62 Bulletin 34 94 



Distribution. — Recent ; West Florida near the Manatee River. 



Pleistocene : Osprey, Manatee and Labelle, West Florida. 



Pliocene : Caloosahatchie. 

 limpida Dall, Proc. U. S. N. M., 21, p. 894, pi. 97, f. 5, n, 1899. 

 Distribution. — Type dredged at 85 fms. in the Gulf of Mexico, 



5 miles off Cape Florida. 



Genus SPORTELLA Deshayes 

 constricta Conrad, Am. Jour. Sci., 41, p. 347, pi. 2, f. 15, 1841, 

 (as A mp hides ma); Fos. Medial Tert. p. 76, pi. 43, fig. 10, 

 1845 ; Dall, Tr. W. I. S., 3, pi. 25, f. 4, 4^ 1898 ; Idem, 

 p. 1615, 1903. 



Distribution.— Miocene of Va. and N. Car. ; Pliocene : Caloosa- 

 hatchie and Shell Creek, Fla. ; Pleistocene : North 

 Creek, Manatee Co., Fla. Not recorded from the Recent. 

 The Fabella constricta Dall, Bull. 37, p. 48, '89, was later 

 referred to Anisodonta elliptica Recluz. 



Genus CARDW1Y5 Linnaeus 

 (Trachycardsum) isocardia Linnaeus, Syst. Nat., ed. X, p. 679, 

 1758 ; Chemnitz, Conch. Cab., 6, p. 182, pi. 17, f. 174-176, 

 1782 ; Reeve, Conch. Icon., 2, Cardium, pi. 17, f. 84, 

 1845 ; Holmes, Post-Pi. Fos. S. C, p. 25, pi. 5, f. 4, '60 ; 

 Dall, Bull. 37, p. 52, '89 ; Post, Nautilus,, 13, p. 23, '99 ; 

 Dall, Tr. W. I. S., 3, p, 1085, 1900 ; Vanatta, Pr. A. N. 

 S. Phila., 55, p. 757, '03 ; Vaughan, 2d Ann. Rept. Fla., 

 p. 148, '09 ; Publ. 133, Carn. Inst., p. 171, 1910. 

 egmo?itiannm Shuttleworth, Journ. de Conchyl., 5, p. 472, 

 1856. 



Distribution. — Hatteras to Trinidad. Miocene to Recent. 

 Gulf coast. — Recent : Tampa and St. Joseph's Bays, 

 Crooked Isl., Alligator Harbor, Ft. Barranca, Fla. ; Cor- 

 pus Christi, Tex. Pleistocene : Osprey, Labelle and 

 Manatee, Fla. : New Orleans pumping station No. 7. 

 Pliocene : Caloosahatchie. 

 (Trachycardium) muricatum Linnaeus, Syst. Nat., ed. X, p. 680, 

 1758 ; Reeve, Conch., Icon., 2, Cai'dium, pi. 6, f. 33, 1844; 



