62 BULIvETlN 34 94 



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



Pleistocene : Osprey, Manatee and L,abelle, 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 Amphidesmd); 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 CARDIUIV! Linnaeus 

 (Trachycardium) isocardia Linuccus, Syst. Nat., ed. X, p. 679, 

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

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

 1845 ; Holmes, Post-Pl. 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., ^s, p. 757, '03 ; Vaughan, 2d Ann. Rept. Fla., 

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

 egmontianum 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) murlcatum Linnaeus, Syst. Nat., ed. X, p. 680, 

 1758 ; Reeve, Conch., Icon., 2, Cardtjcm, pi. 6, f. 33, 1844; 



