66 MOIvLUSCA OF THE GuLF OF MEXICO 



thea Ball, Pr. U. S. N. M., 6, p. 328, pi. 10, f. 5, 1883; Bull, M. 

 C. Z., 18, p. 91, '89; Bull. 37, U. S. N. M., p. 98, pi. 48, 

 f. I, '89. 



Distribution. — Hatteras to Florida Keys, and West Florida 

 at Cedar Kej^s, 3-15 fms. 



Note. — T'\i^V2,x\Q.\.j carminura Dall (Bull. M. C. Z., 18, p. 

 91, 1889) was dredged in Gulf of Mexico, U. S. Fish Com. 

 Station 2402 at 1 1 1 fms. 



simpsoni Dall, Pr. Davenport Acad. Sci., 5, p. 54, 1887, (as 

 Pleurotoma); Bull. M. C. Z., 18, p. 91, 1889. 



Distribution. — Hatteras to Tampa Bay, West Florida, 15- 

 18 fms. 



lissotropis Dall, Bull. M. C. Z., 9, p. 58, Ang. 1881; 18, p. 91, 

 pi. II, f. 3, 4, 1889; Bull. 37, p. 98, pi. II, f. 3, 4, '89. 



hypsela Watson, Jour. Linn, Soc, 15, p. 433, Oct. 1881; Chall. 

 Gastr., p. 341, pi. 21, f. 4, 1885. 



Distribution. — Gulf of Mexico, West of Florida at 220 fms. 

 Also Antillean. Variety perpolita Dall (Tr. W. Inst., 3, p. 



36, '90), Caloosahatchie Pliocene. 



dalli var. cestrota Dall, Bull. M. C. Z., 18, p. 92, 1889; Bull. 



37, p. 98, '89. 



Distribution. — Between the Mississippi delta and Cedar 

 Keys, at 196 fms. Typical dalli Verrill, ranges from 

 Martha's Vineyard to Delaware Bay. 



nuc5eata Dall, Bull. M. C. Z., 9, p. 62, '81; iS, p. 92, pi. 11, f. 



1, 1889. 



Distribution. — Gulf of Mexico, 229-339 fms. Also Antillean. 

 Pleurotoma amblia Watson may be a synonym. 



verrilli Dall, Bull. M. C. Z., 9, p. 68, 1881: 18, p, 93, pi. 11, f. 



2, 1889; Bull. 37, p. 98, pi. II, f. 2, '89. 



Distribution. — Gulf of Mexico, West of Florida, 220-310 fms. 



