TELLINID.E. 45 



PERON^ODERMA ALTERNATA. 



P.ATE YIII. FlO. 1. 



Tellina altenitila, Say, Jour. Acad. Nat. Sci., Vol. 2, p. 275. 

 Tellina alternata, Say, Amu. Concli., pi. 65, fig. 1. 

 Telliua alternata, Bavenel, Cat. Recent Shells, p. 4. 

 Tellina al tenia! a, De Kay, Zool. New-York, Art. Mollusca, p. 211. 

 Tellina alternata, L. R. Gibbes, Tuomey's Geol. So. Ca., appendix, p. xxi. 

 Tellina alternota, Titomey Sf Holmes, Pleiocene Foss. So. Ca., p. 89, pi. 22. 

 Tellina alternata, Say's Conch. U. S., (Binney,) pp. 96, 228. 

 PeronfBoderrna alternata, Adams, Gen. Recent Shells, Vol. 2, p. 396. 



Description. Shell compressed, oblong, narrowed and angulated before ; with numerous 

 parallel, equal, equidistant, impressed, concentric lines, which on the anterior margin are 

 alternately obsolete; interstitial spaces flat. — T. c^ H. 



A callous line which is sometimes obsolete, passes from behind the hinge to the inner 

 margin of the posterior cicatrix, and another from before the hinge to the inner margin of 

 the anterior cicatrix. Anterior hinge-slope declining in a somewhat concave line to an 

 obliquely truncated tip. 



This is a common species, living on the coast of South-Carolina and Georgia, and not 

 unfrequent on the beach of Florida. 



Plate VIIT. Fig. 1, Natural size. 



Locality. Simmons'; Abbapoola Creek, John's Island. 



Museum, College of Charleston; Cabinet F. S. 11. 



A N G U L U S P L I T A . 

 Pm-e V^III. T'g. 2. 



Tellina polita, Say, Jour. Acad. Nat. Sci., Vol. 2, p. 276. 



Tellina polita, Ravenel, Cat. Coll. Shells, p. 4. 



Tellina polita, L. R. Gibbes, Tuomey's Geol. So. Ca., appendix, p. xxi. 



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



Tellina polita, Tuomey c\ Holmes, Pleiocene Foss. So. Ca., p. 91, pi. 22, fig. 6. 



Tellina polita, Say's Conch. U. S., (Binney,) pp. 97, 228. 



Angulus polita, Adams, Gen. Recent Shells, Vol. 2, p. 398. 



Description. Shell transversely sub-triangular, minutely and concentrically wrinkled; 

 12 



