GASTEROPODA. 



145 



percarinatus, Conrad, 1842, Jour. Acad. 



Nat. Sci., vol. 8, Coal Meas. [Sig. very 



strongly keeled.] 

 perforatus, syn. for Tremanotus alpheus. 

 perlatus, Conrad, 1842, Jour. Acad. Nat. 



Sci., vol. 8, Coal Meas. [Sig. very 



wide.] 

 platvstoma, Meek & AVorthen, 1868, Geo. 



Sur. 111., vol. 3, Galena Gr. [Sig. 



broad-mouthed.] 

 plenus, Billings, 1874, Pal. Foss., vol. 2, 



Devonian. [Sig. full, large.] 

 profundus, Emmons, Geo. Rep. N. Y., 



Trenton Gr. [Sig. deep.] 

 propinquus, Meek, 1871, Proc. Acad. Nat. 



Sci., Cornif. Gr. [Ety. from close re- 

 semblance to B. newberryi.] 

 punctifrons, Emmons, 1842, Geo. Rep. 



N. Y., Black Riv. & Trenton Gr. [Sig. 



dotted in front.] 

 rudis, Hall, 1862, 15th Reg. Rep., Ham. 



Gr. [Sig. rude, rough.] 

 rugosiusculus, Winchell, 1862, Proc. Acad. 



Nat. Sci., Marshall Gr. [Sig. covered 



with small wrinkles.] 

 scriptiferus, White, 1862, Proc. Bost. Soc. 



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



scriptum, writing; few, to carry.] 

 scissile, Conrad, 1846, Proc. Acad. Nat. 



Sci., vol. 2, Carb. [Sig. cleft, rent.] 

 solitarius, Billings, 1866, Catal. Sil. Foss. 



Antic, Hud. Riv. Gr. [Sig. alone, 



solitary.] 

 stamineus, Conrad, 1842, Jour. Acad. Nat. 



Sci., vol. 8, Low. Carb. [Sig. thready.] 

 stevensanus, McChesney, 1860, Desc. 



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



proper name.] 

 striatus (?), Sowerby, 1839, Murch. Sil. 



Syst., Portage Gr. The name was 



preoccupied by D'Orbigny. 

 sublsevis, Hall, 1856, Trans. Alb. Inst., 



vol. 4, Warsaw Gr. [Sig. somewhat 



smooth.] 

 tukatimu, see Bucania sulcatina. 

 thalia, Hall, 1862, 15th Reg. Rep., Ham. 



Gr. [Ety. mythological name.] 

 tricarinatus, Shumard, 1858, Trans. St. 



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



three-keeled.] 

 trkarinata, Hall, 1876, Illust. Devonian 



Foss., Chemung Gr. The name was 



preoccupied, 

 troosti, Safford, 1869, Geo. Rep. Tenn., 



Nashville Gr. [Ety. proper name.] 



This name was preoccupied by D'Or- 



bignv in 1839. 

 tuber, Hall, 1876, 28th Reg. Rep., Niag- 

 ara Gr. [Sig. a bump or knob.] 

 urei, Fleming, 1828, British Animals, De- 

 vonian. [Ety. proper name.] Amer- 

 ican species. (?) 

 vittatus, svn. for B. carbonarius. 

 volutus, 'Eaton, 1832, Geol. Text-book, 



Up. Sil. [Sig. whorled.] 

 whittleseyi, Winchell, 1865, Proc. Acad. 



Nat. Sci., Cuyahoga shale. [Ety. 



proper name.] 



19 



Bucaxella nana, Meek, 1870, Proc. Am. 



Phil. Soc, vol. 11, Silurian. [Sig. 



dwarfish.] 

 Bucania, Hall, 1847, Pal. N. Y., vol. 1. [Ety. 



bukane, a trumpet.] 

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



Niagara & Guelph Gr. [Sig. narrowed 



or constricted.] 

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



Clinton Gr. [Sig. beautifully dotted.] 

 bidorsata, Hall, 1847, (Bellerophon bidor- 



satus) Pal. N. Y., vol. 1, Trenton Gr. 



[Sig. having a double back.] 

 chicagoensis, McChesney, 1860, New Pal. 



Foss., Niagara Gr. [Ety. proper 



name.] 

 costata, James, 1872, (Cyrtolites costatus) 



Am. Jour. Sci., 3rd ser., vol. 3, Cin'ti 



Gr. [Sig. ribbed, having prominent 



ridges.] 

 crassolaris, McChesney, 1861, New Pal. 



Foss., Niagara Gr. [Ety. crassus, 



thick.] 

 devonica, Hall, 187 2, 24th Reg. Rep., 



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

 expansa, Hall, 1847, (Bellerophon ex- 



pansus) Pal. N. Y., vol. 1, Trenton 



Gr. [Sig. widely-spread.] 

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



Trenton Gr. [Sig. plaited, woven.] 

 lirata, Hall, 1862, Geo. Rep. Wis., Tren- 

 ton Gr. [Sig. furrowed.] 

 pervoluta, McChesney, 1861, New Pal. 



Foss., Niagara Gr. [Sig. very much 



rolled.] 

 profunda, Conrad, 1841, Ann. Rep. N. 



Y., (Euomphalus profundus) Low. 



Held. Gr. [Sig. deep.] 

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



Low. Held. Gr. This name was pre- 

 occupied, 

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



1, Trenton Gr. [Sig. dotted in front.] 

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



Chazy Gr. [Sig. rounded.] 

 rugosa, Emmons, 1856, Am. Geol., Utica 



Gr. [Sig. rugose.] 

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



Clinton Gr. [Sig. full of marks.] 

 sulcatina, Emmons, 1842, (Bellerophon 



sulcatinus) Pal. N. Y., vol. 1, Chazy, 



Black Riv. & Trenton Gr. [Sig. 



small-furrowed.] 

 trilobata, Conrad, 1838, (Planorbis tri- 



lobatus) Ann. Rep. N. Y., Medina 



sandstone & Clinton Gr. [Sig. three- 



lobed.] 

 Bulimella, Hall, 1858, Trans. Alb. Inst., vol. 



4. [Ety. a small Bulirnus.'] This name 



was preoccupied by Pfeiffer in 1852. 

 bulimiformis, see Polyphemopsis bulimi- 



formis. 

 canaiiculata, see Polyphemopsis canali- 



culata. 

 dongata, see Polyphemopsis elongate. 



