95 Bulletin 38 I25 



algicoSa C. B. Adams, Pr. Bost. Soc. N. H., 2, p. 5, '48; Tryon, 

 Mau., 9, p. 129, pi. 22, f. 81, 82, '87; Dall, Tr. W. I. S., 3, 

 p. 282, '92. 



Distribution. — Tampa and Charlotte Harbor, West Florida 

 to Jamaica. Between tides. Pliocene, Caloosahatchie 

 beds. 



litteratum Born, Mus. Caes. Vind., p. 323, pi. 11, f. 14, 15, 1780; 

 Dall and Simpson, Bull. U. S. Fish Com., i, p. 425, 1901. 



Distribution. — East and West Florida, Antilles and 

 Europe. 



muscarum Saj^ Amer. Conch., 5, pi. 49, f. i, 1832; Tryon, Man., 

 9, p, 132, pi. 23, f. 12, 13, '87; Dall, Tr. W. I. S., 3, p. 282, 

 Vaughan, 2d Ann. Rept. Fla. G. S., p. 148, 1909. 



Distribution. — Florida to Jamaica. Gulf coast: Cedar Keys 

 and St. Mark's, Fla.; Chandeleurs, La. Pleistocene, Mana- 

 tee, 'Eabelle and North Creek, Fla. Pliocene, Caloosahat- 

 chie beds. 



variable C. B. Adams, Pr. Bost. Soc. N. H.. 2, p. 5, 1848; Sow- 

 erby. Conch. Icon., 15, pi. 13, f. 91, 1865; Dall, Bull. 37, 

 U. S. N. M., p. 140. 1889; Mitchell, Ust Texas Shells. 



Distribution. — Tampa, Fla.; Galveston, Corpus Christi, 

 Carancahua and Espiritu Santo Bays, Tex. South to the 

 Antilles and Curacoa. 



minimum Gmelin, Syst. Nat., p. 3564, 1792, {q.s Miirex); Tryon, 

 Man., 9, p. 167, pi. 34, f. 9-11, 1887; Dall and Simpson, 

 Bull. U. S. Fish Com., i, p. 426, 1901. 



Distribution. — Tampa, Fla., to Guadeloupe Isl. 



minimum var. nigrescens Menke, Synopsis, p. 85, 1828; Dall, 

 Bull. 37, U. S. N. M., p. 140, '89. 



Distribution. — Tampa to Venezuela. 



eburneum Bruguiere, Ency. Me'th., pi. 442, f. la, b; Tryon, 



