124 MOLLUSCA OF THE GULF OF MEXICO 94 



(Eumeta) subulata Montagu, Test. Brit. Siippl., p. 115, pi. 30, 

 f. 6, 1808, (as Mtirex); Ball, Bull. M. C. Z., 18, p. 252, pi. 

 20, f. 4, '89; Bull. 37, U. S. N. M., p. 140, pi. 20, f. 4, 

 pi. 52, f. I, '89; Johnson, Occ. Pa. Bost. vSoc. N. H., 7, p. 

 126, 1915. 



emersoni C. B. Adams, Jour. Bost. Soc. N. H., 2, p. 284, pi. 4, 

 f. 10, 1838, (as Cerithhtm) Verrill, Inv. Vineyard Sound, p. 

 648, pi. 24, f, 151, 1873. 

 pimdatum Philippi, 1848. Not of Bruguiere, 1789. ^ 



Distribution. — Massachussetts to Grenada, W. I. Gulf of 

 Mexico, Cedar Keys, Texas and Yucatan. 2-15 fms. Plio- 

 cene of the Caloosahatchie. 



Genus SEiLA A. Adams 

 adamsi H. C. Lea, Tr. Amer. Phil. Soc. 2d ser. 9, p. 42, 1845, 

 (as Cerithiiivi)\ Ball, Tr. W. I. S.,3, p. 267, 1S92; Vanatta 

 Pr. A. N. S. Phila., 55, p. 758, 1903; Johnson, Occ. Pa. 

 Bost. Soc. N. H., 7, p. 127, 1915. 

 tei^ebralis C. B. Adams, Jour. Bost. Soc. N. PI., 3, p. 320, pi. 

 3, f. 7, 1840 (as Cerithi2i7n) ] Be Kay, N. Y. Moll, p. 130, 

 pi. 8, f. 172, '43; Ball, Bull. M.C. Z., 18, p. 250, '89; Bull.U. 

 S. N. M., p. 138, pi. 52, f. 5, '89. Not Ce lit Ilium, t ere bra I e 

 Lamarck. 



Distribution — Massachussetts to Samana Bay, Bominican Re- 

 public. 0-20 fms. Gulf coast: Cedar Ke3^s, Fla. ; Chande- 

 leurs, La.; Galveston and Corpus Christi, Texas, 0-20 fms. 

 Pleistocene, Gulf coast. Pliocene, Caloosahatchie River, 

 Fla. Lower Miocene, Chipola marl, West Fla. 



Genus CERSTHIUi^l Bruguiere 

 floridanum Moerch, Mai. Blatt., 23, p. 114, 1876; Ball, Bull. 37, 

 U. S. N. M., p. 140, '89; Tr. W. I. S., 3, p. 282, pi. 14, f. 

 10, 1892; Vaughan, Publ. No. 133, Carn. Inst., p. 171, 

 1910. 



Bistribution — Hatteras to Cuba and West Fla. Pleistocene, 

 Labella, West Fla. Pliocene, Calaosahatchie beds. 



