178 



CEPHALOPODA. 



vertebmh, Hnll, 1847, Pal. N. Y., vol. 1, 



Trenton Or. This name was preoc- 



rupierl by Srhlothcim in 1820, and by 



Eicha-aM in 1840. 

 veteiiitor, Billings, l.Su.'i, Pal. Foss., Cal- 



ciferous Gr. [.'^ig. nl'i.] 

 vindnbonense, Dawson, ]S(1S, Acad. Geol., 



Carboniferons. [Etv. proper name.] 

 virg.'fn.m, (?) SowPi-bv, "l839, Murch. Sil. 



S- -u. (Hall, Pal. N. Y., vol. 2,) Niagara 



Gr. [8ig. rod-like. J 

 vireulatum, Hall, lP.r,2, Pal. N. Y., vol. 2, 



Clinton & Niagara Gr. [Sig. like a 



small rod.] 

 villiitinn, Sandberger. Not American, 

 vnlgiitum, Billings, lS."i7, Kep. of Progi'., 



Trenton Gr. [Sig. common.] 

 whitii, Wincbell, 1863, Proc. Acad. Nat. 



Sci., Kinderhook Gr. [Ety. proper 



name.] 

 winchelli, Meek & Worthen, 1866, Proc. 



Acad. Nat. Sci. Phil., Devonian. [Ety. 



propel- name.] 

 woodworthi, :\IrGhcsnpy, 1861, New Pal. 



Foss., Niagara Gr. [Ety. proper 



name.] 

 xerxes, Billings, 1865, Pal. Foss., Quebec 



Gr. [Ety. projier name.] 

 xiphias, Billings, 18.57, Eep. of Progr., 



Trenton Gr. [Sig. having a point like 



a sword.] 

 Pheagmocee,\s, Broderip, 1839, Murch. Sil. 



Sy.st. [Ety. plinujivo-i, a partition ; 



keras, a horn.] 

 byronense, Worthen, 1875, Geo. Sur. 111., 



vol. 6, Niagara Gr. [Ety. proper 



name.] 

 ellipticum. Hall & "Whitfield, 1875, Ohio 



Pal., vol. 2, Niagara Gr. [Sig. ellip- 

 tical.] 

 expansum, Wincbell, 1863, Proc. Acad. 



Nat. Sci., Kinderhook Gr. [Sig. ex- 

 panded.] 

 hector, Billings, 1862, Pal. Foss., (.iuelph 



Gr. [Etv. jiropcr name.] 

 nestor. Half, 1867, 20th Reg. lie].., Ni.ig- 



ara Gr. [Etv. lll^■tlloIoLl•ical name.] 

 parvum. Hall & Whitfield, 1875, Ohio 



Pal., vol. 2, Niagara Gr. [SiL'. small.] 

 prsematurum, Billings, ISiHi, Can. Nat. & 



Geo., vol. 5, Black Riv. & Trenton Gr. 



[Sig. premature.] 

 spiiin>;tnit, see (ivroceras spinosum. 

 walshi, Meek '& Worthen, 1866, Proc. 



Acad. Nat. Sci. Phil., Flam. Gr. [Ety. 



proper name.] 

 PiLOCERAS, Salter, 1859, Qnar. Jour. Geo. 



Soc, vol. 1.5. [Ety. pihiin, a pounder 



or peStle ; knns, a horn.] 

 canadense, Bilhngs, 1860, Can. Nat. and 



Geol.. vol. 5, Calciferous Gr. [Ety. 



proper name.] 

 gracile, Billings, JS65, Pal. Foss., Quebec 



Gr. [Sig. slender.] 

 triton, Billings, l.siio, Pal. Foss., Quebec 



Gr. [Ety. mythological name.] 

 wortheni, Billings, 1865, Pal. Foss., Que- 

 bec Gr. [Ety. proper name.] 



Polycroniles haani, Troost, 1840, 5th Geo. Rep. 



Tenn., Devonian. Not clearly defined, 



but probably a Gyroceras. 

 Ptkronautilus, Meek, 1864, Pal. of Up. Mo. 



[Ety.pterori, awing; JSfai'lilas, a genus 



of shells.] 

 seebachanus, Geinitz, (Nautilus seebaoh- 



anus) Carb. und Dyas, Permian Gr. 



[Ety. proper name.] 

 S.ERiciiNiTES, Billings, 1866, Catal. Sil. Foss. 



Antic. [Ety. sairo, to show the teeth; 



ichiioR, a footstep.] The author sup- 

 posed the tracks might have been 



made by a species of Cephalopoda, 

 abruptus, Billings, 1866, Catal. Sil. Foss. 



Antic, Hud. Riv. Gr. [Sig. from the 



more abrupt termination and deeper 



impression at one end than the other.] 

 SoLEXoiHEiLrs, Meek & Worthen, 1870, Proc. 



Acad. Nat. Sci. Phil., vol. 20. [Ety. 



solen, a channel; clieilus, a lip.] 

 capax, Meek & Worthen, 1865, (Crypto- 



ceras capax) Proc. Acad. Nat. Sci. 



Phil, Coal Meas. [Sig. large.] 

 collectum, Meek & Worthen, 1870, Proc- 



Acad. Nat. Sci. Phil., St. Louis Gr. 



[Sig. gathered together.] 

 leidyi, :Meek & Worthen, 1865, (Nautilus 



leidyi) Proc. Acad. Nat. Sci. Phil., 



Keokuk Gr. [Ety. proper name.] 

 Spiralii, Lamarck, 1801, Svst. An. sans Vert. 

 rfwiio)ii, Troost, 1840, otli Geo. Rep. Tenn., 



Niagara Gr. Not clearly defined. 

 Streftocebas, Billings, 1866, Catal. Sil. Foss. 



Antic. [Ety. streplos, twisted; Iceras, 



horn.] 

 heros, Billings, 1866, Catal. Sil. Foss. 



Antic, Niagara Gr. [Ety. mytho- 

 logical name.] 

 Janus, Billings, 1866, Catal. Sil. Foss. 



Antic, Niagara Gr. [Ety. proper 



name.] 



Tem.n-ocheilus, McCoy, 1844, Synop. Carb. 



Foss. Ireland. [Ety. lemm, I divide; 



chi'iloxj a lip.] 

 coxanum. Meek & Worthen, 1869, Proc. 



Acad. Nat, Sci. Phil., St. Louis Gr. 



[Ety. proper name.] 

 latum. Meek & Worthen, 1870, Proc.Acad. 



Nat. Sci. Phil., Coal Meas. [Sig. wide.] 

 niotense. Meek & Worthen, 1865, Proc. 



Acad. Nat. Sci. Phil., Keokuk Gr. 



[Ety. proper name.] 

 peramplum. Meek & Worthen, 1865, (en- 



dolobus peramplus) Proc. Acad. Nat. 



Sci. Phil., Chester Gr. [Sig. very 



large.] 



spectabile, Meek & Worthen, 1860, (Nau- 

 tilus spectabilis) Proc. Acad. Nat. Sci. 

 Phil., Chester Gr. [Sig. showv, worth 

 seeing.] 



winslowi. Meek & Worthen, 1870, Proc. 

 Acad. Nat. Sci. Phil., Coal Meas. 

 [Ety. proper name.] 



