T E L L I X I D .E . 53 



Genus, CUMINGIA.— Sow. 



CUMIN GIA TELLINOIDES. 

 Plate YIII. Fig. 12. 



Mactra lellinoides, Con., Jour. Acad. Nat. Sci., Vol. 6, p. 258, pi. 11, figs. 2, 3. 

 Cumingia tellinoides, Con., Foss. Ter. For., p. 28, pi. 15, fig. 4. 

 Lavignon tellinoides, (TOrb., Prod, de Paleontologie, Vol. 3, p. 101, No. 1891. 

 Lavignon tellinoides, Tuomeij S^- Holmes, Pleiocene Foss. So. Ca., p. 92, pi. 23, fio-. 1. 

 Cumingia tellinoides, Adams, Gen. Recent Shells, Vol. 2, p 412. 



Description. Shell ovate, thin, fragile, with numerous raised concentric striae ; one 

 end regularly rounded, the other slightly compressed and somewhat pointed at the 

 extremity; lateral teeth distinct in one valve, in the other obsolete. — T. 8f H. 



Conrad says this shell inhabits the Northern Atlantic coast of the United States. 



Pl.^te VIII. Fig. 12, Exterior and interior of shell, natural size. 



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



Genus, ENSIS.— Schum 



ENSIS ENSIS. 

 PL.iTE VIII. Fig. 13. 



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



Solen ensis, Lamk., An. sans Vert., 2d Ed., Vol. 6, p. 55. 



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



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



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



Solen ensis, Ravenel, Cat. Coll. Shells, p. 2. ' 



Solen ensis, L. R. Gibbes, Tuomey's Geol. So. Ca., appendix, p. xxii. 



Solen ensis, Tuomey 6f Holmes, Pleiocene Foss. So. Ca., p. 101, pi. 24, fig. 3. 



Solen ensis, Sti?npso?i, Shells New-England, p. 22. 



Ensis ensis, Adams, Gen. Recent Shells, Vol. 2, p. 342. 



Description. Shell sword-shaped ; dorsal and pallial margins parallel ; buccal and 

 14 



