BRACHIOPODA. 



117 



acuminata, Billings, 1859, Can. Nat. Geo., 



vol. 4, Chazy Gr. [Sig. sharp-pointed.] 

 acutilirata, Conrad, 1842, (Delthyris acut- 

 ilirata) Jour. Acad. Nat. Sci., vol. 8, 



Cin'ti Gr. [Sig. sharply ridged.] 

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



Trenton Gr. [Sig. equal- valved.] 

 zequivalva, Shaler. The name was pre- 

 occupied. 

 xquivalvis, Hall, 1857, syn. for Orthis eryna. 



Moreover the name was preoccupied. 

 alata, Shaler. The name was preoccu- 

 pied, 

 alsus, Hall, 1863, 16th Reg. Rep., Scho- 

 harie Grit. [Sig. cold. (?)] 

 anticostiensis, syn. for Orthis porcata. 

 apicalis, Billings, 1865, Pal. Foss., vol. 1, 



Quebec Gr. [Sig. sharp-pointed.] 

 arctostriata. Hall, I860, 13th Reg. Rep., 



Ham. Gr. [Sig. closely striated.] 

 armanda, Billings, 1865, Pal. Foss., vol. 



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

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



Low. Held. Gr. [Sig. very-like.] 

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



Devonian. [Ety. proper name.] 

 barabuensis, Winched, 1864, Am. Jour. 

 j Sci. & Arts, 2nd ser., vol. 37, Potsdam 



Gr. [Etv. proper name.] 

 battis, Billings, 1865, Pal. Foss., vol. 1, 



Quebec Gr. [Ety. mythological 



name.] 

 bellarugosa, Conrad, 1843, Proc. Acad. 



Nat. Sci. Phil., vol. 1, Trenton Gr. 



*[Sig. beautifully wrinkled.] 

 bellula, James, 1873, Ohio Pal., vol. 1, 



Cin'ti Gr. [Sig. pretty.] 

 biforata, Schlotheim, 1820, (Terebratu- 



lites biforatus) Petrefact, Trenton 



& Hud. Riv. Gr. [Sig. two-holed or 



double-doored.] 

 billingsi, Hartt, 1868, Acad. Geol., St. 



John's Gr. [Ety. proper name.] 

 biloba, Linnaeus, 1749, (Anomia biloba) 



Linne. Syst., Niagara Gr. [Sig. two- 



lobed.] 

 bilobata, Conrad, 1838, (Delthyris bilo- 



bata) Ann. Rep. N. Y., Low. Held. 



Gr. The name was preoccupied by 



Sowerby. 

 bisulcata, see Camarella bisulcata. 

 borealis, Billings, 1859, Can. Nat. Geo., 



vol. 4, Chazy & Trenton Gr. [Sig. 



northern.] 

 carbonaria, Swallow, 1858, syn. for Orthis 



pecosi. 

 carinata, Hall, 1843, Geo. Rep. 4th Dist. 



N. Y., Portage & Chemung Gr. [Sig. 



keeled.] 

 carleyi, svn. for Orthis retrorsa. 

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



1, Hud. Riv. Gr. [Ety. centrum, 



center; lineatus, striated.] 

 circulus, Hall, 1843, Geo. Rep. 4th Dist. 



N. Y., Clinton Gr. [Sig. a circle.] 

 clarkensis, Swallow, 1863, Trans. St. 



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



proper name.] 



cleobis, Hall, 1863, 16th Reg. Rep., Onon- 

 daga limestone & Up. Held. Gr. [Ety. 

 mythological name.] 



clytie, Hall, 1861, 14th Reg. Rep., Cin'ti 

 Gr. [Ety. mythological name.] 



coloradoensis, Shumard, 1860, Trans. St. 

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

 proper name.] 



coloradoensis, Meek, 1870, see 0. desmo- 

 pleura. 



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

 Low. Held. Gr. [Sig. handsome.] 



cooperensis, Swallow, 1863, Trans. St. 

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

 proper name.] 



corinna, Billings, 1865, Pal. Foss., vol. 1, 

 Quebec Gr. [E«ty. mythological 

 name.] 



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

 Chazy Gr. [Sig. ribbed.] 



costata, Hall, 1845. This name was pre- 

 occupied by Sowerby in 1839. 



crassa, Meek, 1874, Cin. Quar. Jour. Sci., 

 vol. 1, Cin'ti Gr. [Sig. thick.] 



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

 Trenton Gr. [Sig. curled.] 



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



3, Oriskany sandstone. [Ety. proper 

 name.] 



cuneata, Owen, 1852, Geo. Sur. Wis., 



Iowa and Minn., Devonian. [Sig. 



wedge-shaped. ] 

 cyclas, Hall, 1860, 13th Reg. Rep., Ham. 



Gr. [Sig. of a round form.] 

 cyclus, syn. for Orthis multisecta. 

 cypha, syn. for Orthis crassa. 

 davidsoni, Verneuil, 1840, Bull. Geol. 



Soc. France, vol. 5, Up. Sil. [Ety. 



proper name.] 

 deflecta, see Streptorhynchus deflectus. 

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



Low. Held. Gr. [Sig. deformed.] 

 delicatula, Billings, 1865, Pal. Foss., vol. 



1, Quebec Gr. [Sig. quite delicate.] 

 dentata, Pander, 1830, (Porambonites 



dentatus) Bietr. Geogn. Russl., Trent. 



and Hud. Riv. Gr. [Sig. toothed.] 

 desmopleura, Meek, 1870, Hayden's Geo. 



Rep., Silurian. [Ety. desmos, a band ; 



pleura, the side.] 

 dichotoma, syn. for Orthis fissicosta. 

 discus, Hall, 1859, Pal. N. Y., vol. 3, Low. 



Held. Gr. [Sig. a quoit.] 

 disparilis, Conrad, 1843, Proc. Acad. Nat. 



Sci., vol. 1, Black Riv. & Trenton Gr. 



[Sig. different.] 

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



4, Warsaw Gr. [Sig. doubtful.] 

 electra, Billings. 1862, Pal. Foss., vol. 1, 



Quebec Gr. [Ety. mythological 



name.] 

 elegantula, Dalman, 1827, Kongl. Yet. 



Acad. Handl., Clinton & Niagara Gr. 



[Sig. quite elegant.] 

 ella, Hall, 1861, 13th Reg. Rep., Cin'ti 



Gr. [Ety. proper name.] 

 emacerata, Hall, 1860, 13th Reg. Rep., 



Cin'ti Gr. [Sig. made- lean.] 



