366 



BRACHIOPOA. 



[PSE. RET. 



trmicatua, see Productella truncata. 

 lubulospinus, McChesney. Syn. for. P. 



semipunctatus. 

 viminalis, White, 1862, Proc. Bost. Soc. 



Nat. Hist., vol. 9, p. 29, Burling- 

 ton Gr. 

 vittatus, Hall, 1858, Geo. Rep. Iowa, p. 



639, Keokuk Gr. 

 wabashensis, Norwood & Pratten, 1854, 



Jour. Acad. Nat. Sci., vol. 3, p. 13, Coal 



Meas. 

 wilbericmus, McChesney, syn. for P. ne- 



braskensis. 

 wortheni, Hall, 1858, Geo. Rep. Iowa, p. 



635, Keokuk Gr. 

 PSKUDOCRANIA, McCoy, 1851, Ann. and Mag. 



Nat. Hist., 2d series, vol. 8, p. 387. 



yEty. pseudo, false; Crania, a genus.] 

 hell slightly inequivalve, free ; each 

 valve depressed, subconical ; dorsal 

 valve with or without a small cardinal 

 area; internally, margin broad, flat, 

 smooth, or minutely striated concen- 

 trically ; anterior pair of muscular im- 

 pressions much larger than the poste- 

 rior pair ; pallial impressions numerous, 

 linear, not interrupted along the mid- 

 dle. Type P. divaricata. 



anomala, Winchell, 1866, Rep. Low. Pen. 



Mich., p. 92, Ham. Gr. 

 RENSSEL^ERIA, Hall, 1859, Pal. N. Y., vol. 3, 

 p. 454. [Ety. proper name.] Inequi- 

 valve, oval, ovoid, or snborbicular, 

 elongated, rarely transverse, sometimes 

 subtrigonal, gibbous or ventricose ; 

 no mesial fold or sinus ; beak prominent , 

 incurved, foramen terminal ; articula- 

 tion by two widely separated teeth and 

 sockets; surface striated; structure 

 punctate. Type R. ovoides. 



sequiradiata, Conrad, 1842, (Atrypa 

 sequiradiata,) Jour. Acad. Nat. Sci., vol. 

 8, p. 266. and Pal. N. Y., vol. 3, p. 255, 

 Low. Held. Gr. 



condoni, McChesney, 1861, New Pal. Foss., 

 p. 85, Oriskany sandstone. 



cumberlandise, Hall, 1857, (Meganteris 

 cumberlandise,) 10th Rep. N. Y. St. 

 Mus. Nat. Hist., p. 101, and Pal. N. Y., 

 vol. 3, p. 464, Oriskany sandstone. 



elliptica, Hal), 1857. (Meganteris elliptica,) 

 10th Rep. N. Y. St. Mus. Nat. Hist., p. 

 98, Low. Held. Gr. 



elongata, see Amphigenia elongata. 



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

 p. 463, Oriskany sandstone. 



johanni, Hall, 1867, Pal. N. Y., vol. 4, p. 

 385, Up. Held. Gr. 



Isevis, Hall, 1857, (Meganteris Ise vis,) 10th 

 Rep. N. Y. St. Mus. Nat. Hist., p. 99, 

 Low. Held. Gr. 



tevis, Meek, 1868, Trans. Chi. Acad. Sci., 

 p. 108. This name was preoccupied. 



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

 3, p. 461, Oriskany sandstone. 



mutabilis, Hall, 1857, (Meganteris muta- 

 bilis,) 10th Rep. N. Y. St. Mus. Nat. 

 Hist., p. 97, Low. Held. Gr. 



ovalis, Hall, 1857, (Meganteris ovalis,) 



10th Rep. N. Y. St. Mus. Nat. Hist., p. 



101, and 



Pal. N. Y., 



vol. 3, p. 



458, Oris- 



kany sand- 



stone. 

 ovoides, Ea- 



ton, 1832, 



(Terebratu- 



la ovoides,) 



Geo. Text- 



book, p. 45, 



and Pal. N. 



Y., vol. 3, 



p. 456, Oris- 



kany sand- 



stone. 



sues sana, 

 1857, 



Hall, 



FIG. 604. 

 Ret/cia evax. 



10th Rep. N. Y. St. Mus. Nat. Hist., 

 p. 100, and Pal. N. Y., vol. 3, p. 459, 

 Oriskany sandstone. 



portlandica, Billings, 1863, Proc. Port. 

 Soc. Nat. Hist., vol. 1, p. 115, Low. 

 Held. Gr. 



RETZIA, King, 1850, Mono- 

 graph of Permian Foss., 

 p. 137. [Ety. proper 

 name.] Longitudinally 

 oval, ribbed, with large 

 punctures ; foramen in 

 ventral valve; area tri- 

 angular ; fissure closed. 

 Type R. adrieni. 

 altirostris, White, 1862, Proc. 

 Bost. Soc. Nat. Hist., vol. 

 9, p. 28, Marshall Gr. 

 compressa, Meek, 1864, Pal. California, 



vol. 1, p. 14, Coal Meas. 

 deweyi, Hall, 1857, (Waldheimia deweyi,) 

 10th Rep. N. Y. St. Mus. Nat. Hist., p. 

 89, Low. Held. Gr. 

 dubia, Billings, 1863, Proc. Port. Soc. Nat. 



Hist., vol. 1, p. 113, Low. Held. Gr. 

 electta, Billings, 1863, Proc. Port. Soc. Nat. 



Hist., vol. 1, p. 114, Low. Held. Gr. 

 eugenia, Billings, 1861, Can. Jour., vol. 6, 



p. 147, Ham. Gr. 



evax, Hall, 1863, (Rhynchospira evax,) 



Trans. Alb. Inst., vol. 4, p. 213, and Rep. 



Geol. and Nat. Hist. Ind., Niaeara Gr. 



formosa, Hall, 1857, (Waldheimia for- 



mosa,) 10th Rep. N. Y. St. Mus. Nat. 



Hist., p. 88, Low. Held. Gr. 



hippolyte, Billings, 1863, Proc. Port. Soc. 



Nat. Hist., vol. 1, p. 112, Low. Held. Gr. 



lepida, Hall, 1860, (Rhynchospira lepida,) 



13th Rep. N. Y. St. Mus. Nat. Hist., 



p. 83, and Pal. N. Y., vol. 4, p. 275, 



Ham. Gr. 



marcyi, Shumard, 1854, (Terebratula mar- 

 cyi,) Marcy's Exp. Red Riv., p. 177, 

 Kaskaskia Gr. 



maria, Billings, 1863, Proc. Port. Soc. Nat. 

 Hist., vol. 1, p. 112, Low. Held. Gr. 



