132 BULLETIN 90, UNITED STATES NATIONAL MUSEUM. 



Family CARDITIDAE. 



Genus VENERICARDIA Lamarck. 



Venericardia Lamarck, Syst. des. Auim. s. A'ert., 1801, p. 123. Type. F. 



imhricata Lamarck. Eocene. 

 Cardissa Oken, Lehrb. d. Naturg., voL 3. 1815, pp. vni, 232, 234 ; not of 



Megerle, 1811. 

 Megacardita Sacco, Moll. Piem. Lig., vol. 27, 1899, p. 9. Tyi^e, V. jouanneti 



Basterot. 

 Venericardia Dall, Trans. Wagner Inst., vol. 3, pt. 6, p. 1416, 1903. 



VENERICARDIA SERRICOSTA Heilprin. 



Plate 20, fig. 6. 



Cardita (Carditamera) serricosta Heilprin, Trans. Wagner Inst., vol. 1, 



p. 117, pi. 16, fig. 64, 1887. 

 Cardita serricosta Dall, Trans. Wagner Inst., vol. 3, pt. 5, p. 1194, pi. 38, 



fig. 9, 1900. 

 Venericardia serricosta Dall, Trans. Wagner Inst., vol. 3, pt. 6, p. 1428, 



1903. 



Oligocene of the Tampa silex beds at Ballast Point, Tampa Bay, 

 and of Bailey's Mill Creek Sink, in Jefferson County, Plorida. 

 U. S. Nat. Mus. No. 165192. 



All collectors who have visited the silex beds have obtained 

 this species, which is one of the most common bivalves of that hori- 

 zon, and, when silicified, one of the most elegant. 



VENERICARDIA HIMERTA Dall. 



Cardita (sp.) Dall, Trans. Wagner Inst., vol. 3, pt. 5, p. 1196. pi. 40, 



fig. 16, 1900. 

 Venericardia himerta Dall, Trans. Wagner Inst, vol. 3, pt. 6, p. 1430, pi. 



53. fig. 12, 1903. 



Oligocene of the Tampa silex beds at Ballast Point, Tampa Bay, 

 and of the Oak Grove sands at Oak Grove, Santa Rosa County, 

 Florida. U. S. Nat. Mus. No. 166109. 



Genus CARDITA (Bruguiere) Lamarck. 



Cardita (part) Bruguiere, Encycl. Meth., vol. 1, p. ■iOl, 1792. 



Cardita Lamarck, Prodr. Nouv. Class Coq., 1799, p. 86. Sole example, C. 



calyculata Bruguiere. — Dall, Trans. Wagner Inst., vol. 3, pt. 6, p. 1411. 



1903. 



Section CARDITAMERA Conrad. 



Carditamera Conrxd, Foss. Medial. Tert., p. 11, 1838. Type, Cypricardia 



arata Conrad, 1832. — Dall, Trans. Wagner Inst, vol. 3, pt. 6, p. 1412, 



1903. 

 Lazaria Gray, Ann. Mag. N. Hist., vol. 14, p. 22, 1854. Type, L. radiata 



Reeve. 

 Lazariella Sacco, Moll. Piem. e Lig., 1899, p. 112. Tyi>e, Cardita subalpina 



Michelotti. 



