121 Bulletin 38 . 151 



Genus EUNATsC^^A Fischer 



semisylcata Gray, Zool. Beechey's Voyage, p. 137, {slS Natica); 

 Tr3^on, Man., 8, p. 32, pi. 9, f. 74, '86;Dall, Bull. M. C. Z., 

 18, p. 296, '89; Tr. W. I. S., 3, p. 380, '92, 



fordiana and fordii Simpson. 



Distribution. — East Florida to Porto Rico. Gulf coast, 

 Sarasota Bay, West Fla., between tides. 



Genus LAIVlELLARiA Montagu 



rangi Bergh, Mgr., p. 94, No. 8, '53; Dall, Bull. 37, U. S. N. M., 

 p. 156, '89. 



Distribution. — Texas region of the Gulf of Mexico. Ap- 

 parentl}^ never figured. 



Genus MARSEMINA Gray 



ampla Verrill, Pr. U. S. N. M., 3, p. 374, '80; Tr. Conn. 

 Acad. Arts and Sci., 5, p. 518, pi. 42, f. 3, 3a, '82; Dall, 

 Bull. 37, U. S. N. M.. p. 156, '89; Johnson, Occ. Pa. Bost. 

 Soc. N. H., 7, p. 109, 1915. 



Distribution. — Maine to Sarasota Bay, West Fla. 



Genus ACf^AEA Eschscholtz 



Gandeana d'Orbigny, In de la Sagra's, Hist. Pol. y Nat. Isla de 

 Cuba, 2, p. 199, pi. 25, f. 1-3, 1845, {^s Patella); Dall, Bull. 

 37, U. S. N. M., p. 156, '89; Tryon, Man., 13, p. 38, 

 '91; Dall and Simpson, Bull. U. S. Fish Com., i, p. 440, 

 1901. 



Distribution. —Florida Strait to Tobago, W. I. Also West 

 Florida and Texas. 



punctulata Gmelin, Syst. Nat., 13, pp. 3705, 3717, 1792, (as 

 Patella); Pilsbry, Tryon, Man., 13, p. 37, pi. 5, f. 11- 13, 

 1891; Dall and Simpson, Bull. U. S. Fish Com., i, p. 440, 

 1 901. 



