1920.] 



NATURAL SCIENCES OF PHILADELPHIA. 



325 



(Pilsbry). Kauai: Hanalei river (Bryan). Laysan Island (Capt. 

 Brown) . 



Near the figure of SaniiUa deshayesi Sowb., l)ut more elongate, 

 not so abrupt posteriorly. Erycina ovata Gld." is less inequilateral, 

 and the anterior truncation is a Uttle oblique. The teeth, too, 

 appear to differ, if Gould's figure is correct. 



Solecardia hawaiensis obesior n. sub.p. Fig. 6, d, e. 



Similar to »S'. hawaiensis, but plumper, shorter, with wider beaks. 

 Length 7, altitude 5.3, diameter 4.7 mm. 

 Honolulu Harbor (W. A. and E. L. Bryan). 



Fig. 6. — a, b, Solecardia hawaiensis, interior and dorsal views of right valve; 

 c, hinge of left valve, d. c, Solecardia hawaiensis ohesior, lateral and dorsal 

 views. 



Solecardia stigmatica n. sp. Fig. 7 



The shell is very thin, fragile, somewhat ovate, the anterior end 

 narrower, posterior end broadly rounded, rather compressed, white, 

 with a median radial russet band, fading at the edges and below. 

 Surface glossy, marked with faint growth lines. Interior dull. Right 

 valve having a slender, erect cardinal tooth. Left valve with an 

 elongate, lower one. 



"U. S. Expl. Exped. Mollusca, p. 401, pi. 44, figs. 387-3876. Sandwich Is- 

 lands. 



