I04 MOI^LUSCA OF THE GULF OF MEXICO 74 



(Bull. M. C. Z., i8, p. 313, 1889); 7nuUistriatum Say (Jour. 

 A. N. S. Phila., 5, p. 208, 1826; Dall, Bull. 37, U. S. N. M., 

 pi. 50, f. 5, \Z^<^)\coniorquatuvi Dall, (Bull. M. C. Z., 18, p. 

 318, pi. 18, f. 9, 1889); ^^^ fnodeshcni 0. B. Adams (Jamaica 

 Shells). These species are not cited, as far as I am aware, 

 by other authors from Gulf coast. They are not in our col- 

 lections from the Gulf and are noted here solely Jide Singley, 

 (Fourth Ann. Rept. Tex. Geol. Surv., p. 336, 1892). 



Genus JANTH I NA Bolten 



janthina Linnaeus, Sj-st. Nat., ed. X., p. 772, 1758, {Helix); 

 d'Orbigny, Voy. Am. Me'r., p. 413, pi. 61, f. 8-10, 1841; 

 Dall, Pr. U. S. N. M., 37, p. 223, 1910; Johnson, Occ. Pa. 

 Bost. Soc. N, H., 7, p. loi, 1915. 



fragilis Lamarck, An. s. Vert., p. 89, 1801; Tryon, Man., 9, 

 p. 36, pi. 9, f. 4, 1887; Singley, 4th Ann. Rept. G. S. Tex- 

 as, p. 336, 1892; Bartsch, Bull. 91, U. S. N. M., p. 65, 

 1915- 



Distribution. — Nantucket, Mass., to Colon; and West Fla. 

 to Quintana and Galveston, Texas. Pelagic. Also Pacific 

 Ocean, Lat.42°N. to 36° S.,and Indian Ocean, Port Alfred, S. 

 E. Africa. 

 pallida Harvey, Thompson's Ann. Phil, and Nat. Hist., 5, p. 96, 

 pi. 2, f. 2, 1841; Tryon, Man., 9, p. 37. pi. 10, f. 15, 1887. 



Distribution. — Europe, the West Indies and Gulf of Mexico, 

 Cameron, La. (washed ashore). Also tropical waters of the 

 Pacific Ocean. Pelagic, 



globosa Swainson, Zool. Illust. (i), 11, pi. 85, 1822; Tryon, 

 Man., 9, pi. 10, f. 12, '87; Singley, 4th Ann. Rept. Tex., p. 

 336, '92; Mitchell, List Texas Shells; Bartsch, Bull. 91, 

 U. S. N. M., p. 65, 1915. 



Distribution. — Gulf Stream, Pelagic. Washed ashore at 

 Quintana, Tex. and West Fla. Also Port Alfred, S.E.Africa. 



communis Lamarck, An. s. Vert., ed, Desh., IX, p. 4; Tryon, 



