1^53 MOLLUSCA OF THE GULP OF MEXICO I02 



undulosum de Folin, Ann. Soc. Linn. Maine et Loire, ii, 1869; 

 Ball, Bull. 37, U. S. N. M., p. 142, '89. 



Distribution. — Charlotte Harbor, West Fla. to Jamaica. 

 Pliocene to Recent. 



nitidum Stimpson, Pr. Bost. vSoc. N. H., 4. p. 112, 1S51, (as 



Caecuvi); Tr3^on, Man.. 8, p. 222, pi. 67, f. 73, '86; Dall, 



Tr. W. I. S., 3, p. 302, (892; Vanatta, Pr. A. N. S. Phila., 

 55, P- 758, 190.3. 



Distribution. — West Florida, at Tampa and Crooked Isl. 

 (Calhoun Co. ), to Jamaica. 



Genus BiVOf'ilA Gray 



exerta Dall, Bull. M. C. Z., Harvard Coll., 9, p. 39. 1881; j8, 

 p. 264, pi. 26, f. 6, '89; Bull. 37, U. S. N. M., p. 144, pi. 26, 

 f. 6, '89. 



Distribution. — Cape Lookout, N. C, to Barbados. Gulf of 

 Mexico, West Florida and Texas regions, deep water. 31- 

 1002 fms. 



Genus VER!Vi JCULARIA Lamarck 



spirata Philippi,Arch. fur Naturg. 2, pt. i, 224, pi. 7, f. i, 1836, 

 (as Vermiculit.s)\ Tryon, Man., 8, p. 187, pi. 55, f. 99, 100, 

 '86; Dall, Bull. 37, U. vS. N. M., p. 144, pi. 51, f. 4> '89; 

 Tr. W. I. S., 3. p. 304, '92; Singley, 4th Ann. Rept. G. S. 

 Tex., p. 340, '92. Johnson, Occ. Pa. Bost. Soc. N. H., 7, p. 

 123, 1915- 



Distribution. — Massachussetts to the West Indies. Gulf 

 coast: West Florida; Matagorda and Corpus Cliristi Bays, 

 and Quintana, Tex. Pliocene of Shell Creek, &c, Fla. 



Note. — Moerch described as V. melanosclera (Pr. Zool. Soc, 

 p. 174, 186 1 ) a form from Vera Cruz which Tryon regarded 

 as a variet)' of spirata, and on the same page of the Proceed- 

 ings Moerch described V. qicadrangularis from Yucatan. This 

 was also regarded b}' Tryon as a variety of spirata (See 



