lai M0L1.USCA OF THE Gulf of Mexico 89 



(Psammacoma) tageliformis Dall, Tr. Wagner Inst. Sci., 3, p. 

 1055, 1900 ; Proc. U. S. N. M. 23, pp. 300, 315, '01 ; Dall 

 and Simpson, Bull. U. S. Fish Com., i, p. 482, pi. 55, f. 

 10, II, 15, 1901. 

 Distribution. — Texas and Porto Rico, W. I. Recent : Gal- 

 veston and Corpus Christi. Pleistocene : Corpus Christi. 



(CydippinaJ brevifrons Say, Am. Conch., pi. 64, f. i, 1S34, (as 

 Tellina); Binney's Say, p. 227, 1858; Dall, Bull. 37, U. 

 S. N. M., p. 60, '89; Singley, 4th Ann. Rept. Texas, p. 

 329, '92 ; Dall, Tr. W. I. S., 3, p. 1055, 1900; Proc. U. 

 S. N. M., 23, p. 300, '01; Dall and Simpson, Bull. U. S. 

 Fish Com., i, p. 481, pi. 55, f. 3, 12, 13, '01 ; Vanatta, 

 Proc. Acad. Nat. Sci. Phila. , 55, p. 757, 1903. 

 Distribution. — New Jersey to Rio de Janeiro. Pliocene to 

 Recent. Gulf coast. — Horn Island, Miss. ; Galveston, 

 Tex. Pliocene Caloosahatchie marl, Monroe Co,, Fla. 



(Cydippina) limula Dall, Bull. 37, U. S. N. M., p. 60, 1889 {no- 

 vie7i 7iudu7ii); Nautilus 9, p. 32, 1895; Proc. U. S. N. 

 M., 23, pp. 300, 315, pi. 2, f. I, 1901. 

 Distribution. — North Carolina to Barbados, 22-100 fms. West 

 Florida (Dall). 

 (Cydippina) extenuata Dall, Proc. U. S. N. M., pp. 300, 314, pi. 

 2. f. 7, 1901. 

 Distribution. — Dredged at 32 fms., U. S. Fish Com., between 

 the Missitsippi delta and Cedar Keys, Fla. 



Genus SEMELE Schumacher 

 proficua Pulteney, In Hutchin's Dorset., p. 29, pi. 5, f. 4, 1799, 



(as Tellina); Dall, Tr. W. I. S., 3, p. 991, 1900 ; Dall and 



Simpson, Bull. U. S. Fish Com., i, p. 477, 1901. 

 decussata Wood, Gen. Conch., p. 190, pi. 43, f. 2, 3, 181 5. 



Reeve, Conch. Icon., Aniphidesma, pi. 4, f. 23, 1853. 

 orbiculata Say, Jour. A. N. S. Phila, 2, p. 307, 1822 ; 



Tuomey and Holmes, Pleio. Fos. S. C, p. 94, pi. 23, f. 



4, 1856, (as Aniphidesma); Holmes, Post-Pl. Fos. S. C. p. 



51, pi. 9, f. 8, 1858. 



