ISO MOLLUSCA OF THE GULF OF MEXICO 120 



U. S.N. M,, p. 156, '89; Dall and Simpson, Bull. U. S. Fish 

 Com., I, p. 439, 1901. 



Distribution. — Florida Keys to Porto Rico and Brazil. Also 

 Texas region of the Gulf of Mexico. West Fla. (?). 



brisnnea Linck, Beschr. der Rostock Sammlung,2, p. 140, 1807; 

 Dall, Bull. 37, U. S. N. M., p. 156, '89. 



mamillaris Lamarck, Anim. s. Vert., 6, pt. 2, p. 197, '22, (as 

 Natica), Tryon, Man,, 8, p. 43, pi. 18, f. 74, '86; Dall and 

 Simpson, Bull. U. S. Fish Com., i, p. 439, 1901. 



Distribution. — Florida Keys to Trinidad Island and Texas 

 region of the Gulf of Mexico. 



Genus SSNUM Bolten 



prespectivum Sa}^ Amer. Conch., p. 175, pi. 25, {diS Sigaretus); 

 Holmes, Post-PL Foss. S. Car., p. 81, pi. 12, f. 16, '6o;Tryon, 

 Man., 8, p. 57, pi. 24. f. 61, 64, '86; Dall, Bull. 37, U. S. 



N. M., p. 156, '89; Vauatta, Pr. A. N. S. Phila., 55, p. 758, 

 1903. 



Distribution. — New York to Martinique. Gulf coast: Cal- 

 houn Co., Fla.; Chandeleurs, Da. ; Galveston, Mustang Isl. 

 and Pass Cabello, Tex. Pleistocene, New Orleans pumping 

 station No. 7, cited by Harris from Upper Miocene, Galves- 

 ton well at 2252-2600 feet. 



maculatum Say, Amer. Conch., p. 176, pi. 25, (as S/garehis); 

 Tryon, Man., 8, p. 56, pi. 24, f. 57, 58, '86; Dall, Bull. 37, 

 U. S. N. M., p. 156, '89. 



Distribution. — Hatteras to Guadeloupe and West Florida, 

 shallow water. Closely related to martinianum Phillipi, 

 (Abb. u Beschr. i, p. 144, pi. r, f. 5, 1844). 



minor Dall, Bull. M. C. Z., 18, p. 297, '89, (as Sigaretus); Bull. 

 37, U. S. N. M., p. 156, '89. 



Distribution. — West Florida, Florida Keys and Sombrero 

 Isl., W. I. 54-84 fms. 



