PYRAMIDELLIDiE. 89 



SCALARIA CLATHRUS. — Linn. 

 Plate XIV. Pig. I. 



Scalaria clathrus, var. b., Say, Amn. Conch., iii, pi. 27. 



Scalaria clathrus, Ravenel, Cat. Coll. Shells, p. 13. 



Scalaria clathrus, De Kay, Zool. New York, Art. Mollusca, p. 127. 



Scalaria clathrus, L. R. Gibbes, Tuomey's Geol. So. Ca., appendix, p. xx. 



Scalaria clathrus, Tuomey $ Holmes, Pleiocene Foss. So. Ca., p. 124, pi. xxvi, fig. 15. 



Clathrus clathrus, R. Sf A. Adams, Gen. Moll., Vol. 1, p. 222. 



Scalaria clathrus, Say, Conch. U. S., ed. Binney, p. 179. 



Description. " Shell conic, turreted, imperforate, white, immaculate; whorls from six 

 to eleven, touching each other only by the ribs, but with a narrow interval; ribs nine to 

 each volution ; prominent, simple, a little oblique ; somewhat recurved, and with a more 

 or less obvious obtuse angle or shoulder above, near the suture ; aperture oval-orbicular ; 

 base a little angulated ; labium distinct." — Say. 



Common on the Carolina coast, and in the Post-Pleiocene beds. 



Plate XIV. Fig. 1, Natural size. 



Locality. Simmons'; Cainhoy ; Waccamaw. 



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



SCALARIA AN GU LATA. -Say. 

 Plate XIV. Fig. 2. 



Scalaria angulata, Say, Amn. Conch., pi. 27. 



Scalaria clathrus, Say, Conch. U. S., ed. Binney, p. 179. 



Description. As regards this species there seems to be some doubt with Mr. Say ; he 

 calls it a variety of S. clathrus, but to our mind it is a distinct species. The outline of 

 the shell is very unlike that of S. clathrus, being more conical and shorter, and the 

 angular, pointed ribs will always distinguish it. We have had several hundred recent 

 specimens from the coast of South-Carolina, and are satisfied they are distinct. 



Plate XIV. Fig. 2, Natural size. 



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



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