Mollusc A op the Gulf op Mexico no 



Tryon, Man., 9, p. 390, pi. 59, f. 45, '87; Vanatta, Pr. A. 

 N. S. Phila., 55, p. 758, 1903. 



Distribution. — West Indies and Gulf coast, Crooked Island, 

 Calhoun Co., West Fla. (Vanatta). 



eSegasitisSEma d'Orbigny, Moll. Cuba, 2, p. 26, pi. 12, f. 27-29, 

 1853; Tryon, Man., 9, p. 374, pi, 56, f. 51. 1887. 



Distribution — West Indies and Gulf coast, Chandeleurs, 

 La. (Dall). 



sagraiana d'Orbigny, Moll. Cuba, 2, p. 25, pi. 12, f. 4, 5, 1852; 

 Trj^on, Man., 9, p. 384, pi. 57, f. 86, 1887; Dall, Bull. 37, 

 U. S. N. M., p. 150, '89. 



Distribution. — Florida Strait, to Martinique. Also Gulf 

 coast at Vera Cruz, Mex. 



Genus BEi\!TH01^ELLA Dall 



nisonis Dall, Bull. M. C. Z., 18, p. 283, 1889; Bull. 37, U. S. 

 N. M,, p. 150, '89. 



Distribution. — Gulf of Mexico between Mississippi delta and 

 Cedar Keys at 940 fms. 



gaza Dall, Bull. M. C. Z., 18, p. 282, '89; Bull. 37, U. S. N. M., 

 p. 150, pi. 42, f. 5, '89. 



Distribution. — Georgia to Cuba, West Florida and Texas 

 regions of the Gulf. 6-463 fms. 



fischeri Dall, Bull. M. C. Z., 18, p. 282, '89; Bull. 37, U. S. N. 

 M., p, 282, '89. 



Distribution. — Gulf of Mexico between Mississippi delta and 

 Cedar Keys at 940 fms., bottom temperature 39° F. Also 

 off Cuba. 



Genus SKEI^EA Fleming 



pfariorbis Fabricius, Fauna Groenlandica, p. 394, 1780; Gould, 

 Inv. Mass., p. 296, f. 563, 1870; Dall, Bull. 37, U. S. N. 

 M., p. 150, pi. 52, f. 18, 1889; Bush, Tr. Conn, Acad. Sci., 



