146 MOLLUSCA OF THE Gui.F OF MEXICO II6 



3, '15; Maur}^, Bull. Arner. Pal., No. 29, p. 133, pi. 23, f. 



7. 1917- 



agglutinans Lamarck. 



Distribution. — Hatteras to the Antilles. Gulf of Mexico, 

 West Florida and dredged at various stations, 14-229 fms. 

 Usually not so deep as X. caribaea and more heavily loaded. 

 Pliocene, Caloosahatchie beds. West Fla. Lower Miocene, 

 Chipola marl. West Fla. Oligocene, Tampa silex beds, Fla. 

 Upper Eocene, Jackson, Miss. Eocene, Wood's Bluff, Ala. 

 Upper Cretaceous, (Ripley) of Prairie Bluff, Ala. The 

 most ancient species of the Gulf Mollusca. 



caribaea Petit, Jour, de Conch., 5, p. 248, pi. 10, f. i, 2, 1856; 

 Tryon, Man., 8, p. 162, pi. 47, f- 96, '86; Ball, Bull. M. C. 

 Z., 18, p. 291, '89; Ball and Simpson, Bull. U. S. Fish 

 Com., I, p. 438, 1901. 



Bistribution. — Hatteras to Barbados and Gulf of Mexico, 

 various stations, 14-274 fms. 



Genus ^JAT5CA Scopoli 



livida Pfeilfer, Wiegm. Arch., 6, p. 254, 1840: Moerch, Malak. 

 Blatt., 24, p. 64, '77; Ball, Bull. M. C. Z., 18, p. 292, '89; 

 Bull. 37, U. S. N. M., p. 154, '89. 



jamaicensis C. B. Adams, Contr. Conch., p, in, 1850. 



/>r<?.r2m<2 Sowerby, Thesaurus, Natica, pi. 8, f. in. Not of 

 C. B. Adams. 



Bistribution. — Hatteras to Barbados. Gulf of Mexico, be- 

 tween the Mississippi delta and Cedar Keys, 26 fms. 



maroccana Chemnitz, Conch. Cab., 5, p. 270, pi. 188, f. 1905-10; 

 Billwyn, Cat. Rec. Sh., 2, p. 983, No. 13, 1817; Ball, Bull. 

 M. C. Z., 18, p. 292, 1889; Bull. 37, U. S. N. M., p. 154, 

 1889. 



Bistribution. — Hatteras to Barbados and Gulf of Mexico, 

 west of Florida. Also European and West African. 



