63 



BuivI^l^TlN 38 



93 



Distribution. — Yucatan Strait 43 — 640 fms. 



hotessSeriana d'Orbigny, Moll. Cuba, 2, p. 138, pi. 21, f, 37-39; 

 Tryon, Man., 5, p. 144, pi. 52, f. 82, 1883; Dall, Bull. 37, 

 p. 118, '89. 



Distribution. — Tampa, West Fla., to Guadeloupe, W. I. 

 Very closely allied to the following species. 



pretri Duclos, Chenu, Conch. 111., pi, 16, f. 7, 8; Tryon, Man., 

 5, p. 144, pi. 52, f. 76, 1883. 



Note.— C. B. Adams' albella [Conch. Contr., p. 63, 1850, 

 Pleuroioma); Dall Bull. U. S. N. M., p. 118, 1889] an 

 unfigured species, is fide Dall and Simpson (1901) merely a 

 mutation of pretri, as shown by cotypes from Adams. 



Distribution. — Variety albella^ Cape Fear, N. C, to West 

 Florida and Jamaica. 



Genus COLUM BELLA Lamarck 



mercatorta Linnaeus, Syst. Nat. ed. X, p. 730, 1758, (as Voluta)\ 

 Kiener, Coq. Viv., Columbella, p. 23, pi. 5, f. i, 1841; Dall, 

 Bull. 37. p. 116, '89; Dall and Simpson, Bull. U. S. Fish 

 Com., I, p. 403, 1901. 



Distribution. — Cape Lookout, N. C, to Barbados and West 

 Florida. Pleistocene of Costa Rica. 



rusticoides Heilprin, Tr. Wagner Inst. Sci., i, p. 81, pi. 8, f. 9, 

 1887; Pr. A. N. S. Phila., p. 52, pi. 3, f. 2, '87; Dall, Tr. 

 W. I. S., 3, p. 135, '90; Vaughan, Publ. No. 133, Carn. 

 Inst., p. 171, 1910. 



Distribution. — Cedar Keys and St. Marks, West Florida to 

 Cuba. Pleistocene, Labelle, West Fla. Pliocene, Caloosa- 

 hatchie beds, West Fla. 



Genus ASTYRIS H. and A. Adams 



liinata Say, Jour. A. N. S. Phila., 5. p. 213, 1826, (as Nassa ) 

 Tuomey aud Holmes, PI. Fos. S. C. p. 136, pi. 28, f. 6, 



