76 MOLLUSCA OF THE GULF OF MEXICO 46 



Genus OLSVELLA Swainson 



mutJca Sa}-, Jour. A. N. S. Pliila., 2, p. 228, 1822; Hilgard, Rept. 

 Chief Engineers to Sec. War, p. 358, '70, House of Rep., 

 Ex. Doc. I, pt 2, p. 886, '78; Ball, Pr. U. S. N. M., 6, p. 

 324, '83; Bull, 37, U. S. N. M., p. 106, pi. 34, f. I, 2, '89; 

 Tr. W. I. S., p. 45, '90; Vanatta, Pr. A. N. S. Phila., 55, 

 P- 757. 1903; Deussen, U. S. G. S. Water-Supply Paper, 

 No. 335, p. 77, 1914. 



Distribution. — North Carolina to Trinidad Isl. Gulf coast: 

 Recent, Cedar Keys, St. Mark's and St. Joseph's Bay, Fla. ; 

 Galveston and Corpus Christi, Tex. Pleistocene, New Or- 

 leans artesian well of 1856, Lake Borgne borings; Knapp's 

 wells, Terrebonne Parish, No. i at 1 600-1700, No. 2 at 1050- 

 1842, No. 3 at 1 150-1839 feet; North Creek, Manatee and 

 Eabelle, Fla. Pliocene, Caloosahatchie beds, Fla., and New 

 Orleans Gymnasium well at 1200 feet. Miocene, Gilbert 

 well No. lO, Bateson, Tex. at 323 feet. 

 pusiHa Marrat, Thes. Conch., t. 21, f. 356-358, '71; Tr3-on, Man. 

 Conch., 5, p. 64, pi. 14, f. 45, 46, '83; Vanatta, Pr. A. N. 

 S. Phila., 55, p. 757, '03. 



Distribution. — Cited by Vanatta from St. Joseph's Ba}^ and 

 Crooked Isl., West Fla. 



nivea Gmelin,Linn. Syst. Nat., ed. XIII, p. 3442, 1792; Reeve, 

 Conch. Icon., f. 64 a, '50; Tr)^on, Man., 5, p. 67, pi. 15, f. 

 74, '83; Ball, Bull. 37, U. S. N. M., p. 106, '89; Dall & 

 Simpson, Bull. U. S. Fish Com., i, p. 393, '01. 



Distribution, — Sarasota, Vv^est Fla. to Haiti, 27-805 fms. 



jaspidea Gmelin, Syst. Nat.,ed. 13, p. 3442, 1792; Reeve, Conch. 

 Icon., 6, p. 22, f. 58,1850; Dall & Simpson, Bull, U, S. Fish 

 Com., I, p. 392, 1 901. 



Distribution. — Hatteras to Brazil and West Florida, 27-805 

 fms. 



floralia Duclos, in Chenu, 111. Conch., p. 6; Tryon, Man., 5, p. 



