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Mapa, platee. charts, etc., may be filmed at different reduction ratios. Those too large to be entirely included in one exposure are filmed beginning in the upper left hand corner, left to right and top to bottom, aa many framea aa required. The following diagrama ']lutftrate the method: Lee cartse. pianchea. tableaux, etc., pauvent itre flimte i dee ts,ux de rMuction dif firents. Lorsque le document oet trop grand pour dtre raproduit en un seul ciich*, il est film« i partir da Tangle sup4rieur gauche, de gauche i ciroite. et de haut en baa. en prenant le nombre d'imagoa nteaasaire. Lea diagrammes suivants illuatrcnt la mithodo. 12 3 1 2 3 4 5 6 w (Reprint from The Ottawa Naturalist for Septembei, 1898. Vol. XII, No. 6. pp. 115-127.) ON SOME FOSSIL CEPHALOPODA IN THE MUSEUM OF THE GEOLOGICAL SURVEY OF CANADA, WITH DESCRIPTIONS OF EIGHT SPECIES THAT APPEAR TO BE NEW. By J. F. Whiteaves. ON SOME FOSSIL CEPHALOPODA IN THE MUSEUM OF THE GEOLOGICAL SURVEY OF CANADA. WITH DESCRIPTIONS OF EIGHT SPECIES THAT APPEAR TO BE NEW* By J. V. WlUTKA\ ES. j4, — F7'om the Cambro-Silurian rocks of the Provinces of Quebec, Ontario and jManitoba. Nan NO AULEMA, Clarke. Nanno anUmaS^'^'^^^- 1^97- Geol. Minn., Final Rep., Vol. Ill, pt. 2, p. 770, pi. 47, figs. 4-1 1- Several specimens in the Museum of the Survey, that are obviously referable to this species, were collected by the late Alexander Murray in 1854, from the Black River limestone at Western Manitou Island (now called Macdonald Island), LaTtenie SihiriL-n de la Boheme, Vol. ii, Texte 3, 1874, p. 261, pi. 217, Hg. S ; jil. 222, fi^s. II, 12 ; pi. 22S ; pi. 236, fii;H. 11 16 : an>t pi. 361, figs. 15-17. I ^'^L- 119 VVniTEAVKs— On somi: Fossil Cei'iialopoda. intermediate longitudinal ridges characteristic of that species. Both clearly belong to Barrandc's " Gnjup 6 " of the genus Orthoccras and to Hyatt's genus Dawsonoceras.'* The surface ornan"'entation of O. Beauportense appears to be decidedly dif- ferent from that of any of the small annulated species of Orthoccras from the Trenton limestone of the State of New York described and figured by Hall in the first volume of the Palieon- tology of that State. O. bilineatuni, Hall, is a much larger and more robust species, with coarser annulations and two series of longitudinal ridges or linear elevations. In O. clatJiratuni, Hall, the longitudinal markings arc very minute and crowded, and are said to consist of " sharp elevated lines distant j* of an inch," or very little more than a half a millimetre apart. There are, also, no comparatively coarse and distant longitudinal ribs or ridges in O. textile. Hall, and in that species the transverse annulation.s are represented as both prominent and angular. Tripteroceras Lambii. Gonioceras Lmnbi^ Whitcaves. 1891. Trans. Royal Soc. Canada, Vol. IX, sect. 4, p. 86, pi. XI, figs, i, and i a-b. Tfiptoceras Lanibi^ Clarke 1897. Geol. Minnesota, Final Rep., Vol. Ill, pt. 2, p. 793, pi, 56, figs. I and 2. TfipteroceraA Lambii, Whiteavcs. 1897. Geol. Surv. Canada, PaL'Eoz. Fossils, vol. Ill, pt. 3, p. 213. The type of this species is a well preserved specimen of the septate portion of the shell, rather more than ten inches in length but imperfect at both ends, collected in the Galena — Trenton limestone at East Selkirk, Manitoba, by Mr. J. Bi Tyrrolli in 1890. Until quite recently, the only other specimen that the writer had seen is the badly preserved but otherwise similar casi cUected at Wekusko Lake, in the District of Saskatchewan, by Mr. Tyrrell in 1897 and referred to on page 2 14 of the third volume of " Palaeozoic Fossils " published by the Geological Survey of * It seems to the writer that it would be more euphonious ".nd mcne in accor- dance with classical usage to write Dawsoniceras and Barramiiceras rather than Dawsonocerai and Barraiidtoceras. TiiK Ottawa Naturalist. 120 Canada. This specimen, which is also iinperfcct at both ends, is about a foot in length, and seven inches and three quarters in breadth at the iaiger end. In the fall of 1897, however, a specimen from East Selkirk, collected by the late Professor J. H. Panton in 1884 and belong- ing to the Provincial Museum at VVinnipcj^, which is obviously referable to this species, was lent to the writer by Mr. J. P. Robertson, at the suggestion of Mr. Tyrrell. This fossil is a badly preserved cast of the intcriorof the shell in a slab of building stone, and only the ventral surface is exposed. It is of interest as being much the largest specimen of the species that has yet been found and ashaving a considerable portionof the body chamber preserved. As measured along the middle of the exposed surface longitu- dinally, its length is twenty-three inches.the septate portion being twelve inches in length and the non- septate eleven. Its maxi- mum diameter or b'-eadth is seven inches and three quarters at the smaller end, and nine inches and a quarter at the iarger. About twenty-eight septa "'- 'se r jnted in the septate portion, 'nch to a half an inch apart j[htly imperfect at both ends "eet in length when entire. Jarkc (op. cit. p. 793) the O. servile, of Billings, are and they are from a quar at the surface. The spe^ and must have been more According to Professu: Orthoceras .ziphuis, 0. hastatiiin referable to Hyatt's genus Tripteroceras. To these may be added, as Canadian representatives, the present species and possibly O. semiplanatum, nobis. Cvrtoceras Ouehecense. (Sp. nov.) ^ * Shell elongate conical, increasing very slowly in thickness and not much cur^'ed ; dorsum slightly compressed, venter and 3ides rounded. Siphuncle large, cylindrical, dorsal and mar- ginal ; septa apparently rather closely approximated. Length of the only specimen collected, which is imperfect at both ends, about seventy-hve millimetres, or three inches ; thickness of the sam.c about eleven mm. at the smaller end. and nearly thirty at the larger. 121 WiiiTEAVES— On sumf Fossil CEriiALoi'ODA. Levis limestone at Pointc Levis, opposite Quebec City T. C. Weston ; a sinj^lc specimen, which seems to be cjuite dis- tinct from all the species of Cyrtoct'yas from that locality, .^escribed by K. Hillinirs in the first volume of "PaKeozoic Fossils." liAKRANDKOCKKAS SUIUOSTULATUM. (Nom. prov.) Shell consisting of about two gyroceran volutions which are coiled loosely on the same plane, but nowhere in close contact, and gradually becoming more eccentric, the outer one slightly compressed both above and below, so that the outline of a transverse section near the aperture would be broadly elliptical, and the dorso-vcntral diameter a little greater than the lateral. Surface of the test distil 'ly costulate, though in the only specimen that the writer lias seen the ribbing is most clearly defined on the inner volution where it consists of rather distant but irregularly disposed, small, thin, acutely angular and slightly flcxuous, transverse ribs or ridges, which are generally much narrower than the very shallow depressions between them, and marked with numerous minu<-f^ stnations parallc' to the ribs. Sutures of the septa not clearly indicated ; shape and relative position of the sij^huncle unknown. Black River limestone at Wolfe Island, near Kingston ; a fine specimen fully four inches in its maximum diameter, which vvas presented to the Museum of the Survey by Professor James Fowler in 1888. According to H)'att, B. coivolvaiis (the IJtuites convolvans of Hall but apparently not of Ilisinger), of the Black River limestone of the State of New York, has a smooth shell, though its shape appears to be essentially similar to that of the speci- men from Wolfe Island. LiTOCERAS VEKSUTUM, Billings. (Sj).) Naufilus vcrsutns, Bi' lings. i[ 5. Geol. Surv. Canada, PalfBoz. Fossils, Vol. I, p. 259. Litoceyas versHtiDii, ViyaXt 1883. Genera of P'ossil Cephalo- pods (Proc. Boston Soc. Nat. Hist, Vol. XXII) p. 268. Thk Ott ava Naturalist. 122 IMoccnxs Wuitcavsi, Hyatt. 1894. l'h>'logcny of .111 Acquired Characteristic (Froc. Amcr. IMiilos. Soc, Vol. XXXII) p. 4;' 5. On page 475 of the paper last cited I'rofessor Hyatt "'rites as follows, ill reference to his i]jcniis f.itoceras. "The type of this "[onus, when it was first described, were the specimens in the (leolo^ical Museum at Ottawa identified as Nautildsvcrsittns of Hillings, but these appear here as IMoccnxs Whitcuvsi, since there is every reason for supposin^r that they are not the species described by J^jillings under the name o^ 7>crsHtits." A few lines farther on, Professor M\'att makes the following remarks upon his Litoceras ^^^hitcavsi. " Having examined the so-called origin- als of this species " (i.e., of Nautilus vrrsut/ts, Billings) "so far as they exist in the Geological Museum at Ot -.iwa, I have found that none of them came from Billings' locatiiy, Bo, me liay, and none of them agree with Billings' description. Billings' species had ten septa to the inch ; this species has Ihc sutures about one- quarter of an inch apart, a difference shewing essential distinc- tion." These statements are unfortun.itel)' based upon such grave misapprehensions of the facts of tiie case as to call im- peratively for some explanation. When Professor Hyatt visited the Museum of the Survey there were, and are still, five speci- mens of nautiloid shells from the "Quebec Group" of Newfound- land on exhibition in one of the upright cases. One of these then had, and still has, two labels attached to it, one printed and the other written. The printed label reads, — " Newfoundland. Bonne Bay, East Arm, S.-W. side. 1861. J. R." — and the writ- ten one, — " .V. vcrsutiis, type." Moreover, notwithstanding Prof Hyatt's statement to the contrary, this specimen does agree with liillings' description and measurements of the type and only known specimen of Nautilus versutus, and it clearly has about ten septa to the inch. Of the other specimens, three are labelled as having been collected at Point Rich by Mr. James Richc^idson in r86i. The.se, in the writer's judgment, are most probably tho types of Nautilus insolens^ Billings, and apparently also of Lito- 123 VVhiteaves — On some Fossil CKPiiALoroDA. ccras biangulatum ,\\y?i\.\.. The fifth specimen, wlich was collected at Table Head by Mr. Richardson in 1861, is a small specimen of Lituitcs Pinto, Billings, but clearly not the type of that species. /). — Froui the Silurian (Upper Sihirian) rocks of Manitoba. TRirr.EUKOCKKAS ROUSONI. (Sp. nov.) Shell large, robust, longicone, straight and increasing very slowly in breadth and thickness, flattened in the broad siphonal and presumably ventral region, but rounded and much narrower at the sides : characters of the antisiphonal side and nature of the surface markings unknown. Sutures of the septa broadly and concavelv arched on the venter, nearly straight where they pass over the sides j the three or four next to the body chamber closer together than those which immediately precede them. Siphuncle marginal, presumably ventral, large, expanded between the septa and apparently nummuloidal. Three imperfect and badly preserved casts of the interior of shells of this species, from Stonewall, Manitoba, were presented to the Museum of the Survey in the fall of 1897, two by Mr. W. H. Robson, of Lethbridge, Alberta, £'-id one by Mr. Donald Gunn of Stonewall. The whole of the antisiphonal and presu- mably dorsal region of each of these specimens is buried in a very hard dolomitic limestone, so that it is doubtful whether they are referable to Hyatt's genus Tripleuyoceras or not. The two presented by Mr. Robson are septate throughout, and the larger one has a nearly cylindrical, septate but possibly adventitious object, like a cast of the interior of the shell of a small OrtJioccras, some two inches in length and fully half an inch in thickness, exposed in the middle of its siphuncle posteriorly. The one presented by Mr. Gunn has a consideiable portion of the ventral side of the body chamber preserved, but the lateral margin on both sides is very 'vnperfect. The species .seems to differ from the " OrtJtoceras (Actino- ■-^fsmi^- . ?^jr»'-**- ■ ,--~. .♦(•f>***~» •'^-^^tvsaas**^ The Ottawa Naturalist. 124 ccras) Bc/oitrnsc" of Whitfield,* from the Ticnton limestone of Wisconsin, which it resembles in some respects, in its more flattened venter, more concavely arched septa in the ventral region, and ill iis proportionately larger and apparently nummuloidal siphuncle. TROCHOCERAS INSIGNE. (Sp. nov.) Shell, or rather cast of the interior of the shell, rather large and attaining to a maximum diameter of fully five inrhes, dextral and consisting of two slender, closely contiguous volutions that are coiled on very nearly the same plane, and slightly compressed both above and below, so that the outline of a transverse section of the outer volution would be broadly elliptical, with the dorso- ventral diameter a little greater than the lateral. Surface of the test unknown, that of the cast marked by large, transverse rib- like plications, which are moderately prominent on each of the sides, but obsolete on the periphery or venter, — and by very small, acute, thread-like spiral ridges. The transverse plications are rather distant, slightly iiexuous and somewhat sigmoidal on each side of the outer volution, where they are separated by wide and shallowly concave depressions. The small spiral ridges are numerous, comparatively close together, through not very regu- larly disposed, and in one specimen, at least, ratlier larger and more prominent on the periphery of the outer volution than on its sides. Sutures of the septa concavely arched on both of the sides, where each suture intersects one, or rarel}' two, of the transverse plications. Shape and position of the siphuncle unknown. The first specimen of this shell that the writer had seen was given to the late Chief Justice Wallbridge by a quarry man at Stonewall and presented to the Museum of the Survey by Prof. E. J. Chapman in 1895. The exact locality from which this specimen was obtained was for a long time doubtful, but there is now every reason for believing that it came from the quarries at Stonewall. At any rate, in the fall of 1897, two specimens * Geology of Wisconsin, Vol. iv, ;-. 226, pi. 8, tig. i; and pi. 10, figs. 9, and 10. ^A 125 Whitl:aves--On some Fossil Cei'haloimjda. which arc known to have been collected at Stonewall were pre- sented to the Museum, one by Mr. John Gunn, and the other by Mr. W. H. Robson. At the same time, also. Mr. Tyrrell obtained a characteristic fragment of a specimen of this species, /;/ situ, at the Stonewall quarries. liy far the most perfect of the specimens yet received is the one presented by Mr. Gunn. It has two entire volutions preserved, which are gyroccran rather than nautilian in their mode of coiling, but very slightly asymmetrical. The inner volution is openly coiled, the apex or initial point being widely eccentric, and there is a large central perforation about an inch and a quarter in diameter. These specimens seem to indicate a previously undescribed species, which is here referred provisionally to TrocJioccras rather than X.O Lituitcs,\x\\\\\ theshapeandrelativepositionof itssiphunclc be ascertained, when it may have to be transferred to Plectoccras, Peisniuceras or Discoccras. It differs from Lituitcs Bickmoreanus Whitfield, (from the Niagara limestone of Indiana) which Hyatt says is a Plectocetas, in its more openly coiled inner volution, in its broadly elliptical and not subquadrate cross section, and in its closer transverse plications, which are quite obsolete on the periphery. Professor Whitfield, who has kindly compared two of the best specimens from Stonewall with the types of his species, thinks that the two forms are quite distinct. C. — From the Devonian rocks of Ontario. t ♦■' Ortiioceras Walpolense. (Sp. nov.) Shell small, longicone, straight, slender and increasing very slowly in thickness, slightly and perhaps abnormally compressed. Test unknown ; surface of the cast marked by thin acute, trans- verse, annular ridges, which are much narrower than the grooves between them. Septa, and shape and position of the siphuncle unknown. The largest specimen known to the writer was collected many years ago by J. DeCew in the Corniferous limestone of Lot 6, Concession 14, of the Township of Walpulc. It is about TiiK Ottawa Naturalist. 126 t ♦•- eighty-four mtllimctres (3'^' inches) in length, by six mm. in thickness at the smaller end and about fourteen at the larsjcr. Near the smaller end there arc about ten annulations and near the larger end about six, in a length of ten mm. The only other .specimen that the writer has seen, is a fragment about an inch and a half in length, from the same formation and labelled Lot 42, Concession i, Cayuga, which is probably referable to this sjjccies. It has about eight annulations in a length of ten mm., at the larger end. 0. Tlu'stor, Hall,* is described as having proportionately finer annulations, and O. Idiiioii, Hall,-'- judging from the fin-ure, is almost cylindrical. Oktiiockkas Hackrsntllensk. (Sp. nov.) Shell of medium size, straight, longicone and increasing slowly in thickness. Surface markings consisting of a fine rec- tangular reticulation caused by the crossing of numerous equi- distant and continuous, minute and close-set, longitudinal ridges b)- transver.se but otherwise similar ridges. In the only speci- men that the writer has seen, the longitudinal ridges are rather less than a millimetre apart at the smaller end, and about a millimetre apart at the larger ; while the transverse ridges are slightly closer together, especially towards the larger end. Septa, and shape and position of the siphuncle unknowH. Corniferous limestone at Hagcrsville, collected by the writer in 1890 ; a slightly distorted specimen, about three inches long and an inch broad at the larger end, with a considerable portion of its surface buried in the matrix. The species seems to be well characterized by the minute- reticulation of its surfrce, though its internal characters are unknown. * I'alrvontology of the State of New York, Vol. v, pt. 2, p. 302, pi. 82, fig. 18. tll)id., p. 302, pi. 43, figs, II ami 12. I 13; VVjiiteaves— On some Fossil Cei-iialopoua GOMPIIOCERAS EXIMIUM, Mall. Coviphoccras cximinm.W^W. 1861. Fourteenth Reg. Rep. \.Y. St. Cab. Xat. Hist., p. 109. " I S76. Illustr. Devon. Fossils : Ce- phalopoda, J)]. 44, figs. 1 and 2. " 1879. I'al. X. York, vol. v, pt. 2, p. 329. pi. 44, fig.s. 1.2: and Sup- plement Ci8cS8) p. 32, pi. 120, figs. 1-3 ; and pi. 131, figs, i and 2. In the Museum of the Survey there are two good specimen.s of this species, from the Corniferous limestone of St. Mary.s, one presented by Air. Hlack^ider, of Alontreal, about tlic year 1879 or 1880, and the other obtained through Mr. ])avid Bovle, of Toronto, in 1884. GvkOCKKAS Ni'MA, J^illings. Gyroccras Kui);aA^\\\\\'\'g'^. 1874. Canad. Xat. and Geol., X.S., vol. VII, p. 2};:^. The type and for many years the only known specimen of this rather obscurely defined species, is a very im[)erfect cast of the interior of the shell, which is said to be "about 10 inches" in its maximum diameter, from the Corniferous limestone at Kilvvorth, collected by K. or J. DeCew. Jn 1884 a somewhat more perfect and rather smaller but otherwise essentially similar specimen, from the Corniferous limestone of Pelee Island, was presented to the Museum of the Survey by the Rev. W. Minter Seaborn. This specimen, wi'iich is about seven inches in its maximum diameter, shows that the sutures of the septa are flexuous, and sigmoidally curved on each side of the shell. The surface markings, and the shape and relative position of the siphuncle of G. Xiima are still unknown. Ottawa, July 28th, 1898.