I07 Bulletin 38 l37 



Fenus LITIOPA Rang 



bombix Kiener, Ann. des Sci. Nat., p. 203, 1829; Ann. desSci., 

 30, p. 222, pi. 17, B. f. 1-3, 1833; Tryon, Man., 

 9, p. 281, p. 53, f. 74, 1887; Dall, Bull. 37, U. S. N. M., p. 

 148, '89; Singley, 4th Ann. Rept. Tex., p. 340, '92; Dall, 

 Bull. 112, U. S. N. M., p. 155, 1921, Johnson, Occ. Pa. 

 Best. Soc. N. H., 7, p. 119, 1915. 



melanostoma (Rang) Sumner, Bull. U. S. Bur. Fish., 31, pt. 

 2, p.720, 1913. 



Distribution. — New England to Brazil. Gulf coast at Cam- 

 eron, I^a.; Corpus Christi and Galveston, Tex. Also Pacific, 

 California coast. Pelagic on floating Sai^gassurn. 



Genus TECTARIUS Valenciennes 



muricatus Linnaeus, Syst. Nat., ed X, p. 1758, (as Tiirbo); Reeve, 

 Conch. Icon., 10, pi. 2, f. 11, 1857, {^s, Littorina); Tryon, 

 Man., 9, p. 258, pi. 48, f. 68, 1887; Dall, Bull. 37, U. S. N. 

 M., p. 146, '89; Dall and Simpson, Bull. U. S. Fish Com., 

 I. P- 431. 1901. 



Distribution. — East Florida and West Florida and Antilles 

 to Colon. 



Genus ECH I NELLA Swainson '.', "^ 



nodulosa Pfeiffer, Tryon, Man., 9, p. 258, pi. 48, f. 75, 1887, 

 (Excl. syn.); Dall, Bull. U. S. N. M., p. 146, '89; Dall, 

 and Simpson, Bull, U. S. Fish Com., i, p. 431, 1901. 



Distribution. — North Carolina to Barbados and Texas. 



Genus ISAPIS H. & A. Adams 



ebsoleta Dall, Proc. U. S. N. M., 46, p. 233, pi. 22, f. 8, 

 1914. 



Distribution. — Upper Miocene or Pliocene. Well near Al- 

 exandria, Ea., at 49 feet. 



