The Tellen Shells. Sunset Shells. Wedge Shells 



The Small-toothed Wedge Shell (D. denticulatus, Linn.) 

 is finely grooved from the beaks outward, and the ventral mar- 

 gins meet in a series of interlocking teeth. These are larger and 

 thicker shells than the Floridian species. The posterior area 

 is set off by two-angled ridges. The white surface is rayed with 

 red, blue or orange. Length, i inch. 



Habitat. — West Indies. 



Genus HETERODONAX, Morch 



Heterodonax bimaculatus, d'Orb., is excluded from the 

 proper wedge shells by its thin, oval form, and concentric ridges. 

 It is like them in being many-coloured, in rays and stripes, purple, 

 salmon and white. It is distinctly larger at San Diego than at 

 San Pedro. The name calls attention to two distinct spots 

 which are usually plainly seen. Length, less than i inch. 



Habitat. — Southern California. Florida. 



Genus PSAMMOBIA, Lam. 



This genus is represented in California by P. Californica, Conn, 

 a beautiful white porcellanous shell rayed with red. It reaches 

 five inches in length at Puget Sound. 



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