OF CONCHOLOGY. Ill 



from it by the whorls being less convex and the columella straight 

 instead of incurved. 



Named after Mr. C. W. Peale, of Philadelphia, a gentleman 

 much interested in conchology. 



5, ? Cyclostoma Leai, Tryon. — PI. 10, fig. 6. 



Description. Shell globosely conic, narrowly umbilicate ; 



whorls five, convex, closely spirally striated ; aperture oval ; lip 

 slightly reflected. Epidermis light brown, crossed by zigzag 

 darker flames, which are most apparent below the sutures. 

 Operculum ? 



Dimensions. — Diam. 16, alt. 19, mill. 



Helicina Nicobarica, Phil. 



Two specimens which I have carefully examined appear to 

 belong to this species, although the colored band is very indis- 

 tinct in one individual and not visible in the other. Mr. Sow- 

 erby (Thes. Conch, iii, t. 276, f. 381, 382) has confounded 

 H. Anda7nanensis, Benson, with this species, but Andamanensis 

 is much larger and, I think, distinct. 



SCARABUS TRIGONUS, TrOSchel. 



