85 BUI.LETIN 38 Il5 



Tryon, Man,, 3, p. 42, pi. 22, f. 38, 1881; Dall, Bull, 37, 

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



Distribation. — Hatteras to the Antilles. Variety cubaniana 

 d'Orbigny, dredged on Arrowsmith bank, Yucatan, also off 

 Ke}^ West and Cuba. 



Genus DlSTORTfO Bolten 



reticulatys Link, Beschr. 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 f^^s- 



reticuSatus var. ciathratus Lamarck, An. s. Vert., 7, p. 186,1822,, 

 Inc. Me'th. , pi. 413. f. 4, (as Tritoji); 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 C0LU8RARSA Schumacher 



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



tesiacea Moerch, Yoldi Cat., 107, (2isTriton) \ 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. 



