CEPHALOPODA. 



171 



cancellatm, McChesney, 1861, New Pal. 

 Fobs., Niagara Gr. See L. ocddentalis 

 and Nautilus cancellatus and N. occiden- 

 talis. If this species, as Prof. Hall 

 suggests, is a true Nautilus, MeChes- 

 ney's name has precedence. 



capax, Hall, 1860, Rep. of Progr. Geo. 

 Sur. Wis. See Nautilus capax. 



coniplanatus, Shumard, 1863, Trans. St. 

 Louis Acad. Sci., Calciferous Gr. [Sig. 

 smoothed.] 



convolvans, (?) Schlotheim, 1813, in Jahr- 

 buch, (Hall, Pal. N. Y., vol. 1) Black 

 Riv. Gr. [Sig. wrapping together.] 



farnsworthi, Billings, 1861, Pal. Foss., vol. 



1, Calciferous Gr. [Ety. proper name.] 

 graftonensis. Meek & Worthen, 1869, 



Proc. Acad. Nat. Sci. Phil., Niagara 

 Gr. [Ety. proper name.] 



hercules, Winchell & Marcy, 1865, Mem. 

 Bost. Soc. Nat. Hist.," Niagara Gr. 

 Syn. for Cyrtoceras amplicorne. See 

 20th Reg. Rep. N. Y. 



imperator, Billings, 1861, Pal. Foss., Cal- 

 ciferous Gr. [Sig. the chief.] 



magnificus, Billings, 1857, (Gyroceras 

 magnificum) Rep. of Progr., Hud. 

 Riv. Gr. [Sig. magnificent.] 



marshi. Hall, 1867, 20th Reg. Rep., Niagara 

 Gr. [Ety. proper name.] 



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

 Sur. Wis., Niagara Gr. This species 

 is now refeired by Prof. Hall to the 

 genus Nautilus, see 20th Reg. Rep. 

 It was first described by McChesney, 

 Jan. 1860, as Cyrtoceras giganteum, but 

 that name being preoccupied, in 1861 

 he proposed Lituites cancellatus. If it 

 is a Nautilus, the word ocddentalis be- 

 ing preoccupied, McChesney's name 

 cancellatus has precedence. 



ortoni, Meek, 1873, Ohio Pal., vol. 1, Ni- 

 agara Gr. [Ety. proper name.] 



palinurus, Billings, 1862, Pal. Foss., Cal- 

 ciferous Gr. [Ety. mythological name.] 



pluto, Billings, 1865, Pal. Foss., Quebec 

 Gr. [Ety. mythological name.] 



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

 Wis., Chazy & Black Riv. Gr. [Ety. 

 proper name.] 



undatus, Emmons, 1842, Tlnachus un- 

 datus) Geo. Rep. N.Y., Black Riv. and 

 Trenton Gr. [Sig. wavy.] 



undatus var. occidentalis, Hall, 1861, Rep. 



of Progr. Wis., Black Riv. & Trenton 



Gr. [Sig. western.] 



Nautilus, Breynius, 1732, Dissert. Polyth. 



[Ety. Nautilos, a sailor or navigator.] 



avonensis, Dawson, 1868, Acad. Geol., 

 Carboniferous. [Ety. proper name.] 



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

 vol. 4, Quebec Gr. [Sig. an ancestor.] 



barrandi. Hall, 1876, Ulust. Devonian 

 , Foss., Ham. Gr. [Ety. proper name.] 



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



2, Iowa Geo. Sur., Coal Meas. [Sig. in 

 two series.] This is probably a syn. 

 for N. occidentalis. 



buccinum, Hall, 1876, Illust. Devonian 



Foss., Ham. Gr. [Sig. a sea-trumpet.] 



This species was referred to Gyroceras 



expansum. 

 calciferus, Billings, 1865, Pal. Foss.,Calcif- 



erous Gr. [Ety. from the Calciferous 



Group.] 

 cancellatus, McChesney, 1861, (Lituites 



cancellatus) New Pal. Foss., Niagara 



Gr. [Sig. cross- barred.] 

 canaliculatus. Cox, 1857, Geo. Sur. Ky., 



vol. 3, Coal Meas. [Sig. grooved.] 

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



of Progr. Geo. Sur. Wis., Niagara Gr. 



[Sig. large.] 

 capax, Meek & AVorthen, 1865. This 



was preoccupied and must yield unless 



it can be retained in the subgenus 



Solenochellus, which see. 

 chesterensis. Meek & Worthen, 1860, 



Proc. Acad. Nat. Sci. Phil., Chester 



Gr. [Ety. proper name.] 

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



vol. 4, Low. Carb. [Ety. proper name.] 

 coUectus, see Solenochellus collectum. 

 cornulum. Hall, 1876, Illust. Devonian 



Foss., Ham. Gr. [Sig. a little horn.] 

 coxanus, see Temnocheilus coxanum. 

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



3, Coal Meas. [Sig. decorated.] 

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

 bec Gr. [Sig. deserted.] 

 digonus. Meek & Worthen, 1860, Proc. 



Acad. Nat. Sci. Phil., Kinderhook Gr. 



[Sig. two-cornered.] 

 disciformis, see Discites disciformis. 

 discoidalis, see Trematodiscus discoidalis. 

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



Chi. Acad. Sci., Up. Coal Meas. The 



name was preoccupied by Meyer in 



1831. 

 eccentricus, Meek& Hayden, 1858, Trans. 



Alb. Inst., vol. 4, Permian Gr. [Ety. 



ek, from ; kentron, center.] 

 ferox, Billings, 1865, Pal. Foss., Calcifer- 

 ous Gr. [Sig. fierce.] 

 ferratus. Cox, 1857, Geo. Sur. Ky., vol. 3, 



Coal Meas. [Sig. covered with iron.] 

 forbesanus, McChesney, 1860, Desc. New 



Pal. Foss., Coal Meas. [Ety. proper 



name.] 

 gilpini, Swallow, 1860, Trans. St. Louis 



Acad. Sci., Coal Meas. [Ety. proper 



name.] 

 globatus, Sowerby, 1825, Min. Conch., 



Chester Gr. [Sig. made round.] 

 hercules, Billings, 1857, Rep. of Progr. 



Can. Geo. Sur., Hud. Riv. Gr. [Ety. 



mythological name.] 

 hlghlandensis, see Discites highlandensis. 

 illinoisensis, McChesney, 1860, Desc. New 



Pal. Foss., Coal Meas. [Ety. proper 



name.] 

 ingentior, Winchell, 1862, Am. Jour. Sci., 



2nd series, vol. 33, Marshall Gr. [Sig. 



larger, enormous.] 

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

 bec Gr. [Sig. rare, unusual.] 



