85 Bulletin 38 11'"^ 



Ti-yon, Man,, 3, p. 42, pi. 22, f. 38, 1881; Dall, Bull, 37, 

 U. S. N. M., p. 132, '89, (as Gyrincum). 



Distribution. — Hatteras to the Antilles. Variety cuba^iiana 

 d'Orbign}^, dredged on Arrowsmith bank, Yucatan, also off 

 Ke}^ West and Cuba. 



Genus DISTORTIO Bolten 



reiicuiatus Link, Besclir. Rostock Samml., 3, p. 122, 1807, (as 

 Distortrix); Dall, Bull. 37, U. S. N. M., p. 132, '89; Dall 

 and Simpson, Bull. U, S. Fish Com., i, p. 416, 1901; Mitch- 

 ell, List Tex. Shells, p. 11. 



Distribution. — Hatteras to Barbados, West Florida and 

 Mustang Island, Texas, 22-154 ^i^^s. 



reiicuiatus var. ciathratus Lamarck, An. s. Vert., 7, p. 186.1822,, 

 Inc. Me'th. , pi. 413. f. 4, (as Triton); Dall and Simpson, 

 Bull. U. S. Fish Com., i, p. 416, 1901. 



Distribution. — Porto Rico and Gulf of Mexico near Key 

 West (dredged by U. S. Fish Com.), also at Chandeleurs, 

 La. Pleistocene, New Orleans pumping station No. 7. 



Genus COLUBRAR^A Schumacher 



lanceolata Menke, Synopsis, p. 87, 1828, (as Ranclla); Reeve, 

 Conch. Icon., 2, pi. 18, f. 79, 1844, (as Triton); Kuster, 

 Conch. Cab., pi. 65, f. 8; Tryon, Man., 3, p. 27, pi. 16, f. 

 162, 1881; Dall, Bull. 37, U. S. N. M., p. 132, '89; Dall 

 and Simpson, Bull. U. S. Fish Com., i, p. 416, 1901. 



Distribution. — Hatteras to Barbados and Vera Cruz on the 

 Gulf coast. Genotype 



testacea Moerch, Yoldi Cat., 107, (asTriton); Mai. Blatt., 24, p. 

 25; Tryon, Man., 3, pi. 14, f. 128, 1881; Dall, Bull. 37, U. 

 S. N. M., p. 132, '89; Tr. W. I. S., 3, p. 161, 1890. 



Distribution. — Hatteras to Sombrero, and Texas region of 

 the Gulf of Mexico. Pliocene, Caloosahatchie River, West 

 Florida. 



