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Mapa, platee, charts, etc., may be filmed at different rec^uction ratioa. Thoae too lerge to be entirely included in one exposure are filmed beginning in the upper left hand comer, left to right and top to bottom, aa many frames as required. The following diagrams illustrate the method: Lam cartoa, planches, tableeux, ate, peuvent atre filmii« i dee taux de rMuction diffirents. Lorsque le document est trop grand pour &rre reproduit en un seul clich*. il eat fiim^ i partir d'' Tangle supAriaur gauche, de gauche k droite, et do haut en baa. en prenant la nombra d'images nteeesaire. Lea diagrammes suivants illuatrant la m^thode. 1 2 3 1 2 3 4 5 6 c / L GEOLOGICAL SURVEY OF CANADA. SIR W. E. LOGAN, F.R.S., DIRECTOR. # CATALOGUES OF THE SILURIAN FOSSILS OF THE ISLAND OF ANTICOSTI, WITH DESCRIPTIONS OF SOME NEW GENERA AND SPECIES. By E. bill ings, F.G.S., PALyi';ojiTOj,(jC!PS'{,' ;G..' S. i'. ■. .', t • * •• • • • !• • • • iMONTREAL: DAWSON BROTHERS. LONDON, NEW YORK, AND PARIS: BAILLlftRE. NOVSMDER, 1866. y MONTREAL : PRINTED BY JOHN LOVELL, ST. NICHOLAS STREET. NOVKMBEK, 1800. • • • • . • • « Gat Oati Adc Gee Desi s CONTENTS. FACIK Catalogue of the Lower Silurian Fossils of Anticosti, with descriptions of some of the species, ^ Catalogue of the Fossils of the Anticosti Group, with descriptions of some of the species, 29 Additional species from the Hudson River Group, 72 General observations on the Palreozoic Fossils of Anticosti, '^''' Descriptions of New Species of Fossils from the Clinton and Niagara formations,.. 82 Cat NOTE. V. should have been stated on pugo 81 that the Levis I'ormation is now divided, the upper portion having been set apart under the designation of the Lauzon formation. The three species of fossils referred to the Sillery occur in the upper part of the Lauzon, near the base of the Sillery. In the fifth line from the top of pajre 81, for 3 read 5, T the 1 Poin cons amoi towa fossil near Tl abov are c logut In Nc intht perha H. pheri( ing ot in cor NOTI B. = ] J. Rich GEOLOGICAL SURVEY OF CANADA. Catalogue op the Lower Silurian Fossils op Anticosti, with Descriptions of some op the Species. The Lower Silurian rocks of Anticosti occupy the west end and all of the north side of the islarid except that portion which lies between Fox Point and the eastern extremity, — a distance of fourteen miles. They consist of pure and ari,nllaceous limestones interstratified with a sparing amount of shales, lying in nearly horizontal strata or with a gentle dip towards the south. Their thickness is estimated at about 950 feet,\nd their fossils show them to be of the age of the Hudson River formation, or very nearly so. The south side, the east end, and the fourteen miles of the north coast above mentioned as lying between Fox Point and the eastern extremity are occupied by rocks of the age of the Middle Silurian. A separate cata- logue of the fossils of this portion will be given next after the present one. In the Hudson River formation the following species have been collected. , PROTOZOA. No remains of Protozoa have been detected in the Lower Silurian, but in the next formation "bove several species have been collected which may perhaps belong to this divisioli. ZOOPHYTA. Genus Heliolites, Dana. H. APPiNis, B., Can. Nat; Geol. [2], vol. ii,p. 427. — Corallum hemis- pheric, globular, pyriform, olavato turbinate or tuberose, sometimes incrust- ing other fossils in a thin layer; cells usually circular, often sub-polygonal in contact with each other or barely separate, from half a-line to little less Note —Jbbreviations.—E. R. ■- Hudson River formation. A. G. = Anticosti group. B. = Billings. The names appended to tlie descriptions, such as T. C. Weston J. Richardson, &c., are those of the discoverers of the species. ' B 6 than one lino in diameter, the more common width being about two-thirds of ii lino, their margins thin, distinctly elevated above the general surface, and, in perfect spccimenti, creuulated or serrated with twelve small, rough, pointed tubercles. Septa rudimentary, rarely visible; but in certain condi- tions of preservation distinctly striating the inside of the cells and tubes below. The tabulae are usually horizontal, three or four in one line. Owing to the close arrangement of the tubes there is very little cojnenchyma, and this is vesicular. When the cells are closely crowded together they become more or less prismsitic with polygonal apertures, and it is then difficult to distinguish the specimens from certain species o{ Favositea. In general, however, they are circular although in contact or nearly so. Colonies are occasionally found with the cells distant about half their diameter. The sijocies to which this is most nearly related is H. tubulata (Lons- dale), common in the Weuloek limestone. That species, however, as described by McCoy, Edwards and Ilaime and others, has the cells in general somewhat smaller and the apertures not so strongly serrated. The crenulations on the margins of the cells are only visible when the surface is no: at all abraded. The least wearing removes them, and the apertures arc then simply circular or sub-polygonal. This species has been found at Wreck Point ; II. R. Also at White Cliff, Junction Cliff, Wall's Cove, South Point and other localities, in Divisions 1, 2 and 3, A.. 0. J. Richardson and T. C. Weston. Genus Favosites, Lamarck. F. I'ROLIFICUS, B., op. cit., p. 429. — Corallum forming largo hemispheric or irregularly convex masses. Tubes about one lino in diameter. Tabulre thin and either complete or imperfect, sometimes filling the tube Avith vesi- cular tissue. They are often very numerous, there being sometimes six or seven in one line. No septa or mural pores have yet been detected, and it may be that this species should be placed in another genus. Hudson River formation and throughout the Middle Silurian. J. Richardson and T. C. Weston.— (J?', prolificus, Billings,— loc. cit. F. GotMandica, pars, Geol. Can. p. 221, 222, 299, 301, 302, 303, 304, 306, 307.) F. OAPAX, n. sp. — Corallum forming large depressed hemispheric or irregular masses. Tubes, when full grown, about two lines in diameter ; a few of smaller size scattered among the larger. TabuljB thin, flat, hori- zontal, sometimes convex or concave and oblique ; about one line distant. Inner taces of the tubes obscurely striated longitudinally and wrinkled transversely. Pores small, situated in the angles of the tubes but none Avcre observed on the faces. This species, in the position of the pores, resembles F. alveolaris, Goldfuss, and also, F. aspera, D'Orbigny (Ed- H. Z. as wards ami Ilalmo Coralliares, v. iii, p. 2o2) but has smaller tubes. West end ; !I. R. J. Richardson. The above descript.on is founded on a s.r.glo spocirnon, a portion of a largo mass, anu further observations may render some modiScation neces- sary. ' Genus Stenopora, Lonsdale. _ Amonj? the fossils from Anticosti th^re is agroat variety of forms belong mg to this genus, In many instances it is impossible to decide whe ' or a particular form is new, or should be referred to some one of tiie numerous descnbeu species. I shall dispose of the most common as follows provision S. FIBROSA, Goldfuss. - Occurs throughout the Lower and Middle Silu nan rocks of Anticosti. S. MAMMULATA, D'Orbigny. — Wreck Point ; H. R. S_PAPILLATA, McCoy .-Licrusting an Orthoceras,^i English Head- S. EXPLANATA, McCoy. — Occurs at the west end ; fl. R. Genus Halysites, Fischer H. Catenulatus, Linnacus.--Occurs at the H. R. ' • And also at numerous localities through* Genus Petraia, Munster. ^ the island ; VI group. P. ANGULATA, B Pa!. Foss., vol. 1, p. 103._Occurs a. .. oton Point and at the west end of the island ; H. R. P. SELECTA, B., Can. Nat. Geol. [2], vol. ii, p. 429._Base acutely pointed; above, rather slender for the first few lines, then more rapidly enlarging. Depth of the cup about two-thirds of its width at the mar^ n septal stru« four or five in two lines. The plane of the margin of the ^up' IS in all the siH3c,mens I have seen, very oblique, always inclining towards the concave side. Length of largest specimen seen fifteen lines ; width of cup twelve lines. In general, the individuals are more slender. West end Lighthouse ; H. R. Also at Gamache Bay : Div. 1, A. G. Genus Zaphrentis, Rafinesque. Z. AFPiNis, B. op. cit., p. 430._Three orfourinches inlength, expand- ing to a diameter of eighteen lines at the height of three and half inches moderately curved, sometimes with strong irregular anni^lations. In a polished longitudinal section the tabuhe are seen to be thin, flexuous closely crowded together and extending pU across or nearly so. Th.- ,, arc about two septal strioD on the surface in one line, and thus, where the diani'-tcr r' \ n 8 is cij:;hteon lines, there must bo, at the margin, about one hundred septa. In part of a weather od cup some of tho 8e[)ta run along the ui)por surface of the tabuluj nearly to the centre. Thi.-) species is allied to Z. CanaJeiids, but differs in having the principal septa more developed, and in its more irregular growth. The cup has not been seen. It is possible that tliis and Z. Canadensu may belong to a different genus, perhaps to Omphyma. Wreck Point and White Cliff; H. R. Also at Gamache Bay; Div. 1, A. G. Z. BELLisTiiiATA, B., op. cit., p. 480.— Turbinate, gradually enlarging from an acutely pointed base, moderately and sometimes irregularly curved. Theio are about sixty septa where the diameter is one inch. Many of these, in the lower part, reach the centre, but above the height of two inches (as shown by a poUshed section of a specimen), the central area is filled with irregular tabuloe. The cup, in a specimen four inches in length, is eighteen lines in d.pth, conicai, or much narrowed towards the bottom. Surface, with five strong, rounded septal ridges in the width of three lines. On approaching the baso these a/e more -jlosely crowded together than they are in the higher and main body of the coral. They are crossed by fine engirdling strioe just visible to the naked eye. Length of the largest specimen observed four inches. Numerous small straight individuals troja one inch and upwards occur with the larger. Wreck Point ; H. R. Also, in numerous localities in Div. 1 and 2, A. G. Genus Beatiucea, Billings. B. N0DUL08A, B., Rep. 1857, p. -344. — Wreck Point, Salmon River, Battery Cliff, and other places in the upper part of the H. R. It also ocurs in Div. 1, A. G. B. UNDULATA, B., op cit., p. 344. — Macasty Bay and near the west- end light-house ; H. R. Also at Cape James, Table Head, Gamache Bay, and numerous other localities in Div. 1 and 2, A. G. It has been found in the upper part ^f the H. R. at Lake St. John on the Saguenay Rivor ; and in the same horizon on several of the Islands in Lake Huron. ECHINODERMATA. Genus Pleurocystitess, Billings. P. ANTicosTiENSis, B., Dec. iii, p. 52. — Charleton Point ; H. R. Genus Reteocrinus, Billings. R. FiMERiATDS, B., Dec. iv, p. ^b. — Charleton Point ; E. R. 9 Genua Caradocrinus, Billings. C. TULKRCULATUS, B., op. cit., p. 83.— Clmrlcton Point; H. R. Genus Dkndrocrinus, Hall. D. LATiBi ACiiiATUS, B., op. cit., p. 89.— Charloton Point; H. R. D. TENER, n. sp. — Cup small, sub-pentagonal ; arms very long, several times branched ; column slender pentagonal. Length of cup about 3 lines ; width of the name at the margin about 2.] lities; length cf the arms 19 lines ; diameter ;)f the column about half a line. The specimens are all imbedded in tt rock, and full details cannot, at present, be given. It occurs in several localities at the west end of the island; II. R. J. Richardson. Genus Palasterina, McCoy. P. RUGOsa, B., Dec. lii, p. :,'.— Charleton Point; II. R. POLYZOA. Genus Ptilodictya, Lonsdale. P. fhaoilis, n. sp. — Polyzoary consisting of narrow ligulate, two edged branching fronds with the cellular surfaces fantly and uniformly convex. Cells ovate, their length rather more than one-half greater than their width, surrounded with an obscurely elevated margin, seven or eight in the length of one line and ten or twelve in the same space in width. On each side there r.re two or three rows of oblique cells. Those which occupy the middle of the frond are arranged in straight longitudinal rows. There is a distinctly elevated line between each two rows The propor- tional length and width of the cells appears to be somewhat vo viable. The fronds, examined are from two-thirds to one hne in width. Occurs at Charleton Point; H. R. Also at Junction Cliif; Div. 1, A. G. J. Richardson. P. nitidula, n. sp. — Polyzoary consisting of narrow, thin, ligulate branching fronds, which are sharp-edged and very slightly convex on the sides. -Cells small, ovate, from se^en to eight in the length of one line and from ten to twelve in the same space in width, arranged in straight longitudinal rows, width of specimens about one line. This species differs from P. fragilis in not having the oblique cells at the edges of the frondd. Charleton Point and Salmon River ; H. R. J. Richardson. P. canadensis, n. sp.— Polyzoary a single elongated frond, gradually expanding in width from an acute point to six lines in a length of three and a-half inches. Cells oblong ovate, six or seven in the lenf^th of one ■< I t II >l 10 m line and about twelve in the same space in width ; arranged in both lond- tudinal and transverse rows, the latter sloping a little upwards from ne'ar the middh outwards to each of the edges. Charleton Point; H. R. J. Richardson. I have seen only one specimen of this species and from it the above description was drawn up. It resembles P. lanceolata in general form but seems to have smaller cells. P. GLADiOLA, n. sp.— Polyzoary, consisting of a single elongated, narrow, two-edged, unbranched frond, usually curved, gradually expanding from an acute point to a width of about one line in a length of from one to twenty-eight lines, moderately convex, often sub-angular along the middle and with flat slopes to the edges, which are acute. Cells oblong ; when perfect, nearly rectangular at their extremities ; when worn, one or both ends rounded ; their length about twice their width, six to eight in the length of one line, arranged in very regular longitudinal rows, of which there are about twelve where the width of the frond is one line. The largest frond seen is 28 lines in length and liin width at the larger extremity. Near the west end Light-house ; H. R. Also at numerous localities on the south side and east end of the island, in Divs. 1, 2, 3, A. G. J. Richardson. BRACHIOPODA.* Genus Lingula, Brugiere. L. QU.'^RATA, Eichwald. — Occurs at Charleton Point and English Head ; H. R. Also at Junction Cliff in Div. 1, A. G. Mr. Shaler has described this species under the name of L. eleyantula, and in this he may be right, but at present I think it not sufficiently different from the Russian species to deserve a new name. At all events it is the same form (occurring in the Trenton limestone) wuich we have always considered to be L. quadrata. L. Canadensis, B., Pal. Foss., vol. i, p. 114.— Black Point ; H. R. L. FoiiBESi, B., op. cit, p. 115. English Head; H. R. Also at Junction Cliff; Div. 1. A. G, I •jrenus EiciiwALDiA, Billings. E. Anticostiensis, n. an. — Shell larger than E. suhtrigonalis, but pro- portionally not so convex. Ventral valve ovate ; greatest width a little * Mr. N. S. Shaler bas descrioed a number of the spet.es of Brachio.,oda from Anticosti, in Bulletin No. 4, of the Museum of Comparative Zoology, Cambridge. As many of the names adopted by him are different from those in this work, I shall give a list of his species at the end of the catalogue of the fossils of the Anticosti group. 11 in front of the mid-length ; umbo narrowly rounded ; apical m^h about 90 ; front margin broadly rounded or gently convex ; sides, in the upper half, somewhat straight and uniformly converging from a little below the mid-length to the beak ; in the lower half uniformly rounded into the front margin. The beak is not visible in any of the specimens examined, but is incurved, at i>e least, nearly down to the plane of the margin! This valve is moderately and evenly convex, the outline on a side v'iew most strongly curved in the upper half. The cast of the interior shows a straight groove commencing at the beak and extending along the middle about half way to the front. This is caused by the mesial septum. The dorsal valve has not been recognized. Length of the best preserved speci- men 16 linos ; greatest width 18 lines. Near che west end Light-house ; H. R. J. Richardson. Genus Trematis, Sharpe. T. Ottawaensis, B., Pal. Foss. vol. i, p. 53.— Macasty Bay ; PL R. One specimen 12 lines wide, shows the foramen : it is a small notch on the ^ hinge scarcely a line in depth. This proves that this species is quite distinct from T. Huronensis in which the foramen extends nearly to the centre of the valve. Sharpe in describing T. cancellata, Sowerby, brought by Dr. Bigsby from Lake Simcoe, says " the fissure in the ventral valve is smalhmd close to the hinge." It may be therefore, and indeed it seems probable, that our species is identical with T. cancellata. Mr. Davidson has ex- pressed the same opinion in a letter lately received from him. It would however be imprudent to unite the two under one name without comparing specimens with the original. Genus Strophomena, Rafinesque. S. nitens,B. Can. Nat. Geol., vol. 5, p. 54.— Charleton Point, Macasty Bay, English Head, and many other localities ; H. R. S. Ceres, B. op. cit. p. 54.~Charleton Point; H. R. A species which is either identical or closely allied also occurs in the Anticosti group, and is widely distributed. S. FLUCTuosA, B. op. cit. p. 54.— Charleton Point and at various other localities ; II. R. Also in the Trenton limestone at the City of Ottawa. S. Hecuba, B. op. cit. p. 60.— -Numerous localities ; H. R. S. IMUREX, Pander.— Cape Robert ; H. R. S. sujiTENTA, Conrad.— English Head ; H. R. •S. Arethusa, B. Pal. Foss., vol. 1, p. 132.— Observation Cape ; H. R. 12 |i S. PLANUMBONA, Hall.— Charleton Point and at the west end of the island ; H. R. Also at Junction Cliff; Div. 1, A. G. S. ALTERNATA, Conrad.— A variety of this species occurs at several localities ; H. R. Also throughout the A. G. Genus Leptaena, Dalman. L. SERiCEA, Sowerby.— Abundant in the H. R. and also in Div 1 A. G. ' ' Genus Orthis, Dalman. 0. TESTUDiNARiA, Dalman.— A variety occurs at Marsdle Cliff; H. R. 0. 8UBQUADRATA, Hall.— Abundant at Charleton Point, and more rarely at English Head and the west end of the island ; H. R. 0. LYNX, Eichwald.— Charleton Point; H. R., rarely; abundant at Junction Cliff; Div. 1, A. G. 0. Maria, B., Pal. Foss., vol. i, p. 13T. Macasty Bay ; H. R. Also more abundantly at Gamache Bay ; Div. 1, A. G. 0. SOLA, n. sp.— Shell small, nearly circular ; width a little greater than the length ; sides and front uniformly rounded ; hinge line a little more than half the whole width ; both valves convex and without either fold or sinus. Ventral valve rather strongly convex, most tumid at about one- fourth the length from the beak ; scarcely at all compressed at the cardinal angles ; area forming an angle of about 100° with the place of the margin in the basal third of its height, and, in the other two-thirds, incurved so as to become parallel with that plane near the beak ; the latter minute and pointed; foramen scarcely as wide as it is high'; dorial valve uniformly convex ; greatest elevation a little above the centre ; ca^-dinal angles slightly compressed ; area two-thirds the height of that of the ventral valve, inclined at an angle of about 110'^ with the plane of the lateral margin ;' slightly concave ; beak small, pointed, incurved ; foramen filled with the divaricator process. Surface with fine acutely angular ribs, dividing sev- eral times between tho beak and the margin, about five in the width of one line. Length H lines ; width about five fines ; length of the hinge line 3 lines ; distance between the dorsal and ventral beaks § of a line ; depth of both valves 2i lines. Salmon River ; H. R. J. Richardson. Genus Rhynchonella, Fischer. R. CAPAX, Conrad. — Abundant at Charleton Point ; more rare at English Head, Macasty Bay, and other locaUties ; H. R. 13 R. Anticostiensis, B., op. cit., p. 142. — Charleton Point and English Head; H. R. R ? RECURVIROSTRA, Hall.-r-This species or one closely allied to it occurs abundantly in numerous localities ; H. R. Genus Athyris, McCoy. A ? ANTICOSTIENSIS, B., op. cit., p. 147. — Abun(^ant near English Head ; H. R. LAMELLIBRANCHIATA. Genus Cyrtodonta, Billings. The internal characters of the following species, have not been Hscer- tained, and they are, therefore, classified provisionally as below. I uoubt that any of them belong to the genus. C ? Harrietta, B., op. cit., p. 149. — English Head ; H. R. C ? Emma, B., op. cit., p. 150.— English Head ; H. R. Fig. 1. Fig 1. — Cyrtodonta? sigmoidza. a, left valve ; b, dorsal view. C ? siHMOiDEA, B. Can. Nat. Geol. vol. iii, p. 438.— Obliquely sub- rhomboidal, strongly ventricose. Anterior extremity short, rounded, scarcely proj'^oting in front of the beaks ; ventral margin broadly convex, the whole length; posterior portion of the shell tapering to a rounded angle situated at about half the height ; hinge line scarcely half the whole length, sloping upwards and backwards ; a little more than the posterior half of the dorsal margin nearly straight and sloping down to the posterior angle. The beaks are small, closely incurved and usually in contact or nearly so. A strong rounded convexity commences at the beaks and passing along the upper side of the umboaes, runs with a sigmoid curve backwards and downwards, Leniith usuaUv 18 lines • heif^ht twelve lines • depth of both valves 12 lines. Specimens two inches in length occur. This species has nearly the same form as C. Hindi, but is shorter in proper- 14 tion to the height. Macaaty Bay, and near the West-end Liglit-house ; H. R. J. Richardson P:^ Fi g. 2. .Ji 2-C>to(fondy ventricose. In the cast of the interior the beaks project beyond the anterior extremity, which is rounded and not strongly developed. The ventral margin is moderately convex the whole length ; dorsal margin sloping from a little in front of the mid-length to the pointed posteiior extremity. Beaks small, incurved, but not in contact. On a dorsal view the outhne is cordiform, the umbones angular on the upper side. Length 12 lines ; height about 6 lines ; depth of both valves 8 lines. Charleton Pomt ; H. R. J. Richardson. C ? Anticostiensis, n. sp.— Shell rather strongly convex ; anterior extremity short rounded ; ventral margin straight or slightly convex for a short space partly in front of the mid-length ; posterior extremity broadly and nearly uniformly rounded, the most projecting point a little below the middle ; dorsal margin elevated in the posterior half; hinge-line apparently about half the length. The beaks are closely incurved ; umbo rather large and convex ; greatest gibbosity of the shell at about one-third of the length from the anterior extremity and a little above the mid-height. Length of largest specimen seen 13 lines ; height at 5 lines from the pos- terior extremity 10 lines ; height at the umbones 7 lines ; greatest depth of a single valve 5 lines. Surface unknown but most probably concentri- cally striated. English Head ; H. R. J. Richardson. C ? iNSDLARis, n. sp.— Sub-ovate ; beaks nearly terminal ; anterior extremity obscurely developed; ventral margin gently convex ; posterior extremity nearly uniformly rounded ; dorsal margin somewhat straight ; slightly compressed and elevated, gradually rounded into the posterior margin. Length from the beaks to the middle of the posterior extremity 14 Hues ; height at one third the length from the same point 11 lines ; depth of both valves about 8 lines. Of this species several specimens have been obtained, but th^y are all in an imperfect state. It has somewhat of the form of an Amhonychia, 15 (gradually enlarging from the beaks to the opposite extremity) but the concentric markings on the casts induce me to believe that it does not belong to that genus. West end of the island ; H. R. J. Richardson, T. C. Weston. C ? UNGULATA, n. sp. — Obliquely ovate, cordiform, extremely tumid ; anterior extremity short rounded , ventral margin rather strongly and uniformely convex ; posterior extremity sub-angular about the mid-height, obscurely rounded above. The beaks are long and much incurved, but not in contact. The greatest gibbosity is a little in front of the middle. From the beaks the principal convexity extends with a somewhat sigmoid curve backwards and downwards towards the lower posterior martnn. Surface with a number of concentric sub-lamellose ridges of growth which leave their impressions on the cast of the interior. Length 19 lines ; height 14 lines ; depth of both valves 15 lines. In a dorsal or ventral view the outline is broadly cordiform, the beaks turning forward and downwards with a hook-shaped curve. The space between the beaks (in the only specimen collected) is obscured by the matrix so that the characters of the hinge line cannot be ascertained. Macasty Bay ; H. R. T. C. Westm. Fig. 3. Fig. 2. — Oyrtodonta? ungulata. a, right valve; 5, anterior extre- mity. Genus Pterinea, Goldfuss. P. BELLiLiNEATA, n. sp. — Left valve gently convex obHqucly, semi- elliptical ; hinge line long and straight ; anterior side obliquely rounded ; uniformly curving into the ventral margin ; posterior side slightly concave, below the cardinal aagle, and then rounded into the ventral margin. The beaks and anterior wing are not visible in tb' specimen, being buried in the matrix. Surface with very distinct and slightly undulated raised lamellose concentric lines, about two in one line. They cover the whole surface up to the umbones. Obscure indications of radiatincf striae can be made out. Length on the liinge line 15 lines : height 12 lines. White Cliff; H. R. J. Richardson. 16 P. PROLiFiCA, n. sp.— Obliquoly sub-rhomboidal ; anterior side nearly straight for about half the length, sometimes a little concave near the hmge line, and often gently convex, forming an angle of about 75° with the hinge line ; ventral margin uniformly rounded ; posterior side con- cave just below the angle and convex in the lower half. There is, some- times, a small anterior wing, but in many individuals it is either very slightly or not at all developed. Posterior wing moderately compressed. Beak small, scarcely elevated above the area, the latter about one line wide in the left valve and less in the right. The left valve varies from gently to moderately convex. Right valve gently concave. The anterior and posterior sides are sub-parallel. The umbones are between one-fourth and one-third of the length of the hinge line from the anterior angle. Surface with obscure concentric striae and rugose lamellae of growth. Length of a large individual on the hinge line, two inches ; height the same. DiflFers from P. demissa, Conrad, in being in general one-fourth shorter from the hinge-line to the ventral margin. Charieton Point and Macasty Bay ; H. R. J. Richardson, T. C. Weston. Genus Ischyrinia, N. G. Generic characters. — Equivalve, inequilateral, two strong ridges radiating from the beak in the interior of each valve. Fig. 4. Fig. 4.— Ischyrinia Winchelli. a, left valve ; 5, cast of the interior of left valve ; c, cast of the interior of right valve. I. Winchelli, n. sp. — Shell triangular, strongly ventricose. Anterior ? (flat side) somewhat straight, gently convex above and concave below ; posterior? side slightly curved; ventral margin moderately rounded. Beaks small and obscure, closely incurved. Surface with a shallow concave groove close to the anterior edge, in which are four or five small rounded ribs all of them covered with very fine longitudinal stnse. All the remain- ing portion of the sides of the valves apparently smooth, but in certain lights exhibit indications of minute stria9 radiating from the umbones to the ventral margin. The anterior or flat extremity is, with the exception of the small wing, gently concave. The anterior and posterior slopes form with f- 17 each other an angle of a little more than 90°. Length from posterior to anterior ventral angles 14 lines ; height to the umbones 10 lines ; depth of both valves about 9 lines. Macasty Bay ; H. R. T. C. Weston. Dedicated to Professor Alexander Winchell, of Ann Arbor, Michigan. Genus Ambonychia, Hall. A. RADIATA, Hall. — A variety of this species occurs at Charleton Point and English Head ; H. R. Also abundantly at Gamache Bay ; Div. 1 A. G. ' • ' GASTEROPODA. Genus Subulites, Conrad. S. RiCHARDSONi,B.,Rep. 1857, p. 306.— Charleton Point; H. R. S. ELONGATA, Conrad. — A variety or closely allied species occurs at Macasty Bay ; H. R. Also at Junction Cliff; Div. 1, A. G. Genus Trochonema, Salter. T. UMBILICATA, Hall. — English Head ; H. R. Genus Pleurotomaria, Defrance. P. Americana, B., Can. Nat. Geol., vol. v, p. 164.— Charleton Point, and Macasty Bay ; H. R. P. Helena, B., op. cit., p. 165.— Charleton Point and Table Head • Div. 1, H. R. P. CIRCE, B., op. cit., p. 303.— English Head ; H. R. P. SUBCONICA, Hall.— Macasty Bay and English Head ; H. R. Genus Cyclonema, Hall. Fig. 5. Fig. b.~Cyclonema Thalia. A specimen enlarged three diameters. C. Thalia, B., Rep., 1857, p. 303.— Charleton Point ; H. R. Also at Junction Cliff; Div. 1, A. G. Pleurotomaria Thalia, loc. cit. 18 Genus Murciiisonia, D'Archiac et D'Verneuil. M. ORACiLis, IlalL—Charloton Point and numerous other localities ; H. R, Also at Capo Sand-top Bay; Div. 2, A, G. M. VENTRicosA, Hall.— A species not distinguishable, in casts, from this occurs at EngUsh Head ; H. R. Also at Gamache Bay ; Div. 1,A G M. TERETiFOUMis, B., op. cit., p. 208.— Charloton Point ; H. r' M. RU.JOSA, B., op. cit., p. 299.-English Head ; H. R. Also abund- antly at Garuache Bay ; Div. 1, A. G. M. MULTivoLvis, B., op. cit., p. 299.— Macasty Bay ; H. R. M. MoDESTA, B., op. cit., p. 299.— English Head and Macasty Bay ; H. R. •' ^ ' M. VARIANS, B., op. cit., p. 300.— English Head ; H. R. Genus Metoptoma, Phillips. M. Alceste, B., op. cit., p. 153. M. Ehtella,, B.,op. cit., p. 153.- -English Head ; H. R. -English Head ; H. R. HETEROPODA. Genus Belleropiign, Montfort. B. acutus, Sowerby.— Macasty Bay and EnsHsh Head ; H. R. Ga- mache Bay ; Div. 1., A. G. This type (of a peculiar group of species of the genus) makes its first appearance so far as is yet known, in the Calci- ferous formation (B. macer, Pal. Foss. vol. i, p. 346). It occurs next in the Ldvis formation (B. Falinurus, op. cit., p. 311). And again in the Black River limestone where we have (B. disoulus and B '^Arao Geol. Can. p. 146). ' B. Canadensis, n. sp.— Shell largo with a greatly expanded aperture. Whorls two or three, but only the last one visible, strongly ventricose and sub-angular on the dorsal side, carinated ? along the median line ; umbili- cus at its margin about one-third the diameter of the whorl. Surfocc, on the dorsal side, with obscure ridges which radiate from tlie median line towards the margin of the aperture ; they are scarcely visible on the body of the whorl, but become very prominent on the outer surface of the ex- pansion of the aperture. In some specimens, also, they alternate in size. On the surface of the boay whorl there are indications of smaller trans- verse ridges giving an obscurely cancellated appearance. Width of the expansion of the aperture about 3 inches. When placed with the aperture downwards the height of the most elevated point of the whorl is 18 lines. Macasty Bay ; H. R. T. C. Weston. 19 Arffo, Fig. 6. Fig. 6. — Bellerophon Canadensis. — Side and dorsal views. B. FRATERNUS, n. sp.— Ovate, about one inch in diameter; whorls three or four, all visible in the deeply concave umbilicus, depressed con- vex on the dorsum, somewhat acutely carinated on the sides or at the um- bilical edge ; aperture slightly expanded, only a little larger than the body of the whorl ; a sharp median ridge or keel extending from the aper- ture a short distance backwards. In section the tube is transversely elhpti- cal being compressed in the dorso-veutral direction ; the greater diameter 20 I being to the less about as five is to eight. The whorls are so compactly inrolled that the ventral side of each is indented to about one fourth the thickness of the one preceding. A few obscure undulations are seen on the cast near the aperture. Surface unknown. Transverse width of the last whorl at three lines from the aperture 8 lines ; dorso-ventral depth 5 hnes ; width of the aperture about 9 lines ; diameter of the whole mea- sured from the median point of the aperture on the dorsum through to the opposite side 13 lines ; diameter at right angles to this latter mea- surement 11 lines. This species is allied to B. expamus, Hall, from which it differs princi- pally in having the dorsal aspect flatter, and the aperture not so greatly expanded. English Head, H. R., J. Richardson. It is possible that on the perfect shell the dorsal keel may follow the whorl the whole len-th, but on the cast of the interior it becomes obsolete at five or p^jc lines from' the aperture. B. MISER, n. sp.— ShoU small with the aperture widely expanded trans- verselv. Whorls about two, but only one visible, obscurely carinated along the median line of the dorsum, thence with a flat or gently convex slope to the edge of the umbilicus, the latter small and with the ed.^es nar- rowly rounded. Surface unknown. Diameter from the median point of the dorsal margin of the aperture through to the opposite side 7 lines • transverse width of the aperture 9 lines. The specimens are all imperfect' It resembles B. Charon (Can. Nat. Geol. v. 169 ; Geol. Can., 146, fig. 97) but is a much smaller species. B. expansus, Sowerby not Hall is also of the same type. Macasty Bay ; H. R. T. C. Weston. ' B. BiLOBATds, Sowerby.— Macasty Bay ; H. R. Also Gamache Bay ■ Div. 1, A. G. "^ B. soLiTARius.--About two inches in diameter ; whorls rather stront^ly ventricose on the dorsum, rounded at the edge of the umbilicus ; the latter scarcely one-fourth the greater diameter. The aperture is not preserved in the specimen, but it was not, judging from appearances, much expanded. The specimen measures 21 lines across from above downwards ; and 15 lines in the tranverse direction. The width on the side opposite the aper- ture is 7 lines and where the last whorl is broken off (evidently very near the aperture,) about 11 lines. Resembles B. fraternus, but is more con- vex on the dorsum and has a smaller umbUicus. Macasty Bay ; H. R. T. C. Weston. Genus CrRTOLiTES, Conrad. C. PANNOSus, n. sp.— Shell small, discoid. Whorls three or four, com- pactly inrolled, the inner ones slightly mdenting the outer, all seen in the umbilicus, the dorsal aspect with - "in distinctly ekvatpd median keel from which the surface has a genu. ^e to the narrowly rounded fi compactly fourth the iro seen on idtli of the al depth 5 'hole mea- Q through atter mea- ors princi- 30 greatly e that on ength, but i from the ied trans- carinated ly convex sdges nar- a point of * 7 lines ; tnperfect. 146, fig. i Hall, is she Bay ; strongly he latter served in cpanded. and 15 he aper- ivy near ore con- ; H. R. ir, corn- seen in median ounded 21 edge of the umbilicus. Surface with deeply serrated, zig-zag fissnrc-like atrire or imbrications, which cross the whorls at nearly a right angle from the dorsal keel into the umbilicus. Width of a specimen of throe complete whorls 6 lines ; transverse width of aperture about 3 lines. (In some it appears to bo proportionally wider, but as the specimens are imbedded in stone this point cannot be accurately decided.) Hei/'ht of the aperture apparently somewhat less than the width. This species is most closely allied to C. compressiis, Conrad, but is smaller, and has the whorls in con- tact. English Head and Charleton Point; H. R. J. Richaidson. C. DESIDERATUS, n. sp.— This species differs from 0. pannoaus in having the whorls less slender, a specimen of throe whorls being nine lines in dia- meter. They are also crossed by obscure transverse undulations as in 0. ornatus, Conrad. The specimens are all casts of the interior, and the sur- face is therefore unknown. Macasty Bay ; H. R. T. C. Weston. PTEROPODA. Genus Conularia, Miller. C. SPLENDIDA, n. sp.— Acutely pyramidal, four sided, tranverse section square, angles narrowly rounded and with a longitudinal groove. The sides are flat, or nearly so, with a median line. The tranverse grooves are concave in the bottom, and meet on the median line at an angle of 160° or 170''. The ridges between the gi'ooves are minutely rounded on their ed^es, sometimes obscurely nodulose, and occasionally divided by a fine impressed line. These characters are all seen on different parts of the some specimen. There are six ridges, and the same number of grooves in the length of one line. The longitudinal striae diverge outwards from the median line towards the angles in their course towards the aperture at an angle of 15 to 25. They are obscurely developed but still distinctly visible when the surface is well preserved. There are from fifteen to twenty of these striae in the width of one line. Length of best preserved specimen 24 lines ; width of the sides at the aperture 6 lines. This species is certainly closely allied to C. Trmtonensis, Hall, from which it only differs in having more numer- ous longitudinal striae. Charleton Point ; H. R. J. Richardson. 0. ASPERATA,n. sp.— This species when perfect is most probably like 0. splendida, an elongated four-sided pyramid. The only specimen collected is compressed so that the tranverse section is elliptical or rather rhomboidal. There are four grooves corresponding to those on the angles, and four median lines. The tranverse elevated striae and grooves cross the median Unes at an angle of about 170^. The grooves appear to be sub-angular in the bottom, but owing to the condition of the specimen this is not certain. c %M K ■I 09 Tho strioB have their edges serrated with small conical tubercles, of which there are six or seven in tho length of one line. Length of the spocitnen lU lines ; width at the larger extremity 18 lines ; thickness 8 linos ; width of tho smaller extremity 7 lires ; thickness 4^ lines. Near che smaller extremity there are nine transverse ridges and grooves, in two lines, but at the larger there are twelve b the same space. Macasty Bay ; II. R. T. C. Weston. Genus Pterotueca, Salter. P. TRANSVERSA, Emmons. Macasty Bay ; II. R. Also Gamache Bay ; Div. 1, A. G. CEPHALOPODA. Genua Ortuoceras, Breynius. 0. anticostiense, B., Rep. 18.57, p. 310.— Charleton Point and various localities at the westerly end of the Island ; II. R. This species also occurs abundantly at Lake 8t. John on the River Saguenay • II. R. 0. FORMOSUM, B., op, cit., p. 317.— English Head ; II. R. Also at Junction CliiF; Div. 1, A. G., and on the island of Montreal in the Tren- ton limestone. 0. xiPHiAS, B., op. cit., p. 318.— Cliffs east of English Head ; H. R. Also at the City of Ottawa in tho Trenton limestone. 0. liALTEATUiu, B., op. cit., p. 318. — English Head ; H. R. 0. FULGUR.=r=0. propinquum, B., op. cit., p. 320. — I have ascertained that Eichwald had described a species under the name of 0. propinquum previously to 1857, and therefore, it is now proposed to name this as above. Charleton Point ; H. R. 0. Lyelli, B., up. cit., p. 320.— Cliff east of Salmon River ; II. R. 0. Sedgwick] ■'! . op. At., \. 320. — West-end; H. R. Also at Gamache Bay ; Div. 1, A. G. 0. Crocus.= 0. perannulatum, B., op. cit., p. 319. — Thi 'atter name was proposed for an Orthoceras in 1843, by Portlock. I thei jfore beg to make the above alteration. West-end ; H. R. 0. FERUM, n. sp. — Annulated, apparently tapering at the rate of one and a-half lines to the inch ; section circular or nearly so ; septa distant from each other about one-third of the diameter. The annulationy are wide, gently convex, separated from each other by concave spaces equal to themselves (to the annulations) in width. The distance between the 23 summits of tho annulations where the diameter of the fossil is 1.. lines, is about <; linos. Surface longitudinally marked with small ridges, of which there are four or five in the width of one line. One specimen from Junction Cliff which seems to belong to this species has a large and small set of longitudinal striao, there being two or three of the smaller bet eon each two of tho larger. From certain indications, on the cast of one specimen, there would appear to be a sei of fine engirdling strire, but those may bo appearances only. Siphuncle unknown. West-end ; H. R. Also, Junction Cliff; l)w. 1, A. G. T. C. Westo.i. 0. MAQNisuLCATUM, B., op. cit., p. 830.— Charleton Point ; II. R. 0. SiEBOLDi, n. sp.— Shell of medium size, subfusiform, taporin',' from the last chamber towards the apex at the rate of about twelve lines in a length of seven inches, in which space there are seventeen septa. Section apparently not quite circular. Siphuncle near the ceiure, small in passing through the septa, but dilated to the width of three Imes in the chambers where the diameter of the shell is one inch. Length of the best preserved specimen 13 inches ; length of chamber of habitation G inches ; diameter of the last septum 30 lines ; diameter at the aperture 24 lines. Surface unknown. Near the west-end Light-house ; H. R. Also at Gamache Bay ; Div. 1, A. G. T. C. Weston. Genus Oncoceras, Hall. 0. CONSTRICTUM, Hall.— The specimens are slightly more slender and the septa rather more distant. It is probably a variety or at least a very closely allied species. Near the westrcnd Light^house ; H. R. Genus Gompiioceras, Sowerby. G. ? OBBSUM, B., op. cit., p. 311.— Charleton Point and Macasty Bay ; H. R. Genus Ascoceras, Barrande. A. Canadense, B., op. cit., p. 310.— English Head ; H. R. A. Newberryi, B., Pal. Foss., vol. i, p. 164.-English Head ; H. R Also Junction Cliff; Div. 1, A. G. This species occurs on the south side of the St. Lawrence opposite Three Rivers ; H. R. Genus Litdites, Breynius. L. ? MAQmFicvM.= Gyrocera8 magnificum, B. Rep. 1857, p. 307. Genus Nautilus, Linnseus. N. Hercules, B., op. cit., p. 306.— Charleton Point; H. R. 24 CRUSTACEA. Genus Asapiius, Brongniart. Fig. 1. Fig. 1 .—Asaphm platycephahis, from English Head. A. PLATYCEPHALUS, Stokes.—Occurs in numerous localities on the north side and west end of the island. It is not easy to distinguish fragments of this species from such forms as A. canah's, A. megistos, and some others. We have, however, from English Head, a specimen with the head and the first six segments of the body perfectly preserved with the posterior angles of the cheeks clearly developed- 1 belieVe, also, that some dotacLed pygidia from Gamache Bay in Div. 1, A. G., belong to this species. A. NOTANS, n. sp.— Form ovate, broadly rounded at both extremities, pygidium obscurely trilobed, cheeks terminating in small spines. Head strongly convex, semi-elliptical or rather lunnte uniformly rounded in front, the margin from a line crossing a little in xront of the eye backwards to the points of the spines somewhat straight but sloping outwards. Eyes about one-third the whole length of the head and so situated that a hne drawn across the head at the mid-length would touch their anterior angles. The terminal spines are acutely sub-conical, rounded on the inner side and with, apparently, a sharp edge on the outside ; they extend backwards to about the third pleura. Length of the head from the front to posterior margins in a straight line (or by callipers) a little less than half the Avidth at the posterior margin and also about one-eighth leas than the length of the thorax. The latter is distinctly trilobed, the axis moderately and uniformly convex and a little more than one-third the whole width. Pyg- idium moderately and unif^-mly convex, nearly a semicircle, its length °a little more than half its width ; no concave groove round the margin ; the 25 ill axis obscurely indicated, quite obsolete at two-thirds the length ; side-lobes with a few obscure indications of lateral furrows. Length of the largest specimen collected 31 lines ; width at the fourth pleura about 20 lines ; length of the head from the front to the posterior margin in a straight line 10 lines ; length of the same following the curve 12 lines ; width at the base of the spines 23 lines ; length of the thorax 12 lines ; length of the pygidium Hi lines ; width of the same 18^ lines. Fig. 8. Fig. 8. -Asaphus notans. — A specimen from English Head. The specimen figured (which is intended to be the type) has the crust removed from the greater part of the head and the eyes broken off. But another specimen about 18 lines in length has the head perfect Avith the exception of the posterior angles of the cheeks. It was found in the same locality with the large one, and appears to be certainly the same species. The eye of this specimen is truncato-conical, rising vertically (to the horizontal plane of the body) to the height of a little more than one line ; the summit is irregularly rounded, most elevated near the posterior side ; on the inside the surface slopes with a gentle curve, and gradually merges into the general surface. Examined microscopically the visual surface is seen to be smoooth and transparent, showing, beneath, a vast number of lenses arranged in both vertical and oblique lines. The facial suture in proceeding from the eye to the front margin has the usual sigmoid curve, but for about one-half its course in the middle of the margin it runs along the extreme edge ; not a little within the edge as is usual in srtocies of this genus. The surface is apparently smooth, but when magnifiet eems to be obscurely wrinkled. Length of the head in a straight line a little more than 5 lines ; length of the thorax 6 lines ; length of the eye about 1^ lines. The anterior angles of the eye are at the mid-length of the head, and the posterior about 1 line from the margin. 26 Tliis species somewhat resembles A. megistos, Locke, figured in the (Trans. Am. Ass. Geols and Nats. 1853, pi. VI.) But according to that figuve the eye of A. megistos is about one-sixth the length of the head ; a line drawn across the head at the mid-length is more than the len'^th of the eye distant fro. > the anterior angles of that organ; the head is one- ninth longer than the thorax. There are other differences, but these are the more important. This species occurs at EngHsh Head ; H. K. Also, at Gamache Bay in Div. 1., A. G. T. C. Weston. A. ALACER, n. sp — This species is ovate, broadly rounded at both extre- mities, (pygidium obscurely or not at all trilobcd ?) Cheeks Avithout ter- minal spines. Head convex, semi-elliptical or lunate, uniformly rounded in front, gently convex at the sides ; angles acutely rounded ; length, by callipers, to the width in the proportion of four to seven. Eyes annular, abruptly elevated on the outside, flat or gently convex on the top, scarcely rising so high as the glabellar space between them ; their length is to that of the head in the proportion of three to eight ; their anterior angles reach the mid-length of the head. The rows of lenses, seen under the transpar- ent cornea, cross each other diagonally, both sets being oblique. Thorax distinctly trilobed, axis moderately convex more than one-third the whole width. Pygidium depressed convex, semielliptical ; margin broadly rounded ; length to the width in the proportion of 3 J to 6f . Surface ap- parently smooth. The specimen is a small rolled up individual, perfect with the exception of the central part of the pygidium whore it is worn so that the characters of the axis cannot be made out. a. b. Fig. 9. Fig. .9. — a, front view of the head of A. alacer ; b, front view of the head of A. platycephalus. Tliis species differs from A. notans, in the absence of cheek-spines, in the form of the eyes and also in their elevation. In the former they are so much elevated that viewing the head directly in front, the outline between them is concave ; in the latter slightly convex. In this latter respect also it differs from A. platycephalus. It occurs at Charleton Point ; H. R. J. Richardson. A. MEGISTOS, Locke. — Fragments of a large trilo1)ite either identical or closely allied to this species occur at numerous localities on the north 27 and west coasts of the island ; H. R. Also at Gamache Bay, in Div. 1, A. G. Both the pygidium and the head are proportionally more elon- gated than is represented in Locke's figure, but the eye occupies the same position. The margin has a concave depression all round just inside of the edge ; the latter is bevelled. The central portion of the head is punc- tate, but a space around the margin is covered with fissure-like stride. There are fragments which indicate a length of two feet. Genus Ill^nus, Dalman. I. ORBICADDATUS, B., Can. Nat. Geol., iv, p. 379. This species was found by T. C. Weston in 18G5 at English Head ; H. R. It occurs also at Gamache Bay and S. W. Point ; Divs. 1 and 4, A. G. A specimen with the head, thorax, and pygidium in connection, but a good deal worn, was collected by Weston at Gamache Bay. It is figured below. I, GRANDis, B., Can. Nat. Geol., iv, p. 380. Charleton Point ; H. R. Also at Gamache Bay and S. W. Point ; Divs. 1 and 4, A. G. Genus Dalmanites, Emmrich. D. CALLICEPHALUS, Hall. — CSiarleton Point, English Head and West- end ; H. R. Genus Cheirurus, Beyrich. C. PLEUREXANTHEMUS, Green. — Occurs at numerous localities on the north and west coasts ; H. R. Also at Gamache Bay ; Div. 1, A. G. C. Icarus, B., Can. Nat. Geol., v. 67. Charleton Point, English Head, and Macasty Bay ; H. R. ^ri^^^sj^T-Sv Pig. 10. Fig. 11. Fig 10. Fig. 11. -Illmnus orbicaudatus—A specimen from English Head. -Cheirurus Mmitor.— Part of the head of this species. C. NujiiTOR, n. sp. — Glabella (that portion of it in front of the neck- furrow) sub-circular or sub-quadrate, the front somewhat straight or gently convex ; the front angles narrowly rounded ; sides broadly rounded, the greatest width about the mid-length. There are three pairs of glabel- lar furrows all deeply impressed but not extending inwards more than one- is* 28 fourth the width. The first pair enter just behind the anterior angles, and extend inwards and backwards at an angle of about 45 deg, with the lon- gitudinal axis. The second pair arc at about the mid-length, not so deep as the first, extending inwards nearly at a right angle but still curving a little backwards. The third pair are situated at about one-fourth the length from the neck-furrow ; they are like the second, but seem to be deeper inwards. The glabella is strongly convex, nearly hemispherical, greatest elevation on a line with middle pair of furrows. A short stout spine rises from the back part, just between the two posterior glabellar lobes and behind the last pair of furrows. It extends nearly horizontally backwards, but sloping a little upwards. Fixed cheeks tumid ; the eyes are small and about opposite or a little in advance of the second pair of furrows. Posterior margin of head, neck segment, movable cheeks and all other parts unknown. Length of glabella from the neck-furrow to the front margin 4 lines ; greatest width about the same ; distance of the eye from the side of the glabella 2 lines. Surface coarsely tuberculated. This species is allied to Sphxrexochus cephaloceras, Nieskowski, but has the glabella more nearly circular and the spine more elevated. It differs too Avidely from 0. perforator, 0. Crknieus, and C. Satyrus, B., Pal. Foss., to need comparison. English Head ; H. R. Genus Proetus, Steininger. P. AlaricuSj B., Can. Nat. Geol. v. 68, Charleton Point and English Head ; H. R. Genus Harpes, Goldfuss. H. Ottawaensis, B., Pal. Foss., vol. i, p. 182, English Head and Wreck Point ; H. R. The specimens are imperfect, and although the up- per parts of the cheeks are not so densely punctate, yet, as the proportions ar'j precisely the same as those of the typical specimen from the Trenton limestone, it seems the better course to refer them to this species for the present. Genus Calymene, Brongniart. C. Blumenbachi, Brongniart. — Charleton Point ; H. R. Also in Divs. 1,2,3,4, A. G. Genus Leperditia, Roualt. L. Canadensis, Jones. — Occurs at Charleton Point ; H. R. The variety L. Anticostinia is found at East Point ; Div. 3, A. G. 29 Catalogue of the Fossils op the Anticosti Group with Descriptions OF SOME OF the SpECIES. The Anticosti Group occupies all of the south shore of the island, with the exception of a small portion at the west end Ijing west of Gamache Bay,— the east end, and also about fourteen miles of the north coast between the east end and Fox Point. They consist of argillaceous and pure limestones with some interstratified shale fossilliferous throughout. In the Geology of Canada they are described as consisting of four divisions, of which the thickness of each is as follows : Division 4. Thickness 69 feet. " 3. " 540 " " 2. " 447 " " 1. " 306 " 1362 Descriptive sections of these rocks will la found in the work cited, p. 298-304. PROTOZOA. Genus Receptaculites, Defrance. R ? iNSULARis, n. sp.— The specimen is a small cylindro-conical body 16 lines in length, 6 hnos in diameter at the larger extremity, and 4 lines at the smaller where it is broken off. The larger extremity has the edges obtusely rounded and a shallow depression in the centre. The outer integu- ment, or ectorhin, consist of small rough, convex, rhomboidal plates, the greater diagonal of which is J of a line and the lesser ^ of a line. They are arranged (on the larger extremity where alone they are preserved) in spiral rows crossing each other as in the ordinary forms of the genus. There seems to be a small rough pore at each point where the angles of four plates meet. Where the ectorhin is removed, the cast of the inner sur- face of the integument is covered with small round pits, the relation of which to the plates cannot be clearly made out. It is clear that they must correspond either to the depression at the angles of the plates or to a small protuberance on the centre of the underside of each plate. In the latter case they would represent the tubes of a true Receptaculites. The integu- ment is rendered cellular by numerous small flat canals, some of which run horizontally in a direction round the cylinder but none continuous, perhaps only from one plate to another. Some of them seem to have a longitudinal course transverse to that of the others, but their relations to each other or to the platoa cannot Ijo made out. In one place there appear to be two integuments, — an ectorhin and endorhin, but elsewhere oiJy one. 30 This fossil evidently belongs to a genus quite distinct from Receptaenlites, but of the same family. It appears to be congeneric with Tetragonis sulcata. Eichwald, Lethaea Rossica, p. 432, pi. XXVII, fig. 5. I would refer it to Tetragonis provided T. sulcata were accepted as the type of that genus, an arrangement hardly to be expected while the laws of scientific nomenclature continue to be construed as they are at present. Should T. Murchisoni turn out to be a true IteceptacuUtes, then, accord- ing to the most widely approved mode of disposing of such questions, Tetragonis must be suppressed, and remain forever afterwards a natural history incumbrance in the shape of a synonym. It would be the better course to retain the name with T. sulcata as the type. In the meantime I shall place this species in Receptaculites provisionally. The specimen was found at Gamache Bay; Div. 1, A. G. T. C. Weston. ZOOPHYTA. Genus Heliolites, Dana. Fig. 12. Fig. 13. Fig. 14. Fig. 12. — Heliolites affinis. " 13. — " speciosus. " 14 " exiguus. H. AFFINIS, B., (ante, p. 5.) — White Cliff, Junction Cliff, Wall's Cove, South Point, and other locaUties; Divs. 1, 2 and 3, A. G, Also H. R. H. SPECIOSUS, B., Can. Nat. Geol. [2] vol. ii, p. 426. — Corallum clavato-turbinate or sub-pyriform ; cells a little more than one line in diameter, on an average, usually about half their width distant from each other, but occasionally in contact and sometimes more widely separated ; their margins thin, elevated above the general surface, crenulated or orna- 31 mented with twelve small rough tubercles. The septa seem to be only mcipiently developed, but they can be distinctly seen in the inside of the cup as so many small vertical ridges ; there a). pear to be twelve of them. The tabuliB are somewhat irregular, being either horizontal, oblique, flat' convex or concave, from two to four in one line. The coenenchyma is composed of small vesicular cells from one-sixth to one-third of a line in diameter. The surface between the cells is, when perfectly preserved covered with small rough tubercles. When the specimens are worn, the surface presents only the circular apertures of the cells, and is destitute of granulation. Only six specimens of this species were collected, and they are all of the clavato-turbinate form. It is possible that hemispherical or globular colonies may exist, as there is much variety m the form in species^'of this genus. Some of the cells are nearly two lines in diameter, others less than one line. By the size of the cells this species is distinguished from all others of the genus except H. megaatoma (McCoy) and^ .^. viacrostylus (Hall). From these it differs in the structure of the tissue between the tubes. In H. megastoma the cells of the coenenchyma are arranged in polygonal columns. Such, also, seems to be their structure in JI. macrosti/lus. The species which Edwards and Haime have placed in their genus Lgellia L. Americana and L. glabra, have the tubes rather more widely separated and the septa more strongly developed. Junction Cliff; Div 1 A G T. C. Weston. • » • • H. Exmuus, B., op. cit., p 428.— Cells about half a line in diameter and somewhat more than their own width distant from each other, with thin elevated margins, apparently not crenulated. Septa not visible in the only specimen collected. Tabulae numerous, four to six in one line. Coenenchyma minutely vesicular. As the specimen is somewhat worn, it is possible that the margins of the cells when perfect may be crenulated. The coenenchyma appears to be vesicular, but more specimens are required to decide this point. This species on account of the small size of the cells and their greater proportional distance from each other, seems to be distinct from all the others. Gamache Bay ; Div. 1, A. G. T. C. Weston. B. SPARSUS, B., op. cit., p. 428.— Cells varying from half a line to one line in diameter, distant from one to three lines from each other. Radi- ating septa much developed, sometimes meeting in the centre. The coen- enchyma varies in structure, being in some places entirely vesicular, and elsewhere composed of vertical series of square cells as in H. megastoma. Tbeso variations are seen in the same specimen. Chicotto River ; Div. 4, A. G. J. Richardson. n 32 H. TENUIS, B.,op. cit., p. 428.— Cells, in general, a little less than half a lino in diameter, and half their own width distant. The walls are exces- sively thin and rarely distinguishable, not forming a distinct ring as in the others above described. Cconenchyma, as seen upon the surface, composed of minute polygonal cells. This species may, perhaps, belong to the genus Protanea. Gamache Bay ; Div. 1, A. G. T. C. Weston. Genus Favosites, Lamarck. F. PROLiFirr^!, B., (ante, p. 6.) — Occurs in numerous localities through- out the island ; Div. 1, 2, 3, 4, A. G. Also in the H. R. F. flOTHLANDicA, Lamarck. — A species which cannot be (without com- parison with specimens from the locality of the type) distinguished from this occurs throughout Divs. 2 3, and 4, A. G. F. FAVOSA, Goldfuss.— The Jumpers, Div. 4, A. G. g. FIDROSA. the H. R. Genus Stenopora, Lonsdale. -Occurs throughout Divs. 1, 2, 3 and 4, A. G. Also in S. BULBOSA, B., op. cit., p. 429. — This species is found in small globu- lar or sub pyriform masses from six to thirty lines in diameter. There is often a small shell buried in the base. The tubes are about the size of those of S. petropolitana. Gamache Bay, Div. 1, A. G. T. C. Weston. Genus Halysites, Fischer. H. catenulatus, Linnajus. — Occurs in numerous localities throughout Div. 1, 2, 3, and 4, A. G. Also in the H. R. Genus Calapcecia, Billings. h. Fig. 15. Fig. \^.- -Calapoecia Anticoitiensis. — a, portion of the surface; b, a vertical polished section. C. Anticostiensis, B., op. cit., p. 426. — Corallum forming depressed hemispheric masses. Corallites a little more than one line in diameter with smaller ones between them, sometimes in contact, but, in general, dis- S3 tant from one-fourth to one-half their .liametor. Cost, fonnin, a fringe arouu.l the apertures and also seen in vertical polished sections. Intoreri. 1 lar fssue conjpose.1 j.-incpally of thin, undulating or flat horizo^^t d . Phragms extendu.g froru tube to tube and subdivided into square el s hv he cost, at the surface of the walls. Tabul. obscurely ^oer, the specnnens observed, apparently very thin. There are alLt the dia- phragms and tabuh« in one line. The radiating septa form thin sh rn strong, elevatecl stri. on the inside of the tubes where i; ed i Itld specimens. West side of Gamache Bay; Div. 1, A. G.» T. CWoJol Genua Alveolites, Lamarck. A Labechei, Edwards and Haime.-Occurs abundantly at South-west Pomt and the Jumpers ; Div. 4, A. G. Genus Petraia, Munster. the^H!r''^' ^" ^'''*'' ^' ^-^-^^^"^^^^^ ^^y ' I>i^- 1' A. G. Also in P. PULCiiELLA B., op. cit., p. 424.-The two specimens on which this species IS founded are acutely pointed and moderately curved The fol lowing are their dimensions. One of them is nme lines in length and six and a-i,.ilf in diameter at the margin of the cup. The other is ten lines in length and seven in diameter. There are about sixty septa in each In a polished longitudinal section, the cup is found to extend about half the length of the whole ^ossil downwards and to have a conical elevation in the centre. The septa, above the bottom of the cup extend inwards about one wtite" 'SlffTDivTi^ " ^"''' '' ''' "''^'"- ^""^"" ^^^ff ^"d ^ P^PYOMEA, B., Pal. Foss,, vol. i, p. I03.-Challoupe River ; Div. 4, P. LATUSCuiA, B., op. cit., p. 104.-Walls Cove, East Point, and the Jumpers ; Div- '?, 3, 4, A. G. ' Genus Zaphrentis, Rafinesque. Z. patens, B., Can. Nat. Geol., [2,] vol. ii, p. 430.-The spc n.r is broken off at nine lines below the margin of the cup. Diameter .? the ower extremity, twenty-one lines, and of the cup at the margin, thirtv- hree lines. It thus expands, in this part, one inch in a length of nine lines. It may have been more cylindrical below. In the cup there are ' This species appears to be congeneric with Hyrinsophyllum organum-Sarcinula or,anunu Should this view turn out to be correct, then the generic name muT f course, be changed. ' 34 thirty-six lar«o septa nearly three lines apart at the margin. Between these are thirty-six smaller ones, which are scarcely half a lino in hoight, and have their edges serrated with small donticulations about three in one' line. There is a deep septal fossette on one side. Surface and lower parts unknown. Cormorant Point ; Div. :5, A. G. J. Richardson. Z. AFFiNis, B., op. cit., p. 430.— Wreck Point and White Cliff- Div 1, A. G. Also in II. R. Z. Stokesi, Edwards & IIaime.--The Jumpers ; Div. 4, A. G. Z. BELLISTRIATA, B., op. cit., p. 430., ante, p.— Numerous localities in Div. 1, 2, A. G. Also in II. R. Genus Cyathopuyllum, Goldfuss. C. Waiilenbergi, B., Pal. Foss., vol. i, p. 108.— East Point; Div. 3, A. G. C. PELAGicuM, B., op. cit., p. 108.— Becsie River Bay ; Div. 2, A. G. C. Anticostiense, B., op. cit., p. 109.— South-west Point • Div 4 A. G. . ' • *. C. EuRYONE, B., op. cit., p. 110.— The Jumpers ; Div. 4, A. G. Genus Ptychopiiyllum, Edwards and Ilaimc. P. Canadense, B., op. cit. p. 107.— South-west Point, Div. 4, A. G. Ganus StrOxMboues, Schweigger. S. diffluens, Edwards and Haime.— South-west Point ; Div. 4, A. G. Genus Betricea, Billings. B. UNDULATA, B. Rep. 1857, p. 344.-Gamache Bay ; Div. 1, A. G. Abundant in numerous localities on the north and west coasts' of the island ; H. R. ECHINODERMATA. Crinoidal remains occur throughout, but very abundantly in Div. 4. They are always in fragments, and none have been found sufficiently perfect to afford the means of determining even the genus. POLYZOA. Genus Ptilodictya, Lonsdale. P. FRAGiLis, B., (ante p. 9.)— Junction Cliff; Div. 1, A. G. P. excellens, n. sp.— Polyzoary consisting of small flattened, two- edged branches which are gently and uniformly convex along the middle 86 for two-tl,W» of Iho «,alh and somowhat flat along ll,o od™» Cv . Ob o„«-„vate. t:,o side, usually ,t„u,l,t and tho onda very .uJw.nM w I *o„gly olovatod lino, botwoon tbo row, ; ,ix or .oven cd , " lit':, ::„r' ^''-'''r-"™ -' *° '™ -p"™ - -j*"- a "« h!, i, , ... ""' '" ■"""""'• '"" '"P^ratod about ono-fourth tl,o.r own length from each otber ; the interveiing ,p„c„ with llZll pus. On eaeh side of the branehe, the,, U a r^w'of c \ ie| a"! larger and n,ore nearly circuk; than the others. The most ll! ! 8pee,men eolleeted ia 18 lines U length and U linea In w^r It i tS branched at an an^^o of about 35o. ^^^ Jl7 ""'I ;r^''''"' "^^'""'''^'^ '^'''''^'' '^ i^i« «P««i«« i« the pitted Btructure of the space which intervenes between the ends of the ^c s A small portion along the edge is often smooth and the edge itse usua^T; acute. I occjxrs at East Point, two mileseast of Jupiter RiveC amachc Bay, and the Jumpers ; Divs. 1, 2, 3, 4, A. G. J. Richardson. P. SULCATA, n. sp.-Polyzoary elongate, flattened, sides gently and umformly convex with moderately sharp edges. Cells broad-ovafe or neariy s are about e.ght m the length of one line and nine or ten in the same s^t n;vidth their ends separated by a simple wall only ; a fine sumetLes flex.^us impressed line or minute furrrow runs along the crest of t^e wal which ser.rate the longitudinal rows. When the^specimens are slijht spec cs. Ihe largest observed is 2 inches in length and 2 lines in its greatest wulth at a point where there are 20 longitudinal rows of cells. Anotl^r IS 18 hnes m length and 2 J lines in its greatest width whore there are 22 rows of cells. In this latter specimen many of the cells have a small wall-hke projection or imperfect septum extending from the side the end, or one of the angles, obliquely nearly to the centre. Rarely there are two of these septa m a cell. This species in its simple unbranched and curved form closely resembles J^. ffadtola, but the cells are more nearly square and the branches not angular along the middle. The sulcus between the rows of cells is a char- acter not observed in P. gladiola. The Jumpers; Div. 4 A G J RicJiardson. ? • . «. P. SUBERBA.— Polyzoary consisting of large fronds, sometimes three or tour inches m length and one or two inches in width. Cells ovate, about eight m the length of one line and ten in the same space in width In some parts of the frond they are arranged in longitudinal rows, but else- where irregularly disposed. In the rows the cells are not in contact at their extremities but separated by one or two small pits as in P excellens 86 Wall's Covo and Becsio Rivor Bay ; Dlv. 1, A. G. J. Rifliunlson, T. C. Weston. P.iiuSTiCA,n.sp. — Polyzoary consisting of small flattened, brandling fronds with the sides gently and uniformly convex. Cells ovate, with a slightly elevated margin and a fine raised Mne between the rows, three or four in the length of one lino and about six in the same space in width. When tho surface is worn the margins of the cells and the lines between the rows totally disappear. The specimen examined is Vi lines in lengili and li lines hi its greatest width where thtre are c-ght rows of cells. It gives cfi" three branches at an angle of about 45°. The Jumpers ; Div. 4, A. G. J, Richardson. P. TENEK/V, n. sp. — Polyzoary consisting of narrow flattened branching fronds with tho sides gently and uniformly convex. Colls ovate with a thin elevated margin ; an obscure elevated flexuous hno between each two rows. There are about five cells in the length of one line and eight in tho same space in width. The edges of the fronds are moderately acute. The length of the cells is about one-third greater than their width. In perfectly preserved specimens the surface between the cells seems to be minutely tuberculated. Tho fronds are, in general, a little over one line in width with about ten rows of cells. Point Laframboise and Gamache Bay ; Div. 1, A. G. J. Richardson. P. ARGUTA, n. sp. — Polyzoary of narrow, branching rather strongly convex fronds, ^^lls oblong-ovate, about four in tho length of one line and eight or nine in the same space in widtii. One specimen is nearly a line wide with eight rows of cells ; another half a line with four rows. Cape Sand Top Bay ; Div. 2, A. G. J. Richardson. P. ALCYONE, n. sp. — The polyzoary of this species resembles that of P. ruatioa, but differs in having the cells more nearly circular find smaller, there being, on an average, ten or eleven in the length of two lines. Two miks west of Chicotte River ; Div. 4, A. G. J. Richardson. Genus Helopora, Hall. " Simple or branching cylLdrical stems, often swelling at the upper ex- tremity, poriferous on all sides ; pores oval or subangular, arranged between longitudinal elevated lines." (Pal. N. Y., v. 2, p. 44). Some of the following species do not come exactly within the above de- scription, but as there are intermediate connecting forms I do not think it necessary to institute a new generic group for their reception. Eichwald places these fossils in Vincularia, apparently without sufficient reason. H. LiNEATA, n. sp. — Polyzoary apparently hexagonal, 'ess than half a line in thickness and rarely an inch in length, sometimes branched, the branches 37 as largo as tho main atom. Colls ovate, „nif„™ly romulod al hoV „J« thoir length about ono-half greater than their »i,itl,TT . , , ' margin all ronnd, arrango.l in Btraig" Z rn !i '..^ „ "f,"'"'?'' tl.0 sti|,e ; tho ro>v« se,,arated l,y a fine, lo, ,o„ finL!^"" T "f.?" "'' a .listinot groove on ea'el, side between ^the e I Zt " ' ' '"" of tho latter in tho length of one lino. ' ''™ "• """" The surface occupied l.y each row of cells is flat, and conseauentJv ,!,„ arc as many sides to tho stipe as there are rows L, ill? ^ "' which tho above descript l f^nnM iUo—'lt TSl T" tuey aro all fixed to the rock the precise number cannot bo Z T "'' certainty. Thero are numorous'small sp" ^nrl „ 7"'" ^ * ot or, on the same slabs so.e of which I Je cerll^o ly Zr "Sl^ others appear to have five. None of then, are sulHcientIv Jrfe!. 7 . w ,er they possess the lines between tho rowsTce^irt o sts" Tho least wearing removes these characters, and I cannot „, J , de whether they should be referred to this r o no or m 1 ^ ces. Junction Cliff; Div. 1, A. G. .T. Ilichardson °' '^'^ H. FOHMOSA. — Polyzoary about ono-fifth of n linn ;« +k- i than an inch in length! appLntly four si C , l! te:r ,"' ends narrowly rounded ; length ebout twice the widt , an elevZ ' ■"■ at the sides wh^ch docs not seem to go ronnd thrends ei^ht? ! '^^T length of two lines. There are fotr rows se a ted ^ ' e™ i',"!" ndgewh a groove on each side, and with foSr or Ave taberc" , 'Z H. CONG A VA -Polyzoary apparently four-sided from one-sixth to nn. brd of a hne m thickness. Cells elongate ovate, most ZTLlZ a the loAver extremity, the bottom gradually risln^ to th.,, '''''^^'^*^^ whieh is seareely distinct from the genera stfe!" Tht ?'7 "T" to eight cells in t.vo lines The an-des of T f ' ^'""^ ^^" olfK.T"7vX~^°'r'"'^ ™b-p„lygonaI, from ono*„rth to one-half of a hne ■„ thickness, less than an inch in length, branched. Cells ovate length abant o„e-th,rd greater than their width, arran-ed in Ion tul l' rows w. I, a , .„, „,„.,„,„ „.„„, .^ „^^^^.^_^ ' obsolet atX ™' or at both ends of the coll, but almost always well developed at o.-T thereof The distance of the cells from each other vaSflm Ti f a hne. Length of the ceils about i of a line. There .:ppear te be four f. D 88 five rows of cells. Surface longitudinally striated. Where the stem gives off a branch the latter is sometimes at its base, cylindrical, destitute of cells and strongly striated for the leni^th of about one line. Junction Cliff, Anticosti ; Div. 1, A. G. J. Ricluirdson. H. NODOSA. — Polyzoary rudely cylindrical ; cells elongate ovate, one end rounded and deeply impressed, the other pointed or minutely truncated and scarcely distinct from the surface ; an elevated tubercle between each two cells which appears to have often a rounded pit in its apex. This gives to the stems a nodose appearance. There arc three or four cells in the length of one line, and they seem to be arranged in five or six longitudinal rows. Two miles east of Jupiter River and at East River ; Divis. 2, 3, A. G. J. Richardson. H. LiNEOPORA. — Polyzoary cylindrical, sometimes branched, about one-third of a line in thickness and from three to eight lines in length, the surface covered with minute extremely elongated cells which are most deeply impressed at their lower extremities. Under the microscope the surface appears to be simply striatted longitudinally and without cells ; but on further examination what appear to be strife are in fact the cells. This species might perhaps form the type of a new genus. Two miles east of Jupiter River ; Div. 3. A. G. J. Richardson. H. ARMA'i A. — Polyzoary from one-fourth to one-third of a line in thick- ness. Cells sub-ovate with a strongly projecting broad based spine at the lower edge. Thk spine appears to be concave on the upper side where it receives the cell, and convex on the lower side. There appear to be four or five longitudinal rows of the cells, and they also sometimes form transverse bands ai'ound the stem ; in other instances those of contiguous rows alternate with each other. On a side vicAV the spines arc triangular in outline, the upper side projecting cither straight outwards at a right angle or curving slightly upwards ; the lower side sloping downwards from the point of the spine witli a concave descent which extends half way to the cell next below. There are about three cells in the length of one line, and they arc distant rather more than their own length from each other. The surface of the stem is longitudhially striated. East Point, Anticosti ; Div. 2, A. G. J. Richardson. H. BELLULA.— ^Polyzoary consisting of small, straight, cylindrical stems of nearly uniform thickness, but usually tapering slightly from the upper to the lower extremity, celluliferous all round. Cells elliptical ; the pro- portional length and width somoAvhat variable, the latter usually one-fourth less than the former ; the margin, at the sides, thin and distinctly elevated ; a spine or tubcicle at the lower end which has the form of a small four- sided pyramid, the upper side often at right angles, and sometimes sloping m 39 a liltle upwards, so as to bring tho apex over the o<.\] Ti •■ usually arranged in longitudinal rows'run,", g I e Se I™,,'; T stem, sometimes separated throughout, often h, nta ' '" where the eells of eontiguous ro Jalternate Z ^1,XZ""T a distinct oblique transverse arrangement the eell? . "^ '' "'"' rhomboidal (Jthough tliey are noUo' wL„ ,1 "'''"'™"« '" " from eaeh otL there is a ^listinc^t.^riLir I'^o t Tlr, TT but no elevated line as there is in a". «„„«,.! Vvlnri '" oontaet laterally the groove is broken up into a seres of stll "'V'' or rhomboidal pits, the former oeenrrin- in eases Z.l, ""°"'"'' and the latter where they touel, eaeh otl,: 1 1 e . e ^,r"! *;:'^'» ox^om,ty is usually striated for the distance of half alf and : Z temunate m an obtuse point. Tho .pper extremity is i„ go ,en,l a Ztlt truncated; specmens ,vith this part rounded sonfetimes o mtrk ft u not eertam that such is the natural form. When the cell,, , crowded together they become irregularly poC," 1 TI !" ,r f "' to eight cells in the length of one Hue, a" f^J! ,d,t^X2 fr"' Length from two to ten lines, the shorter specimenrblgev, ,7 -j most instances, fragments; diamtter from half to two-tW,.,K r East Point, two miles east of Jupiter Eiver Son.l P V ' ''""• localities on the south and east si^drof'^Articlti ; ot' f ■r"^«""7 Richardson. ' ' ■^^- ^- J- J^'/'Vr'^'T'^'' °"'^ 'P™™"" <'°"««'«'. of this specie, is n cyhndrieal branched polyzoary seven lines in length and h ilt' n-Ii;, in diameter In the lower half there are a few widely separate erhei euar cells about onctenth of a line in width each.^vitr^f it , i'.d v el " vatcd marg^. The remainder of the surface iswi hout ce 1 1, , ," with fine somewhat irregular longitudinal stri,e. Four miles we. ,. ' S , West Point, Anticosti ; Div. 3, A. G. J. Kichai,l«,. """' H. imm.ULARrs.--Poly.oary irregularly cylindrical branched with occasionally, some bulbous enlargement.,. Cells »ul,-eireul I , twenty-fifth of a line in diameter »d their own wij s , 1 i ? "'T other, t„e ,„.argiu obscurely sali,... The stems an S "L "f' one to three hncs in diameter, and have a superficial re.se 11 ,,, . ',' specime„sof^'.«^„™y„™„. Challoupe iivers, Ant^: ' 3 A H. CiiiOE.--Polyzoary cjlindrical, l.rancl.e.l, I.oHoav. Colls snh.oy.^to . , canon is t! irce liucH in len-rJi : it is a 1 sp i-ly 10 in il liivcr, Anticosti ; Div. 3, A. (J. J. l{\d i ''ranclied fra^^Mnont. Two miles ard Sun. laiiietor and castofJujjitor 40 H. VARIPORA. — Polyzoary cylindrical, branched, hollow. Cells polygonal or circular, varying greatly in size in the same stem ; usually those of the maximum size most numerous ; the smaller ones in the angles between the larger. This species difters from H. Circe in never having the cells ovate. The stems are from half-a line to three lines in diameter, and there are from seven to ten cells in the length of one hne. It ranges through Div- isions 1, 2 and 3 ; Anticosti Group, and occurs at Junction Cliff, East Point, two miles east of Jupiter River and other localities on the south and east side of the Island ; Divs. 1, 2, 3, A. G. J. Richardson. Genus Lingula, Brugiere. L. INSULARIS, n. sp.- -Sub-pentagonal or sub-ovate ; greatest width about the mid-length, thence uniformly tapering with a gently convex slope to the beak ; about two-thirds of the front margin straight ; anterior angles narrowly rounded ; thence gradually widening to the mid-length. Both valves are rather tvongly convex, most gibbous about the middle ; the anterior half with a flat slope to the front margin. Surface with fine concentric strife. Length 6i lines ; width at the mid-length 5 lines ; depth of both valves in the middle 24 lines. A single specimen only was collected, and that is somewhat imperfect. White Cliff, Gamache Bay, Anticosti ; Divs. 1, A. G. T. C. Weston. L. QUADRATA, Eichwald.— Junction Cliff ; Div. 1, A. G. Also Charleton Point and English Head; H. R. L. FoRBEPr, B., Pal. Foss., vol. i, p. 115. — Junction Cliff; Div. 1, A. G. Also at Enghsh Head ; H. R. Genus Strophomena, Rafinesque. S. RiioMBOiDALis, Wahlenberg.— Occurs at numerous localities on the South and East coasts of the island throughout Divs. 1, 2, 3, 4, A. G. S. ALTiaiNATA, Conrad.— A variety of tliis spec' s occurs throughout Divs. 1, 2, 3, 4, A. G. Also in H. R. S. PECTEN, Linn. — Occurs throughout Divs. 1, 2, 3, 4, A. G. S. Ceres, B., Pal. Foss., vol. 1, p. 119.— A variety of this species oc- curs at Gamache Bay and other localities in Div. 1, 2, A. G. Tlvc typical form occurs at r'harleton Point ; II. R. S. Leda, B., op. cit., p. 129.— East Point ; 3 A. G. S. Philomela, B., op cit., p. 122. — East Point, S. W. Point and the Jump or 3-- Div. 8. 4, A. G. S. Julia, B., op. cit., p. 127.— The Jumpers ; Div. 4, A. G. G 41 S. ANTIQUATA, Sowerbj.-Prinsta Bay and East Point ;-Divg. 2, 3, A. S. PLANUMBONA, Hall.-Ju. ^tion CJiff; Div. 1, A. G. Also in H. R. Genus Leptaena, Dalman. S. SERiCEA, Sowerby,-Very abundant and in a fine state of preser- vation at Gamaehe Bay ; Div. 1, \ G Also nt mm. i ,?l^^^^ the underlying H. R. ' ° ""' ™'^'"' ^'''^''''' ^" L TRANsvERS^Lis, Dalman.-Four miles west of Jupiter River, East Point and the Jumpers ; Div. 2, 3, 4, A. G. Genus Orthis, Dalman. 0. PORCATA, McCoy.— Abundant at Gamaehe Bav ; Div. 1 A G This species also abounds in the Trenton limestone at the City of Ottawa. 0. Davidsoni, Do Verneuil.-Abundant at the Jumpers and other loca- hties in Div. 4, A. G. 0. LYNX, Eichwald.-Abundant at Gamaehe Bay ; Div. 1, A. G. Also m H. R. ^_0. Laurentina, B., Rep. 1857, p. 297._Abundant at Gamaehe Bay; 0. Maria, B., Pal Foss., vol. i, p. 137.-Gamache Bay ; Div. 1, A. G. 0. PARVA ? Pander.-A species agreeing very nearly with the figures and descriptions of Do Verneuil, Pal. Russ., occurs at Junction Cliff Uamache Bay, the Jumpers and other localities in Divs. 1,4. 0. MEDIA, Shaler.-The following is Mr. Shaler's description of this species. Bui. M. C. Z., p. 65. " Shell orbicular ; hinge-line one half less than width of shell. Toothed valve evenly convex ; depth, in adult specimens about one fourth the iieight, m young specimens proportionately a little greater; umbo sli-ditlv elevated, rising above the hinge line one eighth the distance from beak to border, slightly compressed, occupying at the hinge-line about one fourth the diameter of the valve ; beak small, distinct, slightly recurved, a little overhanging the area ; area small, rather broad. Fissure trian^nilar one third as wide as length of hinge-line. Socket valve transver.-lyllatte'ned a slight mesial depression dividing the surface into two lobations. " Difiers from its European representatives, being more orbicular, having 3S8 projecting umbo, less incurvation of bonk-, much finer radial stride loser approximation of the brachial supports of the socket-value, and less length ot the adductor impressions in the same valve." 1 1 42 This species occurs at SoutL Point, S. W. Point and the Jumpers ; Div. 3, 4, A. G. It is probably only a variety of 0. elegantula. 0. UBERis, B.= cequivalva, Shaler, op. cit., p. 56. —I propose to change the name given by Mr. Shaler to this species as it is equivalent to cequivalvis, already applied by both Davidson and Hall to other forms of the genus. The following is the description in the work cited. " Shell somewhat lenticular ; one fifth wider than from beak to border ; valves nearly equal in convexity ; toothed valve a little the most prominent ; hinge-line rather more than half the width of the shell. Toothed valve strongly evenly convex, a little depressed opposite the umbo ; umbo rising above the hinge-line about one sixth the distance from beak to border, a little laterally compressed ; beak minute, scarcely projecting beyond the hinge-line, a little recurved ; area about twice as wide as that of socket valve ; width one-sixth of length ; steeply sloping ; most convex point of valve a little nearer the beak than border. Socket-valve nearly evenly convex ; very slight mesial depression, extending from the umbo to the centre of 'valve, where it fades out, and in succeeded by a slight ridge, which extends to the border, beak distinct ; not rising as far above the hmge-linge as that of opposite valve by the width of socket-valve area. Surface with fine dichotomous strise with interspaces as wide as the ridges." Mr. Shaler, at the commencement of his description, says " (^Si/n. Orthis hybrida, Billings.) " ^ cannot, however, discover in what publication I have designated this fossil by that name. It is most abundant at Junction Clifi'but it occurs throughout Divs. 1, 2, 3, 4, A. G. 0. RHYNCHONELLiFORMis, Shaler, op. cit., p. 66. — This is a variety of 0. uheris with a short hinge-line and with a mesial sinus in the ventral valve of some of the individuals. It occurs most abundant at Gull Cape ; Div. 2 : more rarely 1 mile east of Jupiter Kiver, Div. 3 ; The Jumpers, Div. 4, A. G. 0. RuiDA, n. sp. — Shell sub-lenticular, both valves moderately and nearly equally convex : hinge-line a little less than the whole width ; sides and anterior angles irregularly rounded ; front with a portion in the mid- dle somewhat straight. Ventral valve with a strong broadly convex fold along the middle dying out on the umbo ; on each side of the fold nearly flat ; umbo small ; area moderate, forming an obtuse angle with the plane of the lateral margin. Dorsal valve with a deep sub-angular sinus which tapers to a point at the beak ; on each side of the sinus moderately con- vex ; cardinal angles compx'essed ; area small. Sui'face with small, rough, sub-angular ribs, several times divided before reaching the front ; four or jl. 43 five in two lines at the margin. There appear to be concentric stri^ Z^1:lZt.r::^'r-'::'^\ LengthSUnes; width 10 Div. 1,A.G. T. lines ; depth of both valves 4 hnes. Gamache Bav C. Weston. ^ Genus Orthisina, D'Orbigny. 0. Verneuili, Eichwald.-Gamache Bay ; Div. 1, A. G. Also in several Jocahties m the Trenton hmestone in Canada West. Genus Rhynchonella, Fischer. R. QLACiALis, B., op. cit., p. 143.-Gull Cape ; Div. 2, A. G. R. FRiNGiLLA,B., op. cit., p. 141.~GulI Cape ; Div. 2, A. G. <,fr?' t^^t^: "• 'P-f '^,^-^^^*«' apical angles about 80° ; sides somewhat stra ght m the upper half, rounded in the lower half; about one-half of the front margm truncated or nearly straight. Ventral valve moderately convex ; smus deep and concave at the front, one-third the whole width dymg out near the umbo ; sides of the sinus with one or two prominent ribs from which there is a somewhat flat slope to the margin ; umbo prom- ment but narrow ; beak elevated about half-a line above the hinge and moderately incurved ; there appears to be a circular foramen beneath it Dorsal valve more uniformly convex than the ventral ; mesial fold dying out at about two-thirds the length. There are four angular ribs on the fold and three on the sinus ; from six to eight on each side or from sixteen to twenty m all on each valve. Length 6 or 7 lines ; greatest width about the This species differs from E. Antieostimsis in having the beak more incurved. Gamache Bay -, Div. 1, A. G. T. C. Weston! R. NUTRix n. sp.-With the exception of the beak and a slight conca- vity m the front margin the outline of this shell, on a dorsal view is nearly a perfect ellipse. In other respects it does not differ to any impor- r;rrri trc. ^z' '-' -^'^ « ""- «-'^^ R ? ARGENTEA, D. sp.-Shell transversely ovate or sub-globular, nropor- tiona length and breadth variable. Ventral valve strongfy conv x, most elevated about the middle; beak, apparently closely incurved ;;rsil sinus about one-third the whole width, dying outat the mid-length, Abruptly elevating the margm of the opposite valve. Dorsal valve rather more strongy convex than the ventral ; a narrow groove extending from the umbo towards the front most probably connected with an internal mesial septum ; mesial fold short but strondv elevated. ovf^nHin^ ahovt haF^he length. Surface with numerous small ribs or, rather, stri^ which appelr to bifurcate, three or four in the width of one line. Shell, in exfoliated 44 specimens, of a greyish silvery lustre like that of Atrypa reticularis. Only two specimens were collected. The largest of these is 7 lines in width and 6 lines in length ; depth of both valves 6 Unes. The other is 5 lines in length and .5^ in width ; depth of both valves 4 lines. From the peculiar character of the shell I am inclined to think that this is not a true Rhynchonella. Challoupe Rivers ; Div. 4, A. G. J. Richardson. R. '^'< i iHA. — Shell ovate or nearly circular ; width usually a little grea- ter thau uie length. Ventral valve ratlier strongly convex, most prominent at one-third the length from the beak ; mesial sinus deep at the front mar- gin and usually flat in the bottom, dying out on the umbo ; the latter with a concave slope on each side to the cardinal angles and margin ; beak small incurved but not in contact. Dorsal valve more uniformly convex than the ventral, a prominent mesinl fold which becomes a sulcus on the umbo. There are about twenty ribs of which there are usually four in the mesial sinus. Width 5 or 6 lines ; length a little less. One mile east of Otter River; Div. 2, A. G. J. Richardson. R. vlciNA, n. sp. — Shell ovate ; sides in the anterior two-thirds uni- formly rounded ; above which they are somewhat straight and meet at the beak at an angle of 110° ; front margin somewhat concave at the sinus. Ventral valve moderately convex, most prominent at the upper third, some- what flattened or concave on each side of the umbo ; the latter modci te ; beak small rather closely incurved ; sinus concave, dying out on the umbo. Dorsal valve moderately convex, the fold distinct but not abruptly elevated, dying out at the upper third. There are twelve strong angular ribs on the ventral valve, two of which, with a smaller one on the left side, are in the sinus. The same number on the dorsal valve, three of them on the fold. Length 6 lines ; width 7 lines. South-west Point ; Div. 4, A. G. J. Richardson. A single specimen only was collected. R. Eva. — Shell small, ovate ; sides and front margin rounded ; apical angle variable, from 90° to 120°. Ventral valve strongly convex along the middle ; beak closely incurved : the sinus slightly developed. Along the median line there are usually three strong ribs, diverging towards the front, one of these in the sinus ; outside of these three there are four or five smaller ones in each side. Dorsal valve somewhat broadly convex, a faint miesial sinus on the umbo which towards the front becomes a slightly elev- ated mesial fold with two strong ribs. In very perfect specimens, the front part is marked with fine zig-zag stride. Length about 3 lines ; Avidth usually a little greater than the length. East Point ; Div. 3, A. G. J. Richardson. R. MICA, n. sp. — Shell small,transversely ovate or sub-circular. Ventral valve strongly convex, uniformly arched from beak to front, dichotomously 45 carinated along the middle, somewhat concave towards the sides; umbo laterally compressed ; beak small, strongly incurved over the umbo of the dorsal va ve but apparently not in contact therewith. There is a small smus m this valve with a prominent ridge on each side which produces a doubly cannated aspect. The dorsal valve is more broadly and uniformly convex than the ventral with a shallow sinus, in the middle of which is a narrc.-- mesial fold Surface with from twenty totwenty-ave small obscure radiating nbs which occur also on the carinae of the ventral valve and the smal fold m the sinus of the dorsal valve. Length about 3 lines ; width about 3i hues. This species is evidently congeneric mthE? recurvirostra, Hall. lheJumpers;Div. 4,A. G. J. llichardson. Genus Camerella, Billings. C. iiEymM,^Fentamerus veversus, B. Rep. 1857, p. 295.-Junction Uitt ; Div. 1, A. G. 0. Ops, B., Pal. Foss., vol. i, p. 148.— The Jumpers ; Div. 4, A. G. C LBNTicuLARis, n. sp.-Shell ov"te, lenticular, both valves about equally convex ; sides and front rounded ; greatest width a little above the mid-length ; beaks about equal, closely incurved. On one valve there is an obscure mesial fold and on the other a sinus. Most of the specimens have a few obscure ribs half a line wide, but these are sometimes so slight- ly developed that the shell seems to have an even surface all over with the exception of the fold and sinus which are always more or less conspicuous. When the surface is very perfectly preserved fine concentric stria, oxe visi- ble. Width of a specimen of the ordinary size 9 lines ; len^Hh 8 lin^-s • depth of both valves 4 lines. Reef Point ; Div. 1, A. G. J. Richard- son. This species differs from 0. reversa in its regularly lenticular form and less gibbosity. It appears in the same group of strata, but at a higher level. ^ Genus Pentamerus, Sowerby. P. Barrandei, B., Rep. 1857, p. 296.-Becscie River Bay ; Div 2 A. G. ^ ' ) P. OBLONGUS, Sowerby.— South-west Point, South Point, Cormorant Point, East Point and the Jumpers ; Divs. 3, 4, A. G. Genus Stricklandinia, Billings. S. LF->o, Sowerby.— East of Jupiter River, South-west Point and The Jumpers ; Divs. 3, 4, A. G. S. lirata, Sowerby.— East Point, South-west Point, Heath Point and The Jumpers ; Divs. 3, 4, A. G. 46 S. BRBVis, B., Can. Nat. Geol. vol. iv, p. 135.— South-west Point; Div. 4, A. G. Genus Atrypa, Dalman. A. RETICULARIS, Linn.— Occurs throughout the Anticosti Group, but most abundant at South Point. A. MARGiNALis, Dalman. — The specimens are in general more rotund and wider on tne hinge line than those from Wenlock. Junction Cliff; Div. 1,A. G. Genus Zygospira, Hall. Z. paupera, n. sp.— Shell small, ovate, width' greater than the length ; sides nearly uniformly rounded ; front margin gently convex or with a por- tion in the middle sometimes slightly concave, straight, or gently projeciing. Ventral valve convex, regularly arched from beak to front, concave towards the cardinal angles and sides ; beak small, closely incurved. Dorsal valve gently convex with a very wide concave mesial sinus dying out near the umbo • . impressed at the cardinal angles. Surface with about twenty-five small angular ribs. Width 4 lines ; length 3 lines. Near Jupiter River ; Div. 3, A. G. J. Eichardson. This species closely resembles Z. lifodcsta, the type of the genus, but is smaller. Genus Athyris, McCoy. A. UMBONATA, B., Pal. Foss., vol. i, p. 144. Junction Cliff; Div. 1, A. G. A. Prinstana, B., op. cit., p. 145.— Prinsta Bay : Div. 1, A. G. A. Julia, B., op. cit., p. 146. The Jumpers ; Div. 4, A. G. A. JuNiA, n. sp. — Shell small, orbiculo-pentagonal, both valves convex, width almost equal to the length. The sides in the rostral third are nearly straight and converge to form an angle at the apex of about 100° degrees; in the middle third rounded; in the lower third somewhat straight and converging to the mesial fold ; the ventral margin straight in the median third or for the width of the fold and sinus. Ventral valve ra- ther strongly convex, uniformly arched from beak to front : umbo mode- rate ; beak small, closely incurved over the umbo of the dorsal valve ; me- sial sinus deep and concave ; at the front margin about one-third the whole width, dying out near the umbo ; bounded on each side by a strong rounded fold, outside of which an obscure sinus nearly as wide. Dorsal valve less convex than the ventral ; umbo moderate ; beak buried under that of the ventral valve ; a strong mesial fold narrowly rounded along its crest with a deep sub angular sinus on each side, all dying out a little above the mid- length. Surface apparently smooth but in some specimens exhibiting 47 concentric lines under a magnifier. Length and width about 4 lines bix miles east of Otter River, near Jupiter River and the Jumpers ; Divs. 2, 3, 4. J, Richardson. This species is somewhat simUar in form to A. congesta, Conrad which abounds in the Clinton formation in New York, but differs there- from m having the mesial fold and sinus shorter. 'A TUMiDULA, n. sp.-Sub-orbicular; width slightly greater than the length ; apical angle about 105« ; aides nearly straight for a little over one third the length from the umbo, rounded in the middle third and to- wards the front margin ; the latter with a broadly convex lobe Ventral valve rather strongly convex, nearly uniformly arched from beak to front the most abrupt curve bemg above the middle ; umbo moderate ; beak sma 1, incurved down to the umbo of the opposite valve ; front margin produced into a curved rounded linguiform lobe from each side of which a famt, barely perceptible depression runs towards the beak, the space be- tween them with about the average convexity of the valve. Dorsal valve less convex than the ventral, sub-carinate along the middle, sloping to the sides ; mesial fold at the front nearly one-third the whole width, strongly elevated, rounded along the crest, becoming obscure or so httle developed , above the mid-length as to produce only an obtuse median carination ; on each side of the fold a faint rounded sinus outside of which the shell has a somewhat flat slope to the sides ; umbo moderate , beak curved beneath that of the opposite valve. The hinge line of this valve is nearly straight for more than half the whole width. When the shell is a httle exfoliated there can be seen on each side of the umbo two darl :ne3 radiating from the beak indicating a pair of short septa. Surface smooth. Length of large specimen 9 lines; width 10 lines. Near Jupiter River and four miles west of South-west Point ; Div. 3, A. G. J. Pichardson This species resembles A. tumida, Dahnan, but is smaller, more angu- ar along the middle, the hinge line of the dorsal valve straighter, and has two short septa radiating from the beak instead of one. A. LARA, n. sp.— Shell lenticular, sub-pentagonal or sub-ovate, greatr est width a httle above the middle where it is equal to or a Uttle more or less than the length ; apical angle usually about 120^ ; sides straight or gently concave from the beak to the cardinal angles, rounded in the mid- dle third; somewhat straight and converging in the lower half; the front margin straight or gently convex in the middle. Both valves are mode- rately and about equally convex; umbo and beak of ventral valve small the latter closely incurved; umbo of dorsal valve distinct but not promi' nent, beak buried; hinge-line in most snecimens sfr^.r^T^+Jai, ., n. sp.-This species is about the size and shape of C .n,./«^;w>th the difference that the umbones are very strong caril nated. Iho postenor portion of the shell is broken off, and the entire out- line cannot, therefore, be made nut. One mile south of Junction Cliff Anticosti ; Div. 1, A. G. T. C. Weston. ^' Genus Ambonychia, Hall. Fig. 16. Fig. IG.^Ambon^ehia superba. Right valve and anterior view. 50 A, 8DPERHA, n. sp. — Shell largo, strongly vcntricosc, sub-corJiform. Anterior and posterior sides gently convex and sub-parallel. Ventral margin uniformly rounded. Hinge line etiual to the whole length of the shell, nearly ; posterior wing moderately prominent; angle formed by the hinge line and the posterior side about lOO*' ; anterior wing rudimentary. The beaks, as shown in the cast, arc scarcely incurved. There is a well- developed area, between them, which extcnc' ';he whole icnajth of the hinge line. Height from the middle of the ventral margin to the beaks, 3 inches ; length 2^ inches ; depth of both valves about 2 inches. Junction Cliflf ; Div. 1, A. G. T. C. Weston. A. UADiATA, Hall. — Occurs abundantly at Gamache Bay ; Div. 1, A. G. Also in the H. R. A N'^TIDA, n. sp. — Shell elongate, ovate, rather strongly convex ; beaks small, terminal, closely incurved. On the anterior side the outline for a short d'stance from the beaks is nearly straight, slightly concave, then gradually rounded to the somewhat pointed ventral extremity. Beneath the beaks there is an obscure lunette with a minute rudiment of an anterior wing. Hinge-line short, straight, forming an angle of about i5° with the longitudinal axis of the shell ; a very narrow area. Posterior margin slightly compressed, gradually and somewhat irregularly curved to the ventral angle. The greatest convexity of the shell lies along a straight line from the beak to the ventral angle. Surface with obscure concentric striae which are impressed on the cast of the interior. Length 15 lines ; width 9 lines ; depth of both valves 8 lines. One-fourth of a mile east of Jupiter River ; Div. 3, A. G. Fig. 17. Fig. 17. — AmhonyeMa nitida. a, anterior view ; 6, right valve. Genus Pterinea, G Idfuss. P. varistriata, n. sp, — Obliquely senii-elliptical or sub-rhomboidal hinge line long and straight forming an .ingle of about 45" with the body of the shell ; anterior wing short, rounded with a faint sinus at about one- 61 rounded backward, along tho ventral margin to .:„ |„„r posterior ando *oh « somewhat narrowly ,. dod. The posterior wing is largo a„d r^^uch compressed; the angle about -.o. Mow which the o„Ie Jb slightly concave fo.- about one-third the height and then convex totne lower postcrjor angle. The beaks appear t, be rather Z M- ncurvo, and s.tu.tod about one-flfth of the whole length Ho tng Ime from he a„ten.r angle. The lef valvo is obliquely and rather strZiv convex, the body of the shell (or the convex portion excludinTtewnS » rrow^ The, nght valve is moderately convex and in one speLon n ariy fla. Surface of eft valve with fine radiating stride, about two in '„e me, crossed r finer s„b-lamcllo,e concentric stri« There ar Z meconce-, - undulations of growth. Surface of right value with etrng concen, ., concave unaulatics of growth about oneL STeac and perhaps a so ..diating stri«, but the apecimons do not show any „f hat they would not bo regarded as belonging to the same species uS. .n place. One specimen free from the matrix and with the valves in connection was coUectcd. Gamache Bay ; Div. 1, A. 0. T. C. Wela P. COEIOSA, n. sp.-Thc specimen on which this species is founded has both valves m comiection and is perfectly detiu^hed fL the mite but h ^ not certain that the whole of the margin is preserved so tlm'fdta ng descnption may not give the true outline of the perfect shell n ictvalveis rather strongly convex .ith a moderately cCessdlterio wing Hmge Ime straight, six lines in length ; beak of left vlTsmri pointed, mcirvod over the ar,a and situated nearly two linenremThe anionor extremity of the area; the latter apparenUy concave onflL height at the beak That part of the shell'^ldch ifes be o" ; ne raw',": across two lines below the area is a triangle of which tho two lower sMe are gentiy convex and nacet to form an obtuse rounded angl Tf a noo. ihis angle ,s situated a httie in front of a line drawn vertrcallv valve. Above the hno (drawn across the shell) the anterior extremilv lopes towards the beak; the posterior extremity rounded trehw! hne Distance from the middle of the area of the ,ight valve to the 3. on the ventral margin nearly seven lines ; width of tie she Ion a ineTw "rit;f:^r,i:;f "^=' '""*^ ^-^"^'^-^« ~^e , The rigbf valve is gently convex. The shell aDDear,. fn ^. .».„ ...v ana wiih hue concentric strijje ir Z) n^^ the left valve wliich on approaching the 52 hinge line behind the beak show a gentle curve convex towards the anterior side. From the direction in which these striw reach the cardinal edge it would appear that the shell, when, perfect has a distinctly angular, not rounded, posterior wing. Near Jupiter River in the lower part of Div. 3, A. G. J. Richardson. Fig. 18. Fig. 18. — Pterinea curiosa. a, view of the right valve showing the area of the right ; b, anterior view. P. SUBPLANA, Hall. — A species which is either identical with or closely allied to this occurs at Point Laframboise ; Div. 1, A. G. P. TmsBE, n. sp. — Right valve with the hinge line long and straight, equal to the whole length of the shell ; posterior margin forming nearly a right angle Avith the hinge line and nearly straight (slightly concave) Tor a little more than half the width, then broadly rounded into the ventral margin ; anteri extremity short, tlio outline obliquely rounded into the ventral margin liich is broadly and gently convex. The body of the shell is moderately convex with the usual obliquity. The wing compressed. Beak small close to he anterior end. Left valve rather strongly convex. Surface with very obscure radiating ribs, three or four in two lines. Length of right valve on hinge line 9 lines ; height from the mid-length of hinge line to ventral margin 7 lines. Only two specimens were collected, one right and one left valve, the latter very imperfect. Challoupe River ; Div. 4, A. G. J. Richardson. The left valve of this species has very nearly the same form as P. undata, Hail, as figured by Winciiell and Marcy in the " Memoirs of the Bosi;. Nat. Hist. Soc. Vol. 1, pi. 3, f. 2. It is however more oblique anteriorly and not so nearly square. Genus IscnYiiiNiA, Billings (ante p. 16.) I. WiNCiiELLi. B.— Junction Cliif ; Div. I, A. G. Also in H. R. I. PLICATA, n. sp, — Cast of the interior transversely ovate, moderately convex ; anterior extremity in the upper fourth straight, and forming a slightly obtuse angle with the hinge line, below rounded ; ventral margin broadly and uniformly convex, gradually rounded from the mid-length i:p to the postoi'ioi" oxtrcmitv whicli is acute and has its most proi' ctiu2 v^uit about one-fourth the heiiiht below the hiuuie line ; above this p'».\nt ob- lino. Lencrtli 8 lines • hei.rlif o+ fV,« • 1 1 ""-, .''^'^^ ^icle of the hmge- ™. specie, has the form of a CleMoptrus' but' t '"• pa,ra of flares induce, „„ to .Ii,po,eTtT'above °""™"" ""''" Genus Conocardium, Bronn. to .he hase of the siph:'. Jt ; Ti;::^^!^::^'-^'^ twe^efi„o,t™™„j„,f.„„.,*:ij:3 ;«^^^^^^ beaks a strong rounded i-id-rp mn^ f^ +i . , ine margin, i^rcm the posterior fro.^he terio^ Zity ThTs ' 1 '"''\'"' "^^^'^"^ *^- crest and has its posterior el^ Led t1°:;:^ minutely striated transversely ThTl,- ^ "'"'''^^ '"'"• ^*^« oblique cone .ith its ^tJtX::JX7L]''^^^^^^ minutely striated, the stri^ running up the eon pL Z ?""""' ' the hinge-line downwards the eonto^'url ^e^iew j^, t" ^"' a.-ed tnangle, the apex, slightly truncated, bei r; Ve t ,' ^^ 'T an end view the outline is perfectly cordiforn t!Z f ^ '' ^" to the ventral angle a littl] more i^Zs ■ ^ ^Z '" ^^^'^^^^ apparently about 2i lines ; depth of both .Zl 3 ht^s '" '"^^'^"^^ " i3,bowever,much^;riiwer;:i^:;j^'j^;^ only be seen with a glass magnifying 80 diaLt 7 The 'V "'' the extremities are just visible to tLe naked cto ''^""^' ''' South-west Point; Div. 4, A. G. J. Richardson. GASTEROPODxV. Genus 8riu;LiTJ5s, Conrad. S. Elongata, Conrad. () in IL R. Qcin-i lit Gamuchc Bay ; Div. 1, A. G. Also 54 S. NOTATUS, n. sp. — Shell small consisting of four depressed convex whorls of which the last equals the apical three in length. The outline is strongly curved on the posterior side (or side opposite the aperture). Apical angle about 45°. The shell is mostly all removed from the speci- men, but on the cast there is a concave band on all the whorls just above and close to the suture. This is so distinctly marked as to induce the belief that it is not an individual peculiarity. Length of the specimen 16 lines ; length of body Avhorl 8 lines ; width of the same 7 lines. Junction Cliff; Div. 1, A. G. J. Richardson. Genus Pleurotomaria, Defrance, Fig. 19. Fig. 19.— Pleurotomaria Si/billina, Side view ; a, the band enlarged. P. Sydillina, n. sp.— Shell conical ; apical angle about 70° ; whorls four or five, moderately convex. The whorls are angular vcntricose ; on the upper side gently convex with an obscui'e carina half way between the suture and the margin. On the upper side of the margin there is a narrow band which appears to be convex with an elevated line above and another below it. Below the band the side of the body whorl is nearly vertical for about one-fourth its height then convexly rounded into the umbilicus. Sur- face covered with fine sharp striie which curve backwards to the band ; about eight striae in the width of one line. On the underside of the body whorl of one specimen there is a set of distinct revolving strine crossing the others at right angles and forming a minute square reticulation. Junction Cliff; Div. 1, A. G. T. C. Weston. ' Associated with the above there are specimens without the carina on the upper side of the body whorl although it is seen obscurely on the smaller ones. P. CRYi'TATA, n. sp. — Cast of the interior very depressed conical, con- sisthig of thi'cc rather slender whorls which have a rounded quadrate section, tlie upper lower and outer sides of the whorls being depressed convex. The second whorl rises about half its height above the first ; the apical whorl minute. The umbilicus is about one-third the whole width. In one specimen the Avhorls are more vcntricose, the section being nearly circular. Width 7 lines ; height oh lines ; diameter of body whorl near the aperture 2:1 lines. Near Challoupe Kiver; Div. 3, A. G., J. Richardson. 65 Genus Mbbchisonia, Do Verneuil ct D'Arctiac M. oroAKT«, B., Eep. 18S7, p. 298.-Pri„rta Bay; Di. 1, A G M. TERETIFORMIS, B., OR cit n 9Q« n„ u t. M. v^ ™roos., HalL-Ga^ache Bay; Div. 1, A. G. Also b H. R M. t™„ic„^, B., op, oit., p. 301. _The J„™po.s ; m,. 4, A. G ' M. PAPii,.osA, B., op. cit., p. 301._Gamache Bay ; Div 1 AG revolving s«r^eju:;:::Di::rAt*"' °" ™ '"^"'"--^ .__ M. ™oosA, B., op. oit., p. 299.-Ga.ache Bay ; Div. 1, A. G. Also Genus Loxonema, Phillips. Genus Cyclonema, Hall. 4^^t:l:^]t^^'lr'''""""^^^ ^.<.^-<..-Ga.ache C. Peiicingulata, B., od cit n qni a .u . ^ . A. G. ' P" '^^^•—South-west Point ; Div. 4, C. VARiANS, B., op. cit., p. 305.-South-west Point ; Div 4 AG whorls projoctin. o To ne. tl ' !? ' *^' ^""' °"*^^ '''^' '' '^^ 56 height, more gently convex towards tl suture. Surface with fine strioo which curve backwards from the suture doAtnwards, crossed by fine revol- ving lines barely invisible on the upper side of the whorl but very distinct near the umbilicus. The latter not visible in the specimens examined, but probably very small. Apical angle 65° ; height 5 lines ; width of body whorl 4 lines ; height of the same 4 lines. Differs from C. eaneellata, Hall, in being more ventricose in the Lower half of the whorls. The Jum- pers ; Div. 4, A. G. J. Richardson. C. iiUMiLis, n sp. — Shell small with a large oblique body whorl, which constitutes nearly the whole bulk; the apical whorl minute; whorls ventricose, most convex towards the base. Surface Avith fine transverse and revolving striae. Height about five lines ; width of body whorl from the outer lip through to the opposite side six lines. Resembles 0. obso- leta, Hall, but is distinctly cancellated. The Jumpers ; Div. 4, A. G. J. Richardson. C. MEDiocRis, n. sp. — Shell small, consisting of four rather slender and uniformly ventricose whorls ; the apical three of which aro ve»-y small, but considerably elevated. Surface of the cast of the interior with oblique obscure undulations; surface of shell unknown. Height six lines; width from the cuter lip through to the opposite side six lines ; diam- eter of the aperture, which is nearly circular, three lines. There appears to be a small umbilicus in this species almost half a line wide. It was collected four miles west of South-Avest Point ; Div. 3, A. G. J. Richardson. C. D0CORA. n. sp.— Shell conical, consisting of about four uniformly ventricose whorls ; umbilicus one-fifth the whole width ; aperture nearly circular. Surface covered with strong revolving striiE, of which there are four or five in the width of one line ; height about 8 lines, width li lines ; diameter of the aperture four lines. This species resembles the last, but differs in having the upper whorls propiiftionately larger. It seems probable also, thpt the strine, on account of their strength, would bo visible on the cast of the interior, but none can be made out on the specimen on which C. mediocris is founded. South-west Point ; Div. 4, A. G. J. Richardson. Genus Belleropiign, Montfort. B. BiLOBATUS, Sowerby. — Gamache Bay ; Div. 1, A. G. Also in II. R. B. ACUTUS, Sowerby. — Gamache Bay ; Div. 1, A. G. B. Canadensis, B., ante, p. 18.— Cape Sand-Top Bay ; Div. 1, A. G. Also in II. R. B. DILATATUS ?, Sowcrby. — The Jumpers ; Div. 4, A. G. 57 Genu3 Ptekctheca, Sailor. P. TRANSVERSA, Salter.-Gamachc Bay ; Div. 1, A. G. Al=„ i„ H. R. CEPHALOPODA. ^ 0. Canadense, Ii.,Kcp. 185T, p. S21.-South-«st Point; Div. 4, ^ 0^ PERsrPnoKAi™, B.,op. cit., p. 329.-Cormorant Point;. Div. 8, 0. BooKLANDii, B.,op. cit., p. 820.-Soutl.wc8t Point; Div. 4 A G 0. UAPTO.., n,p -Section circular; septa moderately convev ' sW to one .rcl, where the di.an,ctor is fifteen lino., ; siphundo ccnLl or near! v so moml.form, ,l,c segments three lines in diameter ,vl,cre the Ilthrf^t,; 1 .s e,«hteen linos. Outer clnambor and surface n^nt ,' pee, mens arc not perfect, but seem to taper at a rate of about te li^^ n two rnches. The segments c." the siphunclo are uniformly ronnLd the sides and flat at each end, the whole rcsemblin-- a line o7 « 1 -ply fiattcued a little by being pressed against eae°otlel„,,; .X One spocuuen was collected one mile cast of Otter Kivcr anl alZ: each ho, ;b • '"'IT ™"""' "™«'^ "••"""'• ''' "'- Ji^'™' from each other where the diamater of the shell is thirtv I;,,,.,- .i.i , largo, apparently a httlo exccntric, infl.atcd bcttc 1 c;! c s'e mens beurg ,n the form of spheres compressed at bo, „d £ spee,men ,ss,x inches in length, thirty lines fn diameter at c ^l "d her ,sc. rhe s.phuncle ,s exposed on one side the whole Icu-th. Its d amcter .s twelve Imes throughout. The segments are uniforml/rounded on then- s,des not more inflated on the apical side than they Ir ZT, ant nor s.dc, but snnply a line of spheres compressed longi.udi, 1 Lt 0.rai.tor. South-west Point ; Div. 4, A. G. J. Bich.ardson ^ O I.VFELIX, n sp.-Ihis species is founded on portio.isof two siphunclcs The first rs twenty-seven lines in length ; twelve lines in diameter TZ larger and o.ght Unes at the smaller extremity; and consists o t n nm- eighteen hncs n, length, eleven linos in diameter at the lar-cr and etl ritf'rr^'r™""''"''" ^"™" -=-"''»'■ '>-re.:t e r,ea;;;: „V :i™'r' '""T^ ^ "»'™'f»™.bo«" ^..ecime,! smlhn end t f, ;'"''.»a»o,.ed only in the four segments at the smallu end. South-west Pomt, Div. 4, A G. J. llichardron. 58 0. BELLATULUM, n. sp. — Shell apparently below the medium size, very gradually tapering ; section circular or very nearly so ; septa about eight to the inch, where the diameter is eleven lines ; surface longitudinally sulcated with narrow concave grooves and covered wH'h minute transverse and longitudinal striae which are equally distinct both in the grooves, and on the ridges between them, about twenty sti'ioe in one line. The casts of the interior of the chamber of habitation exhibit a broad shallow concave constriction close to the aperture. Siphuncle unknown. The best preserved specimen consists of the chamber of habitation and the last four septa. Length 30 lines ; diameter at the aperture 12 lines ; at the fourth septum, where broken off 11 lines ; width of the constriction near the aperture 7 lines ; depth of the same i of a line. There are about 50 longitudinal sulci of nearly equal width, the average being five sulci in three lines or thereabout. The fou" septa occupy 6J lines in the length of the fossil ; the chamber of habitation 24 lines. The section is not quite circular, but broad ovate apparently owing to pressure. The second specimen is 41 lines in length with nine septa and the chamber of habitation, which latter is 21 lines in length ; width of the constriction 6 lines ; depth J of a line ; space occupied by the nine septa 16 lines. As the specimen is distorted by pressure the diameter cannot be made out exactly, but it appears to be about 12J lines at the aperture, and 10 lines at the ninth septum, thus tapering at the rate of one line to the inch. There are 34 sulci, but as the shell is not preserved the surface markings cannot be determined. This specimen differs from the former in having wider sulci and consequently fewer of them, but in other respects appears to be specifically identical. It is possible that this may be 0. virigatum, Sowerby, now referred to 0. ane median C 7Z ventral aspect ; section ovate, the dorso-ventral diameter bearing the Z portion of 9 to 7 to that of the lateral diameter. Surface unknown ' The best preserved spccmen has the following dimensions very noarlv • dmmeters at the aperture 7 to 6J linos ; at the last septum 9 toiTi- at the tenth septum 4 to 3 linos ; depth of chamber of habitation 7 line '■ ength on the ventral aspect occupied by the last five septa 7 lines. Zm of about 1 2 hues ; thence towards the apex more gradually Judging from a number of broken and distorted specime'i s some of th,. rrr rjt:sr^'^°"°"-"«™'"*'- <^-^^:^ Genus Oncoceras, Hall. FUTILE, n sp.-Shell fusiform, graduallj expanding from the aper- ture to the last chamber, and then.taporing towards the apex. EioJ't septa m the length of one inch. Siphuncle unknown. Width of the best p°lr^^^^^^^ pecimen at the aperture 9 lines ; width at the last septum 14 Tine at he e,g,th septum 9J lines; depth of chamber of habitatL 11 lin Ea! of Jupiter Kiver; Div. 3, A. G. J. Kichardson. AMATOR, n sp.-Length of the specimen 12 lines ; lateral diameter at the aperture 8 hnes ; dorso-ventral diameter about 7 lines ; diamet" ! he smaller extremity 3J lines. Surface cancellated with Ion atuXal and transverse stri.. Of the former there is a set sufficiently st nl o e "n obscurely flute aspect ; the space between each two of fhese is^Med b^ a smal er hne a ong the middle ; on each side are others still smalle and more obscure The transverse markings are, also, of several sizo.^XLcle and septa unknown. South-west Point ; Div. 4, A. G. j; Richardson Genus Ascoceras, Barrande. A. Newcerryi, J3., Pal. Foss. vol. i, p. 164, fie 148a nn. ii«;i Junction Clift; Div. 1, A. G. Also in H. 11. ^* ' ^^^*- \U 60 A. Anttcostiense, n. sp. = A. Newberryi, pars, loc. cit., fig. 1485. Junction CliflF; Div. 1, A. G. Genus Glossoceras, Barrande. G. DESIDERATUM, n. sp. — This species is founded upon a fragment con- sisting of two of the lateral chambers and the impression of about two inches in length of the body of the shell. The form appears to be elongate sub-cylindrical, section, about the middle, broad ovate, the dorso-ventral diameter greater than the lateral ; the lattc, in this individual, fourteen lines. The inner side of the chambers is gently concave, the lower edge broadly rounded, the upper edge concave. The outer side is convex con- forming to the form of the shell. Length of the upper of the two chambers on the inner side nine lines in length and twelve lines in width ; the lower ten lines in length and eleven in width. The specimen is so imperfect that it should not perhaps be named, but as there is a prospect of further collections from its locality it is probable that materials will soon be forth- coming to comj^lete the description. South-west Point ; Div. 4, A. G. J. Richardson. CRUSTACEA. Genus Asaphus, Brongniart. A. MEGISTOS, Locke. — Gamachc Bay ; Div. 1, / G. Also in H. R. A. NOTANS, B., ante, p. 25. — Gamache Bay; Div. 1, A. G. Also Genus Ill^nus, Dalman. in H. R. I. ORBiCAUDATUS, B., Can. Nat. Geol.,vol. iv, p. 379 — Gamache Bay, near Jupiter River and South-west Point ; Divs. 1, 2, 3, 4, A. G. Also in H. R. I. (iHANDis, B. op. cit., p. 380. — Gamache Bay ; Div. 1, and South- west Point, Div. 4, A. G. Most probably it occurs throughout the series. It abounds in the H. R. Genus Calymene, Brongniart. CBlumexbachi, Brongniart. — Occurs at Gamache Bay, Jupiter River, and numerous localities throughout the series. Genus Cheirurus, Beyrich. C. INSIOENS, Beyrich. — South-west Point ; Div. 4, A. G. C. NUPERUS, n. sp. — Glabella oblong, rounded in front, sides straight, and apparently parallel ; three glabellar furrows on each side extending inwards about one-third tl\c v,'idth ; surface minutely granulose-tubercular ; length 4 lines ; width near the front 3 lines. t: S' s; a A at 61 tw2^'' rT '''*5 ''"" '''^' '"^ ^'"° «^* «P^"«« ^i'-^^ted backwards, be- tween wluch are four very short oncn. It scorns to consist of three seCen he first or antenor of which has its pleur. extended backwards to orm ones. Mst 1 oint ; Div. 8, A. G. J. Richardson. «o? Fig. 20. frorwhl';";h?r'^^^^^^^^^^^^ Glabella and pygidiun.. The specimens trom wh ch these two figures were taken are on the same piece of stone withm SIX „.ches of each other and there seems, thus, to be t le doub that they belong to tlie same individual. _^ a P^EUREXANTHEMUS, Green.-.Junction Cliff; Div. 1, A. G. Also Genus Phacops, Emmrich. P. Orestes, B., op. cit., vol. iv, p. G5.-East Point: Div 3 A G Occurs also on the Chatte River in Gaspe in the same 1.0^^0^ Genus Dalmantes, Emmricli. D. MACROURA ?, Angelin.— Junction Cliff; Div 1 A R Tl,„ „ ■ rather smaller and close to the glabella a,'..! the pytulfun, sW to7 „d species. II e Enghsh form is intermeciiate between the Swedish and Cana dian. Salter, ,n the "Memoirs of the Geo Surv O R"! jT «ame the former B. affi„s, but now thintsTtiln'i ca ' wth ^ ZZl ' It ma^ be that a Ithese will yet be elassifled as three distin t Tuerely alhed speces. In that ease ours might be called i). A»tico.tie"^i Thl arrangement would then be D. macroum, An-'elin CSwcdisb' n !;« Salter (English) ■,J>. AmUo.tiensU, Bil'lings CanS' I^' the tZ the latter the vertical rows of lenses arc the most conspicuous, the oblique series not benig perceptible without close examination, [n the Sw Ih r;rveS2ut^*' '"^ ""'^™ "-«-' =» *-°-^^ Genus encrinurus, Emmrich. E. multisegmentatus, Portlock.-Junction Cliff; Div. 1, A G E^ PU.XCTATUS, Wahlenberg.-East Point and the Jumper's ; Div 3 4 ft'tbat ^~ '-'' '''' ^^^ '-'''^^ ^'^ -^'^^ — occur togetU Salter.—" British Trilobites," Pal. Soc, 18G4, p. 37. 62 E. ELEOANTULUS, n. sp. — Glabella clavato, uniformly and moderately convex ; front broadly rounded ; sides nearly straiglt or f^ently concave, separated from the cheeks by a deep but narrow j^roove ; three very short but deep j^labellar furrows on each side ; neck furrow all across ; surface covered Avith small rounded tubercles about one-sixth of a line in diameter and a little less than their width distant from each other. All other parts of the head unknown. The glabellar lobes have the appearance of three round tubercles on each side. The first pair of furrows are situated on a line drawn across the glabella at one-third the length from the front mar- gin, and are rather obscure. The two others are about equidistant from each other. The last pair of lobes have their posterior edges nearly in contact with the neck furrow. Pygidium triangular, strongly convex in front ; axis elongate acutely conical, depressed convex ; twenty four seg- ments, of which the first eight or nine extend all across the others, represen- ted by elongated pits on each side. In the sides there are five pairs of pleura;. The first pair take- cheir origin at the first segment of the axis, and extending outwards at right angles, nearly, for a distance ecjual to half the width of the axis curve downwards and backwards until their ex- tremities are about opposite the mid-length of the pygidium. The second pair seem to spring from the second segment of the axis and curve backwards from the side of the axis itself. The th'rd pair originnto from the fourth segment of the axis ; the fourth pair from the sixth, and the fifth pair from the eight or ninth. The latter are nearly parallel with the sides of the axis, being only slightly curved outwards ; towards the apex of the axis they converge and nearly unite behind it, and arc continued as two short sharp spines giving the aspect of a double caudal mucro. The fourth pair terminate about opposite the end of the axis, but arc not spinose at their extremities. The others almost their own width in advance of each other. There are no tubercles on either the axis or side lobes. Between the fifth rib and the side of the axis there is a narrow smooth space with a faint groove on the inside ; it extends round the apex of the axis and seems to be the rudiment of a sixth pair of ribs. Close to the very point of the axis there is a small pit in the smooth border. Length of glabella, excluding the neck furrow and segment, 3 lines ; width at the anterior corners 3J ; Avidth at the neck furrow 2 lines. Length of pygidium, measured along the median line of the axis, but exclu- ding the spines, 5 lines ; width measured across at the termination of the first pair of ribs 4 Anea ; height at the first segment of the axis 2 lines. Only two specimens, one of the pygidium and the other a glabella, both on the same piece of stone within an inch of each other and almost certainly belonging to the so me undividual, were collected. The species is evidently allied to those figured by McCoy imder the names of Zc^^us atraciopyge 63 The al.„™ description, it will l.o understood, m it i, founded on a sinde Oonus SwiAERocoRYpnE, Angolin. S. Sameui, n 8p.-Glal,ella »ub-gl„I,ular, ao n,„ch i„flate,l that its convex .des overhang the hase all round; neck furrow rath rllr-e with a tuherelo u, , on each side, within and close to the dorsal furrow"; neck esment w,th ,ts margin ahruptly elevated, tho surface sloping I wards mo the furrow ; a deep concave groove run, outwards close to t^o poster o sho?:: '"s"" -wf t ""I- ""■"" ""-■' '» '-« .'-u-Tr shoi t spraes. Tho w.dth of the nock segment is about one-fourth less than e gre,.est width of the glahella, The dorsal furrows arc ^1^ Z t" cave. Iho front part of the glabella is, in all the spechnens that have been exammed imbedded in the matrix, and it cannot t er for b determmed whether or not it overhangs the margin. From the smal tuterele ,„ the neck furrow on each side, a low rounded ridge runsTu" wards across the neck furrow. Length of the head 2i lines; length of the glabella two lines; width of the neck fumw half a line. These are the dimensions of the large specimen Another very small specimen gives the following. Length of the head 11 hues; length of glabella one Une ; length of the nostorior margu, of the head from the dorsal furrow to the outer angle on Ine This species is undoubtedly congeneric with Staur,eepMu> umcu>, Thompson, as 6gured by S.,Iter«. It differs in having the glabella more un.form ly globular, and in the characters of the neck. In .V. », 2 dose undo,, the haseof the glabella behind, there is a rounded groo"::! neck , then a rounded ndge with a tubercle at each end on tho sides of he nock ; behind this is the true nock furrow. In this species the ubercles arc not connected by a ridge, but on. their outsides a rid-e runs to the cheeks. ° It is more closely allied to ^. ^ran^./ate, Angelin, differing therefrom only, so far as can be made out from the figures, in being much mor. finely ubercled on the surface, and in the neck furro'-.s more, deeply excavated. • ^"^ fV, ^I-aT 'P'^T'"' ""''" ^'""^^' ^'''' "^ ^^'^^«h "-^^ ^^^^^ "oticed, but the third shows nothmg but the upper part of the convex glaloila. The " Salted, " British Trilolites," pi. VII, figs. 22, 24. " ~ G4 surface of all is covered with small closely crowded tubercles just visible to the naked eye. Junction Cliflf ; Div. 1, A. G. J. Richardson, T. C. Weston. Genus Haiu'KS Goldfuss. H. CONSUETUS, n. sp. — This species is of the ordinary form of the genus. Contour of the head including the border and spine ovate, broadly and uniformly rounded in front, gently convex along the sides, and narrowing slightly backwards from a line downwards at the neck furrows to the extremities of the spines. The border is gently concave, with an abruptly elevated wire-like marginal rim all round. All that part which lies in front of the neck segment is not (piite a perfect semicircle. The body of the head is moderately convex ; glabella rather small, regularly conical ; dorsal furrows deep along the sides, rather shallow round the front ; neck furrow all across ; an obscurely developed pair of lobes at the neck furrow ; the depression on each side in front of the neck furrow sma'u. The eyes are small and situated on a line drawn across the glabella at a little less than one-third its length from the apex, and at about one-third the width of the glabella from the dorsal furrow. Surface unknown. Length from the front margin to a line drawn across the tips of the spine, twelve lines ; length of the head six lines ; width at the neck segment, ten lines ; length of the glabella, three lines ; width of the same at the base, two lines ; width of the border of the head, two lines. The specimen consists of a mould of the head from which good gutta perc'i:. casts have been obtained, giving the whole form very nearly. This species is closely allied to //. Ottaivaensis, but is narrower, the head not so convex, and the depressed space on each side of the base of the glabella smaller. South-west point ; Div. 4, A. G. J. Richardson. Genus SPHiEREXOcnus, Beyrich. Fig. 21. Fig. 21. — Sphcerexoclms Canadensis. S. Canadensis, n. sp. — Glabella convex, abruptly elevated in front,de- pressed convex in the central region- In a view looking down vertically on the upper side the contour is br jad ovate, the anterior half uniformly rounded, the postei'ior nargin somewhat straight in the middle, the poste- rior corners rounded ; greatest width at the posterior third ; length a little 66 IC8S than Iho wkUI,. The po,torior glabellar furrows have their inn.r ex- rem,t,e, about oue-third of the whole width in from the outer „,»"" and soared, one-tlurd t e length from the posterior margin. The/ „r e » lightly forwanl and outwar,l, and are distinctly impressed down the .■des the glabella to .he dorsal furrows. There is a s'e cond pair ™ . rows „t..at„d ess than ene-third the length in front of the pest'Ir pair ■ 'hey are shorter and not so distinet. Neek furrow narrow and raU '; deeply sunk ; neek segment also narrow and well defined. Surfaeo „v nffc:rl,r """'J;!" " ""'"-'""""-""berele. tJ^^^^nZ one-tourth of a lire m diameter at the base, and usually their own diameter r: r^r "" i-r "" r °'""" "-"^ «« '°™'"»- ~r„ Zi; arZg In eertam cenditions of preservation these tubercles appear to have 1 aperture in the top, but this is aue to the vearing away of the c us. eT :;:'r fiC ^ V" r !;--'°"-'' -trif witif which tirtub: S 01 a line , width of neck segment, 1 line. Genus LicnAS, Dalman. Fig. 22. Fig. 22.— Lichas Canadensis. ThePygidium. hLoT^'T"' "• '^-^y^'^^^ n^'^rly flat with three pairs of broad which do ^,o, ""'*'"•,'-' "«*'-'l"fi""'i at'Iio Allies by the dorsal furrows ivhich do not run round the apex I ut are continued as a distinct groovo 00 gently curvinf^ inwards behind the axis and tlien slightly outwards, and terminating near the extremities of tlio inner pair of ribs ; tliree narrow- rounded rings cross the anterior half of the axis. The anterior inargiu is straight for a length of one-half the whole width, the outer angles broadly rounded backwards to the tips of the first pair of ribs which are situated on a lino drawn across at half the length. The form of the first pair of ribs is acutely sub-ovate, gently convex in the middle half of the lower side, broadly convex on the outer side ; a deep groove along the middle. A straight line drawn from the junction of one of these ribs to the outer extremity, forms with the median line of the pygidium an angle of about 50*. The second pair are grooved along the middle, the grooves forming with the median line an angle of about 80*^, the half of the rib in front of the groove sub-triangular, the posterior lialf Avith its anterior side (at the groove) nearly straight, gently convex, .he posterior side a nearly uniform depressed arch. The last pair of ribs are nearly parallel Avith the median line, irregularly triangular, anC. Avith a median groove Avhich does not ex- tend (piite to the tips. From the axis a Ioav convex ridge runs back to the notch betAvecn the last pair of ribs. As the specimen is partly imbedded in the matrix the margin cannot be entirely made out, but there are certainly two deep triangular notches on each side and apparently a central notch as deep as the others but not so wide in the median line. The Avhole surface is covered Avith minute rounded tubercles just visible to the naked eye ; a few larger ones scattered here and there, some of them one-fourth o^ i line wide. Length 14 lines ; greatest Avidth, at the tips of the first pair of ribs 21 lines ; length and width of the axis 4J lines. Associated Avith this specimen Avas found part of a head Avith a glabella very convex in front and Avith similar surface characters. Only the anterior part is preserved. There is a projecting flattish margin one line Avide round the front. East Point ; Div. 3, A. G. J. Richardson. Genus Bkonteus, Goldfuss. B. IN.SULARIS, n. sp. — Pygidium gently convex, semi-oval ; Avidth greater than the length in tne proportion of 5 to 4 ; axis obtusely conical or sub- triangular about one-third the length, its apex moderately Avell defined ; a single groove across at the anterior margin Avhcro the Avidth is nearly tAvice the length. There are sixteen radiating ribs, the anterior pair rather ob- sure. Tlic outline of the pygidium is uniformly curved all round and just within the margin there is u slight concavity. The ribs become obscure on reaching the edge. All of the axis behind the groove and the anterior margin is smooth. T^e'.gtu 4 lines ; Avidth 5 lines. South-Avcst Point j Div. 4, A. G. J. Richardson. C7 Genus DiONlDE, Barrande. B ? rEliPLKXA, n sp.-IIcad short, croscontiform. broadly and uniformlv rounM ... i,.„„t and backward, to tl,o tips of the spino, ; post IrlT-h deep y and nu.fo.mly concave. Tt= posterior angL of tho head aZr duced backwards and gradually taper to a point, £0 whole ha i" the form a perfect crescent The dorsal furrows are distant from d „ h™ Me more than ono-fourth the width of tho head on a lino drawn across at ho neck segment Thoy converge inwardly so that at the n ek Zv they are one-th.rd nearer than they are at the margin. Neck seamen rather large, strongly elevated at the margin and sfoping down Xfte neck furrow w, h rs angular in the bottom and has a d?ep „"t at eaeh ex romdy n, the do«al furrow. From eaeh of these pits a sli" y ilres ed hue runs forwards and may bo a continuation of the dorsafftlrX fron of he p,ts there is a pair of tubercles resembling glabella lobe ! ^ u^_= of t use another p,a,r of deep pits. The front of' the head is crushed m he eniy spee.mcn collected. Just outside of the tubercles abov m , tionod t^,ere ,s an elevated tubercle on each side, probably the bases o^e yes. Length of the he.ad from the neck segment to the fLt m^Z 11 3 hues ; length from the front margin to a line drawn across the tfns of the spmes, ,. hues; wKlth between the tips of the spines 8 hues; i Sat h e«.thesu,,osed^ onZ s%r "™" '° '" ™"'" '"'" '"^ ^^"^f "» «f ^ f« taberoles ceri!t!s',° T^ '';'™S '»;''""> "fter genus, but as it resembles (e,- re?::t;erist::t pit:'' f °" ' - '"-' «™p p-^^'»-'y -n Genus Beyriciiia, McCoy. as ti!!r ;!f!:™r'""""°" '"^ *"" ""^"""^ »f *= « » -.arded tubercle iu tho lower posteriui nn.! f '^ '^"'""^ ^^^^"^ ».... .ore than half' :^: ::t;::ri:zt^i tz 68 the hinge line nearly fiat with a sharp sulcus close to the margin. The posterior and lower sides of this tubercle rise abruptly from the edge of the valve. There is no sulcus along the margin in this part as there is in B. Klwdeni. The median tubercle is a strongly elevated angular ridge running from a point situated on the hinge line a little over one-fourth the length from the posterior angle, downwards nearly to the ventral mariiin. The anterior tubercle originates at a point situated on the hinge line a little more than one-third the length from the anterior angle. It has a wider base than the median tubercle, but is quite as angular along its crest. It is abruptly elevated at the hinge line, but declines in height towards the ven- tral margin just before reaching which it bends round and running along the margin unites with the posterior tubercle. In front ofit there is a deep round sulcus with a sharp elevated ridge outside of it on the very c'lge of the valve. This sulcus commences at the hinge line, and runs along the anterior margin and nearly half the length of the ventral margin when it terminates abruptly. The left valve is like the right, but in the only good specimen observed the posterior tubercle is more prominent. Length of the largest valve seen li lines ; width near the posterior extremity 1 line. East Point, The Jum- pers and other localities in Divs. 3, 4, A. G. J. Richardson. B. VENUSTA, n. sp. — Carapace valves semi-ovate ; width a little more thrn half the length ; posterior margin rounded, forming an obtuse angle with the hinge line ; ventral margin moderately convex ; anterior extre- mity somewhat narrower than the post.r. ,-, in the upper half straightish and nearly at right angles to «^he hinge line, below rounded into the ventral margin. There is an abruptly elevated rim all i-ound except on the hinge line and just within it a deep concave marginal sulcus which is partially interrupted abou' the mid-length by a low vertical ridge which is scarcely visible in some specimens. There are two large ridge like tubercles origin- ating at the hinge-line and extending two-thirds the svidth across when they converge and unite. Tliey arc separated by a deep conical sulcu?. Thei'e is a third obscurely developcu ridge just boliind the posterior tuberc'^s with which it unites below. The two principal tubercles div'de the hinge line into three nearly equal parts. When magnified thirty diameters the surface is seen to be covered with minute rounded pits in some specimens closely crowded together and in others separated, sometimes half their own width. Lengtli 1 line ; width about s of a line. East Point, Clialoupe River, the Jumpers and other j^laces; Divs. 3, 4, A. G. J. Richardson. Genus Leperditia, Roualt, L. Anticostiaxa, Jones. The original specimen was from East Point, but it occurs also at the Jumpers and other places in Divs. 3, 4, A. G. 69 INCERTiE SEDIS. In 1854 I collected in the Trenton Limestone it Offn^o obscurely prcorvod sub-gloWlar fossil H ,th ' " So .r^'r "' covered wM> an i„teg„„,o„t of s.=all p„,;«o„al .^ZZ'Z cZ , "" 0? ti.c „u» ^i,/,a,„,„fe, As there «re no' coin™™ at al, t™ — t::;;te'c^^^^^^^^^^ In isL Mr. RichariL^ttr;eatr ": r„;';r '■" '"" '"■""■'• theMiAllo Silurian rocks of Anticosti. ,ny roZ for 8-,'?^'"? '" both of these species without roferrin. tlom to a„v n T"'''" station. The following is the original /es ri^ on ^^"^ ' "" "*='""' " CLASS UNCERTAIN." **&mm Pasceolus." a fenng tlicrcfrom in the form of thrnhfo lit 3. l- ™^ 'f *"^' ^'""^ ^'^f" interior, which in this genus are ptta'^n lo,^ '^'' ''''^' «f the angular A specimen from iSkTi:" tl^^"!!^ "-teadof quad- m a tlun leather-like sack, and attached rthonff\™''l''^'"^'^''^««d contnmationofthis external coy S ^"^^^^^^^^ ^l^^rt tubular those of the Tummto." *= aftnities appear to be with " Pasceolus halli." the organ of attachment; o er intitZVH^'v ''^'^ ''^'''^' constitutes ered with small in-egular roS " S ^ o .'/*' ■'''^''''^^ «»^**^«« ^ov- visible to the naked eye ; it iSim et , in^'J *-;i ^" ^^ ""'^' ^''"^^'^y to the divisions botweL the plate L',f'^''^ wi indg^s corresponding The cast of the interior ^0^!^::^^^^^^ ^' ^- --1 ' divisions, presenting the ai.pearancis of A^ ir. ., '^'^^'^'ll' o^" pentagonal spaces are each about a quiln ^hne n i X^^^^^ ^^ f'^'^^^ ' ^h-e but increase in size above, until at the summ f "^ '•''''' ''^ *^^^ ^"'^^^1' The spaces are convex in their centits ^^ H "^ f' '"' I'''' ^" ^'^''^™«t'>^- •s fitted with concave depreslns Won^^^^^^^^^^^^ '^^''''' '''''' -^«='"n-t ^o^^^l:ZXTj:Z:^l^!:^^r''^ Pr-d ; it extends On one side of the cast t ere is a ml ^ 1 ?• '' 7" "' *'^^ ^^^'^ '^''»ve. th. top and bottom, whi iTiL a?s to n .,t:?''" v '''* j^altiwa/between the side of the animal. I b2 to cLdic2 Hi ^"'' •''" '^ ^"" ''^I'^^-^^"'^ ^^ Length of specimens one ich and ntlf ^'"^T?-"' to Professor Hall, die, thirteen lines. ''■^'^"' ^'-^'-^tcst diameter about the mid- ^i'l-:^^:^;^^''''''' ^--^- ^^^^ Middle Snunan 70 " Pasceolus qlobosus." " Beacrijition. — Sub-globular from one to two inches in diameter ; surface markings princiially hexagonal, and about t^vo lines in diameter. Locality (Old Formation. — Trenton limestone, City ot Ottawa, ■where it is found in certain (piarries in great numbers, usually flattened or pressed into a hemi.sj)herical shape. Collector.— E. Billings." In the Palicozoic Fossils, vol. i, p. 390, I have, in reconsidering the characters of the genus, stated that these fossils have " one or more circular apertures," but pointed out that in neither of the two species could they be clearly detected. Shortly after the publication of that •work, I was informed that Messrs. Vcrrill and Niles had read a paper on the subject before the Boston Natural History Society. This paper had escaped my attention, otherwise I should have alluded to the fact that they first noticed the affinity between Pasceolus and Cycloerinus. The following irn their remarks: — " Mr. A. E. Vorrill exhibited specimens o^ Pasceolus Ilalli Billings, * • which occur in the same formation with Beatricea at Ellis Bay, Antioosti. " This fossil was described by Mr. Billings as an Ascidian, but soi.ie of th«j specimens collected by the late ex])cdition from Cambridge showed that the exterior was formed by a shell of considerable thickness, com- posed of small hexagonal and pentagonal plates or prisms, having the outer surface marked with raised radiating lines. Moreover some of the specimens had tiie lateral openings well preserved, and surrounded by six })lates diftering in form from the rest. Mr. Verrill had, there- fore, considered it as a Cijatidean. It also agrees with other species of this group in form and appearance. " Mr. W. II. Nilcs, having recently made a moi'e complete study of this fossil, was invited by Mr. Verrill to express his opinion upon its relation to the other Cystideans. " Mr. Niles remarked that he had so far studied the specimens exhibited as to be convinced that Mr. Verrill was correct in his belief that they were true Cystideans. The syiccies had been described by BiUings under the name of Pasceolus Ilalli, but the genus had been previously described by Eichwald under the name of Cyclucrinites. The genus belongs to the family Sphceronitida;. " Mr. l)illings had not been alone in his belief that this family had Asci- dian alhnities.f M. Koenig considered the Cystidians as Ascidian Mollus- ca, and so far as regards this family, was supported by McCoy.* The fe:;-3 tnres mentioned by Mr. Verrill entirely preclude the idea of these fossil^ being the casts of the interior of Ascidians. The same kind of covering • Canadian Geological Survey. Report for 1853 — '5G, p. 342, I Mr. Niles is quite mistaken in sui)posing that I ever believed in the "Ascidian affi- nities" of the Spha>roniliil(E. I was the first to point out the occurrence of that family in the palieozoic roclts of America. I discovered and described tie genera Comarocijs- site<, Ainyi^dalocystitcs, and Midocystitcs. In all that I hyvu written on the subject I cannjt find a single remark from which it could be supposed that I ever entertained such an idea. more 71 of prominent irvesti-rators TTp tl.on ^^^t i i f f-'^ , ^^ *^^ theories tures ot the genus Cv'Iocrinito^ nro of fi ^^"^ '*""". ''f* "lat alj the fea- o,s,i,lia„, „,a »,atoV ,l,a oferas ; fnot Hrh ttr' T'"^''"'''/'"' family yd discovered in Ameiiea i L ,"d ;i,. ft ■ ■ ""'T/"""' »' «>« in the &„o.oie strata of Spe:" ° ' ^""^''^ " "■=" --^Fcsented After seeing the ahove, I wrote to Prof. A. Agassiz, and he kindly sent ..atmn. W.th all d„e deference, I do not feel at all convinced that the gans ■„ question are anything more than accidental arran.-ement te ph.tes In the true Cyslideans there is usually a small anfrtar ' on ,1 ™mm,t,v.th a larger one heIo,v. This latter, in'n,a„y s els s'pr id d ^v.th a valvular apparatus of five or six angular plates There f, „Tver n,ore than one of those large lateral openin-^s, (h, tl.o true X d"a.") but ,n one o the specimens from the museum at Camhridge thrann Ir to be four; ,„ another there are three. None of them hive a iZt me, the aspect of the ovarian pyramid, as it is calh.l, of tie ^L Cy j^ dans Wc have (m the Provincial collection) two specimens of Ji S w.th the summrts very well preserved, and they do not show any traces If or a™ "'" "" ' "'""'■ "° "^^ '=^"''" '^^ ^'8- °f ambulacral ;,ooves PasceolM, Sum is covered with a thin integment, about one-third of a • U r r?-,°' " "■"'"'''"°"' '-""'^ "*'"•• '■- -'fa- m nut iy ^>rn,kled but exhdutmg no traces externally of a division into plates R has not the pecuhar crystalline fracture of erinoidal plates. When tht negmnent.s removed from the fossil, as it is in the Cambridge sp c n en the whole of the surface of the coat of the interior is covered, wftl, maU polygonal spaces usually a little convex in the centre. Some i^d idlt are n>erusted w.th what appears to be a species of ..Z^:^'"^, Euss an specmrens are often over-grown in the same way, and EichwaU co„s,ders tins men.station to he a part of the integum nt itTel f he be correct ,n tlus new, then the structure of this genus is widely dtferent from that of any known eehlnoderm. It ma^ be that t et bodies are ak.„ to Salter's genus 7/W„»,.,,, supposed to be collecUo , of the eggs of some species of mollusea. In that ease the coral-like tub m,ght have exercised the function of small capsules for holding the e.!s tichwald seems to describe O^cbcrinm as having .an .nneriure irt',. summit i,. which case it must be a distinct genus from I^u.oeolu.. ul does not figure any specimen showing the orifice, and it is evident that he 72 never saw it distinctly. And although the genus is classified hy him among the Cystideans, ho says, " La structure do ce corps dnigmatiquo est en g(jndral trop pen connue, pour lui assigne la place qu'il doit occuper parrai les corps fossiles."* I do not assrrt positively that Pasceoliis is not a Cystidean, but think the evidence we possess is scarcely sufficient to authorize us to place it in that group. Spharonites tesselatus (Phillips) appears to be closely allied, but is now considered by Mr. Pengelly (sec Geologist), vol. iv,) to be a sponge. The following are the species of Paseeolus collected in Anticosti. P. Halli, B. — Gamache Bay ; Div. 1, A. G. P. GREGARius, U- sp. This species is smaller than P. IlalU, and is always globular or nearly so. The individuals arc from (5 to 12 lines in diameter, usually about 9 lines ; there are from thi-ee to four j)lates ? in the width of 2 lines. Reef Point ; Div. 1, A. G. J. Richardson, There arethe remains of about fifty in a small slab of limestone 5 inches in width and 7 inches in length. P. INTERMEDINS, n. sp. — Globular ; about 12 lines in diameter ; four concave plates ? in the width of 3 lines. Three miles west of Jupiter River ; Div. 2, A. G. J. Richardson. ADDITIONAL SPECIES FROM THE HUDSON RIVER GROUP. 11 Genus, Licropiiycus, Billings. L. FORMOSUS. — The specimen on which this species is founded has the main stem near the root (the latter not preserved) seven lines in thick- ness. In a length of three inches it is divided into eleven branches from three to four lines in thickness each. These are subdivided three or four times, the branches coming oft' at an acute angle. Several of the branches curve downwards. They appear to be, in some places, obscurely angular. English Head ; H. R. T. C. Weston. L. VAGANS. — Branches long, slender, cylindrical and somewhat crooked. A specimen springing from a single root is spread out to the width of nine inches ; length six inches. The branches are from two to three lines in thickness. Near the West-end lighthouse, II. R. T. C. Weston. L. ROBUSTUS. — T'vanches abo-,t one inch in thickness and from six to ♦ D'EiCHWALD, — Lttiiueti, Rossica vol. i, p. 640. 78 ten inches in length In one specimen there are five large branches with everal smaller ones between them. They are all in contact and all curved m the same dircclu.n. English Head ; H. R. J. Kichardson. Genus SiEiuciiNiTEs, N. G. The tracks, for which the above generic name is proposed, consist of wo parallo rows of sem.c.rcular or sub.juadrate pits, each pit about half an mch in diameter, usually a little more, and separated from the succeed- ing one about a quarter of an inch. They alternate with each other, uni- fonnly, in such a manner that the centre of each pit is opposite the pace between two pits m the other row. The pits are somewhat curved in ou^ hne on the outer margin, the anterior and posterior mar<.ins nearly straight; the bottom nearly flat, deeply impressed at the outer edge and becommg gradually more shallow to the inner edge where it runs out on the surface Ihere js a rounded ridge between the two rows of impressions ^7hich, however, is not elevated above the general surface. On one of those ridges an obscure median groove can be perceived. The foot ? bv which these impressions were made appears to have had a nearly flat bottom, or sole with the outer margin somewhat sharp edged. The depth of the pits at ho outer edge varies from one to six lines, usually about four lines. The width of the double rows of impressions varies from fifteen hncs to twenty-four lines. The length of the tracks from ten to eighteen inches. In general they are more abrupdy terminated and more deeply impressed at one extremity than at the other. That these impressions are the tracks of an animal no one, accustomed to the aspect of fossil remains, avIio examines them carefully can doubt To whatever class it may yet be referred it is evident that the creature ' had yery short or rudimentary organs of locomotion. A molluscous animal With a foot fla on the bottom, with the median line quite soft and the lateral edges of a gristly consistence could by alternately moving each side make such tracks as these. I do not think they are the trails of trilobites It IS more irrobable that some of the species of Cephalopoda which swarmed in he Silurian seas could crawl along and make foot-prints in the soft ooze of the bottom of the ocean. There appears to be but one speci :s for which the following name is proposed. S. ABRUPTUS, n. sp.-The specific characters are contained in the above generic description It occurs at Otter or Indian cove near English Head Mouiitain and Observation Bay i„ the samehori.on. H. R. J. Richardson Ihese tracks are so numerous that in some places scarcely a square yard of the surface of the stratum in which they occur is without them 74 LIST OF THE BRACHIOPODA FROM THE ISLAND OF ANTICOSTI NOTICEP BY MR. N. S. SHALER. (From Bulletin No. 4, M. C. Z.) Column S. gives Mr. Shaler's nomenclature ; B. the names adopted iu this work. S. Lingula elegantula " Forbesi Strophoraena semiovalis. " reticulata. " arciiata. " anticostiensis. " alteruiradiata. Brachy prion leda " ventrico3um. " gcniculatum. Lepttena Julia " quadrilatera., .. Plectambonites glabra " area " tenera Orthis Laurentina media anticostiensis sequivalva rhynchonelliformis. . " alata Platystrophia regularis . . . . Orthisina diversa Atrypa impressa " flabella Rhynconella fringilla " anticostiensis . " glacialis Biachymerus reversus Pentamerus Barrandii Athyris turgida. " uml)onata " prinstana " Julia Camerella Ops. Spirifer tenuistriatus II II II B. Lingula quadrata. " Forbesi. Strophomena alternata. " Leda. " Julia. " rbomboidalis. Leptaena sericea. " transversalia. II II Orthis Laurentina. " media, porcata. uberis. rhynchonelliformis. " Davidsoni. " lynx. Orthisina Verneuili. Atrypa reticularis. LeptoccDlia hemispherica. Rhynchonella fringilla. " Anticostiensis. " glacialis. Camerella reversa. Peutamerus Barrandi, Athyris umbonata. " Prinstana. " Julia. Camerella Ops. Spirifera plicatella. II II II m Of the fossils in the above list there are seven species which are not noticed in this work as I am unable to identify them. They are Stropho- mena semiovalis, S. reticulata, S. areuata, S. alterniradiata, Brachj- prion ventrieoswm, "3. geniculatam,Qxi^ Atliyris turgida. Mr. Shalerwas kind enough to send me specimens of most of -the others and thus I am enabled to state that he has, in the bulletin, correctly identified such species 76 noticed therein as were previously described by me. The wide difference between us is duo partly to the diversity of opinion as to the specific value of mmute characters which must always exist among naturalists and partly to the unsettled state of the generic nomenclature of the Brachio- poda. Such points can only be adjusted by the mutual concurrence of the majonty of paUxjontologists. I think that, at all events, some of the above specific names should be changed as they are pre-occupied by the follow- Lepiagonia semiovalis McCoy, Strophomena ventricosa, Hall S gemculata, \d.,S. armata, id., Orthis ceqmvahk Hall k Davidson 6 alata, Salter, Airi/pa impressa, Hall, Spirifer tenuHriatus, Hall'. General Ob«£iivaticn3 cn the Paleozoic Fossils of Anticosti. 1. Lower Silurian. In the Lower Silurian rocks of Anticosti there have been collected 121 species of fossils, of which the proportionally large number of 85 have been described in this and other publications of the survey as new forms The regaining 36 are mostly of the commor and widely distributed species of the Lower Silurian of Canada West, New York and other countries. Iney are the following : catenSrr ^T' ^- "^ J^r ''^*'"' .^- P^P^"^*^' §. explanata, Halysites S u en" ' S ° 1 ' q^adrata, Trematis Ottawaensis, Strophomena imbrex udinar n O ^ P^'^"7^«"^' ». alternata, Lept,«na sericea, Orthis test- udinaua 0. subquadrata, 0. lynx, Rhynchonella canax, R recurv- u'ostra Ambonychia radiata, Subulites Rfchardsoni, TLlonema umM- ^rSilis M r?-' ^'"^^^ P- ^^'^'-^^ P- subconica, Murchisonia giacihs, M ventricosa, Bellorophon acuta, B. bilobatus, Pterotheca transversa, Oncoceras constrictum, Asaphus platycephalus, A me' stos Dalmamtes calhcephalus, Cheirurus pleurcxanthemus, Ha^pes Ottawaen- sis, Calymene BlumenbacLi, Leperditia Canadensis. ^ ^"awaen There are no species which are exclusively Upper Silurian ; the aspect ot the whole fauna is eminently Lower Silurian. The rocks are very fos- sihferous throughout, .ut on approaching the dividing line between this group and Division 1 of the Anticosti group, which immediately succeeds, no less than 80 out of the 121 species suddenly disappear and are seen no more. It is evident, therefore, that there is here a break of considerable importance, probably, in some way connected with the great gap that occurs between the Hudson River and Clinton formations in Canada West and New York. Of the 41 species that pass this break, 30 appear to have become extinct during the period of the dcnosition of Division T ->. least they have not yet been detected in Division 2. Of the remainin<» eleven species, seven pass upwards into Division 3, and six into Division 4. 76 The eleven apccica that survived the period of the deposition of Division 1, iiichidc Stent) pom fibrosa, Ha/j/sites catennlatiia, and Oali/mmc Jilam- enlxtvlu all throe of which have a ^reat ;^oological ran^e, and arc, in most countries where they have been found, liowor, iMiddlo and Upper Silurian. There are six new apecies, — IMiolUea afJituH, Favosites prulificiiB, Zapkrentis belUstriati Beatricra nodidosa, Illivnus grandis and /. orh- eaiidatna. The two remaining species arc Stmphomena alternata and Murehhonia (jracUis, and these arc the only ones out of the eleven that 1 consider to be eminently Lower Siliu'ian forms. In view of these facts, it appears to ho quite clear that during the period of the deposition of Division 1 the Lower Silurian fauna became extinct in the seas of the Anticosti region. It is remarkable that out of the 85 new species, originally described from specimens collected in Anticosti, only three Beatrice a nndulata, Orthoeras formomm and 0. Xlphiaa have since been detected elsewhere. The first of these occurs in the Hudson lliver formation at Lake St. John on the Saguenay, and also on some of the Islands in Lake Huron. The other two have been found in the Trenton limestone. 2. Middle Silurian — Anticosti Group. Division 1. — The rocks of Division 1 rest directly and conformably upon those of the Lower Silurian, above noticed, with no apparent physical gap between them, although there is a paheontological break. It has been already stated that 41 of the species of the lower fauna pass this break. They are here joined by 45 additional species, making the whole fauna of this Division to consist of 86 species, so far as is yet known. Of these, 18 pass upwards into Division 2 ; 18 into Division 3, and 11 into Division 4. Of the 41 species Avhich are received from the Lower Silurian the following are known to occur in Canada West, and New York, and are variously distributed throughout all the formations from the base of the Quebec group to the top of the Hudson River formation. Stenopora fibrosa, Halysites catenulatus, Beatrice a undulata, Lingula quadrata, Strophomena alternata, S. planumbona, Le[)ta!ua scricea, Orthis porcata, 0. Lynx, Orthisina Vernoulli, Ambonychia radiata, Subulites elongata, Murchisonia gracilis, M. ventricosa, Bellerophon bilobatus, Pterotheca transversa, Orthoccras formosum, Ascoceras Newberryi, Asa- phus megistos, Calymene Blumenbachi and Cheirurus ph urexanthemus ; — 21 species. Among the 45 species which here made their first appearance in the rocks of Anticosti we find Strophomena rhoniboidalls, S. pecfen and Atrypa maryiyialis, all three very characteristic of the Middle and Upper Silurian. The new species include Atrypa umbonata and A. Prinstana, members of the group of which A. tumida may be regarded as the central 77 form a typo almost imknom, i,i the Lower, but very prolific of species in ^0 MnUUe and Upper Silurian. This group becomes extinct in the Devonian. Ihe genera Faoo.ites, Hdiolite, and IMopora which hero hrat appear ni force, are more characteristic of the upr,or than of the lower half of the Silurian series. Most of the other new species belong to the ordniaiy Sdurian genera. The fauna of this Division is partly Lower and partly Middle Silurian but IS more strongly tniged with the former than the latter. Divrsro.v 2.— From this Division we have only :59 species of which 18 arc received from Division 1, and 21 here first made their appearance. Out ot the whole fauna 2;J, or more than one half puss into Division ;5 and lb mto Divisi,)n 4. As before stated, the only species very characteristic oi the Lower Silurian are Strophmena alUniataixnd M^rchiHoniayraeilU. Iho most prominent fossil is Pentamema Barrandl which occurs in vast numbers. Owing to the inaccessible character of the coast in bad weather, it was not practicable to make a thorough search for fossils in this Division. Division 3.-In this Division there arc 53 species, of \vhich 28 are received from Divison 1, and 20 pass upwards. We here meet for the first time with Pentamerm nhhngm, Siricklandmia lens, S. lirata, S breiHs ^ndLaptoccUa henrnpherloa. These are all strongly characteristic ot tlie Middle Silurian and occur in this Division and also in Division 4 m great abundance. Division 4.-There are 70 species from this Division, of which 20 are received from below. Conclusion. The great abundance of such species as Strophomena rhomboldalis. S. peeten, ^'. antiquata, Leptama transvermlis, Orthis BavicUmi, Pentameriis ohlongm, Stride' andinia lens, S. lirata, S. hrevis, Gyrtia Mijrtea, Spirifem pUcatella and Leptocmlia hemispherioa, together with the general aspect of the whole fauna of divisions 3 and 4, render it quite certain that this part of the series repre- sents the Upper Llandovery rocks of England, and, perhaps, the Lower Llandovery also. They may not be exactly synchronous, for it seems to be now pretty conclusively demonstrated that a fauna may appear somewhat earlier in one region than in another. But, so far as we can at present decide the question by fossil evidence, these rocks are of the same age. I use the word fauna in a purely zoological sense, with no reference to geographical distribution. With regard to the Llandovery formation, Mr. Salter makes the following remarks :— " The Lower Llan- dovery, or, as I prefer to call it, to ith Professor Phillips, the Llandovery rocks;' are intimately united tvith the Caradoc, and pass up from them 78 with (I f/rntf (vlmixture of Lownr Silurian, not Upper Sil rian, forms. '• T\ny M;iy Hill Saiulstono, on tho contrary, as 8c(l;5wick showi'd in 18")-'5, is iiii(M|iiiv()calIy the baso ot" the Upiier Silurian, and contains scarcely "'ly true Lower types/' (Salter, (reoloj^ieal Magazine, vol. iii., p. 240.) Now, the only deposit, as yet known in America, which cx- hihits such an admixture, is Division 1 of the Anticosti grou]) If, then, the extinction of the lower Silurian fauna occurred in the ancient British seas at the same time that it did in the Ann rican ^^atcrs, it follows that Division 1 is Fiower Llandovery; and that the Hudson River is Caradoc. It is, iiowever, very dilKcult to correlate all the divisioi • of tlie Knglish Middle and Lower Silurian with those of America, and I siiall take this oc asion to mike a few observations on the other members of the series not found in Anticosti. From what we know of the origin and mode of accumulation of sediii.entary strata, it is highly improbable that each of the minor formations of one country should have its exact e(juivalent in another land several thousands of miles away, altho\ighthe larger groups, of which these smaller ones are the component parts, may be well rc[)re- sented, and paralleled in a general way. Everywhere we find a number of breaks ov ga[)S, and the probal)ilities are vastly against these breaks havii;:' been all occasioned at the samts time in distant localities. It is more consistent with the nature^of things that many of the breaks in Ame- rica should stand opposite — so to speak — the formations in England and vice versa. Perfect parallelism of the minor groups may bo looked for as the exception, not the rule.* Co.ii[)aring the Middle and Lower Silurian, I think we can identify, with certainty, only two horizons in England and America. The upper of • Profess ir A. G. Rim-iay gives the followinif acoouiit of the breaks iu tho Kiiglish aerk's from tlii liiiiguhv Fhigs up to tho Wuiilock Slial; : — " Liiigiilii Fhigs : Break very nearly complete both in geaera and species, aad probable uncon- formity. Tremadoc Slate : Break very nearly complete, both in genera and species, and probable uncoa- foi'mity. Llandeilo and Caradoc beds : Large break, especially in species, and probable unconformity. Lower Laudovery beds • Break and decided unconformity. Upper Landovery be Is : Break and strong unconformity. Wenlock Shale," &c. (Ramsay. Anniversary Address to the Geological Society, 18C3. Jour. Geo. Soc, vol.xix.) I 70 those is that in wliicli T)i' 'sioiis 8 and 4 of tlio Anticosti rocks are situ- ated, which, aa above state. i, may he roco;^iiized in the Llandovery series, and is also, most certainly, the Clinton of Canada West and New York. The otho • is the Lower Lin^nla Flails, to ho noticed further on. In Canada West and Ne.v York there is an almost total pahuontolo^'ieal break r)otween t'lo Clinton and lludso! Sliver, jmrtly filled by the nearly unf()ssiliferous Medina Sandstone. In Anticosti, Divisions 1, 2, and 8 jecra to occupy the place of this break, and in Kn;,'land, a[)i)arcntly tho Lower Llando\ery, and, perhaps, some part of tlie Caradoc (including the breaks mentioned by Professor Uamsay. ) From the top of the Hudson Itiver down to tho base of the Hiaok River limestone, there is no break, but all is occu[)ied by a single, immense, highly characteristic, and compact fauna, Tlie lower, middle, and upper portions of this series may bo easily recognized by sjjecies peculiar to each, but the abujulant and dominant forms, those that give a facies to tho 'vhole, are found throughout. Between the l?lack River and Chazy there is another gap, but it is not of so decided a character. These two formations are connected by about twenty species. At tho base of the Chazy in Canada West and Now York, there occurs a great brca' tlie importance of which has only be- come apparent during the last six years. The Lower Silurian of America can be divided into two principal groups — one al)ove the break at the base of the Chazy, and the other below. The former includes the Chuzy, Black River, Birdseye, Trenton, UMca, and Hudson River formations. Tho lower comprizes a series of formations, which are on^y now bcinnin'T to become known. These I shall more specially notice, commencing with the lowest. The St. John's group, near the city of St. John, m New Brunswick, has lately been well characterized by Messrs. Matthew, nartt,and JJaiiey. It consists of about 3000 feet of black slates and sandstones, and is under- laid conformably by a series of rocks very like those of the Cambrian. The fossils were determined by Mr. Hartt, several years ago, to be all primordial, and he correctly placed the formation in the horizon of Barande's "Etage C." We have lately, through the kindness of Mr. G. F. Matthew, received o, collection for comparison. Among them I find the plates of a Cystidean, OrtJns.' 1 sps., another brachiopod, like a Biscina, and species of the genera Faradoxides, Oonocephalites, Arione/lus, Mlcrodiscus, and Agnostus, with some others, all so closely allied to those, so excellentl;, described and figured by Salter in his various papers, that I have no hesitation whatever in pronouncing these rocks to be the Lower Lmgula Flagtj. I think this horizon is now as certainly determiricd in America by these fossils as is that of the Llandovery by the fossils of Divisions 3 and 4 of the Anticosti group. The St. John's slate (Jukes) 80 in Newfoundland and the Paradox'des beds rear Boston are, in all probability, of the same age. We have not yet discovered this fauna in Canada. Judi^ing from the aspect of the fossils I should say that Avhat we call Potsdam group is more recent, but next in succession. It consiats cf two or throe divisions. The lowest of these appears to be the sandstones and limestones on the north shore of the straits of Belloisle, and the rocks which, in the state of Vermont, arc called the Georgia slates and the Red sand-rock. These are characterized by Olendlus Vermontana, 0. Thomp- 8oni. Conocephalltes Adamsi, 0. Teiicer, C. Vuloanus, C arenosus, Ba- thjurus senectus, B. parvuhis, Salterella riujosa, S. pnlchella, S. ohtusa, Qbolns Labradoricus , Obolella ehromatica, 0. {Kutorfi'ma) clngulata, Orth'shia festinata, Camerdla antiqiiafa. Archeooyathus Atlanticns, A. 2)rofaiidus, Seolithus Unear'S, Palaeopliijcus inoipiens, and P. conrjregatm, with several other obscure forms of similar types. This fauna is totally distinct from that of the New Brunswick Lingula Flags, the Si,. John's group of Mr. Matthew. It might be called the Lower Potsdam. We have next the Potsdam sandstone of Wisconsin and ^Minnesota hold- ing so far as is yet known, iibout 50 species, mostly trilobitcs of a primor- dial type. There is some evidence to show that the upper part of the typical Potsdam of Canada and New York is of the same age. In these rocks Gasteropoda and Cepbalopoda fii^st make their appearance, although they are rare and the species sm.all. The fauna is entirely distinct from those of the St. John's grom^ .^ad Lower Potsdam. It seems probable that the Lower and Upper Potsdam correspond to the Upper Lingula Flags, but this correlation cannot be clearly proved by the fossils as yet. Next in succession comes the Lower Calciferous of Canada, New York, and Newfoundland. This is the original Calciferous saudrock of the New York survey. In this formation there arc known to me nearly loO spe- cies of fossils, about 100 of which are described. They are all with one exception (^Plenrotomaria Cawidends) distinct from those of the Upper Potsdam. Gasteropoda and Cephalopoda become numerous, and Lamel- lihrnnchiata first appear rarely. This formation has been identified in Scotland by Sir R. I. Murchison and Mr. Salter, in the Durness lime- stone, but it has not yet been determined to what particular horizon m the English series the limestone in (piestion belongs. The Upper Calciferous has not yet been discovered in either Canada or New York. It has only been ol>3erved in Newfoundland where it is over 1000 feet in thickness, but lias yielded as yet, only about 40 species of fossils, A few of these are found/stidcoe, Asteridoi or Edrioas- ieruke;— no species of EhynchomUa ;— now of Stroi>homena ;—oii\j three small species of Lamellihranchiata ; only 1 Ganteropod ;—^ Hete- ropods, and 4 Cephalopods. The trilobites are all, with the exception of CalyiLne BlumenhacU and Trinudeus ^micentricus ? specifically and to the extent of one-half gcnerically distinct from those of the Trenton.^ The only other fossils common to the two formations are Stenopora fibrosa, JIabjsUes catemdatus, Leptcena scricea, Ortlm striatida? and 0. hinx. These are all species of great geographical and geological range. With such great differences and so few resemblances it is scarcely possible to parallel the Llandeilo with the Trenton. It seems more probable that it should come in somewhere between the Chazy and Ldvis formations. It has been often urged thai such diversities as these may be due to differ- ences in the character of the sediment. But I do not attach a great dod of importance to that suggestion. For example, the trilobites of the Cov ■ coryphe and Dikelocephalm group above alluded to are found m v.i.t. numbers in Minnesota and Wisconsin in a formation of sandstone ; at Pouit Levis, in Canada, in a pure limestone, and in England in a forL-ation of slate. • NEW SPECIES OF FOSSILS FROM THE CLINTON AND NIAGARA FORMATIONS. CEPHALOPODA. Genua Ortiioceras, Breynius. 0. OberoN, n. sp.— Shell of the medium size, tapering at th.e rate of a little more than one line to the inch ; section circular ; Septa deeply JO This —no concave, a^iout two to the inch where the diameter is thirty lines; sii)huncle near the centre, small ; surface with from ^ight to ten annul J tions in two inches. Of this species only three specimens have been collected in Canada. The largest of these is 12 inches in longth, 4 inches in diameter at the larger, and 3 inches at the smaller extremity. It does not show any of the septa. The second specimen tapers, from 42 lines to 34 lines in a len-^th of 9 inches. Some of the septa next the chamber of haljitation are obscurely visible. The third specimen, is a fragment showing seven septa in a length of 42 lines. The annulations are somewhat variable in form in the same specimen. Some are depressed convex or flat on the crest ; others regularly convex, and still others have one edge ab: iptly elevated', giving a sub-imbricated aspect. Township of Gnmsb?; Niagara forma- tion.^^ J. Pettit. This species may be 0. imhricatum, Hall, Pal. N, Y., vol. ii, not 0. imbricatum Sowcrby. 0. Cadmus, n. sp.— This species appears t) attain a length of two or three feet with a diameter of three or four inches at the aperture. Section circular, or nearly so ; septa from two to three in an inch ; siphunclc nearly central, cylindrical, slightly constricted in the passage through the septa, from two to three lines in diameter. The rate of tapering appears to vary from about 1 line to 1§ lines to the inch. The chamber of habitation is 6 inches in depth, where the diameter of the aperture is 3 inches. In some specimens the aperture is slightly con- stricted. The shell varies in its characters. On the septate pw-tion it is longitudinally fluted with concave furrows, separated by sharp-edged ridges ; width of the furrows in a specimen 16 luies in diameter, 2 lines • where the diameter is 2 inches from 2^ to 3 lines. The furrows are often divided by a small elevated line along the liddle. There are from G to 8 fine transverse engir^illng .triaj in the length of 2 lines. Longitudinal stri« are also visible, but they are not re distinct as the transverse In specimens denuded of the shell tiiei-e are only obscure indications of the longitudmal fluting. The chamber of aabitation has numlv.i. of wide shallow annulations with uo \ni\\ov ,, of fur'ows on the cast, but these are seen on the shell in on.- specimen near the bottom of the chunbcr. It occurs in the township of Grimsby ; Niagara formation. J. Pettit! This species appears to be 0. .Micellatum, Hall, not 0. cancella- tum Eichwald. O. anmdatwn, Sowerby.=(0. undnlatum, Hall Pal. N. Y. vol. 2.) occurs along with it. 0. Bkontes, n. sp.— T.VO - three ftet in length ; three or four inches in ai.aneter '^t the apertu-e ; section circular ; tapering at the rate of about lib .) the inch , septa from moderately to rather strongly con- cave, from tiv. to eight in 'h- length of two inches ; siphuncle central or 84 nearly so, two or three lines in diameter. Surface unknown. The follow- ing are the dimensions of specimens : 1. — 42 lines in lenj^th ; tapers from 22 lines to 18 ; lo septa. 2. — 5 inches in length ; tapers from 24 to 16 I'nos ; 18 septa. 3. — 8i inches in length ; tapers from 30 to ir» lines; 25 septa. At the larger end there are 11 septa in 4 inches ; at the smaller extremity 7 in 2 inches. 4. — Septate portion 8 inches in length ; tapers from 80 to 18 lines; 20 septa. The septa become deeply concave on approaching the chamber of habitation about two inches of which remain. Grimsby ; Niagara formation. J. Pettit. 0. Pylades, n. sp. — Two or three feet in length ; largest s]iecimen seen three laches in diameter near the aperture ; tapering about It. lines to the inch ; section circular ; septa about five in two inches ; si])huncle small and about half way between the centre and the margin ; ch:Hnl)er of habitation large. Surface unknown. The following are the dimensions of the two specimens examined : 1. — Length 12 inches, including cliamber of habitati(^n G^ inches ; sep- tate portion or, inches in length, with 14 se})ta ; tapers from 5).[ to 2 inches. 2. — 4 inches in length ; 10 septa. The specimen is somewhat distorted, and the rate of tap cannot be well determined. This species 0C( i- Grimsby; Niagara formation. J. Pettit. 0. Varro, n. sp.- lis appears to bo a small, slender, closely annu- lated and very gradually tapering species. The septa cannot be very clccirly distinguished, ])nt in two of the specimens there apjiear to be alxmt twelve to the inch. The yii)liuncle is small and central, or nearly so. The annulations arc well defined, luiiformly concave in the bottom, and sepa- rated by somewhat acutely rounded ridges. Section circular. A specimen 43 li\ies in lengtl, tapers from Si to 1-^ lines, and is orna- mented with about '( ') annulations. Most of these pass directly round at ri<»'ht au'dos, but others are oblitiue, and a few divide into two liranches, and then unite again. There are eighteen in the first inch at the la- ^^er extremity, but towards the apex they 1)ecome more numerous. Another specimen 18 lines in length, tapers from 4 to 3 hues, and has 29 annulations, all of them at rignt angles. To this species I refer, provisionally a specimen collected by Prof. R. Bell, at Rockwood. It is 42 lines in length, and tai»ers from 11 lines to 8 lines, and has 30 annulations. Rockwood and Grimsl)y ; Niagara formation. Prof. R. Bell and J Pettit. 86 0. Remus, n. sp.— The following are the characters and dimensions of the only specimen of this species that has been collected : length 4 inches : taperhig from 12 to 5 lines ; section circular ; siplmncle sra'all not quite central ; sopta about 12 to the inch at the smaller extremity. Grimsby, Niagara formation. J. Pettit. Genus Cyrtoceras. Goldfuss. Fig. 23. Fig. 24. Fig. 23. — Cijrtoceras Corydon. Fig. 24.— " CUtus. C. CoRYDON, n. sp.— Shell rather strongly curved ; slightly constrict- ed at the aperture ; gently inflated from the aperture for a little more tliau one-third the length ; thence tapering and becoming gra.lually slender towards the apex. Section transversely ovate in the anterior half, and circular in the ai)ical half. Siphuucle very small and close to the shell in the median line of the ventral aspect. Length following the curve on the ventral side about 35 lines ; in a straight line from the dorsal side of the aperture to the apex 18 hnes ; dorso-ventral diameter of the aper- ture aI)out 7 lines ; lateral diameter about 8 lines ; dorso-ventral diameter at the first 3ei)tum 9 lines ; lateral diameter 10 lines ; depth of chamber of habitation 9 lines. Surface with obscure engirdling striix;, and small irre- gular constrictions of growth. Septa unknown. Grimsby ; Niagara for- mation. J. Pettit. C. Clitus.— Shell gently curved, slightly constricted towards the aper- ture ; section nearly circular. The siphuncle appears to b- small, and very near tlio shell in the median lino of the ventral aspect. Septa unknown. Surface with obscure engirdling striae and folds of growth. Length of the * specimen foU.nving the outer curve 20 lines -. dorso-ventral diameter at the aperture 7 lines. The transverse diameter is a little greater in the anterior G 86 half of the shell, but towards the apex the section is circular. Township of Grimsby ; Niagara formation. J. Pcttit. Gonus Oncoceras. Hall. This genus and Oi/rtoceras pass gradually into each other, but may be retained with benefit to science for those species which arc much inflated in the anterior half or two-thirds of the length. Of these there are many species which form a peculiar and interesting section. Fig. 25. Fifx. 2G. lig. 25. — Oncoceras Taucer. Fi',r, 2G. " Pettiti A small specimen. 0. Teucer, n. sp.— Shell much constricted near the aperture ; strongly tumid on the ventral side ; gently concave on the dorsal aspect ; besom- ing more slender towards the apex. Section with the dorso-veutral diameter a Tittle less than the lateral. Length of the specimen following the outer curve 23 lines ; in a straight line 20 lines ; transverse width in the con- striction near the aperture 7 lines ; at the most ventricose part, appar- ently at the third septum 8 lines ; dorso-ventral diameter at the constric- tion 6i lines ; at the third septum 8 lines ; depth of chamber of habitation about 4 lines. The three last septa appear to be about 1 line distant from each other in the middle of the ventral side, but as they are obscurely seen, further proof is required. Siphunclc unknown . Surface with obscure engirdling striaj or minute folds of growth. Township of Grimsby : Nia- gara formation. J. Pettit. 0. Pettiti, n. sp.— This species attains a length of four or five inches, and is somewhat variable in shape, the smaller individuals being more rounded in the section, and slightly more curved in the apical half. They ail have the form peculiar to the genu3,~con3trictcd ut the aperture, gra- dually enlarging for one-third or one-half the length, and then tapering 87 They at first somewhat abruptly, and then gradually. In the smaJler specimens the section is nearly circular, but in the larger it is more or less ovate, the dorsal, or side of the concave curve, being less convex than the ventral. The siphuncle is situated in the median line, near, but not in contact with the shell, about a line in diameter at the passage, but inflated to two or three lines between the septa. The chamber of habitation is large, ap- parently one-third the Avhole bulk of the shelL There are about four septa to the inch noasured on the side of a specimen five inches in length. The surface is marked with obscure engirdling strice which make a slight bond towards the apex along the median lino of the ventral aspect. There are also faint indications of longitudinal sulci. The following are the dimen- sions of three specimens. 1. — Length following the curve along the middle of the ventral side f) inches ; dorso-ventral diameter of the aperture 18 lines ; lateral diameter 22 lines ; dorsoventral diameter at the first septum 24 lines ; lateral diameter 28 lines ; diameter at the twelfth septum (at which point the section is circular) 10 lines ; depth of chamber of habitation 22 lines. The ventral outline is curved to a radius of about 3^ Inches. For about 9 lines from the aperture the shell enlarges very gradually, and then sud- deiily expands two or three lines. 2. — Length 4^ inches on the ventral curve ; dorso-ventral diameter at the aperture 17 lines ; lateral diameter 21 lines ; dorso-ventral diameter at the last septum 22 lines ; lateral diameter 27 lines ; depth of chamber of habitation 24 lines ; ventral aspect curved to a radius of 4 inches. The smaller extremity, where broken off, is about 9 lines in diameter. 3.— Length 3^ inches on the ventral curve ; dorso ventral diameter at the aperture 14 lines ; lateral diameter 10 lines ; dorso-ventral diameter at the last septum 19 lines ; lateral diameter 22 lines ; curved to a radius of about 3 inches. In all the specimens the dorsal aspect is less convex than the ventral but in some the difference is very slight. At first sight, taking extreme forms, it might well be thought that there are several species ; but there is a transition, and I do not see how they can be separated. The indivi- duals arc numerous, but mostly in fragments. Grimsby ; Niagara for- mation. This species is dedicated to the discoverer, Johnson Pettit, Esq., of Grimsby C. W., who has done good service to science in collecting many fossils from a formation diSiculi to work out. 0. TiiALES, n. sp. — Length five or six inches, proportionately not so ventricose as,0. Pettiti ; siphuncle not in the median line, but a little to the right thereof, moniliform, the segments two lines in diameter, nearly in contact with the shell ; about four septa to the inch on the side. In a a specimen which, when perfect, must have been six inches in length, the 88 chamber of habitation is two inches in depth, and the greatest diameter two inches. The aperture is often very much constricted. 1. — Chamber of liubitation only, lenj^tli 2 inches ; diameter of aper:ure, 10 lines ; dorso ventral diameter at last septum, 22 lines ; lateral diamoter, 24 lines. 2.— Chaml)er of habitation and last two septa ; dorso— ventral diameter of aperture, 17 lines ; lateral, IH lines ; dorso ventral diameter at the last septum, 22 lines ; lateral, 24 lines : depth of chamber of habi- tation, 20 lines. 3. — Length, 4 inches, but, when perfect, probably 6 inches ; aperture vi8i))le on the dorsal side only ; length of chamber of habitation, 30 lines ; section at last septum nearly circular, and 25 Ihies across ; there are 7 septa in 20 lines on the dorsal side. On the ventral side there arc about 3 septa to the inch in large specimens. This species differs from 0. Pettitl in being more slender, and in hav- ing the ventricose position more extended in length in proportion to the whole lcn";th of tlio shell. The surface is covered with fine obscure transverse striiV!, which make a sinus on the median line of tlie ventral aspect. Faint longitudinal sulci are visible on the cast. Grimsby ; Niagara formation. J. Pettit. Genus, Streptoceras, N. G. The above generic name is proposed for species having the form of Oncoceras, but with a tri-lobed aperture like Fliragmoceras. S. Janus, n. sp. — Large individuals are seven inches in length, and two and a half inches in greatest diameter; gradually enlarging from the aperture to about the mid-lengtli ; then more abruptly conti-acting ; the apical fourth of the length more slowly diminishing. Section at the aperture sub-triangular ; in the main body ol' the shell broad ovate or nearly circular and towards the apex circular, less com ex on the dorsal than on the ventral aspect. Aperture, in contour, a triangle with the angles rounded, forming three lobes, one of which is ventral, and the other two lateral, but near the dorsal aspect. The ventral lobe is narrowly rounded, and forms a projection like the lip of a pitcher. The lateral edges (of the aperture) behind the ventral lobe are at first gently concave, and then gently convex, gradually rounding into the two lateral lobes ; the dorsal edge between the two lateral lobes, is gently concave. The outline of the body of the shell on the dorsal aspect is nearly straight or slightly concave from the aperture for two-thirds the length, then curved. The ventral aspect almost uniformly arched to a radius of about four inches in a specimen seven inches in length. Siphuncle situated in the median line of the ventral aspect, moniliform, the segments nearly three Unes in diameter. Septa about four to the inch on the side, becoming more numerous towards 89 of the apex. Chamber of habitation more tlian one-third the whole length of the shell. , Surface with obscure transverse striic. The following are the dimensions of the most perfect specimen: — Length on the ventral curve 5 J inches ; diameter of the aperture from tiie dorsal edge to the most projecting i)oint of the ventral lobe, 21 lines ; lateral diameter on a line drawn across at 5 lines from the dorsal edge and passing through the most projecting points of the lateral lobes, 21 lines ; dorso-ventral diameter at the last septum, 25 lines ; lateral diameter at tho same, 2'J lines ; diameter at 27 Unes (measured on the dorsal side) from the last septum 10 lines. The section is, here, circular. Dei)th of the cham- ber of habitation on the ventral aspect, .'51 lines, and on tho dorsal, 27 lines. This specimen is broken oft' at the thirteenth septum ; when perfect it was probably about 7 inclies in length. Grimsby ; Niagara formation. J. Pettit. S. iiEiios, n. sp.— Six or seven inches in length and nearly three inches in greatest diameter ; gradually enlarging for about half the length and then tapering. Aperture with the lateral diameter much greater than the dorso-ventral ; trilobed, all three lobes rounded In outline the ventral side is arched to a radius of about four inches, gently curved for the anterior half and more strongly from thence to the apex. The dorsal outline is very gently convex for more than half the length and then con- cave to the apex. Chamber of habitation more than one-third the Avhole length. Septa three to the inch on the side in the first two inches, more numerous towards the apex. Siphuncle in the median line of the ventral aspect, near the shell but not in contact therewith, two or three linos in diameter. Surface with obscure transverse strioe. The following are the dimensions of three specimens : — 1. — Length on tho ventral curve, 7 inches ; dorso-ventral diameter of the aperture from the middle of the dorsal edge to the most pro- jecting point of the ventral lobe, 24 lines ; lateral diameter on a line drawn across at 5i lines from the dorsal edge, and passing through the most projecting points of the lateral lobes, 83 lines ; dorso-ventral diameter at the mid-length, 30 lines ; lateral, 34 lines ; diameter, at 7 inches from the aperture, about 9 lines. 2. — Length, 5^ inches ; dorso-ventral diameter of the aperture about 18 lines ; lateral, 27 lines ; dorso-ventral diameter at the mid-length, 28 lines ; lateral, 31 linos ; diameter at 5J inches from the aperture, 11 lines ; depth of chamber of habitation on tho side, 30 lines. 3. — This specimen consists of the chamber of habitation (30 lines in depth on the side), and the four last septa, Dorso-ventral diameter of the aperture, 20 lines ; lateral, 29 lines ; dorso-ventral diameter at the last septum, 27 lines ; lateral, 30 lines ; dorso-ventral diameter at the 00 fourth septum, 20 lines ; lateral, 21 lines. Grimsby ; Niagara formation. ,J. Pettit. This species is closely : ilicd to ^S*. JainiH, but differs in having the aperture proportionally w. i r on the lateral diameter, and in the outline of the body of the shell on tiic dorsal aspect— straight or concave instead of convex. The two species are closely allied, and may yet be united by intermediate forms. Fig. 28. F. 28. The upper figure represents the aperture of S. Janus m outline : the lower figure the aperture of S. Heros. CYSTIDEiE. Genus, Apiocystites, Forbes. A. Canadensis, n. sp.--Small, ovate, sub-pentagonal, rounded at the summit, truncated at the base. Arms five, four of them extending downwards to within one-fifth of the whole length from the base ; the fifth a little shorter than the others. Mouth ? a little above the mid- length, apparently closed by numerous small plates. The two upper 91 rhombs arc on a line with the mouth, the loAvcr close to the base. Those rhombs arc riot double, (as they are in A. eleyans, Hall), but single, i. e., the two triangles, of which each is composed, have their bases in contact, the elongated por ' oing rontinuous across the suture between the two plates on which cac. .lomb is situated. Regarding tiio side in which the mouth is placed as anterior, and the interbrachial spaces on each side of and next to it as the right and left sides, the rhombs are thus disposed : — the loft hand rliomb has its longer diagonal extending obli([uely downwards and backwards, at an angle of about .'50° Avith the axis of the fossil :— tb right rhomb has its longer diagonal very nearly at right angles to the axis : — the basal rliomb is mostly situated in the posterior interbrachial space on the left hand side and slopes downwards and bac' wards at an angle of about 45'', its lower angle passing under the third arm from the mouth. The arms are grooved along the middle, and have four or five pinnukc on each side. The surface is covered with irregular elevated lines Avhich in some places unite so as to inclose small poly- gonal spaces, giving to such parts a pitted aspect. Length, 7 lines; greatest diameter about 4^ lines. Only one specimen has been collected. A. eleijans, Hall, has only four arms and the two halves of the rhombs separated. Grimsby; Niagara formation. J. Pettit. . Fig. 28. Fig. 28. — Apioci/stites Huronensis. A specimen partly buried in stone. A. Huronensis, n. sp.— The specimen is partly buried in stone and its generic characters cannot be ascertained. The plates are moderately convex, depressed at the sutures. The rhomb at the b ■ is one-half or. a basal plate, and one-half on a plate of the second series. In the upper part is another rhomb, one-half of which is on a plate of the third series, and the other apparently on a plate of the fourth. The lower half, how- ever, of the basal rhomb, and the upper half of the upper rhomb are not distinctly seen. As no arms are visible, it seems certain that this species is not a true Apiocijstites. The position of the rhombs also favours this view. The specimen was found near Cabot's Head, on the shore of Lake Huron. Clinton ; or Niagara formation. A. Murray, Esq. A ? Tecumseth, n. sp.— This name is proposed for a Cystidean collected by Prof. R. Bell and H. G. Vcnnor, on Manitoulin Island in 1865. Only detached plates and fragments of the column were found. Most of the •I I IMAGE EVALUATION TEST TARGET (MT-3) 1.0 :f I.I :: m If I4£ M 1.8 1.25 1.4 1.6 ■^ 6" ► % <^ /^ C^. 0l>., ^'^' / >^ ^C» c\ ^e T Uy^. Photographic Sciences Corporation 4^ :\ \ ^ ^ % '% 23 WEST MAIN STREET WEBSTER, N.Y. M580 (716) 872-4503 92 plates have a large hemispherical protuberance which occup' 39 all of the plate, except a narrow flat border all round. The rhomos consist of two separated triangular spaces, their bases separated as in A. elegans, Hall. The column has from three to four lines in length at the point of attach- ment, encabod in an ovoid mass which is either a secretion of the column itself, or a parasitic Zoophyte, or, perhaps, a sponge. The surface of this part, as well as that of the tumid part of the plates, is covered with small polygonal pits. Near South Bay, Manitoulin Island ; Prof. R. Bell, H. G. Vennor. ZOOPHYTA. Genus zaphrentis, Rafinesque. Z. cmcTOSA, n. sp. — This species is three or four inches in length, and from nine to fifteen lines in diameter, engirdled with strong angular annu- lations, usually most abruptly elevated on the upper side, the spaces between concave. Tabulse well developed ; septa extending nearly or quite to the centre in the body of the coral, but in the bottom of the cup (as shown by one specimen) only about half way to the centre. Some of the individuals are more or less curved. Surface with very distinct rounded septal ridges, nearly three in one line, crossed by minute engird- ling stritiQ. lluronia Point, and two miles north of McLeod's Harbour, on the east side of Cockburn Island, Lake Huron, also in the township of Derby, near Owen Sound, in the Clinton and Niagara formations. Prof. R. Bell. Z. BiasBYi, n. sp. — Turbinate, either straight or gently curved ; from four to six inches in length, and from one inch to nearly three inches in diameter. Tabuliie well developed ; three or four septa in the width of two lines. Cup moderately deep, with a rounded elevation in the bottom. Surface unknown. Differs from Z. Stokesi in its larger size, and more developed tabulae. Huronia Point, and two miles north of McLeod's Har- bour, on the east side of Cockburn Island, Lake Huron. Clinton and Niagara formations. Prof. R. Bell. . Genus CYSTiPHYLLUM, Lonsdale. C. HuRONENSE, n. sp. — From one to three inches in length, rather slender, straight or irregularly curved. Cup well developed, conical, inner surface with depressed convex vesicles, the largest of which rarely exceed the diameter of one line. Surface usually decorticated, but when perfect with from eight to ten septal striae in the width of two lines. Huronia Point, and two miles north from McLeod's Harbour, on the east side of Cockburn Island. Clinton and Niagara formations. Prof. R. Bell. 93 Genus CYATIiOPHYLLUM, Goldfuss. C SOLITARIUM n. .p.-The specimen is four inches in length, and eighteen hnes in diameter ; septa five or six in three lines. The edges of the lamellae forming the vesicular cells, in the outer area, where, exposed by weathering, have an angular bend upwards, mid-way between the septa, giving the peculiar zig-zag appearance usually seen in siiicified specimens of Hehophyllum. This species resembles C. AMicostiense, but appears to be more slender. Portage Bay, Manitoulin. Clinton and ^Niagara formations. Prof. R. Bell and H. G. Vennor. Genus strombodes, Schweigger. S. EXiMius, n. sp.— Coiallum composite, apparently forming large depressed hemispherical colonies. Corallites from nine to fifteen lines across, the calico slightly concave in the outer half of the width, the central depressrn three or four lines wide. There are about fifty septo- costal radn m a corallite fourteen lines across. This species differs from >S'. pmtagonus and 6'. stnatm (both of wliich occur in the same beds) in having much coarser radii. It very much resembles a Phillipsastrea. West point of Manitoulin Island, and two miles north of McLeod's Harbour, on Cockburn Island. Clinton and JNiagara formations. Prof. It. Bell. Genus omphyma, Rafincsqus. 0. CONOREQATA, n. sp.— CoralUtes cylindrical, from six to twelve lines in diameter, and three or four inches in length, growing together in lar^e colonies, connected with each other by small radicles, but not in contact. Cup moderately deep ; a flat space in the centre, about one-third the Whole width ; from sixty to eighty radii. Huronia Point, Cockburn Island, Lake Huron. Clinton and Niagara formations. Pj-of. R. Bell. 0. Drummondi.— ThisisO. verruco^ ,E. & II.,notofRafinesque. The corallites are turbinate, separate three (jr four inches in length, an I some- times eighteen lines in diameter. Cup deep, with about 100 radii. Huronia Point, Cockburn Island, Lake Huron. Clinton and Niagara formations. Prof. R.Bell. Genus trematopoka. Hall. T. SUPERBA, n. sp.— The specimen is a hollow, cylindrical branched stem, five inches in length, and about six lines in thickness. The pores are about the tenth of a line in diameter, and from a little less to a little more than one line distant from each other. The thickness of the porifer- ous crust is about one line. Cabot's Head, Lake Huron. Clinton and Niagara formations. A. Murray. H