63 BULLBTIN 38 ' 93 



Distribution. — Yucatan Strait 43 — 640 fms. 



hotessieriana d'Orbign}^ 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 closelj^ 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, 

 {d.s Pleurotoma) ; Dall Bull. U. S. N. M., p. 118, 1889] an 

 unfigured species, isfide Dall and Simpson (1901) merely a 

 mutation of p7'etri, as shown by cotypes from Adams. 



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

 Florida and Jamaica. 



Genus COLUWi BELLA Lamarck 



mercatoria Linnaeus, Syst. Nat. ed. X, p. 730, 1758, (as Valuta); 

 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 ASTYR8S H. and A. Adams 



lunata 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, 



