^54 



MOI^LUSCA OF THE GULF OF MEXICO 



124 



(Callogaza) watsoni Dall, Bull. Mus. Comp, Zool., 9, p. 50, '81; 

 18, p. 356, pi. 22, f. 7, 7a, pi. 23, f. I, la, pi, 24, f. 2, 2a. 

 1889. 



Margarita Jilosa Dall, Bull, M. C. Z., 9, p. 42, '81. 



Distribution. — Yucatan Strait, 640 fms. Also off Cuba and 

 Barbados. 



Genus LIOTIA Gray 



gemmia Tuomey and Holmes, Pleioc. Fos. S. Carolina, p. 118, 

 pi. 26,, f. 4, '56, (as Trochus) \Y)2X\ and Simpson, Bull. U. S. 

 Fish Com., i, p. 445, 1901. 



tricarinata Stearns, Proc. Bost. Soc. Nat. Hist., p. 23, for '72; 

 {siS Archiiedonica)', Dall, Bull. M. C. Z., 18, p. 389, '89; 

 Bull. 37, U. S. N. M., p. 166, '89. 



Distribution. — Hatteras to Porto Rico. Also off Tampa. 

 West Fla., 15 fms. Pliocene, Caloosahatchie beds. 



bairdi Dall, Bull. M. C. Z., 18, p. 389, pi. 33, f. 8, '89. 



Distribution — Gulf of Mexico, Blake Station 2, at 805 fms. 

 Also off Carolina, Key West and Havana. 



Genus CALL50ST0IV1A Swainson 



euglyptiim A. Adams, Proc. Zool. Soc, p. 38, '54, {2iS Zizyphmus) \ 

 Reeve, Mon. Zizyp., pi. 3, f. 17, '63; Dall, Bull. M. C. Z., 

 18, p. 363, '89; Pilbry, Man., 11, p. 374, pi. 15, f. 37, pi. 

 57. f- 9, '89- 



Distribution. — North Carolina to Florida, Texas and Vera 

 Cruz, Mexico. Erroneously referred by Reeve to Tasmania. 

 3-32 fms. Pliocene ancestor is C. philantliropus Conrad. 



circumcmctum Dall, Bull. M. C. Z., 9, p. 44, '81; 18, p. 364, pi, 

 22, f. 3, 3a, '89; Bull. 37, U. S. N. M., p. 162, pi. 22, f. 3, 

 3a, '89. 



Distribution. — Florida Keys, Antilles and Yucatan Strait. 

 640-805 fms. 



