380 



BRACHIOPODA. 



[STR. 



ridge; cardinal process in the dorsal 

 valve bifurcated from its origin, and di- 

 rected backward beneath the area of 

 the ventral valve; on the lower side 

 of the ventral area a bilobed process is 

 embraced by the divisions of the cardi- 

 nal process of the dorsal valve. Type 

 S. demissa. 



sequicostata, Swallow, 1860, Trans. St. 

 Louis Acad. Sci., vol. 1, p. 639, 

 Ham. Gr. 



altidorsata, Swallow, I860, Trans. St. 

 Louis Acad. Sci., vol. 1, p. 637, 

 Ham. Gr. 



alveata, Hall, 1863, 16th Rep. N. Y. Mus. 

 Nat. Hist., p. 36, and Pal. N. Y., vol. 4, 

 p. 81, Schoharie grit. 



ampla, see Strophonella ampla. 



arcuata, Hall, 1858, Geo. of Iowa, p. 492, 

 Ham. Gr. 



becki, Hall, 1857, 10th Rep. N. Y. Mus. 

 Nat. Hist., p. 52, and PaJ. N. Y., vol. 3, 

 p. 191, Low. Held. Gr. 



boonensis, Swallow, 1860, Trans. St. Louis 

 Acad. Sci., vol. 1, p. 638, Ham. Gr. 



cxlata, see Strophonella caelata. 



callawayensis, Swallow, 1860, Trans. St. 

 Louis Acad. Sci., vol. 1, p. 638, Ham. Gr. 



callosa, Hall, 1863, 16th Rep. N. Y. Mus. 

 Nat. Hist., p. 36, and Pal. N. Y., vol. 4, 

 p. 82, Schoharie grit. 



calvini, S. A. Miller, 1883, 2d Ed. Am. Pal. 

 Foss, p. 298, Upper Helderberg Gr. 

 Proposed instead of S. quadrata, Cal- 

 vin, 1878, in Bull. U. S. Geo. Sur. Terr., 

 vol. 4, No. 3, p. 728, which was preoc- 

 cupied. 



canace, Hall & Whittield, 1873, 23d Rep. 

 N. Y. Mus. Nat. Hist., p. 236, Che- 

 mung Gr. 



cavumbona, see Strophonella cavumbona. 



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

 110, Chemung Gr. 



cincta, Winchell, 1866, Rep. Low. Penin. 

 Mich., p. 93, Ham. Gr. 



concava, Hall, 1857, (Strophomena con- 

 cava,) 10th Rep. N. Y. Mus. Nat. Hist., 

 p. 115, and Pal. N. Y., vol. 4, p. 96, 

 Cornif. and Ham. Grs. 



costata, Owen, 1852, Geo. Sur. Wis., Iowa, 

 and Minn., p. 585, Devonian. 



crebristriata, Conrad, 1842, (Strophomena 

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

 8, p. 254, and Pal. N. Y., vol. 4, p. 86, 

 Schoharie grit. 



cymbiformis, Swallow, 1860, Trans. St. 

 Louis Acad. Sci., vol. 1, p. 635, 

 Ham. Gr. 



demissa, Conrad, 1842, (Strophomena de- 

 missa,) Jour. Acad. Nat. Sci., vol. 8, p. 

 258, and Pal. N. Y., vol. 4, p. 81, Scho- 

 harie grit, Cornif., Ham., and Che- 

 mung Grs. 



erratica, Winchell, 1866, Rep. Low. Pen- 

 insula Mich., p. 93, Ham. Gr. 



feildeni, Etheridge, 1878, Quar. Jour. Geo. 

 Soc., vol. 34, p. 598, Up. Sil. 



fragilis, Hall, syn. for Strophodonta per- 

 plana. 



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



p. 483, Low. Held. Gr. 

 headleyana, Hall, 1857, N. Y. Mus. Nat. 



Hist., p. 49, and Pal. N. Y., vol. 3, p. 



185, Low. Held. Gr. 

 hemispherica, Hall, 1857, (Strophomena 



hemispherica,) 10th Ren. N. Y. Mus. 



Nat. Hist., p. 113, and Pal. N. Y., vol. 



4, p. 90, Schobarie grit and Cor- 

 nif. Gr. 

 hybrida, Hall & Whitfield, 1873, 23d Rep. 



N. Y. Mus. Nat. Hist., p. 239, Che- 



mung Gr. 

 imitata, Winchell, 1866, Rep. Low. Penin. 



Mich., p. 93, Ham. Gr. 

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



Mus. Nat. Hist., p. 113, and Pal. N. Y., 



vol. 4, p. 87, Schobarie grit and Cor- 

 nif. Gr. 

 insequistriata, 



Conrad, 1842, 



(Strophomena 



i n se quistriata, ) 



Jour. Acad. 



Nat. Sci., vol. 8, 



p. 254, and Pal. 



N. Y., vol. 4, p. 



93, Cornif and 



Ham. Grs., Mos- 

 cow shales. 

 indenta, Conrad, 1838, (Lepteena indenta,) 



Ann. Rep., N. Y. p. 117, Low Held. Gr. 



Not properly defined, 

 inflexa, Swallow, 1860, Trans. St. Louis 



Acad. Sci., vol. 1, p. 637, Ham. Gr. 

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



p. 482, Oriskany sandstone, 

 iowensis, Owen, 1852, Geo. Sur. Wis., 



Iowa, and Minn., p. 585, Devonian, 

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



108, Cornif., Ham. and Tully Grs. 



(Changed from textilis, in the corri- 

 genda and index.) 

 kemperi, Swallow, 1860, Trans. St. Louis 



Acad. Sci., vol. 1, p. 636, Ham. Gr. 

 leavemvorthana, see Strophonella leaven- 



worthana. 



lepida, Hall, syn. for S. nacrea. 

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



Mus. Nat. Hist., p. 55, and Pal. N. Y., 



vol. 3, p. 415, Oriskany sandstone, 

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



Mus. Nat. Hist., p. 54, and Pal. N. Y., 



vol. 3, p. 414, Oriskany sandstone, 

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



Mus. Nat. Hist., p. 54, and Pal. N. Y., 



vol. 3, p. 411, Oriskany sandstone, 

 mucronata, Conrad, 1842, (Strophomena 



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



8, p. 257, and Pal. N. Y., vol. 4, p. Ill, 



Chemung Gr. 

 nacrea, Hall, 1857, (Strophomena nacrea,) 



10th Rep. N. Y. Mus. Nat. Hist., p. 144, 



and Pal. N. Y., vol. 4, p. 104, Cornif. 



and Ham. Grs. 

 navalis, Swallow, 1860, Trans. St. Louis 



Acad. Sci., vol. 1, p. 635, Ham. Gr. 

 parva, Owen, 1852, Geo. Sur. Wis., 



Iowa, and Minn., p. 584, Ham. Gr. 



