BRACHIOPODA. 



127 



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



3, Low. Held. Gr. [Ety. planus, level ; 



conveims, convex.] 

 pleiopleura, Conrad, 1841, (Atrypa pleio- 



pleura) Ann. Bep. N. Y., Oriskany 



sandstone. [Sig. wide-ribbed.] 

 plena. Hall, 1847, (Atrypa plena) Pal. N. 



Y., vol. 1, Chazy Gr. [Sig. full, large.] 

 plicata. Hall, 1852, (Atrypa plicata) Pal. 



N. Y., vol. 2, Medina Gr. [Sig. plaited, 



folded.] 

 plicatella. Hall, 1852, (Atrypa plicatella) 



Pal. N. Y., vol. 2, Niagara Gr. [Sig. 



having small plications.] 

 plicatula. Hall, 1843, (Atrypa plicatula) 

 •Geo. Rep. 4th Dist. N. Y., Clinton 



Gr. [Sig. having little plications.] 

 plicifera, Hall, 1847, (Atrypa plicifera) 



Pal. N. Y., vol. 1, Chazy Gr. [Sig. 



bearing plications.] 

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



Oriskany sandstone. [Sig. principal, 



chief.] 

 prolifica, see Stenoschisma proliflcum. 

 pugnus, Martin, 1809, Petrif. Derb., Low. 



Garb. [Sig. the fist.] 

 pustulosa. White, 1860, Bost. .Tour. Nat. 



Hist., vol. 7, Burlington Gr. [Sig. 



pustulose.] 

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



3, Low. Held. Gr. [Sig. made like a 



pyramid.] 

 pyrrha, Billings, 1866, Catal. Sil. Foss. 



Antic, Anticosti Gr. [Ety. mytho- 

 logical name.] 

 quadricostata. Hall, 1843, (Atrypa quadri- 



costata) Geo. Rep. 4th Dist. N. Y., 



Genessee slate. [Sig. four-ribbed.] 

 quadricostata, Hall, 1852, (Atrypa quadri- 

 costata) Pal. N. Y., vol. 2, Clinton Gr. 



This name was preoccupied, 

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



Oriskany sandstone. [Ety. proper 



name.] 

 recurvirostra. Hall, 1847, (Atrypa recur- 



virostra) Pal. N. Y., vol. 1, Black Riv. 



to Hud. Riv. Gr. [Sig. bent-beaked.] 

 reticulata, see Eichwaldia reticulata. 

 ricinula, Hall, 1858, Trans. Alb. Inst., 



vol. 4, Warsaw Gr. [Sig. a little tick.] 

 ringens, Swallow, 1860, Trans. St. Louis 



Acad. Sci., Low. Carb. [Sig. gaping, 



having an open orifice.] 

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



(Atrypa robusta) Clinton Gr. [Sig. 



robust.] 

 royana, see Stenoschisma royanum. 

 ridleyana, Safford, 1869, Geo. of Tenn. 



Not defined, 

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



Held. Gr. [Sig. rude, not fashioned.] 

 rugosa. Hall, 1852, (Atrypa rugosa) Pal. 



N. Y., vol. 2, Niagara Gr. [Sig. 



wrinkled.] 

 saflFordi, Hall, 1860, Can. Nat. & Geo., 



vol. 5, Low. Held. Gr, [Ety. proper 



name.] 



sageriana, Winchell, 1862, Proc. Acad. 

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

 name.] 



sappho, see Stenoschisma sappho. 



semiplicata, Conrad, 1841, (Atrypa semi- 

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

 Gr. [Sig. half-folded.] 



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

 Oriskany sandstone. [Sig. divided by 

 septa or partitions.] 



sinuata. Hall, 1860, Can. Nat. & Geo., vol. 

 5, Up. Sil. [Sig. wavy.] . 



sordida, Hall, 1847, (Atrypa sordida) Pal. 

 N. Y., vol. 1, Trenton Gr. [Sig. des- 

 picable, paltry.] 



speciosa, Hall, 1857, 10th Reg. Rep., Oris- 

 kany sandstone. [Sig. beautiful.] 



stephani, see Stenoschisma stephani. 



subcircularis, Winchell, 1862, Proc.Acad. 

 Nat. Sci., Marshall Gr. [Sig. some- 

 what circular.] 



subcuboides. Not an American species. 



subcuneata. Hall, 1856, Trans. Alb. Inst., 

 vol. 4, Warsaw Gr. [Sig. somewhat 

 wedge-shaped.] 



subtrigona, see Camerophoria subtrigona. 



subtrigonalis, Hall, 1847, (Atrypa subtri- 

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

 Gr. [Sig. somewhat triangular.] 



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

 3, Low. Held.Gr. [Sig. grooved along 

 the center of the plications.] 



tennesseensis, Roemer, 1860, Sil. Fauna 

 West Tenn,, Niagara Gr. [Ety. proper 

 name.] 



tethys, see Stenoschisma tethys. 



tetraptyx, Winchell, 1865, Proc. Acad. 

 Nat. Sci., Kinderhook Gr. [Sig. hav- 

 ing four-folds.] 



texiana, Shumard, 1859, Trans. St. Louis 

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

 name.] 



thalia, see Stenoschisma billingsi. 



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

 Low. Held. Gr. [Sig. wider than 

 long.] 



unica, AVinchell, 1865, Proc. Acad. Nat. 

 Sci., Chemung Gr. [Sig. single, alone.] 



unimilcata, see Meristella unisulcata. 



uta, Marcou, 1858, (Terebratula uta) Geo. 

 N. Amer,, Coal Meas. [Ety. proper 

 name.] This was subsequently de- 

 scribed by Swallow as R. osagensis, 



vellicata. Hall, 1859, Pal. K. Y., vol. 3, 

 Low. Held. Gr, [Sig. pinched.] 



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

 Low. Held, Gr. [Sig. bulging out, 

 bellving.] 



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

 TuUy limestone. This was identified 

 by Vanuxem, 1842, Geo. 3rd Dist. N, 

 Y., as Atrypa riihoidcs of Sowerbj'. [Sig, 

 somewhat fair, handsome or pretty.] 



vicina, Billings, 1866, Catal. Sil. Foss. 

 Antic, Anticosti Gr, [Sig. neighbor- 

 ing, near to.] 



