370 



BRACHIOPODA. 



[RHY. SCH. 



sappho, see Stenoschisma sappho. 

 Bemiplicata, Conrad, 1841, (Atrypa semi- 



plicata,) Ann. Rep. N. Y., p. 56, and 



Pal. N. Y., vol. 3, p. 224, Low. Held. Gr. 

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



443, Oriskany sandstone, 

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



N. Y., vol. 1, p. 148, Trenton Gr. 

 speciosa, Hall, 1857, 10th Rep. N. Y. St. 



Mus. Nat. Hist., p. 81, and Pal. N. Y., 



vol." 3, p. 444, Oriskany sandstone. 

 gtephani, see Stenoschisma stephani. 

 stricklandi, Sowerby, 1839, (Terebratula 



stricklandi,) Murch. Sil. Syst., p. 631, 



Niagara Gr. 

 subcircularis, Winchell, 1862, Proc. Acad. 



Nat. Sci., p. 408, Marshall Gr. 

 subcuboides. Not an American species, 

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



vol. 4, p. 11, and Geo. Sur. Iowa, p. 



658, Warsaw Gr. 



subtrigona, see Camerophoria subtrigona. 

 subtrigonalis, Hall, 1847, (Atrypa subtri- 



gonalis,) Pal. N. Y., vol. 1, p. 145, Tren- 

 ton Gr. 

 sulcoplicata, Hall, 1857, 10th Rep. N. Y. 



St. Mus. Nat. Hist., p. 76, and Pal. 



N. Y., vol. 3, p. 236, Low. Held. Gr. 

 tennesseensis, Roemer, 1860, Sil. Fauna 



West Tenn., p. 72, Niagara Gr. 

 tethys, see Stenoschisma tethys. 

 tetraptyx, Winchell, 1865, Proc. Acad. 



Nat. Sci., p. 120, Kinderhook Gr. 

 texana, Shumard, 1859, Trans. St. Louis 



Acad. Sci., vol. 1, p. 393, Permian Gr. 

 thalia, see Stenoschisma billings! . 

 thera, Walcott, 1885, Monogr. TJ. S. Geo. 



Sur., vol. 8, p. 223, Subcarboniferous. 

 transversa, Hall, 1857, 10th Rep. N. Y. 



St. Mus. Nat. Hist., p. 74, and Pal. 



N. Y., vol. 3, p. 234, Low. Held. Gr. 

 tuta, S. A. Miller, 1881, Jour. Gin. Soc., 



Nat. Hist., vol. 4, p. 315, Burlington Gr. 

 unica, Winchell, 1865, Proc. Acad. Nat. 



Sci., p. 122, Marshall Gr. 

 unisulcata, see Meristella unisulcata. 

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



N. Amer., p. 58, Coal Meas. This was 



subsequently described by Swallow as 



R. osagensis. 

 vellicata, Hall, 1857, 10th Rep. N. Y. St. 



Mus. Nat. Hist., p. 71, and Pal. N. Y., 



vol. 3, p. 230, Low. Held. Gr. 

 ventricosa, Hall, 1857, 10th Rep. N. Y. 



St. Mus. Nat. Hist., p. 78, and Pal. N. Y., 



vol. 3, p. 238, Low. Held. Gr. 

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



p. 346, Tully limestone. This was 



identified by Vanuxem, 1842, Geo. 3d 



Dist. N. Y., as Atrypa cuboides of 



Sowerby. 

 vicina, Billings, 1866, Catal. Sil. FOPS. 



Antic., p. 44, Anticosti Gr. 

 warrenensis, Swallow, 1860, Trans. St. 



Louis Acad. Sci., vol. 1, p. 653, 



Ham. Gr. 

 wasatchensis, White, 1874, Rep. Invert. 



Foss., p. 19, and Geo. Sur. W. 100th 



Mer., vol. 4. p. 130, Carb. . 



whitiana, S. A. Miller, 1883, 2d Ed. Am. 

 Pal. FOBS., p. 297, Niagara Gr., from 

 Waldron, Indiana. Proposed instead 

 of R. whitii, Hall, 1863, Trans. Alb. 

 Inst., vol. 4, p. 216, and also in 28th 

 Rep. N. Y. St. Mus. Nat. Hist,, p. 164, 

 pi. 26, figs. 23-33, and again in the llth 

 Ann. Rep. Geol. and Nat.. Hist, of In- 

 diana, p. 307, pi. 26, figs. 23-33. 

 whitii, Winchell, 1862, Proc. Acad. Nat. 



Sci., p. 407, Marshall Gr. 

 whitii, Hall, see R. whitiana. 

 wilsoni, Sowerby, 1816, (Terebratula wil- 

 soni,) Min. Conch., vol. 2. p. 38, Niag- 

 ara Gr. 



wortheni, see Camarophoria worth eni. 

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



syn, for Retzia. 

 deweyi, see Retzia deweyi. 

 evax, see Retzia eyax. 

 formosa, see Retzia formosa. 

 lepida, see Retzia lepida. 

 nobilis, see Trematospira nobilis. 

 rectirostra, see Trematospira rectirostra. 

 subglobosa, see Retzia subglobosa. 

 sinuatoL, see Retzia sinuata. 

 RHYNCHOTRETA, Hall, 1879, 28th, Rep. N. 

 Y. St. Mus. Nat, Hist., p. 

 166. [Ety. rhynchos, beak ; 

 tretos, with a hole in it.] 

 Distinguished from Rhyn- 

 chonella by the straight, 

 produced, perforated beak 

 of the ventral valve and 

 divided deltidium, and by 

 the crurae which rise near 

 the dorsal beak, curve into 

 the ventral cavity, and re- 

 curve to the dorsal side. Type R. 

 cuneata. 

 cuneata v a r . 

 americana, 

 Hall, 1879, 

 28th Rep. N. 

 Y. St. Mus. 



167*' 

 Ib7, 



Gr. 



quadriplicata, S. A. Miller, 1875, (Tre- 

 matospira quadriplicata,) Cin. Quar. 

 Jour. Sci., vol. 2, p. 60, Trenton Gr. 



Rhynobolus, Hall, 1871, 23d Rep. N. Y. St. 

 Mus. Nat. Hist., p. 247, syn. for Tri- 

 merella. 

 galtensis, Hall, see Trimerella galtensis. 



SCHIZAMBON, Walcott, 1885, Monogr. U. S. 

 Geo. Sur., vol. 8, p. 69. [Ety. schiza, 

 a cleft ; ambon, the boss of a shield.] 

 Inequivalve, ovate ; valves inarticulate; 

 no area or deltidium ; foramen oblong ; 

 structure calcareo-corneous ; two scars 

 in each valve. Type S. typicalis. 

 typicalis, Walcott, 1885, Monogr. U. S. 

 Geo. Sur., vol. 8, p. 70, Chazy Gr. 



SCHIZOBOLUS, Ulricb, 1886, Cont, to Am. 

 Pal., p. 25. [Ety. schiza, a cleft; 

 Obolus, a genus.] Ventral valve with 

 apex at the terminus of a notch in the 

 posterior margin ; two pair of adductor 



FlO. 607. - 

 Rhyncho- 

 treta cun- 

 eata var. 

 americana 



FlG - 608.-Rhynchotreta 

 quadriplicata. 



