BRACHIOPODA. 



Ill 



magnificus, Billings, 18 72, (Obolellina 



magnifica) Canadian Naturalist, vol. 



7, Black Riv. Gr. [Sig. magnificent.] 

 Discina, Lamarck, 1819, Hist. Nat. Anim. 



sans. Vert. [ Ety. discus, a flat round 



plate ; the termination inns, imply- 

 ing resemblance.] 

 acadica, Hartt, 18(58, Acad. Geol., St. 



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

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



Chemung Gr. [Ety. proper name.] 

 ampla, Hall, 1867, Pal. N. Y., vol. 4, 



Oriskany sandstone. [Sig. full sized.] 



Proposed instead of D. grandis of Hall, 

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



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



capacious.] 

 caputiformis, syn. for D. nitida. 

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



Trenton Gr. [Ety. mythological 



name.] See remarks on D. lamellosa. 

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



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

 convexa, Shumard, 1858, Trans. St. Louis 



Acad. Sci., Coal Meas. [Sig. convex.] 

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



Held. Gr. [Sig. a quoit.] 

 doria, Hall, 1863, 16th Reg. Rep., Ham. 



Gr. [Ety. mythological name.] 

 elmira, Hall, 1863, 16th Reg. Rep., Che- 

 mung Gr. [Ety. proper name.] 

 gallaheri, Winchell, 1865, Proc. Acad. 



Nat. Sci., Marshall Gr. [Ety. proper 



name.] 

 grandis, Vanuxem, 1842, Geo. Rep. 3rd 



Dist. N. Y., Cornif. & Ham. Gr. [Sig. 



great.] 

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



The name was preoccupied. See D. 



ampla. 

 humilis, Hall, 1863, 16th Reg. Rep., 



Marcellus slate & Ham. Gr. [Sig. 



dwarfish.] 

 inutilis, Hall, 1863, 16th Reg. Rep., Pots- 

 dam Gr. [Sig. trifling.] 

 lamellosa, Hall, 1847, (Orbicula lamellosa). 



The name was preoccupied by Brod- 



erick in 1833. Billings has described 



it as D. circe. 

 lodensis, Vanuxem, 1842, (Orbicula lo- 



densis) Geo. Rep. 3rd Dist. N. Y., 



Genessee slate. [Ety. proper name.] 

 media, Hall, 1863, 16th Reg. Rep., Ham. 



and Chemung Gr. [Sig. intermediate.] 

 minuta, Hall, 1843, (Orbicula minuta) 



Geo. Rep. 4th Dist. N. Y., Marcellus 



shale. [Sig. very small.] 

 missouriensis, Shumard, 1858, Trans. St. 



Louis Acad. Sci., Coal Meas. Syn. for 



D. nitida. 

 neglecta, Hall, 1863, 16th Reg. Rep., 



Chemung Gr. [Sig. overlooked.] 

 newberryi, Hall, 1863, 16th Reg. Rep., 



Chemung Gr. [Ety. proper name.] 

 nitida, Phillips, 1836, (Orbicula nitida) 



Geo. of York., Coal Meas. [Sig. neat, 



smooth.] 



patellaris, Winchell, 1863, Proc. Acad. 

 Nat. Sci., Chemung Gr. [Sig. a small 

 plate.] 



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

 Trenton Gr. [Ety. mythological 

 name.] 



pleuritis, Meek, 1875, Ohio Pal., vol. 2, 

 Waverly Gr. [Ety. from pleuron, the 

 side.] 



randalli, Hall, 1863, 16th Reg. Rep., Ham. 

 Gr. [Ety. proper name.] 



seneca, Hall, 1863, 16th Reg. Rep., Ham. 

 Gr. [Ety. proper name.] 



subtrigonalis, McChesney, 1865, Desc. 

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

 somewhat triangular.] 



tenuilamellata, Hall, 1852, (Orbicula ten- 

 uilamellata) Pal. N. Y., vol. 2, Niag- 

 ara Gr. [Sig. having very thin plates.] 



tenuilamellata, var. subplana, Hall, 1860, 

 Can. Nat. and Geol., vol. 5, Up. Sil. 

 [Sig. somewhat smooth.] 



trigonalis, syn. for D. subtrigonalis. 



truncata, Hall, 1862, 16th Reg. Rep., 

 Chemung Gr. and Genessee slate. 

 [Sig. truncated.] 



tullia, Hall, 1863, 16th Reg. Rep., Tully 

 limestone. [Ety. proper name.] 



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

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

 Eatonia, Hall, 1857, 10th Reg. Rep., [Ety. 

 proper name.] 



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

 Low. Held. Gr. [Sig. eminent, stand- 

 ing out.] 



medialis, Vanuxem, 1843, (Atrypa medi- 

 alis) Geo. Rep. 3rd Dist. N. Y., Low. 

 Held. Gf. [Sig. middle.] 



peculiaris, Conrad, 1841, (Atrypa peculi- 

 aris) Ann. Rep. N. Y., Oriskany and 

 Low. Held. Gr. [Sig. peculiar.] 



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

 Oriskany sandstone. [Sig. a dwarf or 

 pigmy.] 



singularis, Vanuxem, 1843, (Atrypa sin- 

 gularis) Geo. Rep. 3rd Dist. N. Y., 

 Low. Held. Gr. [Sig. singular.] 



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

 Oriskany sandstone. [Sig. marked 

 with depressions.] 



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

 Oriskany sandstone. [Ety. proper 

 name.] 

 Eichwaldia, Billings, 1858, Rep. of Progr. 

 [Ety. proper name.] 



anticostiensis, Billings, 1866, Catal. Sil. 

 Foss. Antic, Hud. Riv. Gr. [Ety. 

 proper name.] 



concinna, Hall, 1868, 20th Reg. Rep., Ni- 

 agara Gr. [Sig. beautiful.] 



coralifera, Hall, 1852, (Atrypa coralifera) 

 Pal. N. Y., vol. 2, Niagara Gr. Prof. 

 Davidson regards this shell as identi- 

 cal with E. Capewelli, which was de- 

 scribed in 1848, in Bull. Soc. Geol. 

 France, vol. 3. [Sig. coral-bearing.] 



gibbosa, Hall, 1868, 20th Reg. Rep., Ni- 

 agara Gr. [Sig. gibbous.] 



