MOIXUSCA OF THE GULP OF MEXICO 1 34 



pupa Ivinnseus, Syst. Nat., ed. X, p. 378, 175S; Tryon, Man., 10, 

 p. 42, pi. 14, f. 72, 73, '88; Ball, Bull. 37, U. S. N. M., p. 

 16S, '89. 



Distribution. — Charlotte Harbor, West Florida to Jamaica. 

 Shallow water. 



viridis Linnseus, Syst. Nat., ed. X, p. 778, 1758; Tryon, Man., 

 10, p. 54, pi. 18, f. 88, 1888; Ball, Bull. 37. U. S. N. M., 

 p. 168. '89. 



Distribution. — Florida Keys to Barbados, W. I. Also Texas 

 region of the Gulf of Mexico. 



showaSteri Dea, Pr. Acad. Nat. Sci. Phila., p. 55, 1861; Tryon, 

 Man., 10, p. 53, pi. 17, f. Si, 82, '88; Ball, Bull. 37, U. S. 

 N. M., p. 168, '89. 



Distribution. — Alabama and West Florida, Fluviatile. 



sparsilineata Ball. Proc, U. S. N. M., 46, p. 236, 1914. 



Neritina, sp. indet., Aldrich, Nautilus, 24, pt. 11, p. 131, 

 No. 7, 1911: 26, pi. I, f. 3, 4, 1912. 



Bistribution. — Upper Miocene or Pliocene. Well near Al- 

 exandria, La., at 49 feet; Pine Prairie La. , well at 1540 ft. 

 and well ^ mile S. E. of Pine Praire depot, in dump. Also 

 Satilla River, Ga., and Burkeville, Texas. One of the most 

 widespread and characteristic species of the brackish water 

 formation, extending from Georgia through Louisiana to 

 Texas. 



Genus PLEUROTOIVIARSA Sowerby 



(Petrotrochus) quoyana Fischer and Bernardi, Journ. de Conch., 

 5, p. 165, pi. 5, f. 1-3, 1856; Ball, Bull. M. C. Z., 9, p. 78, 

 '81; Crosse, Journ, de Conch., 22, p. 14, '82; Ball, Bull. 

 M. C.Z., 18, p. 397, pi. 29, f. I, pi. 31, f. I, lb, ic, pi. 37, f. 

 5, '89; Bull. 37, U. S.N. M., p. 168 same pis. and figs., 

 1889. 



Bistribution.— Yucatan, near Arrowsmith Bank, at 130 fms. 



