121 MOI.I.USCA OF THE GULF OF MEXICO 89 



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



I055) 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, 1834, (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, \A. 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) lirnula Dall, Bull. 37, U. S. N. M., p. 60, 1889 {no- 



7nen nudum); 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 Amphidestna); Holmes, Post-Pl. Fos. S. C p. 



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



