133 



Tryon's Manuel, 8, p. 187, 1886). Shells from the Gulf, 

 Blake station 36, at 24 fms., have been referred by Dall to 

 V. himbricalis \,\rm. (See Bull. M. C. Z., 18, p. 261, '89) 

 but the true l^mn^^axi lumbricalis is Oriental. 



nigricans Dall, Pr. U. S. N. M., 6, p. 334, 1883, {2J$, Imnbricalis 

 var.); Bull. 37, U, S. N. M., p. 144, '89. 



Distribution. — West Florida and Texas. 2-14 fms. 

 Genus PETALOCONCHUS Lea 



irregularis d'Orbigny, Moll, Cuba, i, p. 235, pi. 17, f. 16, 18/42, 

 (as Vermetus); Dall, Bull. 37, U. S. N. M., p. 144, 1889; 

 Tr. W. I. S.,3. p. 304, '92. 



Distribution. — Gulf of Mexico between Mississippi delta and 

 Cedar Keys, Fla., at 27 fms. Also Antilles to Guadeloupe. 

 Pleistocene of Fla. Pliocene, Caloosahatchie beds. 



varians d'Orbigny, Voy. Ame'r Me'rid., p. 456, pi. 54, f. 7-10, 

 1843; Tryon, Man., 8, p. 170, pi. 49, f. 22, 23, '86; Dall, 

 Tr. W. I. S., 3, p. 305, '92. 



Distribution. — Southwest Florida to Rio de Janeiro. Plio- 

 cene, Caloosahatchie beds. Oligocene, Tampa silex beds. 



erectus Dall, in Agassiz, Three Cruises of the Blake, 2, p. 71, f. 

 297, '88; Bull, M. C. Z., 18, p. 262, pi. 38, f. 4, '89; Bull. 

 37, U. S. N. M., p. 144, pi. 38, f. 4, '89. 



Distribution. — Antilles and West Florida. 37-805 fms. 

 Pliocene, Caloosahatchie River, Fla. 



Genus SIPHON lUIVl 



nebulosum Dillwyn, 2, p. 1076, No. 19; Tryon, Man., 8. p. 184, 

 pi. 54, f. 87, 1886; Dall, Bull. 37, U. S. N. M., p. 144, '89. 



Distribution. — East and West Florida to Tortola. 



Genus SILIQUARIA Bruguiere 



squamata Blainville, Diet, des Sci. Nat., 49, f. 213; Tryon, Man., 



