CEPHALOPODA. 



173 



teucer, Billings, 1866, Catal. Sil. Foss. 



Antic, Niagara Gr. [Ety. mytholog- 

 ical name.] 

 thales, Billings, 1866, Catal. Sil. Foss. 



Antic, Niagara Gr. [Ety. proper 



name.] 

 Ormocebas, Stokes, 1840, Trans. Geo. Soc, 



2nd series, vol. 5. [Ety. ormos, a chain 



or necklace ; keras, horn ; from the 



appearance of the siphuncle.] 

 backi, Stokes, 1840, Trans. Geo. Soc, 2nd 



series, vol. 5, Clinton Gr. [Ety. 



proper name.] 

 bayfieldi, Stokes, 1840, Trans. Geo. Soc, 



2nd series, vol. 5, Clinton Gr. [Ety. 



proper name.] 

 crebriseptum. Hall, 1847, Pal. N. Y., vol. 



1, Hud. Eiv. Gr. [Sig. having many 



septa.] 

 (7) gracile. Hall, 1847, Pal. N. Y., vol. 1, 



Black Riv. Gr. [Sig. slender.] 

 moniliforme. Hall, 1847, Pal. N. Y., vol. 



1, Chazy Gr. [Sig. like a string of 

 beads.] 



remotiseptum, Hall, 1850, 3rd Reg. Rep., 

 Trenton Gr. [Sig. having distant 

 septa.] 



tenuifllum. Hall, 1847, Pal. N. Y., vol. 1, 

 Black Riv. & Trenton Gr. [Sig. fine- 

 lined.] 



tenuifllum var. distans, Hall, 1847, Pal. 

 N. Y., vol. 1, Black Riv. Gr. [Sig. 

 distant.] 



vertebratum, Hall, 1852, Pal. N. Y., vol. 



2, Clinton Gr. [Sig. like a back-bone.] 

 whitii, Stokes, 1840, Trans. Geo. Soc, 



2nd series, vol. 5, Clinton Gr. [Ety. 



proper name.] 

 Orthoceras, Breynius, 1732, Dissert. Polyth. 



[Ety. orthos, straight ; keras, horn.] 

 abporme. Hall, 1867, 20th Reg. Rep., 



Niagara Gr. [Sig. out of the usual 



order.] 

 abruptum. Hall, 1852, Pal. N. Y., vol. 



2, Clinton Gr. [Sig. terminating 



suddenly.] 

 acicula. Hall, 1843, 4th Dist. Rep. N. Y., 



Portage Gr. [Sig. a httle needle.] 

 aculeatum. Swallow, 1858, Trans. St. Louis 



Acad. Sci., Coal Meas. [Sig. armed 



with a sharp point.] 

 £egea. Hall, 1862, 15th Keg. Rep., Ham. 



Gr. [Ety. mythological name.] 

 sequalis, Emmons, 1842, Geo. Rep. N. Y., 



Trenton Gr. [Sig. equal.] 

 alienum, Hall, 1867, 20th Reg. Rep., 



Niagara Gr. [Sig. another sort.] 

 allumettense, Billings, 18 57, Rep. of 



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



proper name.] 

 amplicameratum, Hall, 1847, Pal. N. Y., 



vol. 1, Black Riv. & Trenton Gr. [Sig. 



large-chambered. ] 

 anax, Billings, 1875, Can. Nat. & Geol., 



Corniferous Gr. [Ety. mythological 



name.] 



angidatum, (?) Wahlenberg, 1821, Nova. 



Acta., Niagara Gr. See remarks on 



this species by Prof. Hall in 20th Reg. 



Rep. 

 anellum, Conrad, 1843, Proc. Acad. Nat. 



Sci. Phil., Black Riv. & Trenton Gr. 



[Sig. a little ring.] 

 annulatum, Sowerby, 1818, Min. Conch., 



vol. 2, Clinton & Niagara Gr. [Sig. 



ringed.] 

 annulato-costatwm, Meek & Worthen, 1861, 



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



Gr. [Ety. annulatus, ringed ; eostatus, 



ribbed.] This name was preoccupied 



by Boll in 1857. 

 antenor, Billings, 1859, Can. Nat. & Geo., 



vol. 4, Chazy Gr. [Ety. mythological 



name.] 

 anticostiense, Billings, 1857, Rep. of 



Progr., Hud. Riv. Gr. [Ety. proper 



name.] 

 arcuatellum, Winchell, 1862, Am. Jour. 



Sci., 2nd series, vol. 33, Marshall Gr. 



[Sig. small and arched.] 

 arcuoliratum, Hall, 1847, Pal. N. Y., vol. 



1, Black Riv. & Trenton Gr. [Sig. 



in arched ridges.] 

 arenosum. Hall, 1859, Pal. N. Y., vol. 3, 



Oriskany sandstone. [Sig. sandy.] 

 atticus, Billings, 1865, Pal. Foss., Quebec 



Gr. [Ety. proper name.] 

 autolycus, Billings, 1862, Pal. Foss., Que- 

 bec Gr. [Ety. mythological name.] 

 baeki, Stokes, 1840, Geo. Trans., 2nd ser., 



vol. 4, Trenton Gr. See Geo. Sur. 



111., and see Ormoceras backi. 

 baculum. Meek, 1860, Proc. Acad. Nat. 



Sci., Low. Carb. [Sig. a staff or 



cudgel.] 

 baculum, Hall, 1862, 15th Reg. Rep., 



Schoharie grit. The name was pre- 

 occupied, 

 balteatum, Billings, 1857, Rep. of Progr., 



Hud. Riv. Gr. [Sig. belted.] 

 barquianum, Winchell, 1862, Am. Jour. 



Sci., 2nd series, vol. 33, Marshall Gr. 



[Ety. proper name.] 

 bebryx, Hall, 1876, Illust. Devonian Foss., 



Ham. Gr. [Ety. proper name.] 

 hecki, Billings, 1859, Can. Nat. & Geol., 



vol. 4, Calciferous Gr. [Ety. proper 



name.] 

 bellatulum, Billings, 1866, Catal. Sil.Foss. 



Antic, Clinton Gr. [Sig. pretty, neat.] 

 bilineatum. Hall, 1847, Pal. N. Y., vol. 1. 



Chazy, Black Riv., Trenton and Hud. 



Riv. Gr. [Sig. double-lined.] 

 bilineatum. var. a. Hall, 1847, Pal. N. Y., 



vol. 1, Trenton Gr. 

 brongniarti, Troost, 1838, (Oonotubularia 



brongniarti) Mem. Soc. Geo. de France, 



3, Low. Sil. [Ety. proper name.] 

 brontes, Billings, 1866, Catal. Sil. Foss. 



Antic, Niagara Gr. [Ety. mytho- 

 logical name.] 

 bucklandi, Billings, 1857, Rep. of Progr., 



Up. Sil. [Ety. proper name.] 



