54 Bulletin 34 86 



Proc. Acad. N. S., Phila., p. 577, '63, (as Codakia). Not 

 mulHstriatus Tiiomey and Holmes. 

 Note. — Dr. Dall questions whether this species is found in the 

 Recent, but our specimens resemble the type closely ex- 

 cept in not having the interior margin crenulated. To 

 the larger, flatter recent shell from the West Indies, char- 

 acterized by less pronounced resting stages. Dr. Dall has 

 given the varietal name of blandtcs. (B. U. S. Fish Comm., 



1, P- 493. pl- 6, fig. 13, 1901.) 



Distribution. — Hatteras to Cuba, 0-18 fms. Miocene to Re- 

 cent. Gulf coast. — Ft. Barranca and Crooked Isl., Fla. 

 Pliocene : Caloosahatchie and Shell Creek. 

 (Cavsiuc-ma) recurrens Dall, Tr. W. I. S., 3, p. 1369, pl. 52, f. 11, 

 1903. 



Distribution. — Miocene of Jamaica, Chipola River marl and 

 Oak Grove sands, Fla., and of the Mobile, Ala., No. 2 

 v\''ell, Bascom race track, at 1241 and 1600 feet. 



Note. — This little shell vv^as common in the Mobile region dur- 

 ing Miocene time, as there are twenty-five valves from the 

 Alabama well. They agree perfectly with specimens from 

 Oak Grove. 

 (Lucinisca) piesiolophus Dall, Tr. W. I. S., 3, p, 1196, pl. 40, f. 



2, 5, 1900, {2,% Lucina); Idem, p. 1371, 1903. 

 Distribution. — Miocene of the Oak Grove sands, Santa Rosa 



County, Fla., and of the Mobile Oil Company's No. 2 

 well, Bascom race track, near Mobile, Alabama, at 1241 

 feet. 

 (Lucinisca) nassuia Conrad, Am. Jour. Sci., 2, p. 392, 1846, (as 

 Lucina); Proc. A. N. S. Phila., 3, p. 24, '46 ; Dall, Proc. 

 U. S. N. M., 23, p. 808, '01 ; Tr. W. I. S., 3, p. 1372, 

 '03 ; Vanatta, Proc. A. N. S. Phila., 55, p. 756, '03 ; 

 Vaughan, Publ. Carn. Inst., 133, p. 171, 19 10. 

 Imtea Conrad, Am. Jour. Conch., 2, p. 281, pl. 15, f. 7, '66; 

 Dall, Bull. 37, p. 52, '89. 

 Distribution. — Hatteras to Cuba, 0-200 fms. Pleistocene to 

 Recent. Gulf coast. — Recent : Cedar Keys, Ft. Barran- 

 ca, St. Mark's, St. Joseph's Bay, Crooked Island, Fla. ; 



