"XATICID.K. (51 



zigzag lines; sometimes white, without lines; umbillicus nearly closed by lateral pressure 

 of callus, which is white. The fossil specimens are nearly all white, and the shell thick 

 and strong. 



It is recent upon the coast from Massachusetts southward. 



Plate XII. Fig. 15, Natural size. 



" 15(2, Magnified view. 



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



CATIN US.— Klein. 



C A T 1 N U S F E K S P E C T I V U S . — H . & A . Adams. 

 Plate XII. Fig. 16. 



Sigaretus perspectivus, Saij, Amn. Conch., pi. 25. 



Sigaretus perspectivus, Sai/, Conch. U. S., ed. Bi?inei/, pp. 175 and 205. 



Cryptostoma perspectiva, Sai/, Amn. Conch., iii, pi. 25. 



Cryptostoma perspectiva, Saij, Conch. U. S., ed. Binney, pp. 175 and 205. 



Calyptostoma perspectiva, De Kay, Zool. New-York, Art. Moll., p. 153, pi. vii, fig. 156. 



Sigaretus perspectivus, Ravenel, Cat. Coll. Shells, p. 12. 



Sigaretus perspectivus, L. R. Gibbes, Tuomey's Geol. So. Ca., appendix, p. xx. 



Catinus perspectivus, H. Sf A. Adams, Gen. Mollusca, Vol. 1, p. 212. 



Description. Shell oval, very much depressed, but little convex, with numerous 

 transverse, slightly undulated, sub-equidistant, impressed lines and longitudinal wrinkles ; 

 transverse lines obsolete beneath ; spire not at all prominent, only a little convex ; volu- 

 tions about three ; suture a simple, impressed line ; within, the slightly elevated line is 

 more or less obvious, not reaching the margin of the labrum ; revolution of the whorls 

 visible almost to the summit. 



This shell is recent from the coast of New-Jersey southward, and abundant on the 

 coast of South-Carolina. 



Plate XII. Fig. 16, Natural size. 



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



21 



