35 Bulletin 38 ' 65 



Distribution. — Shores of Gulf of Mexico from Sarasota, 

 West Fla., to Yucatan, 3-5 fms. Pliocene, Caloosahatchie 

 beds, Fla. 

 al bin odata Reeve, Zool. Proc, 6, 1846; Tryon, Man., 6, p. 197, 

 pi. 14, f. 5, 1884; Ball, Bull. 37, U. S. N. M., p. 96, '89. 



Distribution. — Charlotte Harbor, West Fla., to Santo 

 Domingo. 



haliostrephis Dall, Bull. M. C. Z., 18, p. 86, pi. 13, f. 3, 1889; 

 Bull. 37, U. S. N. M., p. 96, pl. 13, f- 3, '89- 



Distribution. — Gulf of Mexico, West of Florida, 84 fms. 



acestra Dall, Bull. 37, U. S. N. M., p. 96, pl. 10, f. 7, '89. 



Distribution. — West Florida to Grenada 161-400 fms. 



pharcida Dall, Bull. M. C. Z., 18, p, 88, pl. 12, f. 2, 1889; Bull. 

 37, p. 96, pl. 12, f. 2, '89. 

 exasperata Dall. Not of Reeve. 



Distribution. — Gulf of Mexico, west of Florida, 229 fms. 

 Also East Fla. to Barbados 150-1002 fms. 



tristicha Dall, Bull. M. C. Z.. 18, p. 88, 1889; Bull. 37, p. 98, 

 1889. 



Distribution. — Three stations Gulf of Mexico between Mis- 

 sissippi delta and Cedar Keys, 111-210 fms. Temperature 

 52°-67° F. 



ebur Reeves, Pr. Zool. Soc, p. 116, 1845, {'SiS Pleuroioma) ; 

 Conch. Icon., pl. 30, f. 275, '45; Tryon, Man., 6, p. 188, 

 pl. 13, f. 56, '84; Dall, Bull. 37, U. S. N. M., p. 98, '89. 



Distribution. — Hatteras to Sombrero Isl. Also Gulf of 

 Mexico, West of Florida, Blake Station 10, at 34 fms. 



pagodula Dall, Bull. M. C. Z., 18, p. 90, pl. 13, f. 6, 1889; Bull. 

 37- P- 98, pl. 13, f- 6, '89. 



Distribution. — Gulf of Mexico, West of Florida, 50 fms. 

 Also Barbados. 



