CLASS PTEKOPODA. 



FAMILY CONULARIID^.—Conularia, Coleoprion. 



FAMILY HYOLITHIDM— Hyolithellus, Hyolithes, Pterotheca, Stenotheca, Theca. 



INCERT.E SEDIS.— Aspidella, Scenella, Tentaculites. 



Aspidella, Billings, 1872, Am. Jour. Sci., 



3rd series, vol. 3. [Ety.' aspidella, a 



little shield.] 

 terranovica, Billings, 1872, Am. Jour. Sci., 



3rd series, vol. 3, Huronian Gr. [Ety. 



proper name.] 

 Clioderma, Hall, 1861, syn. for Pterotheca. 

 attenuate, see Pterotheca attenuata. 

 expansa, see Pterotheca expansa. 

 Coleoprion, Sandberger, 1847, Jahrbuch. 



[Ety. koleos, a sheath ; prion, a saw.] 

 tenuicinctum, Hall, 1876, Illust. Devoni- 

 an Foss., Cornif. & Ham. Gr. [Sig. 



fine-girded.] 

 Conularia, Miller, 1818, in Sowerby's Min. 



Conch., vol. 3. [Ety. conulus', a little 



cone.] 

 asperata, Billings, 1866, Catal. Sil. Foss. 



Antic, Hud. Riv. Gr. [Sig. rough.] 

 byblis, White, 1862, Proc. Bost. Soc. Nat. 



Hist., vol. 9, Chemung Gr. [Ety. 



mythological name.] 

 cayuga, Hall, 1876, Illust. Devonian Foss., 



Ham. Gr. [Ety. proper name.] 

 congregata, Hall, 1876, Illust. Devonian 



Foss., Portage Gr. [Sig. congregated 



together.] 

 continens, Hall, 1876, Illust. Devonian 



Foss., Marcellus shale. [Sig. holding 



together.] 

 crebristriata, Hall, 1876, Illust. Devonian 



Foss., Ham. Gr. [Sig. from the 



crowded stria?.] 

 elegantula, Meek, 1871, Proc. Acad. Nat. 



Sci. Phil., Cornif. Gr. [Sig. quite 



elegant.] 

 gattingeri, Safford, 1869, Geo. of Tenn., 



Trenton Gr. [Ety. proper name.] 

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



Trenton Gr. [Sig. slender.] 

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



Trenton Gr. [Sig. granulated.] 

 hudsoni, Emmons, 1856, Am. Geo., Utica 



Gr. [Etv. proper name.] 

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



Low. Held. Gr. [Ety. proper name.] 

 laqueata, Conrad, 1841, Ann. Rep. N. Y., 



Up. Held. Gr. [Sig. paneled.] 

 lata, Hall, 1859, Pal. N. Y., vol. 3, Oris- 



kanv sandstone. [Sig. broad.] 

 longa, Hall, 1852, Pal. N. Y., vol. 2, Ni- 

 agara Gr. [Sig. long.] 

 marionensis, Swallow, 1860, Trans. St. 



Louis Acad. Sci., Ham. Gr. [Ety. 



proper name.] 



micronema, Meek, 1871, Proc. Acad. Nat. 



Sci. Phil., Waverly Gr. [Sig. small- 

 threaded or lined.] 

 missouriensis, Swallow, 1860, Trans. St. 



Louis Acad. Sci., St. Louis Gr. [Etv. 



proper name.] 

 molaris, White, 1876, Proc. Acad. Nat. 



Sci., Devonian. [Sig. a grinder.] 

 newberryi, Winched, 1865, Proc. Acad. 



Nat.Sci.,Wav. Gr. [Ety. propername.j 

 niagarensis, Hall, 1852, Pal. N. Y., vol. 2, 



Niagara Gr. [Ety. proper name.] 

 osagensis, Swallow, 1863, Trans. St. Louis 



Acad. Sci., Low. Carb. [Ety. proper 



name.] 

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



Tren. Gr. [Sig. covered with papilli.] 

 planocostata, Dawson, 1868, Acad. Geol.", 



Carb. [Sig. plain-ribbed.] 

 pyramidalis, Hall, 1859, Pal. N. Y., vol. 



3, Low. Held. Gr. [Sig. pyramidal.] 

 quadrata, Walcott, 1876, Desc. New Sp. 



Foss., Trenton Gr. [Sig. quadrate.] 

 quadrisulcata, (?) Miller, 1826, Min. 



Conch., Niagara Gr. [Sig. having four 



depressions.] 

 splendida, Billings, 1866, Catal. Sil. Foss. 



Antic, Hud. Riv. Gr. [Sig. splendid.] 

 subcarbonaria, Meek & AVorthen, 1873, 



Geo. Sur. 111., vol. 5, Keokuk Gr. 



[Sig. in Lower Carboniferous rocks.] 

 subulata, Hall, 1858, Trans. Alb. Inst, 



vol. 4, Warsaw Gr. [Sig. awl-shaped.] 

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



1, Trenton & Hud. Riv. Gr. [Ety. 



proper name.] 

 triplicata, Swallow, 1860, Trans. St. Louis 



Acad. Sci., Ham. Gr. [Sig. three- 

 plicated.] 

 undulata, Conrad, 1842, Jour. Acad. Nat. 



Sci., vol. 8, Ham. Gr. [Sig. wavy.] 

 victa, White, 1862, Proc. Bost. Soc. IN at. 



Hist., vol. 9, Burlington Gr. [Sig. 



conquered, suppressed.] 

 Hyolithellus, Billings, 1871, Can. Nat. & 



Geol., vol. 6. [Ety. diminutive of 



Hyolithes.} 

 micans, Billings, 1871, Can. Nat. & Geol., 



vol. 6, Potsdam Gr. [Sig. shining.] 

 Hyolithes, Eichwald. 



aclis, Hall, 1876, Illust. Devonian Foss., 



Ham. Gr. [Sig. a small javelin.] 

 americanus, Billings, 1871, (Theca tri- 

 angularis, Hall) Can. Nat. & Geol., 



vol. 6, Pots. Gr. [Ety. proper name.] 



