BRACHIOPODA. 



131 



medialis, Hall, 1843, (Delthyris medialis) 

 Geo. 4th Dist. N. Y., Ham. Gr. [Sig. 

 middle.] 



medialis var. eatoni, Hall, 1857, (Spirifer 

 eatoui) 10th Reg. Rep., Ham. Gr. 

 [Ety. proper name.] 



meeki, Swallow, 1860, Trans. St. Louis 

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

 name.] 



meristoides, Meek, 1868, Trans. St. Louis 

 Acad. Sci., Ham. Gr. [Sig. in the 

 form of a shell of the genus Merista.] 



mesocostalis, Hall, 1843, (Delthyris mes- 

 ocostalis and D. acuminata) Geo. 4th 

 Dist. N. Y., Chemung Gr. [Sig. hav- 

 ing middle costee.] 



mesostrialis, Hall, 1843, (Delthvris mes- 

 ostrialis) Geo. 4th Dist. N. Y., Ham. 

 and Chemung Gr. [Sig. having mid- 



rneta, Hall, 1867, 20th Reg. Rep., Niagara 



Gr. [Sig. a pillar in the form of a 



cone.] 

 meiisebachianus, syn.for Spirifera camerata. 

 mexicana, Shumard, 1858, Trans. St. Louis 



Acad. Sci., Permian Gr. [Ety. proper 



name.] 

 missouriensis, Swallow, 1860, Trans. St. 



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



proper name.] 

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



Low. Held. Gr. [Ety. in allusion to 



its small size.] 

 mucronata, Conrad, 1841, (Delthyris mu- 



cronata) Ann. Rep. N. Y., Marcellus 



shale, Ham. Gr. [Sig. sharp-pointed.] 

 multutriata, see Trematospira multistriata. 

 mysticensLs, Meek, 1872, Hayden's Geo. 



Rep., Low. Carb. [Ety. proper name.] 

 neglecta, Hall, 1858, Geo. Rep. Iowa., 



Keokuk Gr. [Sig. overlooked, neg- 

 lected.] 

 niagarensis, Conrad, 1842, Jour. Acad. 



Sat. Sci., vol. 8, Niagara Gr. [Ety. 



proper name.] 

 niagarensis var. oligoptycha, Roemer, 



1860, Sil. Fauna West Tenn., Niagara 



Gr. [Ety. oligos, few; ptyche, a fold.] 

 norwoodiana, Hall, 1858, Trans. Alb. 



Inst., vol. 4, Warsaw Gr. [Ety. proper 



name.] 

 norwoodi, Meek, 1860, Proc. Acad. Nat. 



Sci., Devonian. [Ety. proper name.] 

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



Low. Held. Gr. [Sig. having eight 



costae or folds.] 

 octoplicata, Sowerby, 1827, as identified by 



Hall, syn. for Spiriferina kentuckiensis. 

 opima, Hall, 1858, Geo. Rep. Iowa, Coal 



Meas. [Sig. large.] 

 orestes, Hall, 1873, 23rd Reg. Rep., Che- 

 mung Gr. [Ety. mythological name.] 

 oregonensis, Shumard, 1863, Trans. St. 



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



proper name.] 

 osagensis, Swallow, 1860, Trans. St. Louis 



Acad. Sci., Chemung Gr. [Ety. proper 



name.] 



oweni, Hall, 1857, 10th Reg. Rep., Up. 



Held. Gr. [Ety. proper name.] 

 pachyptei'a, Goldfuss, as identified by 



Conrad in 1839, (Delthyris pachyp- 



tera). Not American, 

 parryana, Hall, 1858, Geo. Rep. Iowa, 



vol. 1, pt. 2, Ham. Gr. [Ety. proper 



name.] 

 peculiaris, Shumard, 1855, Geo. Rep. Mo., 



Chemung Gr. [Sig. peculiar, singu- 

 lar.] 

 perforata, see Trematospira perforata, 

 pinnata, Owen, 1852, Geo. Rep. Wis., 



Iowa & Min., Ham. Gr. [Sig. winged.] 

 percrassa, McCoy, 1855, Brit. Pal. Rocks., 



Sil. Not satisfactorily identified in 



America, 

 perextensa, Meek & Worthen, 1868, Geo. 



Sur. 111., vol. 3, Carb. [Sig. very ex- 

 extended.] 

 (?) perforata, see Trematospira perforata, 

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

 i 3, Low. Held. Gr. [Sig. having very 



thin plates.] 

 perplexa, McChesney, 1860, New Pal. 



Foss., Coal Meas. [Sig. very perplex- 

 ing-] 

 pertenuis, Hall, 1857, 10th Reg. Rep., 



Ham. Gr. [Sig. very slender.] 

 pharovicina, Winchell, 1862, Proc. Acad. 



Nat. Sci., Portage Gr. [Sig. close by 



the light house.] 

 pinonensis, Meek, 1870, Proc. Acad. Nat. 



Sci., Up. Held. Gr. [Ety. proper 



name.] 

 planoconvexa, Shumard, 1855, Geo. Rep. 



Mo., Coal Meas. [Ety. planus, plane; 



convexw, convex.] 

 plena, Hall, 1858, Geo. Rep. Iowa, Bur- 

 lington Gr. [Sig. full, large.] 

 plicata, Vanuxem, 1843, see S. vanuxemi. 

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



Chemung Gr. [Sig. too early, ripe 



before its time.] 

 prolata, Vanuxem, 1842, (Delthyris pro- 



lata) Geo. Rep. N. Y., Chemung Gr. 



[Sig. prolonged.] 

 propinqua, Hall, 1858, Geo. Rep. Iowa, 



Keokuk Gr. [Ety. related to; from 



its resemblance to S. subcuspidata.] 

 prora, Conrad, 1842, (Delthyris prora) 



Jour. Acad. Nat. Sci., vol. 8, Ham. Gr. 



[Sig. the prow of a ship.] 

 protensa, syn. for S. disjuncta. 

 pseudolineata, Hall, 1858, Geo. Rep. 



Iowa, Keokuk Gr. [Sig. false-lined.] 

 pulchra, Meek, 1860, Proc. Acad. Nat. 



Sci., Coal Meas. [Sig. beautiful.] 

 pyramidalw, see Cyrtina pyramidalis. 

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



Oriskany sandstone. [Sig. made like 



a box.] 

 racinensis, McChesney, 1861, Pal. Foss., 



Niagara Gr. [Ety. proper name.] 

 radiata, Sowerby, 1825, Min. Conch., vol. 



5, Niagara Gr. [Sig. radiated.] 



