55 BUI.I.STIN 38 ' 85 



aepynotus Dall, Bull. M. C. Z., i8, p. 169, 1889. 



Distribution. — Gulf of Mexico, 84 fms. Also Antillean. 

 amphiurgus Dall, Bull. M. C. Z., 18, p. 171, 1889. 



Distribution. — Gulf of Mexico, Blake station 45, at lox fms. 

 Genus LEUCOZONIA Gray 



ciogulifera Lamarck, 7, p. 107, 1822, (as Turbiyiella) ; Reeve, 

 Conch. Icon., 4, pi. 3, f. 17, 1847; Dall and Simpson, Bull. 

 U. S. Fish Com., i, p. 398, 1901. 



Distribution. — Sarasota, Fla. , to Texas and Brazil. Also 

 Antillean. 



OSeSlata Gmelin, Syst. Nat., p. 348S, 1792, (as Buccmu7n)\'R.e&ve, 

 Conch. Icon., 4, pi. 8, f. 38, 1847; ^^^^ and Simpson, Bull. 

 U. S. Fish Com., i, p. 398, 1901. 



Distribution. — Cedar Keys, Fla., to Guadeloupe, W. I. 

 Genus BUSYCON Bohen 



pyrum Dillwyn, Desc. Cat. Rec. Sh., i, p. 485, 18 17; Dall, Bull. 

 37, U. S. N. M., p. 112, '89; Tr. W. I. S., 3, p. 112, '90; 

 Singley, 4th Ann. Rept. G. S. Tex., p. 334, '92; Vanatta, 

 Pr. A. N. 8. Phila. p. 757, 1903; Vaughan, Publ. 133, 

 Carn, Inst., p. 171, 1910. 



Distribution. — Hatteras to Gulf of Mexico. Upper Miocene 

 to Recent. Gulf coast: Cedar Keys, Fort Barranca, St. 

 Mark's, Fla.; Cameron, &c. La.; Galveston, Matagorda, 

 Corpus Christi, &c., Texas. Pleistocene of Louisiana at 

 Grand Chenier and New Orleans pumping station No. 7. 

 A high spired variety is found in abundance at Cedar Keys, 

 Point au Fer, Cameron and Galveston, and in the Pleistocene 

 of Grand Chenier, La., North Creek, Labelle, Manatee and 

 Orient, West Fla. 



can alicu Saturn Linnaeus, Syst. Nat., p. 753, 1758, {a.s Murex); 

 Holmes, Post-Pl. Fos. S. C. p. 66, pi. 11, f. 3, 1859; Hil- 



