117 Btjllktin 38 147 



canrena Linnseus (in part) Syst. Nat., ed. X, p. 776, 1758, (a^'' 

 Nerita) \ Reeve, Conch. Icon., 9, pi. 4, f. 14, 1855; Tuomey 

 and Holmes, PI. Foss. S. Car., p. 115, pi. 25, f. 17, 1S57; 

 Ball, Bull. 37. U. S. N. M., p. 154, '89; Tr. W. I. S., 3, 

 p. 364, '92; Maur}^, Bull. Amer. Pal., No. 29, p. 134, pi. 

 23, f, 10, 1917. 



plicateUa Conrad, Pr. A. N. S. Phila., p. 564, 1863. 



Distribution. — Hatteras to the Antilles, Pernambuco and 

 Cartagena. Gulf coast, West Florida and Galveston. Plio- 

 cene, Caloosahatchie beds, Upper Miocene, Galveston well 

 at 2158-2920 feet. Lower Miocene, Bascom No. 2 w^ell, Mo- 

 bile, Ala., at 1241 feet, Chipola horizon. 



alticallosa Dall, Trans. Wagner Inst. Sci., 3, p. 365, pi. 22, f. 

 28, 1892. 



Distribution. — Lower Miocene, Chipola marl. Northwest 

 Florida, and of the Bascom No. 2 well, Mobile, Ala. at 1241 

 feet, Chipola horizon. 



Subgenus Cryptooatica Dall 



pusilla Say, Jour. A. N. S. Phila., 2, p. 257, 1822; Hilgard 

 House of Rep. Ex. Doc.,i, pt. 2, p. 886, 1878; Dall, Bull. 

 37, U, S. N. M., p. 154, pi. 50, f. 21, '89; Singley, 4th 

 Ann. Rept. Tex., p. 341, '92; Vanatta, Pr. A. N. S. Phila., 

 55' P- 75^) 1903; Johnson, Occ. Pa. Bost. Soc. N. H., 7, p. 

 105, 1915. 



Distribution. — Maine to Florida Keys. Gulf coast: St. 

 Joseph's Ba}^ and Crooked Island, West Fla., Galveston, 

 Tex. Pleistocene, New Orleans artesian well of 1866, Lake 

 Borgne borings, Knapp's wells, Terrebonne Parish, La., No. 

 3, at 1 150-1200, 1330-1470, 1500- 1525 feet. Pliocene 

 Caloosahatchie beds, and of the New Orleans Gymnasium 

 Club well at 1200 feet. 



Genus POLfNSCES Montfort 



Subgenus Euspira Agassiz 

 tenuis Recluz, Jour, de Conch., i, p. 388, pi. 12, f. 7, 1850; 



