59 Bulletin 38 89 



Distribution. — Arrowsmith Bank, Yucatan, 130 fms. Also 

 Antillean. 



bushi Dall, Bull. M. C. Z., 18, p. 182, pi. 15, f. 12, 1889. 



Distribution. — Gulf of Mexico, Blake station 5, 152-229 fms. 

 Also off Sand Key, Fla. and Barbados. 



Genus ALECTRION Montfort 



vibex Saj^, Jour. A. N. S. Phila., (i), 2, p. 231, 1822, {as JVassa); 



Am. Conch., pi. 57, f. 2; Dall, Bull. 37, U. S. N. M., p. 



116, pi. 50, f, 8, 1889; Singley, 4th Ann. Rept. Tex. G. S., 



p. 335, 1892; Johnson, Occ. Pa. Bost. Soc. N. H.,7, p. 134, 



19^5- 

 /refe?isis Ferkins, Pr. Bost. Soc, 13, p. 117, 1869. 



Distribution. — Cape Cod to Colon. Gulf coast: Cedar 

 Keys and St. Mark's, Fla., Point au Fer, La., Galveston, 

 Corpus Christi, Tex. Pleistocene, New Orleans pumping 

 station No. 7; Manatee, Orient and lyabelle. West Fla. 

 Pliocene, Caloosahatchie. 

 ambiguus Montagu, Test. Brit., pi. 9, f. 7, 1803, (as Bacdm/m); 

 Dall, Bull. M. C. Z., 18, p. 184, '89; Not aynbigua Dunker 

 (West African), which is mcrassata Strom. 

 alba Say, i'&26; cavdidissima C.B.Adams, Krebs Cat., p. 32. 



Distribution. — North Carolina to West Florida and Barbados. 

 Yucatan Strait, 640 fms. Variety antillanim d'Orb., Ca- 

 loosahatchie Pliocene. 



acutus Say, Jour. A. N. S. Phila., 2. p. 234, 1822, {as Nassa); 

 Holmes, Post-Pl. Fos. S. C, p. 72, pi. 12, f. 3, i860, (as 

 Buccinum'); Hilgard, House of Rep. Ex. Doc. i, pt. 2, p. 

 886, '78; Dall, Bull. 37, U. S. N. M., p. 116, '89; Harris, 

 Bull. Am. Pal., vol. i, p. 102, '95; Vanatta, Pr. A. N. S. 

 Phila., 55, p. 757, 1903; Deussen, Water Suppl}" Pa. 335, p. 

 77, 1914- 



Distribution. — Carolinas to Barbados. Gulf coast: Recent, 

 St. Joseph's Bay and Crooked Isl., West Fla.;Point au Fer, 



