PLEIOCENE FOSSILS. 101 



PHOLADOMYA.— Sowerby. 

 The genus Pholadomya commenced its existence in the seas of the Liassic period. 



PHOLADOMYA ABRTJPTA.— Con. 



V 

 Plate XXIf. Fig. 2. 



Pholadomya abrupta, Con., Foss. Med. Ter. For., p. 3, pi. 1, fig. 4, 



P. testa oblongo-ovali, compressa, concentrice rugosa, costis irregularibus quatuor vel 

 quinque apice diver gentibus; margine buccali rotundata crassa; margine anali truncata 

 rejlexa, tenui. 



Description. Shell oblong-oval, compressed, concentrically rugose, with four or five 

 irregular ridges or ribs diverging from the apex; buccal margin rounded, thick; anal 

 margin truncated* reflected, thin. 



Plate XXIV. Fig. 2, Natural size, 



Locality. Sumter District; Smith's, Goose Creek. 



Museum, College of Charleston. 



SOLEN.— Linn. 



SOLEN ENSIS. — Linn. 

 Plate XXIV. Fig. 3. 



Solen ensis, Linn., Syst. Nat., 1114. 

 Solen ensis, Lam., An. sans. Vert., Vol. 6, p. 55. 

 Solen ensis, Con., Marine Conch., pi. 5, fig. 1. 

 Solen curvus, Lister, Conch, t. 411, fo. 257. 

 Solen ensis, Gould, Invert. Mass., p. 28. 



S. testa ensiformi; margine dorsali et palliali parallelis; margine buccali et anali sub- 

 truncatis. 



