326 



PROCEEDINGS OF THE ACADEMY OF 



[Nov., 



Length 5.3, altitude 3.5, diameter 1.8 mm. 



Hilo, Hawaii, D. Thaanum. 



Easily known by the rich brown stripe. 



Fi{^. 7. — Solecardia stigmalica n. sp. Fig. <S. — Solccardia thaanumi, n. sj). 

 Solecardia (Scintilla) thaanumi n. sp. Fig. S. 



The shell is white, oblong, the basal margin slightly more curved 

 than the upper, not gaping; ends rounded, the anterior slightly 

 shorter; compressed, slightly inequilateral. Beaks very small, 

 capped with minute, orbicular embryonic valves. Surface with 

 faint growth lines. Interior dull, minutely vermiculate with white 

 on a grayish ground outside of the pallial line, which is distinct and 

 irregular. Cardinal tooth of right valve very low, indistinct. 



Length 6.75, altitude 4.25, diameter 2.4 mm. 



Hawaii: Hilo, D. Thaanum. 



Solecardia (Scintilla) chascax n. sp. Fig. 9. 



The shell is very thin, fragile, compressed, oblong, subequilateral, 

 broadly gaping below ; whitish, translucent. Hinge margin straight; 



Fig. 9. — Solecardia chascax, interior and ventral views. 



basal margin straightened in the middle, then somewhat dilated 

 anteriorly; ends rounded. Beaks very small. Both valves have a 

 very low, indistinct cardinal nodule but no other teeth. 



Length 6.9, altitude 3.8, diameter 2 mm, 



Hawaii: Hilo, D. Thaanum. 



