io8 



BuiyivKTiN 34 



140 



Distribution. — Hatteras to Jamaica, 2-287 ^ ms - Pliocene to 

 Recent. Gulf coast. — Recent : West Florida, 30 fms. 

 Pliocene : Caloosahatchie marl. 

 (Cuneocorbula) engonata variety burnsi Dall, Tr. W. I. S., 3, p. 



847, 1898. 



Distribution. — Upper Oligocene of Tampa, Fla, and Lower 

 Miocene of the Chipola marl, Fla., and of the Bascom well 

 No. 2, Mobile, Ala., at 1241 feet, Chipola horizon (Al- 

 drich ). 



(Cuneocorbula) swiftiana,, C. B. Adams, Contr. Conch., 12, p. 

 236, 1852 ; Dall, B. M. C. Z., 9, p. 114, '81 ; 12, p. 314, 

 pi. 2, f. sa-c, '86 ; Dall, Bull. 37, U. S. N. M., p. 70, pi. 

 2, f. 5 a-c, '89 ; Tr. W. I. S., 3, p. 855, 1898. 

 Distribution. — Hatteras to Venezuela. Recent. Typical form 

 not on Gulf coast, 

 swiftiana variety harrisi Dall, Tr. W. I. S., 3, p. 855, 1898. 



Corbula, sp. indet., Harris, 4th Ann. Rept. Texas for 1892, 



p. 121, pub. 1893. 

 swiftiana ? Harris, Bull. Am. Pal. 1, No. 3, p. 94, pi. 2, f. 6, 

 i895. 



Distribution. — Pleistocene to Upper Miocene, Galveston well, 

 300 (?) to 2920 feet (Harris). 

 (Cnneocorbula) dietziana C. B. Adams, Contr. Conch., p. 235, 

 1852 ; Dall, Bull. M. C. Z., 9, p. 114, '8i ; 12. p. 314, pl> 

 1, f. 5, a-b, 1886 ; Bull. 37, U. S. U. S. , p. 70, pi. 1, f. 5, 

 a-b, 1889. 



Distribution. — Hatteras to Barbados, 14-100 fms. Gulf coast. 

 Dredged off West Florida, 30 fms. 

 (Cuneocorbula) whitfieldi Dall, Tr. W. L S., 3, p. 849, pi. 36, f. 18, 



1898. 



Distribution. — Miocene of Oak Grove sands, West Fla., and (a 

 varietal form) Bascom No. 1 well, Mobile, Ala., at 1500- 

 1556 feet, Oak Grove horizon (Aldrich). 

 (Cuneocorbula) conradi Dall, Tr. W. I. S. 3, p. 842, 1898. 



nasuta Conrad, Mexican Boundary Rept. I, p. 161, pi 19, f. 

 4, 1857 : Singley, 4th Ann. Rept. Texas, p. 330, 1892 

 Dall, Bull. 37, U. S. N. M., p. 70, pi. 2, f. 6a, b, c, d 



