MEL. — NAU.] 



CEPHALOPODA. 



443 



niagarensis, Spencer, 1884, Bull. No. 1, 

 Mus. Univ. St. Mo., p. 60, Niagara Gr. 



occidentalis, Hall, 1861, Rep. of Progr. Geo. 

 Sur. Wis., Niagara Gr. This species is 

 now referred by- Prof. Hall to the genus 

 Nautilus, see 20th Rep. N. Y. St. Mus. 

 Nat. Hist., p. 400. It was first described 

 by McChesney, Jan. 1860, as Cyrtoceras 

 giganteum, but that name being preoc- 

 cupied, in 1861 he proposed Lituites 

 cancellatus. If it is a Nautilus, the 

 word occidentalis being preoccupied, 

 McChesney's name cancellatus has pre- 

 cedence. 



ortoni, Meek, 1873, Ohio Pal., vol. 1, p. 

 186, Niagara Gr. 



palinurus, Billings,, 1862, Pal. Foss., vol. 1, 

 p. 25, Calciferous Gr. 



pluto, Billings, 1865, Pal. Foss., vol. 1, p. 

 259, Quebec Gr. 



robertsoni, Hall, 1861, Rep. of Progr. Wis., 

 p. 38, Chazy and Black Riv. Grs. 



seelvi, Whitfield, 1886, Bull. Am. Mus. 

 Nat. Hist., vol. 1, p. 330, Birdseye Gr. 



undatus, Emmons, 1842, (Inachus unda- 

 tus,) Geo. Rep. N. Y., p. 394, and Pal. 

 N. Y., vol. 1, p. 52, Black Riv. and 

 Trenton Grs. It is not a Lituites. 



undatus var. occidentalis, Hall, 1861, Rep. 

 of Progr. Wis., p. 38, Black Riv. and 

 Trenton Grs. 

 Melii cancellatus, Emmons, 1856, Am. Geol. 

 Not defined so as to be recognized. 



cincinnalise, D'Orbigny, 1850, Prodr. d. 

 Paleont., t. 1, p. 4. Not defined so as to 

 be recognized. 

 Nautilus, Breynius, 1732, Dissert. Polyth., 

 p. 11. [Ety. Nautilos, sailor or naviga- 

 tor.] Shell subglobose, compressed ; 

 volutions coiled in the same plane, con- 

 tiguous ; umbilicus open or closed ; 

 septa simple, arched or waved on the 

 lateral margins ; siphuncle central or 

 subcentral ; lip sinuous on the dorsal 

 and ventro-lateral margins ; surface 

 smooth, striate, costate, or bearing nodes. 

 Tvpe N. pompilius. 



acrseus, Hall, 1879, Pal. N. Y., vol. 5, pt. 

 2, p. 417, Ham. Gr. 



avonensis, see Solenochilus avonense. 



avus, Barrande, 1869, Syst. Sil. de Boh., 

 vol. 4, p. viii, pi. 435, Quebec Gr. 



barrandi, Hall, 1876, see N. Magister. 



biserialis, Hall, 1860, Supp. to vol. 1, pt. 

 2, Iowa Geo. Sur., p. 92, Coal Meas. 



buccinum, Hall, 1876, Ulust. Devonian 

 Foss., pi. 60, and Pal. N. Y., vol. 5, pt. 

 2, p. 412, Ham. Gr. Type, of Hyatt's 

 genus Nephriticeras. 



calciferus, Billings, 1865, Pal. Foss., vol. 

 1, p. 258, Calciferous Gr. 



cancellatus, McChesney, 1861, (Lituites 

 cancellatus,) New Pal. Foss., p. 96, Ni- 

 agara Gr. 



canaliculars, Cox, 1857, Geo. Sur. Ky., 

 vol. 3, p. 575, Coal Meas. Type of Hy- 

 att's genus Solenoceras. 



capax, Hall 1860, (Lituites capax,) Rep. of 

 Progr. Geo. Sur. Wis., p. 3, Niagara Gr. 



capax, Meek & Worthen, 1865. This was 

 preoccupied and must yield unless it 

 can be retained in the subgenus Soleno- 

 chilus. 



cavus, Hall, 1879, Pal. N. Y., vol. 5, p. 416, 

 Ham. Gr. 



champlainensis, Whitfield, 1886, Bull. Am. 

 Mus. Nat. Hist., vol. 1, p. 329, Birds- 

 eye Gr. 



chesterensis, Meek & Worthen, 1860, Proc. 

 Acad. Nat. Sci. Phil., p. 469, and Geo. 

 Sur. 111., vol. 2, p. 306, Kaskaskia Gr. 



clarkanus, Hall, 1858, Trans. Alb. Inst., 

 vol. 4, p. 32, and Bull. Am. Mus. Nat. 

 Hist., p. 92, Warsaw Gr. 



collectus, see Solenochilus collectum. 



cornulum, Hall, 1876, Ulust. Devonian 

 Foss., pi. 60, and Pal. N. Y., vol. 5, pt. 



2, p. 414, Ham. Gr. 



coxanus, see Temnochilus coxanum. 

 danvillensis, White, 1878, Proc. Acad. 



Nat. Sci., p. 36, and Cont to Pal., No. 8, 



p. 170, Coal Meas. 

 decoratus, Cox, 1857, Geo. Sur. Ky., vol. 



3, p. 572, Coal Meas. 



desertus, Billings, 1865, Pal. Foss., vol. 1, 



p. 258, Quebec Gr. 

 digonus, see Trematodiscus digonus. 

 disciformis, see Discites disciformis. 

 discoidalis, see Trematodiscus discoidalis. 

 divisus, White & St. John, 1868, Trans. 



Chi. Acad. Sci., p. 124, Up. Coal Meas. 



The name was preoccupied by Meyer 



in 1831. 

 eccentricus, Meek & Hayden, 1858, Trans. 



Alb. Inst., vol. 4, p. 83, and Pal. Up. 



Mo., p. 65, Permian Gr. 



Fig. 746.— Nautilus laberi. Lateral and front 

 views. Magnified 2 diara. 



faberi. n. sp. Shell small, smooth, all vo" 

 lutions embraced in the outer one> 

 leaving only a small round umbilicus! 

 aperture semielliptical above the inte- 

 rior volution. The species is founded 

 on a single specimen having a piece 

 chipped from the dorsal side of the last 

 volution, and a small piece broken from 

 the inner volution, but nowhere dis- 

 closing the septa. It was found in the 

 Coal Measures, on Elk Horn Creek, 

 Kentucky, and belongs to Mr. Charles 

 Faber's collection. 



ferox, Billings, 1865, Pal. Foss., vol. 1, p. 

 351, Calciferous Gr. 



