie iniiUUc iieiirly ]kuv. Lc;ts liliick with bliick and luti'sci'iit pile, til>i,i' reddish at Inisc antl cxtrtMne tips. Ti'ii-u];u lidit yel- low, ha]l(Mvs yellow. Winij;? smoliv brown, daiivcr in front and at the root. One specimen. California. Lonii'. cori). 11 nin\. An additional species from California lias lariicr. more reddish siilxiuad- rate tidrd joint of antcnme, arista siiorl pilose, no pile that 1 can dis- tingnish in llie faee, and tlie pile of tlie body sliorter. Ciii;ii,()srA i,Asi()riiTiiALMi s, sp. nov. cf. — Frontal triangle moderately .swollen, ^vith an impressed longitudi- nal line, and ligiit yellowish pile. Antenn.e brownisji red, third joint rather large, nearly square, arista bare, bla-k. Face dc(^p black, shining Avith yellowish pubescence, slightly excavated below the antennje, con- siderably i)r()diiced below the eye.s, a well marked groove begins at the base of the antenna', runs obliciuely outward to the eye, and then curves downward near the ey(! into the ciieek. Posterior orbits below broadly dusted with yellow. Hyes thickly reddish yellow i.ilose. Ti\orax metal- lic grd'ii, shining, thickly covei-ed witii light yellow jVdc!, on ti>e pleuric bushy. .Mulomen l>road oval, shining l>lack, with abundant pile like tiiat of the thorax. Ti-guLe light yellow. Legs black with yellow pile, fen\ora nt the tips, base and tips of tibi;e, and basal joints of intermediate tarsi, yellow or hUeous. Wings sid)hyaline, with an indistinct brownish spot near the nnddle, basal part yellowish. Long. corp. lO-Unim. Four speci- mens. Colorado. Female specimens that may l)eli>iv!i" to this species from California have the pile much shorter and more grayish. They are too badly preserved, however, for me to determine with auv degrjc of assurance. Ciii:ii-OMA iukiim;s, sp. nov. 9-— Front and face shining black, i'.- former on the sides aiul the latter exc<'i)t tlie tubercle lightly covi-nnl with minute gray pubescence. An- tenna' blackish, third joint twice as long as wide, reddish on the under side, arista bare. Tliorax metallic green, lightly punctulate, pile very short, Avhitish; sciUellum with an indistinct, transverse groove. Abdo- men black, with a metallic rctleclion, smooth, shining, elongate oval, Avith u small tuft of whitish pile on the side of the second segment, and very short, elsewhere ; second segment with Iargeov;il spots in front, narrowly separ.'iled ; third segment with liroati cross-bands in front, atlennated in the middle ; the fourth seuinent with similar but less attenuated ; the fifth segment partly or wholly, hluisii green, f-cgs red, posterior femora an- nulate near the middle, or almo..i wholly brown or blackish, terminal joints of tarsi infiiseated. Wings Iiyaline, stigma dilutely yellow. Long. Corp. S-'.l mm. Washington 'reriiiory, California. Five specimens. Tlie abdomen is not sulliciently fasciated to |)lace it among the J/tlanos- toiim ; in everything else it presents the characters of Chcihsia. s\ 1882.1 307 [Willistoii. s\ CiiKir.osTA >;r(ii!H'KNMS, s]). iiov. ^. — Deci) bhick, eyes hare. Froiitivi triaiig-lc and faco sliiniuLf lilack, the toriiKM- fossulatc, the latter very slighll}' excavated lu'low tlic aiitciiii;e. Antenna' small, l)asal joints black, third joiid reddisii-hrown or biown, rounded. Tiiorax hlack. nearly o|ia([ue, with short l)lack pih; above and lonuer on the pleura' and scutelluni, the latter shinint^. Abdomen sliort, broadly oval, depressed, opaipie black Avith a bluish cast, i)ije on the sides of I lie anterior segments, reddish-yellow, anterior angles of third and fourth segments, shiiung metallic. Tegula' with blackish border, and a fringe of l)lack pile. Legs black. Wings lilackish in front, clearer Itehind, veins black. Long. corp. T-N nun. Three specin\ens from Mt. Hood, Ori'gon. Chkflosi.v I'Ain a, sp. nov. $— Shining greenish-black, with a 1)rassy reflection. Eyes bare. Front .1: d face shining, the former with short, fuscous pile, the latter moderately excaA-ated below tlie antenna', tubercli! broad, obtuse. Antenna' black, third J'>int oval, somewhat reddish lielow. Thorax and abdomen Avith short, !utesc(Mit pile, sparse; on the latter, A\iiich is elongate oval. Legs lut(!ous; the anterior femora toAvard the base, rings of llie tiliia', ami ter- minal joints of tarsi and the posterior legs except the ends of femora, iiase and tips of tibia', brown or blackish. Wings lutcscent, veins black. F.ong. Corp. 5-0 nun. Mt. flood, Oregon. IV. J. — Small cross-voin before the michlh; of the discal cell. 2. — Antenna' shorter than the head. an. — Face tubenadate or hypersloma produced. *. — Abdomen linear or oval, m!\'er club-shaped. It — ]?lack Avith luteou^, reddish or yellow ; if uniformly black, the hind feuu)ra thickened. E. — Tlyperstoma produced into a long, slender porrccled snout ; fcmin-a sk'uder (the third longitudinal vein joins the eosta beyond the lip), Rhingia. The single American species of this genus R. iinsirn Say, is ver\- coinmon ill the Lastern States, but T have lU'ver seen a lihiiigin from beyond the ^Mississippi. EE. — Face not produced into a snout like hyperstoma, femora nuire or le.",;* thiekencil. F. — Face not produced, extending but little beyond the eyes, in ' much more tulierciilate than in V ; himl femora usually "with spines be- h)\v, abdomen oval. >lostly black species or with liiteous mark- ings at bas(; of abdomen, scutelluni, huincn'i, cheeks, etc Myiolepta. Four species have been described from Eastern North America, and tin; genus is now recorded for the first time from the West, i'KUf.'.\.Mi;u. i'iniA)s, soc. .v.\. U^V 2n. I'Iikxtku Atcit.,ST !!, J^'^y'i. WillislDii.] ' o08 (May 10, Myiot.ki'tx vAiiii'F.sLw., f",.nl. ix. T<). Vi,..i„ia. SiKTinuMK very M],. of ij,,. ron • h. lonuv. on th,. bonier of iIh^ s.ail..llnn,. Ab,l,nn,.n very >hinin- with sln.rt, whitish lul,., lon-.T an,l bnshy on th,. si,h.s ot the .seeond se-ment. ilalleres liu-ju v..|low'. Le-s '•lack uith bla,k pile. Win-s sm,.ky or brownish toward the end >>!..-ma bn.wn. l.ong. .'orp. 7-8 n.m. Thive speeinn^ns, W'ashinivtoii I crrilory : Ml. I[oo,l, ()rei;-oii. FF.— Face m,.re or le.ss ;>rodneed, extending ronsi,l,.rablv l„.low the eves hiiln.r wln.lly or in lar,-,. p„rt Inteoiis or rechlis'h. the arista "fre' (inently pubescent or pilose. G.-Fa..e carinas, abdomen oval Brachyopa. Our speeii.s may he tabulated as folh.ws : '/.— .\rista distinctly pula'scent : face and antenna' vellow or yellow- i.-h re,! ■ ■ , , , /). — Arista bare. . . />. —Dorsum of abd,.men brown ■/■•fi'nurihi'cii — Dorsum of ab,l,nuen yellowish-r,.,!, with brown ineisures, and a brownish median lin,. '/,,;///,/ '•. — Face and front brownish, densely clotheil with -ravi: Ii |>ollen." abdomen mostly l]r,)wn ' •/• ' -Face yclh.w, upp,.r pari of fr.mt ( V j browmMi-black. antenna. y<'ll,.w, thinljoini large ;abdom,.n rchli.h-yrllow with brownish incisure.' , ,. IIKAll-l, sp. llov. ^ Hk-Ukvoi-a? notata O. S., Cat. Dipt. 247. White Mts., X. ][. f(). Siuketi) ; .Mt. Hood, Oregon : Wasliington 'I'erritory ! nitAciivorA vaciaO. S. Oana.la (O. S.) ; iCern (',.. California ! A single female sp,.cimen from this locality agrees .soelos(.ly with Haron Oslen Saeken's doerijaion that f b,.licve it to be the same spcei,.s. Th(. legs and anienna. arc, iiowev,.r, m,Mv rcldish than brownish, and lii.^ wings are ([iiitc. hyaline, imu-e so than the pivc'diuLi'. JJllACIIVOl'A MKDI.V, SJ). n,lV. 9— Face and lower part of fn.nt re,l,lish-ycllow. th.. latter projerling rather more than not.il^i; antenna. tlii. sanu. coh.r m- a little li-i-liler, the tiiird J,.int very large, arista br,.wn, y,.|lowi^h iil th,. bas,., "fnmt in the upp-.r iwo-lhinls black, grayi.-h p,,llinose. |),.rsnm of tli,,rax neirlv ♦ I tl 1.SSL>.1 309 [Wilhstnii. lihick, \\itii sliorl wiiitc pile and tliick irray ]ioll(ii, Icavin;^ tlini- ilurkcr stri|)"s, -cuiflluiu rcil ; airlimcn yrllow, tlir -•■unu'iils wiii' n:ir-(i\\- pos- li-rior lir(>\viii>li liii'-. \.r\i< rcdili-li-yi'llnw, lln' liiml 'iliia' s.)in<'\vh:it lirowiiisli. icniiinal juint- nf tarsi rii>ciius, or hlacU, hind Icmoni a little inci-a->atf. Win^- hyaline with a sli-iilly yellowi-h ihiLii'; tiist posterior cell hrielh- iieliolate, the lia^e of second iiosierlor i-i-ll is an obtuse angle, al)our midway between the two preeedin:'; speeii-s. Loiii.-. eorp. O-T nun. One specinu'ii, Kern county, Calitbrnia. G-G. Faee more pfodueed. obtusely lidierrnlate ; abdomen lona' (xylo- liionui; with seutellar. jioslabir. doisopleiii-al and mesopleiiral liri.-tles. All the femora thiel^i'Ued and iri'eLrnlafly -piiiose. . . . Eugeiiiamyia \\ l>tn. F.i(.|-.NiAMVi.\ KiFA \VlsUi., ( anada Hntomoiogist, Vol. xiv, p. Sir (';ditorni:i ! J. —Small efoss-vein. liefore tlie middle ofthe discal eell. !>. — -Antenna' slnifter tiian the liead. (I. — Marginal cfdl open, ii;'. — Faee tulxTCulali'. *. — Abdmnen elonixate, not elnb shaped. |j.)._I51aek or greenish-black, wi:l> yellow or yellowish or fer- ruginous iiilerrnpted abdominal ero-s bands. y._Facc black. H. •Winiis not lou'ier tiian the abilnmen ; ocellar tubercle large, promint'Ut ; idMlomen dcpresseil, long, (dliptical, somewhat nar- rowed ai tiie base, i lie lighter markings ferruginous or oranuc-yel- low " (Schiner) '. ^^Pyrophcena. HH.--Win!:-s longer than tin' abdomen ; ocellar tul)ercle not unusually lariic, abdomen more sh'udcr, the cross liands yellow, or gre<'nisli- yi'llow. I. Anterior tiiiiic ai;d nu'iatarsi of male dilated. . .Platycheirus. Fi,.\TY(i!i:i II s (;i AtMi.vit s Say. Washington 'I'erritory, K'ern Co., CaliftH'uia ! I cannol di^li"'ruish specimens from tliese localities from our Eastern ones; liie e(dor of liie nind le^s vary much a- ihey do in the F;ist. « ? Fi,.\TY(Hi:im;s iiYi'i'.iiUDni-.i s Slacker. Another s|)ecies fivmi \Va-lnnecific cliaracter, and that the name /'!■ Ii/rln ir'/K shotdd he given uji as mi-lea-!ing, and all the species placed \inder MiltiiiiiHlniiiii. /'. iiH'tihuihi^. is xai'ialile, .and only a large atnouut of material will settle the question whether they are a group of closidy allieil species, or nu'r(dy varieties; in the tbrnier case, tlu- genii.s siiould he letaineil, in the latter, it -liould he united with Md'Hiii^lDiiiil. and tarsi of miil(! not dilatctl Melanof toma. Mi-;i,ANO.ST.)MA TKiurxA O. S., West J)ipi. I}-,';',, Wasiiini^ton Te;ritory, California ! conunon. MKf.A.NosTOMA S( AiAnis Mci.uM'ii ; Scliincr, Fauna Aiistr. Dipt., 291, Colorado! Knroix- and Xorth Aniorica. VI. J.~Sniall cross-vein before the middle of tjio discal cell. ~. — Antenna' short,. (t. — .^laruinal cell i)\wn.. aa.—Faee tuberenlate, hyperstonia not i)rodueed. *.— Ahdoinen oval or elonpite, not club shaped, ttf. — Hlaek or -rreenish-biai'k, with yellow in:irkings. ^^■ — Fa<'e wholly or in part yellow. ;:. — Dorsum of thorax with yellow lateral stripes. J.— Abdomen with seven visible segments, the hypopygiuni unusually •'"■•'^'' Sphaerophoria. I have; numerous specimens of this genus from the Western regions, among which there are probably four or five species. I recognize, how- ever, only one species, viz : SiMi.-Kitoi'iiouiA MrcuiuA O. S., West Dipt., 3:50, California ! * SiMi.KiiOi'iiouiA suLiMiuiui-KS ThoHisou, Eugcu. Uosa, .jOI i^iirnhus), O. S., 1. c., Calif. ' JJ.— .Vbdomen not showing nu)rc than six .segments, hypopygium not unusually large. K.— Eyes of male with an area of enlarged f .cets above ; abdomen rather slender, fourth .segment with yellow median stripes and oblique side spots AUograpta. * Ar.i.ooHAPTA FiiACTA (>. S., West Dipt., p. ;}:!!. 8anta Monica, Ciil. KK.— Eyes of male witliout area of enlarged facets (fourth seo^ment of abdomen fasciate). ' " L.— Thorax with a median, dor.sal, cinereous line; ocellar tubercle re- mole from vertex; slender species. M.— I'osterior femora enlarged and bent Toxoraerus. » ToxoMKiU',s GE.Mi.\ATUs (Say). Wiishington Territory! California, Eastern States. .SVvrtv^ _r/(w///f/^^ Say, Com])!., AVr. ii, 80. To.r<)iiifr>/n iu)t,itnx .Mac(|., Dipt. E\ot., r» Suppl., !).'5. Minmjntpttt iji'iniiiiitii Schiner, Novara Ivxjted. (). S. Cat, Dipt. j). 12."), AVest. Dipt., ]). ;);{(). MM. — Postorior femora simple , Mesograpta. M.:dO(;iiAi'TA .MAHGiNATA CSay). (). S., Kern Co. Cal. ! Atlantic States, common. il . b. — Hands of alidtmien broadly interrupted : Xantii()oi{.^m.\[a i)ivis,\, s|), nov. r? V-— Fiice and rlieeks yellow, or roddisli-yellow. Front motallif greenish black, continued as a broad stripe to the base of the aulenuie, somewhat exi)anded below, on the sides yellowish. Antenna' black] somewhat ivddish below on the sides of the second and third Joint near th(,' base, third joint oval obtuse as in fdi.v, but a little smaller. Dorsum of thora.x deei) metallic green with yellow lateral stripes, pleura' yellowish with white pile. Scutellum a somewhat translucent yellow, its base nar- rowly black. Abdomen : fir.st segment with a small yellow spot on each side just under the iudteres, second segment with an oval spot on each side, soimnvhat attenuated toward the middle, third and fourth with large rec- tangular spots, separated by nearly their own width ; fifth with an ante- rior fascia narrower in the middle and encroaching slightly upon the pre- ceding segment. Legs yellow, anterior and middle femora sonu'tiiues narrowly bn wn aniiulale near the 1)ase, posterior legs mostly brownish or blackish, e.\:'cpt the base of femora and knees. Wings hyaline, with a smoky tinge, stigma yellowish. Long. corp. 9-Umm. Eight specimens. Washington Territory. VII. J.— Small cross-vein before the middle of the discal lell. 2. — Antenna' short. a. — ilarginal cell open. aa.--Face tuberculate, hyi)erstoma not produced. *•— Abdomen oval. ttf.— Black, or greenish. black, with yellow markuigs. §^• — Fivee wholly, or in iiart, yellow, r-.— Dorsum of thorax uniform, without lateral stripes. O.— Thickly pilose species ; abd' men (piite oval, broader bevoud the mid- tile : face iierpendicular, sr.inewhat projecting below anil reachinn- far back untler the eyes, (iiasal i)ortit)n of abijtmien yellow, ternTinal portit)n black, wings with dark spot. /,. Incovnm) Leucozona. Li:tj( o/.ti.NA i.rt tuiiM (Linne), Schiner— Meig. Beschr. ill, ;il;] ; Tab. 30, f. 27 {Syrphus) ; Mt. Hood, Oregon ! Europe ; North America. OO.— Rather l)are species ; abdomen with yellow bands, either all en- • tiri', or one or all inlerruptetl. P.— Fyes of male with an "rea t)f enlarged facets above ; front very convex : hypopygium very small. . .'.' Catabomba. Cat.\1!0MI1a I'VUastui (Linne), (). S. Meig., System Beschr. iii (.SV//'. W illi.-tiiii.i ''-l-J I May I'l. plum.) Kuroiic iiiul ^Vcstcni Aincricii. Very iilnindaiit i?i tlio Pacijc rc- p;i()ns. PP. — Eyes of lualc witlmut area (if rii!ai'u:'(l facets alioNc; Iroul didiIit- atcly CMiix'cx ; liypopyiiium imi wvy small, Q. — Sixtli aliiloiuinal scLiiucnt of male as loim' as two prcffiliiiL!; tosctlior, but narrower, soincwliat tiiliular, unsymmctrical ; on uiHlcisidi; of seventh sei;:nient two loniT liiieaf siil) jiafallel appendaiies, ai'iaiate, hidenticniate at end, einiiedded in grooves wln'ii at rest. In llie fe- male fifth scLTinent lialf as \tn\'S. as precedinu,-. Scailellimi nii;e!i raiseil, exposinu' inetanolum Eiipeodes. EriMCdDKs voLicnis Ct. S., West Dipt., ;!'2l). AVashinixton Territory, I\ern eonnty, Califoniiii. I Nevada, I'tali, Colorado, common. QQ. — IlypoiiyLiiuni without slender a]ipeinla;:'es, sixth seinnent of male not jieeuiiar ; fifth segment of female one-third or one lourth as long as pi'cceiling. R.^TIiird loiiiritndinal vein witli a di>tinet sinuosity ; third joint i( !■:. .s'// /•/;// v.s' Alciilici'. WalUer, T.isI, etc., iii p. ■"):',). lluilson I?ay Terr. ; Oston Saeken Cat. Dipt., '.2d \a\.. p. .'U, noie 20."). A single specnnen from Mt. liood. Oregon, resr'mliles I), lit.ni very much, but the two small ovai yellow spots of the second segment, the re- maining segments bi'ing dark metallic green with an ojiaiiue, black longi- tudinal line, stem to indicate a distinct species, and apparently Walker's Alridii-r. The generic dillerences of both tlu'>e species, however, from some specii's of .s'///'y»/// (( .r/., >'. Idjijionir/t.s), are feeble. RR. — Third hmgituiliiKil vein straight, or gently eurveil ; third joint of antenna' sIku'I oval " Syrphus. This ireiius ap[iears to be a prominent one in the Wi'stern regions ; maiM' of the lla^icrn sjieeie-* appear, and others have strong resemblance-*. Two Sjieeies whicli present well marked characters, I (le--eribe as new. The following table contains, ■ 1th the exception of dliuidi'itii:*. tiir.siitiifi, iuul finnijii aids, all of the known species north of Mexico. It is composed iss-j.j :n3 iWillisli.il. of th(! two ttiblcs given by Oston Sarkfii error. IJost. Snc. N. II., IMTo, ]->. l;;s, anil W(. — Three principal cross. h.ands liroadly interrupied ''. b. — First crossliaiid broadly ;ind distinctly intei'riipled in both sexes. ...c. — First cr()ss-l);ind narrowly interrupted in the male ; not interiaipted in the female /'. c. — Abdomen ehjiigated. narrrow, linear ilitu mipeit. — Ab(h)m. n oval d. d. — Femiira black at the base ''. — Fenioi'a yi'llow at the base riht sii , , itrnfritni. e. — .Miildiuinal cross bands do not reach the lateral marizins //. — .Miiloniinal ci'oss-banils reach cpiite tlu' lateral margins /. /. — I'lyes pubescent tnrct(.i. — I']yes trlahrous rihci^ii q*. (J. — Cross baiuls allenuati'd on the sides opiinilor. — ('ross-l)ands reach the sides in nearly their full width ; not attenuated near the er.ds l.txunirii. ft. — F.ace yellow (ibhreriulnx. — Face with brown stripe aiiifrifdinii'. i. — Abdomen elongated, narrow, linear j. — .Vbdomen oval /. j. — Fyes i)idiescent nlnluiH.-i, s[). nov. Eyes glabrous /.. k.- — .\ntemia' inserli'd on yellow gnuind initb( llitdrxiK. — .Vntenn.-e insert(,'d on bhuk ground ^t iiiculnhix. I. — Fyes pubescent vi. — Eyes glabrous n. in. — Alidomimil spots st raight //. — Abdominal spots coarctate in the middle, souiclimes broken in two ; ^ iiiiiiihipis. ' ' " '( iiiWudcnK. n. — Face yellow ; third longitudinal vein straight ro/i/mitii.r. — Facial stripe anc front black rihttlnnx, sp. nov. 0. — Abdominal spots lunate, face with black on the tuliercle . .hiiiihinii'ux. — .Vbdominal spots straight, lace \\ithoul black. . . .(llyjuiirtux. >p. nov. Sviipurs i.Ai'i'ONK t s Zelt., Dipt., Seaiul. ii, 701, ;.. Wyonung 'i'err., Kansas, Oreii'on. Southern California, Xew Kn'j.')and ! Crcenland, Furope. Specimens laiieii in ConiU'ctieul. late in Oelober. lenc the sinuosjiy oi'thc third \eiii as strongly marked as in any Western ones, 'i'lc s|u'cies is wides|U'ead and common. Syiu'IUs oriNATOK O. S., West. Dipt., :!"2T, Oregon, Washington Terr., face conspicuousl V brown or black in the mi(hlle. 314 [Miiy 1''. ^■'"^'""■^ .,,. ...tvv..ntv-nves,M..Mm..nsaro . . v,nvvvcullvafommnM si-.'icn a- i Califurnuv! AVP'^'^^^ • ^ -lo.,. . :,, „,v toll'-''"""- . . n ^ Pr Bos. Soc. 'N.'f- »'■•'■• ...,,„,„ ,„■< uir.Ksn l/nuu", <>• S-. ' ^; ,, ,,. siuTimcns with the ^^'I'^'vun UelVnuorahlac-U, ^^^-'^-^''.^I^^Lu.u Co.. CaUlonu.. basal portion oi AVf-t. l)ipt> •*~'^ ^ *Sv,u..ns ruoriuTrs O. b., ^^_^^ ^^^^ ^•3SS,^^-- -— "■ lustre, a. <1 '■>'" ,„„„ ,,,„,.k in ll"' 1"«'' l'''"',, .,. ,-,Ui' lW!irl,nr«» ».'."■""* ■ '„.cf..."..l...-. S.T.."."''' '■> .■',,,. I ,.-.» ..l..<-k. "■.■""""' ,,■„■. "«'•■■;'"■ ,H....-al .....r?i..«. """*'':"'""■, ,;a,ll.. in.i.v, ".■^■i.t l...lt ■" »'" '" '-,„„, 11,0 ......Me, y.'"';»- ^^"',- „,;„,l, OiTS"... „r„w.,. L....g. "•>"-'- "" lalV,.- ?.■.•-.. W;>'l- ' |,,„,u al Ite '«'»?• '^' ..,, so.'oi..! a...l ,o...»«..." "'"";" .";',S,m »l...t^ l'"-' '■"•'■' l'»" "?" ; ,: .opara..'.. "V ''"« '»■■" "' wt,, V atl." '"■ "■'■ "" ""■ ™"'iftU «"..,..« on U.o 1S.S2.J SIJ Oi.J fWillistoii. and 1,:,.,. or,ihh. ,,,,„,„ ,„ .M-ow„i.l,-hl;uk. Win,, .in,,-.] ^vi.h l.nuvnisl. s,.,„.. a.>k,.r „,inl lon.in„,i,.:.l v.in v..,,- sli.luly ..u-vcd. Lou^: t-mp. 'J-10 mm. l-.,nr s,„.rinK.ns. VrMsi,in.ri.,„ T,.r. VIII. J.-Sma]l cross-vein l.rforo tlu- muUU..., „f the discal cell ". — .M.-ifiiiiial (cll ()|i(;ii. ""■*:;:*''"';•; '"'"■'■'•mate ..r hypciNtom:) i)r<)dn(vd. '■"llulprd!''" ••"""''^■^'■^' t"^^'"-'! ""^ l'^-- '»mv .,r l.-s. el,,!,- S.-P,,.t,.rinr f,.,nnra slender ; wini^^s usuallv with hn.wn ; faee tu]„.reu I''"'; li.NP'T>lo,aareirea.ing; l.-np.r, nu.re siend.r speeies. . . ! . . . Bacha i(h-:iptiiiiinx). Tl,e dillerem.e- he,n-e, n these two ^enera I canno, sa,i.n,c,orilv n.d, Dip,., 'J:;,. (,.,.. Xew Mexieo and • ^UAdtA AN.,,sTA(). S., WeM Dipt., :]:;^, Calilon rnia. pe- SS.-Posterior iVnu.ra sv ollen ; hyperston.a produeed ; short, Muall s T.-lIyprrslomaprodu.vd anleriorlv, in l.rolile (hvplv eoneave fro.n j,.nt..nne to ,,,,: ndrd j-nnr of ante,n,n. .u'ar v\ S^^^^^^^ fourth longitudinal vein joins the third in a righ, ' ,r aeu'e a,;:,;"'; Sphegiiia. vvH^'whii's";'''"'" r"""^'"" '''■■•••'""•>■ -'^ <^--"" -n-esp,.nd prelty VN.II M,hs. ..onvTA Lw., S. iNK.s.ATA Lw. an,lS. .innrvriMsrw ).iit m the absence of better material in ti.is ...nus [ w describe them. ■ill not venture to TT.— If yperstoma produced more dow AsrtA mkt.\li,k:a, sp. ii,,v. J^-~^'T '""''""■ ""■"^"'' '"'""'■'' ''''"•'- ^''*^'!"- t'x' latter while x'llinose. Antenme bla.k. third Join, brownisl, hl,.H.k below, n.ar the -ase n.d. llu.rax n,e,allie-green bia-.k, liuHy pun,.,u>v,l, ,\bd,„nen like '^' tlH.ra.v. the third s..,,nen,. in the tVanale. with two, s.nall .,r in 1 bas the tMict,spo,snearthe front; in the n,al,. the front half eve-p, the anodes red ^'°; "■ ''^' '""•'■•'"'• "'•'! '"i^l^« r Willis'oii.l 31() [Miiy 1.1, Tljo bliirk of th<; 1(',<,'3, in ono specimen, includes a larger part, witli a portion of lh(i anterior and niiiMle tarsi. IX. J.— Sinal] cros.s-vcin before tlie niidille of tliscal cell. 3. — Antenna' sliorter than the head. aa. — ]Mariiinal cell closed and peliolate. U. — Second and third Joints of antenna' elr)nsate ; ari.sta very densely plumose, appeariujf like a solid mass. . . ^Copestyhim. * Coi'ESTYi.rM MAU(wx.\TUM f^^Hiay), (). S. Say, Compl. \Vr. ii, :5()() ( VoJturlht). Mexico, Texas. UU.— Third jniiit of antennte elongate; arista feathery c Volucella, P'"'""^'^' \ Temnocera. * VoLUCKLL.v AviDA (). S., AVcst Dipt., '533. C'.vlifornia. ^^Fexico. VOMM'KM-A sATiu <>. S., 1. c, Colorado. Ctali I VoLUCKLFiA r A 9(1 ATA Maccj., Dipt. Exd., ii. 2, 21, 1. Western Kansas I Texas, Colorado, ilexico. . YOLICKLLA FACIALIS, sp. noV. (^ ^. . ("losely related to V. crerta "Walk., but differs in the face being quite yellow, with yellow pile, and the dorsum of thorax and pleurae be- ing covered with black pile. Face yellow, yellow pilose, cheeks Idack, shining, bvre. Antennic : first two joints brownish-black, third joint red, or reddish-brown, arista darker, black plumose Front in female j'ellow, darker at the vertex, yellow i)ilose ; frontal triangle {r^) black, or brown with shorter yellow pile, vertex with tuft of long yellow pile. Tiionix black, shining, the dor- sum broadly black pilose, in front and behind and on the sides with longer yellow pile, pleura^ with black pile. Abdomen black, shining, second segment except the middh^ third or half, and narrow i)osterior border, light yellow, the narrow jxisterior part of third, the fourth and fifth segments- conspicuously red pilose, other parts of abdouK-n with shorter black pile. Legs black, black pilose, basal portion of tibije and all the tarsi dark red. Wings hyaline, the veins with brown clouds, a brown spot opposite the small cross-vein. Long. corp. 1-1-15 mm. Thiv.e specimens. California. The posterior part of the abdomen in V. crerta is usually black pilose without any trace of the red, but rarely in some specimims the abdomen is markinl precisely like fdrialls, and hence it is quite probable that s lecimens of the California species may sometimes lack the rufous pile. The black pile of the thorax will at once distinguish the species or variety if it should prove to be such, as in a large number of specimens of eceetib I have never found any with such thoracic pile. However, as regards its specific distinction, see Eristnlis flavipes mcbinastoninH Lw. ^ IHSL'.] ;u" [Wlllistuli. Tlic. 'j;f'nns 'IVmnofn-ii !<; nn \in-;iti-f;ictory oiir, ;niil I Iirlicvi' du'^Ii; to 1)1! siippi-c^scd. Till- chiiMctiT-i rdinl ii|,;,n :,ri> tin; nioiv slcu.liT iliiril joini MfanlL'iiiia-, an. I tin; pn'srnce of l)risilc>, on tlic scuh'lliim. I ilo not know (Mtlicr of tlic follosviiiii s|)e<-ii's : *Ti;.M.\oci;UA SKTKiKK.v (). S. \V(.st Dipt., :!:!t, .\<\v >rcxifo. *Tkmn-o(KU.\ MKCACKi-iiAi.A l,\v., (.'ciUur. 1."), Tu. California. // JJ.-Th small rros-^-vciii at or hi'yoml the niidilh' of tlu: di-cal ccli, olili(iiic. «. — .Viitcnna' with a (lili('. ij. — Tiiird lon;iiliidinal vein (l(('|)ly siinioii-;. J'. — Miii\u'iiial (■(■II cjo.-.c'd and pcliolaU,'. v.— Tiiorax ni'V('r with yellow spots ; winixs hyaline or with a dark >pot ; face oblur-ely tuliei-cniale " Eristalis. Ei,!z;liteen species of Kristalis ai'c recounii/.ed hy I'.aron dsten Sack.'n as liiivini!; been descriiied from America, norlli of >[e\-ico. More than twice; ius many names have lieen iiiven, chietly by AValker and :\Ia((piart, but tht.' facilities enji)yed by Ostcn Sackcn, toii'i-llier with his well-known ac- nuMcy and faithfnlness, render it uiinccu'ssary to any furtiiur discuss the ino-«t of lliem at present. Since the publication of this catalogue two species hav<.' hecn published by IJiH-ni in the AiiihiJvs ihx S„r. h'„t, d, Fiuiucr, IMSO, 'JKi-'-.MT. /:,'. ,/<.'/■, /^«( is iiiven below in i)arl : A', -.omihis --_ I], frinixn rs'/s Wicd. I hav(,' endeav(u-ed to tabulate l)elow all of tin; sijccies known to me, and have added the diaiiitoses, or descriptions, of all the remaining, wiili the additi(Mi of what I identify as E. .U, /:/,'i,t''' AVied., a South America-, species = /i". miilrorJus (.). S. (non Walker, unde-erilx'd, see cataloLMe, etc.), toirether with two lu-w ones. Tiie g.Mius though laru'e, and espc iall\ predominating in America, is readily delined, .showing comjiaraf'.ely lit- tle structural variiUion. The eyes are contiguous, or suii-conligi.ous, us i- ally pilose, although in .some species, ixufeiui.i; occupying only a spot in the ?-'iiddle ; in inn uk they are nearly l)are, being sparsely pilose near the top. The third joint of the antenna' is sub-(iuadrate, tlius .'it (uicc; distinguishing it from ViiliicfUit i\ut\ T,iiiiinrn',i. The fu'e is never produced, in nearlv iill of the species with a not very prominent tubercle, Avitii a median stripe and che(!ks black, bare, and shining. From Milixii>iUpots or stripes on the dorsum of the tliorax, which is, however, sometimes distinctly fas- ciate or viltate with dull gray or olivaceous ; from the latter genus also by the absence of pubescence on the wing, rhough, indeed, this rhar;icter is only relalive. There is a tendency to dill ■fences of coloration and mark- ings between the mule and female, sometimes so striking as to cause one to doubt their relationslii).. l^neh diflerences may consist in tlu; ab- sence of yellow upon the abdomen, or in the presence of stri[ies of the WiUis..,,..] -'^^ t^'">-'''' tlionix. T\u- winu's show scarcely any variation ; tlic third loiiniludiiial is ..Ic'cply lii'iit into lliu lir>I posii-riur cell, and tin- nuiruiinal fidl is dosed, tliu hitter eiiaraeler si'paraiin;^' it from all (■Ihcr Xorlli Auieiiean -'eneni oxcupt the one> lueviously mentioned. Ekistaijs. 1. Ari-ta nakcjd or indistinetly pnl)e>eent '^• — Ari>ta pilose or distinctly pube-^cent (near the hase~) :>• •i._Sentelliim of the same color a-- thorax, ahdoinen without limht mark- inj;s, shinin.ii-, eyes nearly hare, spotted in life, dorsnin of thorax in female distinctly vittate '"" "•"■ —Scutelhim yellowish translucent, li'xhter than llie thorax : alnlomen unlcolorous, shininij; blackish, with indistinct or sul>obs()le|M sid(! spots on second se^-munt, pile of eye mostly confined to an elongated vertical elliptical line. Size and appearance of a honey-bee fc/ia.r. 3._Thorax with thick or long pile, posterior border ol third s,.^-inent not velvety lilack, wings mostly Avith a brown sjiot 4. — Thora". and al)di)men nearly bare, or willi short, not wooly pile, the abdoi.iinal segn\ents usually with ligliler hind borders. Less ]io,„l>iii<-]\k(i ^• 4. — Tarsi red, largi; species : Intmblc bee-like •>• — Tarsi dark, sn\aller species •'■ .-).— Thorax wholly yellow pilose above tles. Thorax with black pile in the middle when seen from the side lliin'jiL'tt var. uuhmoxtoinus. 0._Abdomen with yellow or reddish on the siih's of the second sogment only, thickly mostly black pilose (dsewliere. posterior half of third, and the fourth segment shining ; legs black n,i>ttiinlL Third s(;gmcnt with yellow or red, the pile of the abdomen almost wholly yellowish, and long '• 7._Abdomeii mostly reddish-yellow with a nearly equal median black stripe ; eyes barely meeting in the male ; legs hhwk. uKU't'iiiny. sp. nov. —Thin! segment with a smaller reddish-yellow spot in the side, second segment velvety black, third with ii triangular velvety expansion in jYojii vi'cidoitiiJift, sp. nov. y._Third abdominal segment with a posterior velvety black cro.ss-l)an(l lint titti rrH,dal in the middle •^• —Third abdominal segment with a distinctly interrupted band, or else wholly sliiiiiiig. Not with a comidete band l-'- i). 'J"iH)rax with transverse olivaceous fasci.e, front narrow above ( ' ).10. — Thora.x without such fascia- 1^ 10.— Hind femora not swollen, second segment of abdomen with large si)()ts, third segment in the male, with anterior rectangular spots Avanting in the female, and hind borders of second, third and fourth segments yellow. Legs varying from ahuost wholly yellow with black on tips of hind femora and tibia', to black with yellow knees. . . trl|i>ii. Ii.iinl- nf tln)i:i\ cun^iiicuuii-, tliir.l SCJ,Illriit ol' ;il)il(i|ili'll in fi'lll:l!(' nt'lrli willi |T(1 or yi'llnw >iilr s|>(il>. utlicrwisc rcsriuliliiiir llir inrvinii- sincic- very iniic'i, iiiul liki- it (|nilr va rill I lie i-inrtcrniii. 1 1 . — Tliinl ^I'unii'iit of iihdniiiin linmilly uii'l ciiiisiiiciioiwly ycllnw, juiiiiiii: the yellow (jf'llic s('<'uii(I scLCniiMit in front, llic velvety faseia ol' tliinl se2;n\(Mil ahliri'x iated on tlic sides ; thorax with indistinct stripes ; eyes nfniale tollellill'^ eaell oth'T \-ery sli<^htly 'Mi'i'jiii!' Wieil. — Tliinl seLrinenl ofalidonien willioiit yellow, eyes of male broadly eon- ti'inoiis \'l Vi. — rnuil of female iiarn)\v. Deep liliiisli-l)la<'k, xailelliim scarcely dif fereiit. the abdomen with dull or ob-olete lrian:j,-nlar tiiict, sometimes nearly oli-olete : third and f nirtli terior tibi;e ycHow. "NViniis soiiielimes with a distinct brown spot liirt'is. V.\. — Third >eLrmeiit without Cor with very minute) v(dvety markings, abihimen mostly >Iiinin!j;, second, Ihinl. and fourth se;j;nieuts with frinn'c r)f whit<' pile !-'• — Third sc;i;nient of .ibdomen with an anterior sjiot, iind a posterior interrupted vcdvety black fascia, second se;:;meMt with sub-ob^ohMe triaii:i:ular ycdlow sjiols, ]iosterior border of segments narrow or in- distinct ; basal half of all the tibia' yellowish-wliilf. Wind's pure h valine iliiiiiiliiifxs. 14. — Second seument of abdoiiKMi with yellow triani:les, and a posterior uninterrupted or subinierrupted vcdvety cn)^s-band, posterior mar- gin of spuinents '^-4 3'ellowisli-white, with a friiiLre of pale uolden yel- h)W hairs. (Lenu'th !)-!:> mm.) x//j>:ifor. — Second se'.5inent except tlie metallic side spots that extend the whole lenjjth of the segment, \(dvety black : tliinl segmi'iit with a V(dvety triangle in tVont, the fourth with similar, but very small : the yellow- ish-white hind bonh'i-s fringed less consiiicuously with light colored ]iile fl/i>ii,<(V'(//.y ///(»///./^/.<( Lw., Centnr. vi, (i8. licd Iliver. Diagnosis, translation. •,. • "Sub-brassy bi,.ck, shining, clothed with rather long lutescenl pile ('imbe'); front broad, near the eyes black l»ilose. but tlie vertex itself with luleous jiile ; eyes pilose ; antenna' red- dish ferruginous, the first two joints black, the aristii pihise -, face, except the usual Htrijies yellow, with diliitely bitesceiit pih' and pollen : siaitel- fw Williston.] 320 [May Ifi, I lii'.u wlioll}^ Icstaccous ; cacli scjrnicnt, of tho abdomen except, the first with a lilaek posterior fascia, sccoikI ami tliifd emai-giiiate ami velutinoiis, the tbllowiii'j; suh-sliiiiiii!; ami in the i)()steri()r m.iruiii, very narrowly yellow. Feel lilaek, extreme apex of the femora, the basal half of ante- rior ami posterior tibia', the midtlle til)i;e except the apical third and tlie first Joint of the niiddk; tarsi, pallid yellowish ; ' ahe hyalina', vena disci colore snbfnsco late circnmfusis.' " Long. corp. t)[ lin., Long. ill. 4jlin. /•Jri^f'il/.H iihai'iiri'f^ '\.\y., 1. c. '>T. lied IJivcr. Diagnosis, tran'^lation. " ,■. Urassy black shining, clothed ^vith rather lonji' e. antenna' reddisli fei-rnginons, lirst two joints black, -arista pilose, face except the usual stripes yellow t(!stace'>us, white pollinose and white- pilose ; scutellnm brown, black near the base ; each abdominal segment except tlie first with a postorim' black fasein, not emarginatc ami with a very slender posterior yellow margin ; feet black, apex and baseof;ill the femora, tlie iiasal third of anterior and posterior tibi.'C, intermediate til)ia' except the ai)ex, and tin; first two joints of all the tarsi pallid yellowish ; wings pure hyaline, veins of the disc clomled with fuscous. Long. corp. o-.li lin., long, al., 1;',— IH lin. EuTST.\T,is T,ATiri!ONS Lw., 1. c. ()."). Matamoras, Texas, Towa. Diagnosis, translation. "c5''V- Black, moderately shining, wholly pal- lidly pilose ; antenn.-e fuscous, seta' bare, Inteous ; scutellum testace(nis ; second segment of the abdonien with two sub-triangnhir testaceous spots, posterior margin iiallid, posterior margins of the following segments pal- lid, 'in front pallidly pollinose; feet black, the knees, tibia>, except the apex, and the base of the intermediate tarsi, pallid fiavescent ; eyes of the male contiguous, in tlie female by the front broadly separated. Long. corp. r^!^^-:)}, lin., long. al. 1,1-1^ liti. EriftiiJlK Ktrirt'px Lw., 1. c. ()i. While :Mts., Canada. Diagnosis, translation. " ■'\ Black, shining; head wholly concolorons, antenna' obscurely rufous, arista bare; sciitcllum and two spots of tin.' second abdonunal segment brown ; posterior margin of tin; second, third, and fourth abdominal segments pallid yellow : win'i's hyaline, costa ex- cept the apical third fuscous-clouded. Long. corp. 1;',-!,'V lin., long ul. ;!;; lin." h'rin/,ilif( iiilosuf Lw., 1. c. TO. Oreenland. Dianiiosis, translation. "o'"' + - Black, thickly clothed witli long yellow l)ile ; eyes black pilose; antenna' black, arista bare: face black ; thorax unieolovous, opaque; scutcllum lutcoiis; lirst two alidomiiial segments opaque, secured on each side with a dilutely lutesceiit s|)ot ; third segment black, 'vith two opa([ini spots, confiuenl in an abbreviated fascia ; two ul- timate segments lirassy [luetallic]. blacl-;, shining, with a minute triangu- lar spot, opacpie ; pile of llie (hu'sum lupiiious, on the sides of tlie middle 1S82.] 321 rWilliston. hlark, rcniaiiulor yollow ; wincjs puro Iiyalinc, veins fuscous lilack, in tlic IVniale willi blackish spots. — Lon,!^. corp. ')h-^')\ liii., lonp;. al. 4.',-.")^ lin." ErinlaliH (vstrifor/nis Walker, List, etc., iii, ~u'-> (S//rphuK). Hudson's Bay Territory, "Mas. Nijrer, thoracis pilis anticis nigris pootecis fulvis, seutello fulvo, abdomine jtilis albis nigrls fulvisquo fasciato, anteunis piceis, pcdibus nij^ris, nlis limpidis fusco unimaeulatis. " Body black ; head clothed with dull tawny hairs, shining and promi- nent in front ; mouth pitchy ; feelers pitchy ; bristle ferruginous, downy; eyes pitchy, each with abroad stripe of short black hairs ; all the facets very small ; chest clot lied with short black hairs, and or. the hinder part with pale tawny hairs ; scutcheon tawn}', very thicklj' clothed with pale tawny hairs ; abdomen nearly :)val, broader and a little longer than the chest, cldtliecl with white hairs at the base, with black hairs in the middle, and witli liright tawny hairs towards the tip; legs black, clothed with short black hair; knees pitchy ; shanks and feet clothed beneath with tawny down : bind Hu't tawny; claws and foot cushions tawny; tips of cltiws black ; wings colorless ; largo dtirk brown spot in the disk ; wing ribs pitchy ; veins black, ferruginous towards the base and along the free 1)orders ; poisers ferruginous. Lengtii of the body 7 lines ; of the wings [spread] 14 lines." Erltitalis iiUiiri'pH ^.^lacci., Dipt. E.Kot. ii, 2, .lO, 41, Carolina. " Ater. Thorace antice duabus fasciis transversus albidis. Abdominis primo, secunilo terliofiue segmentis maculis lateralibus llavis. Facie fron- ti(pie albis. Long. 4 1. n'-" "Face testacie.- a duvet blancet bande nue, luisaute. Partic anterieuro du fnuil a duvet et polls blancs. Antennes testacoes. Yeux nus. Thorax d'uu noir velonte ; la seconde bande transversale sur la suture ; ecusson fauv(^ Abdomen, les taches laterales laissant un espace droit entn'dles ; celles du troisieine segment n'atteignant jias le sord posterieur ; incisions jaunes ; quatrieme a pelits jioils noire. Cuisses noires, a gcnou.v fauves ; jauibes jaunes, a extremile l)raun( ; tarses noirs. J^alanciers jaunes. Ailes hyalines ; a base un j)eu jaunatre ; cellule basilaire externe s'etendant jus- (|u'a la moitie de la discoidale." Eiixtiiliti ihirrim Rigot, Dipt. Xouv. xxi, Annal Eiit. So<'. Fr., 1^*78, 2\(>. Diagnosis, translation. f<\ Fiyes jiilose, arista at the base brielly pilose (similar to E, (irliiinforum) ; antenna' reddish-brown ; face black, on the sides obscurely cinereous pilose: thorax black, densely fulvous i)ilose ; SiMitellum fulvous; tegnhe testaceous ; abdomen, second segment, on each side, with a broad spot, triangular, fulvous, third with similar, but nar- rower, spots, narrowly margined with yellow ; femoi'a obscurely reddish- brown, knees and tibia' pallid testaceous ; apex broadly reddish-l)rown, tarsi obscurely red, ajtrx slightly infuscate; wings nearly hyaline, bas(! and external border, dilutely and very pallidly inl'usrated. Long. Ilhniu. North .\nu^rica. Williston.] 322 f^f!ly n». Kkistai.isi KN.w (f, in III'). >Iciu-. .\ tliintic MudMidrllc Stiitcs, \N';i>hii).iittnhnlii>a of this s])('ci('s is rfin;iri dorsum of thelhon»\ is l»lai-k pilose the yellowish pile of thealidoinen is eon lined I o the terminal seuinents. I have eoUeeted large numbers o^ jhn-ijux in Conneelieut, and among lliem I have found ti/pii'/il speeiiuens (,f iinhnu»as ! New Mexico, California. EiiisTAi.is Miurrs I.w., Cent, vi, (iCi ; O. S. West. Dipt., li:!"). Wash. Terr., Oregon, California, Colorado ! .V very common species, over thirty specinu-'us are in my collection. Tiiey show a considerable variation as observed by Oslen Sacken (1. c.). EiiisTAi.is (•'.) Mkiokmi \Vie(l., Aus. Zwui. Ins. ii, ITT, :>•"), pi. x., fig. IT). (]■:. iiinlroi'hmi). S.), Brazil (Wii'd.) New England '. Utah, Alaska (see (). Sacken. West. Dipt, :V.V,). This species agrees so closely with Wied- luan's figure and description of Mrii/aiii from ]>ra/.il, that I t)eliev(! it to be the same. I shall, however, send specimens for c(Uuparisou with South American ones. EUISTAI.IS MONTA" I S, Sp. IIOV. ^\_].;y,.s thickly pilose, sub-contiguous : front and face reddish-black •\vith yellow lule, the facial stripe and cheeks bliu'k, shining, antenme brownish-black, arista bare. Thorax black, densely covered with yellow ])ile, the -cutellnm yellow. .VlMlomen reddish-yellow, with thick reddislr yellow pile, lirst segment lilaek ; --eeoud segmeiil In the middle op. [Uc; black, narroweil behinil, in the third seguieni the black is contiued lo a. broad nu'(lian stripe, opacjut! in front, shining behind ; fourth segment similar, wholly shining, hypopygium black. J/cgs black willi black i)ile, all tb'- lil)ia' at the base yellowish-red. Wings hyaline with a brown spot. Eong. corp. I'J mm. One specimen. Wyoming Territory. Elllf^TAI.IS ()( (IDKNrAI.ls, S|). nov. J^9, — Eyes ]^ilosc, front ( , ) brownish black, dusted M'ith yellow on the skies, face on the sides thickly covereil wiih sanu' colored ilusl. and \\ 1SS2.] 32:j [^ViIlist^ll. ^v]lilisll yellow pile, mcnt on the sides with smiillcr reddish spots, extcndin,^' onc-lmlf or two-thirds of the way buck, and a broad, shininLr cross-band narrowly inlerrupled in the middle ; 1'oiirth ReirnK'nt sliiiun?^, with a small opiupie spot in front. Leiis bbick with black pile, knees and l)asal third of all the tibia' yellow. \\'in,ij;s hy;iline Avith a small d;irk brown s[)()t. J.ong. corp. 10-12 mm. Four specimens. Washington Territory. Eristalh Ilronsii, sp. nov. Q. — Eyes with short whitish jiile ; front brownish-black in the middle, tliickly covered with red dust oti tin." sides, ])ile below yellowish, black near the octdli, face with whitish i)ile and yellowish wliite dust, narrowly- shining' black in the middle, cheeks black, shininu; ; antenna' bi'ownish- black, arista brownish-yellow, sparsely pilose. Thorax on the dorsum brownish-olivaceous, somewhat lirassy on tlie sides ; in the middle form- ing two rather broad stripes, inclo>ing a narrow black stripe that is broadest beyoml the suture ; ph'ura' black with longer whitish i>ili', thi' pile of the dorstim rather short reddish-yellow ; scutcllum reddish-brown. Abdomen black, sub-metallic shining, with very short whitish pile, jxis- terior margins of second, third and foiirlh segments broadly whitish-yel- low, the velvety black occupies the whole of the nnddle of the second segment, expanding nari'owly out ward in front of the whitish posterior margin ; third scLi-ment has the velvety black confined to a ti'ianglc on the anterior part, extending narrowly backw;ird ; fourth segment with a small sjiot in front. Ia^s^^ l)lack with while pile, tips of femora and basal third of all the tibia^ yellow. Wings byaline with an indistinct brownish sjiot. Long. corp. 10 12 mm. Thretf specimens. Massachusetts, July ;!. For some time I w;is inclined to consider this the female of what I identify as A'. Jfcii/i nii Wied. VV. — Wings covered with minute pile, brown on anterior portion: thorax often with yellow spots Pteioptila, Pti-.i!()1'T1la. cki(1(4i;u.\ CW'ied.), Alls. Zwci. ii, 10"), '. (iecu-gia! Florida, Texas, Central America. JJ.- Sm\ll cross-vein at or beyond the middle of discal cell. M. — Arisi.i dorsal. /?. — Third longitudinal \cii; ^\^ ejily sinuous. yy. — .Marginal c( !1 open ; pc-lerior fi'm(H'a sw(dlen. I'ltOC. AMI'.lt. I'lm.OS. SOC. \X. ll'J. 2o. I'lilNTI.l) AlCt'sT S, ISS.V rt AVilliston.] '^^4 [May 10, "W. — Favo cnrinato seo XIII. ■WW. — Face tubuiciilivte, or i-ouikUhI, not fariiiato. X. — Facf! of male less tulx-rciilalc llian in female, l)0(ly uniformly blade, williout markinLrs. Y. — Hind tibiiu of male witli a strong projecting s])ine in nruldlo. Teiichocnemis. YY. — TTind tibiic of male without such spine "Pterallastes. XX. — Face alike in botli sexes, abdomen in male at least (except Mdllota) not uniform. Z. — Hind coxa' with spur, duller in the female, hind femora with tri- angular protuberance, hind til)ia' with terminal spur (r{' abdomen mostly red, .; nearly black) Polydonta. r(/iA'i)oxTA cuKVirK.s (Wicd.), Ans. Zwei. ii, 140, !}. (). S. West. Dipt., '.V.]H. New England ! California. The probability is that the species somewhat doubtfully referred to this by Osten Sacken, 1, c, is the same. ZZ. — Hind legs without such spiirs or protuberances. a. — Third joint of antenme broad, face ('oncave l)elc,w the anten- na' (thorax not vittatc, thickly pi'ose) abdomen without biinds Mallota. MaTjIjOTA S.xfKKNi, s]). nov. MaUiitii posfir/itti O. Sacken, West. Dipt., ;5:)8. J^. Ditl'ers from .V. (V) poxtieatu of the Eastern States in a dark brown spot on the wing, in the marginal cell being closed in ihe bt)rder, and in the eyes of the male not being contiguous, otherwise quite like the Eastern species. Frontal triangle and face gray with yellow pile, broad facial stripe and cheeks deep black, shining; antennte i)lack, third joint more or less brownish. Dorsum of thorax and pleura* with long dense yellow pile, scutellum yellow, similarly pilose, abdomen deej) shining black, nearly bare, legs deep black, with black pile, middle and posterior tarsi brownish- red, iiostericr femora very much thickened. Wings hyaline with a large brown spot, reaching from the origin of the third vein to the small cross- vein, the second longitudiiml enters the costa at tip of the tlrst, not at some distance beyond, as in the specimens T h;ive of the Eastern species. Long. corj). 14nim. Washington Territory. Two specimens. aa. — Third joint of antenna' ovate, face excavated or not below the an- tenna', thorax, or at least abdomen, witinnarkings Helophilus. Ili^r.oi'iiii.r.s LATiKKoxs Lw., Cent, iv, 7:5. Wyo. ! Northern States, Nebraska, California. IIi;r,()i'urr,ts mi-.xicamjs yh\cq. (][. poli/f/niiiinuis Lw. Cent. x. 55. See also O. Sacken, Catalogue, Errata.) Apparently a A'ery common species. 1 have .seventeen specimens from Washington Territory and California. Helophilus, sp. A small species from AVyoming, apparently undc- .scrib(!d. issj.l tWilHstoii. XII. JJ.— Sriiiill cross-vi.'iii ul or beyond the middle of discul cell. (i_. — Aristii dorsal. Third lonjiitudinal vein gently curved. 8. — Arista leathery plumose. z, — Marginal cell ojien. b.— Tliickly ]iilose : alidomen withou.t bands, sliort. thick, arched ; liind femora stroniilv thickened, tibi;e mueli bent ; face siraiLdil, cxicnd- ing back under the eyes, conical, iiointed ; wings with a brown spot ' "Arctophila. *AiU'T()[>iin,A KLAGUANs (). S., West. Dipt., %\r>. Colorado ^lountains. bb.— licss i)i!os(! : abdomen with bands : hind femora slender ; face trun- (..,(,. Sericomyia. Skiucomvia CMAr.coPYGA Lw., Cent, iii, '.30. Washington Territory, Mt. Hood, Oregon! Sitka. A dozen siiecimcn from the two former lo- calities, I have no doubt belong here ; the male not described by I.oew, dillers in having tho third segment wholly opaque. XIII. J J. — Small cros.s-A'cin at or beyond the middle of disciil cell. a. — Arista dorsal. ^5^J_ — Third longitudinal vein gently curved. "cr. — Arista bare or pubescent. c._:\r;u-ninal cell closed ; tlumix with yellow markings; abdomen fasci- ale ; antimnie short Milesia. cc. — ^larginal cell oi)cn. d.— Lonsi', slender, abdomen narrower toward Ibeba'^e ('wiuL^smore or less brownish) Ocyptamus (I'.aelia). dd. — Abdomen never linc;ir nr elub-sbaitcd. e. — Face distinctly carinate, convex or nearly perpeiidictdar in profile, hyperstoma not itroduced. eye> bare, hind b'lnora incrassatc, with a triangular protuberance Tropidia. TuomnrA (jtrADU.VTA (Sayl. Compl. Wr. 1, 1 i {Xnlohi). Wabliington Terr., California, New England ! -Face withoitt a dis'inct median ridge, or carina, or if somewhat cai'inated. the byiierstoma produeed. f, — "All th(! feni'ora strongly thickened and spino-e lielow ; tarsi crassale. Face luberculate ; anteniiie short, tliiid joint as bing as two preceiling. Small cross-vein subnormal : first posterior cell acute at outer anterior angl(>, rounded on otiirr posteri(U' part, the section of vein at distal end ot cell, sinuate. ISody ]iroportionatelv short and broad, bare, with minute scpianne." T,oe\v, Century v, ;1H. Small species *Lepidomyia. ff. — All the femora not" strongly thickened ami ^pinose below. Mostly large species. g. — Ncarlv bare siieeies, esp'-eiiiHy on the abdomen, the pile never long mn- dense ; eyes btire. ee. ■Hlllli w AVillistcnorjfister Comfftoel:!, sp. nov. (^■. — Head Li'lobular, large, composed almost wholly of the eyes Avliicli meet in front for a short distance above the antenna', the vertical trianj^lo narrow, lonir: ii small i)ut very distinct area of enlarged facets on each side above the anteniiie. Frontal triangle and face small, the latter arched, siibcariiiale, sjiort, eoneav(! from aiitenme to tip, yellow with sil- very glisten, and a browiiisli median strijie. Cheeks narrow, antenna' reddish-yellow, lirst joint veiy short, second nearly ecpiilaterally triangu- lar, third joint oval, arista bare. Tliora.v black, with ."our narrow, but conspiciH)Us olivaceous stripes, ihi' outer p;iir extending from the more reddish, somewhat swollen humeri. I'leura' black, with a conspicuous broad white-dusted vertical patch; scutellum black, yellow at the tip; abdomen browtiish-black ; first segment as broad as thorax, nearh' black, yellow on the sides ; second segment elongate, scarcely half as wide be- hind, with two silvery ■ longate spots; third segment of the same length, narrow, cylindrical, yellow in front ; fourth segment as long as preceding, wi'h the globular hypopygium forming a spheroidal mass. Legs yellow, hind femora much swollen, arena ed, black, becoming red at the tip, l>e- low at the end with slender process, and bej-ond a smaller tooth-like one, hinil tibia> arcuated with a triangular projection at the end, hind tarsi brownish, wings nearly hyaline, third longitudinal via gently curved. Long. Corp. VI mm., long. al. 8 mm., X. Y., Corr.ell I'lnversity. I'rof. J, ir. Comstock. The present species is a very interesting addition to our fauna. Hitherto, so far as I can learn, but one species is known, »S'. cr.'.vulrscenti ^lae., 1. c. and Dipt. E.xot. 11, -2, 72, Tab, 1:5, f. ;5, from Guiana, South Ameriiia. I lake much pleasure in dediciting it lo Prof. Comstock, whose work in Ihilomology is so favorably known. ii. — Hind fei.uu'a more or less swollen with spines or bristles below, abdo- men elongated, somewhat llatteiUMl, not contracted in the middle, '^riiorax wilho\it distinct yellow markings. j. — Hind femora very much swollen; small cross-vein at right .nnirles to longitudinal veins Syritta. SviiiTTA I'li'ii.Ns Unne, ^rcigen Zwrhl. Ins. iii, ^K!. Europe. Com- mon apparently over all of North America. jj. — Hind femora never remarkably swolhin, hind coxa' often with a spinous process, small cross vein of wing always oblinue.. .Xylota. XviiOT.v oiisciitA Lw., Cent, vi, .'i."). ;Mt. Hood, Oregon ; Wash. Terr. Calif. ! lied Kiver of the Xorih. Specimens from the former locali'''s w 1SSJ.J '*-'^ [Willislon. {liirce so closely with Locw's (Icscription thai I helicvc thciii to he llio SiUUO. Xylota K.uNrii.A Say. Compl. AVr. 1, lo ; PI. S, fi.ir. 4. Wash. Terr., ("alii'. : New Euglaiul. Xumerous specimens from the-e loealilies re- semble so closely the Eastern ones, that I scarcely doiiht their identity. The thinl. joint oV the larsi varies from, yellowish to (luite black, ant^he spine or lub.'rcle of the hind coxa; is ipiitc disiinct ; Ihe antenna' vary somewhat is color. U X. '/umlri.in'n-uJ>'t:t Lw. really a dislinc species V Observe the discrepancy between the diagnosis and description as regards tlu^ male coxa'. Xvi,oTA nouA CFab.) :S[eigen. Oregon, Wash. Terr., Calif. '. Europe and North America. Common. Xvi.oTA, sp. no\. Colorado. Dillers irom .s'. hirohir Lw. in the presence of long coxal spines; in all the tarsi cvceot the last two joints, the anterior and middle tibia', and the posterior libiic at base and tips being yellowish-red. hh.— Face descendinir more or less below the eyes, often ol)tuseIy tnbercn- late Thorax either with distinct spots or abdomen banded. k_The sixth vein bevond the jniiclion of the posterior basal cross- vein, extends fofwar.ls snbparailel lo the border, the discal cell rounded on its posterior angle, hind lemora swollen (and wUh a triangular iirotnberance below on outer part; anterior parr ot winii's more or less clouded). l_Secwnd joint of antenna', elongate; anlenna' about as Ion- as liead . . . '. Mixtemyia. 11 —Second joint of antenna' not elongated, the antenna' shorter than luad ..'. fipilomyia. Sl'IT.OMVIA INTKKRII'TA, Sp. noV. ,^^ (J. —Very closely allicnl to X loi}fiiriin sliorl face much produced directlv downwards, obtu-ely lubereu- lale, antenna' shorter or !„!iia brerimn.i, (). S., hut ditlers in the antenna! bein- still shorter, and the picture of the abdomen diderent. °'™"~iU,"'h!,'"' ^''"'■•';.^""i^f'''^ "'>^^- «-'b n^'iu- the middle of head in pro- gg.-Lar-er pilose species, the ab,lo;n(M;\;iwaVs with VhrntT^TrZ^ Jlm^um ot thorax never wiih yellow «ulrkin-s other than on the n.-Scu_tellum, mar-in and [tleura of thorax with bristlv hairs- face disnncily tubcr.-ulate ; feuK.ra slender ; abdomen ■uniforn'i me-' '""''•' "'" '"'"''^''1 = . .Chrysochlainys. The following table of the Xorth American si,ecies I reproduce from Osten Sacken (West. Dipt., :540j, without chan-e : Arista black , . , , . rrn'siin. Arista reddish. Le- entirely reddisli yellow " 7-., Anterior femora at base and lips of all the larsi blackV.V.'wr,'/^' All the femora brown ; tibia' likewise infuscalcd niuripes. Cniivsonu.AMYs cuoKsrs (). Sacken. West. Dipt., :U1. Washin-ton Terr., t'ahfornia I Utah. '"' nn-— Thorax without any bristly hairs. o.— Face short, not produ.'ed, exiendin- but verv little below the eyes, shorter than the front, concave fnnn antenna' to tip, m.t tubereulate, transversely arched, hind fe,n<.ra more or less thickened. p.-Abdomen cK.n-ate, hind femora with short spinous liristles behnv -1-. 1 BracliypalpuB. t is»;'j.] 329 [WilliMoii. BitACiiYrAUTs iMi.ciiEK "Wlstn. ('.in. Entomoloirist. vol. .\iv, p. 7S. Oreg'uu, Vasliinirton Terr. Readily reco ., ( '■•ci/dtiof/itxtfr Lw. I have m;vor seen a specimen oi eninioiiin^ti'r ; it is pirobalily distinct from ryincUd, althnuuii the description api)lii's (piito well to my female ejiliii(l. Wiii-s >\illi liiiiwii clotids aioiii;- tliu vein and ii very dark spot near Uh.! tip of \iiiary, tiic inner portion ut the cells hyaline. Lon.i;. Corp. 15-10 mm. an pp i>hin ;t(in Ttrritorv, — Fm< »t evenly eoncavc, tnlicrcnhile ; hind femora slender. Fae(! produced downwards and forwanl>, prolioscis Ion;" ; eyes of male well separated, abdomen uniformly lilaek, short, liroad Eiirhinamallota i>i^. liul. Soe. Knt. Fr. Apr. ISS-,;, Xo. (>, ]^. IS, llntc/t/jtu/jia \Villi.-^lon, Can. Kntomolo-i^t, Vol. .\iv, p. Tii, May, 18S2. KiKniN\-\rAi. I.OTA i.ri'iNA, AVNin., 1. c. Caiifoniia. EiitiiiNA.MAi.i.orA MoKii'i:,'* AVlstn., 1. e. Northern and Souther;i Cali- fornia. T know thi< sjjecics only in the female; sliou'd the males e\es ho found to lie eontiL:uou> in front of the oeellar tuliercle, I kmiw of no other character to separate it from Eriv]>li'>rii, j'hilli[)i Ver. Zool. J5ot. <;cscils;. Wien., L'l, T:;.'), isti."), pi. -Jii, H;;-. :>(!. qo — Face produced directly downward, more or less arched or tul)ercu- lati' in the lower i>ari. 1-. — Kves of male separated hy the oeellar tuhercle. Antennal promi- 1, alidomen with :i— I i»airs of larucoxal, o!ili(Hie decora. iience verv conica rr. ^Evi Tahle ^ a. — Al)di h.— Thre c. — Secon mai'iii vcUov Soniul le ocelli ; ante Criorrhii hitu ■lor leri -.Srcond se^rm.nt with an intt^rrujiled cross-liaml, third and fourth with entire cros-. liand, attenuated in the nuddle iieliinil and on the sides. . scitula, sp. nov. CnioiiiniiNA ntiMKUAt.is, sp. no\ .— F ;ice vein )w, shiniii'j,' with a senn-translueencv ; cheeks lilac front in female on U]iper half, lilack : whitish pollinose on the sides helow the vertex, frontal triangle in male like the i'-dw ; autciune yellow, some- what infuscated on the first two joints and on upper |)art of third : thorax hlaek, with shm't thin yellow pih; : sculellum hlack, the edo-e luteou.s ; aiulomen lilaek w It h reeumhent, n<>l alumdant yellow i>ile ; second se.i ment with trian'iular yellow spots, in the female the third and fourth, ts on the anterior marsiins. liftli mostlv vidlow^ with rectau'iular vellow spo except a narrow m edian line and the ti| 1 ; Ic'jcs \ello w , front and middl and a rinn' on ili>.tal (lart of ]>ostcrior femora, jjosterior tihi.i' in middle JSSJ.] 331 Willisloii. '0 posterior mclalarsi. and three last Joints oT ail tin- tarsi lirown : wjiiiis hyaline. Lonj,-. cori). 10-11 nun. Two s[ie(iniens. Wasliinirlon Terri tory. I siis|iecl tli.it the male may also show in some decree the aliihMnin.il iM:irKin^s oilier tiian tlie spots on seeond s("j,nient, ami that the coloration of the IciTs ina\ he \ariahle. riiioitmriN A S( iTLLA, SI), nov. r-y I . Face yellow, in profih^ uitli a well marked ohtnse tnhercle ; cheeks hlaok ; front in female hiack on ujiper three-toiirths, uith liiayish red (lull and short hlack pile : frontal triaiiiilo in male yellow ; eyes coii- tiuiious for a lon;rer ilistance than in cmiUs, tlie anteniial proUiherance not so Lrreat. Antenna' ycdlouish hrow n or hlackish-hrown, the seeond joint sometimes yellow w ith hlack ahove, third Joint always of a liiiliter color helow ; thorax hlack, shininL', dorsum w itli hlackish i>ile, yellowish on the borders ; luimeri yellow with smaller confluent yellow pleural sjiots ; mesopleuni' 'jjray pilose and pollinoso ; seutellum hlack, the ed'.:(' sometimes narrowly luteoiis ; ahdomen hlaek ; second seunicnt w ith two larii'e yellow- spots rather narrowly separated, uitli rounded heads and narrowed toward the margins ; third seuinent w ith a yellow cross-hand on the anterior mamin. douhly convex heliind, the greatest convexitv heimj; toward the middle, Avith sharp median aniiular incision, and attenuated nearly to a jioint on the sides of the ahdomen ; fourth seu-ment similar in female, in male wholly hlaek or with trianuular spots on anterior margin and reddish hehind ; hypoi)yirium red or yellow . Anterior coxa' white l)ollinose in front, femora hlaek except the extreme tii)s, anterior and middle tihia' and metatarsi, yellow or reddish yellow ; posterior tihia' yellow iit the hase and tip ; termiiuil Joints of antericu- and ndddle larsi hlaek ; posterior tarsi fuseous or hlack ; winils nearly hyaline, rather more clouded toward the front. Lonii'. eorp. 11-1 15 mm. Kiiiht speeiniens. Wa.shin,u;ton Teiritory, Orejion. This species has the face in iirolile similar to that of MiUmi notata Wied. ("(Jenus novum" O. S. C'atalo::. p. i;!S) as liLiured hy ,Mac- nuiirt. XIV. JJ. — Small cross-vein lieyond the middle of diseal cell, oldique. an- — -Vntenna' with a sulitermiual iiristle or terminal style. B. — Third Joint of antenn.-e jiroduced ahove into a lonu' conical proc(!ss, incliiu'd forward aiul terniinatinjji: in the thickened arista : ahdomen oval hlack, with three iiiterrupted nu;tallic cross-hands; third lon,i;'i- tudinal-vein straight Merapioidiis Tdgot. , 'Mera])ioidus villosus IJiu'ot., Hul. Soc. l"nt. Fr. IS?,), p. (i-t. (ieorgia ' 8S. — Antenna' longer than the head, second and third Joints swollen, tcrmiiin'ing in a short thickened style ; third longitudinid vein strongly angulated, eijiitling a stum]) of a \'ein into the first posterior eel 1 Ceria. I'Koi'. .\mi;k. [Miii.os. soc. x\. 112. 'Iw i'ur>;'n:i) avoist 14, isiS'.'. '-'''- l.liincli:, Ttililf of sjH'fips : a. — AiitciiiKil pnijcitiuir of the IV(nil \cr\ slioil ; (iist Jniiii <>| aniiiiiKi' ni'iirly as Ioiil; as '.asl two to'icihci' * xi-jnij) m. — Antciiiial projection iR'.irly a> Inni? as (irsi Joint oC antenna', \\n' latter scarcely loii'j.er tli;ui the >eeonil joint. b. — Second, third an! I'oiirlh si.iiinenis ol' alidmnen each '.\ ith Iwd* yellow spots and posliiior inarLCin * pktuhi. — Ahdonien without such spots, handed. c. — Second se,niuent of alidoincn much -horli-r than the third ; front of fiinalc hlack with yellow spots tihhrccidtK. — Second se^mi-nl of alidonien nearlj' as lonii' as third ; front of female yellow h(dow, lilaek ahove fritlois. Cei!IA 'rKii>i:.Ns I. w., Cent, x, ."iT. Loew's de.scrii)lion .ipplies very ■well to a siniile n>ale ^pei inuii from Southern I'alifc.rnia, except that the cheeks are wholly lilack, and the hind taisi yellow at the base. Other Bpeciniens from ^Vashin,irton Territory, however, that, are apparently of the same spei'ies, have the anterior ami miildle femora hlack, except the extreme tips, the posterior hlack, except ut the i»use, the tihia' fuscous near the outer ends, one of the phMiral spots and the su[>ra-alar vittula entirely wantinj;-. The female differs in tin- front \H''\n<^ l)lack on the upper two thirds ; the seeoiul and third sejxments of the ahdomen stronijcly marked with whitish pollen, and the le.i;s almost wholly ycdlow, the anterior femora being blackish in front, the posterior liglitly fuscous near the til). \ i\'niii](.' ithbnii'dtn taken with a male at New Ihnen, has it.s h'gs yellow also with fuscous markings of the femora ; the front ia Idack wUh four small yellow spots. ,'<[ated Mectiwj, June 10, 1SS.2. Prcsoitt, 4 iiuMitl)ci-.s. Pre.sidoiit, INfr. I''rai,i;v, iu the Cli;iii'. A li.'ttcr ;icce|ilii],u' uiciiihofsliip \v;i.- !'(>ceivt'(l fioiii ('. K. IJawliiis, dated lioi-kinouiit, Riiinliill, JMiLihiiid, May I'J, 1882. Mr. ]'. n. Law accepted liis apiiuiiitiiiciit to prepafe an ol/iluafv notice of the late Mf. Vaux, \)\ letter dated May 2o, 1882. A reipiest for exchanges (t>) be datc(l luick at h.'a.st to 1875) \vas receiv(.Ml from tlie Societe Z()()j(>oi(|iio ile Frtince, No. 7' Rue des Uraiids Aii^unstins, J'ari.s, in a letter dated May 27, and signed 11. rier.son, Sec. Adjt. On motion the Librarian was I .