46 POST-PLEIOCENE FOSSILS. 



buccal margin rather shorter than ventral; basal margin nearly rectilinear from behind the 

 middle to the anterior termination. — T. 4- H. 



Plate VIII. Fig. 2, Exterior of fossil shell, natural size. 



Locality. Simmons'. Museum, College of Charleston; Cabinet F. S. H. 



PEEONJ1A TENTA. 

 Plate VIII. Fig. 3. 



Tellina tenta, Say, Amn. Conch., pi. 65, fig. 3. ll^U 



Tellina tenta, Adams, Boston Jour. Nat. Hist., Vol. 3, p. 332. 



Tellina tenta, Gould, Invert. Mass., p. 68, fig. 43. 



Tellina tenta, De Kay, Zool. New- York, Art. Mollusca, p. 210. 



Tellina tenta, Stimpson, Shells New-England, p. 21. 



Tellina tenta, Ravenel, Amn. Conch., Say's observations on pi. 65. 



Tellina tenta, Say's Conch. U. S., (Binney,) p. 228. 



Peroneea tenta, Adams, Gen. Recent Shells, Vol. 2, p. 399. 



Description. Shell transversely oblong, fragile, smooth externally; polished within 

 and radiately striated; striae almost obsolete; beaks behind the middle, slightly elevated; 

 buccal side regularly rounded; anal side sub-angular, curved to the right, gaping, tip 

 obviously truncated ; hinge delicate, with two cardinal teeth in right valve, and one in the 

 left ; lateral teeth, one in right valve, with corresponding depressure in the left. 



Living on the coast of United States, from Cape Cod to Florida, but rarely found fossil 

 in the Post-Pleiocene. 



Plate VIII. Fig. 3, Left valve, natural size. 



Locality. Simmons'. Museum, College of Charleston; Cabinet F. S. H. 



