103 MoivLUSCA OF THE GULF OF MEXICO 7 1 



Dall, Bull. 37, U. S. N. M., p. 56, '89 ; Dall and Simpson, 

 Bull. U. S. Fish Comm., 1, p. 485, pi. 56, f. 3, 10, '01 ; 

 Dall, Proc. U. S. N. M., 26, p. 371, 1903. 

 Dione veneris Deshayes, Cat. Conchifera Brit. Mus., pt. 1, 

 1853 ; Reeve, Conch. Icon., 12, Dione, pi. 6, f. 23, 1863. 

 Distribution. — Gulf of Mexico, Texas coast, to Colon and 

 Trinidad. Type of subgenus Hysteroconcha Fischer. 



Genus CYTHEREA Bolten 

 lister! Gray, Analyst, 8, No. 24, 1838, (as Dosinia)-, Reeve, 

 Conch. Icon. 12, Venus, pi. 5, f. 14, '63 ; Dall, Proc. U. 

 S. N. M., 26, p. 372, 1903. 

 Venus crispata Dall, Bull. 37, U. S. N. M., p. 54, 1889. Not 

 of Desha}^es, 1853. 

 Distribution. — Gulf of Mexico to Santo Domingo, Tortola and 

 the Virgin Isls. Gulf coast. — West Florida. 



Genus ANTfGQNA Schumacher 

 (Ventricola) rugatina Heilprin, Tr. Wagner Inst. Sci., 1, p, 92, 

 pi. 11, f. 24, 1887, ( as Venus); Dall and Simpson, Bull. 

 U. S. Fish Com., 1, p. 483, 1901 ; Dall, Proc. U. S. N. 

 M., 26, p. 37 2 > '03 5 Tr. W. I. S., 3, p. 1277, '03. 

 rugosa var. rugati?ia Dall, Bull. 37, p. 54, '89. 

 Distribution. — Hatteras to Porto Rico, 26-84 f ms - Pliocene 

 to Recent. Gulf coast. — Tampa, Fla. Pliocene : Ca- 

 loosahatchie. 



(Ventricola) caliimorpha Dall, Proc. U. S. N. M., 26, pp. 372, 

 382, pi. 13, f. 6, 1903. 

 pilula Dall, B. M. C. Z., 9, p. 136, '81, (as Diplodonta)-, 

 Idem, 12, p. 274, pi. 8, f. 13, '86, (as Callocardia); Bull. 

 37, U. S. N. M., p. 54, '89, (as Venus). Not pilula of 

 Reeve, 1863. 



Distribution. — Gulf of Mexico (Dall, '89) to Barbados, 76- 

 300 fms. 



Genus CYCL1NEILA Dall 



tenuis Recluz 



Dosinia {Artemis) tenuis Recluz, Jour, de Conchy., 3, p. 



