72 



Notes on Species of Corhiculadce. 



Corbicula Sayana. 



angusto ; striis regularibus ; epidermide viridescente, nitente vestita ; 

 Fig 19 lunula nulla. 



Long. 20 ; lat. 16 ; diam. 10 mill. 



Ilab. — Insulae Philippinenses. Collect. 

 "Wheatley et Prime. 



The shell is somewhat slight, transversely 

 oval, subtrigonal, compressed, and nearly equi- 

 lateral. The anterior side is rounded and the 

 posterior is longer and obtuse. The beaks are 

 small and not much raised. The interior is 

 blackish-violet and very highly polished on the 

 margins. The hinge is narrow, rounded, and rather delicate. 

 The striae are very regnlar. The epidermis is greenish and 

 polished. The lunula is wanting. 



Very closely allied to Corbicula Manillensis, it is however 

 less equilateral, less inflated, transversely less rounded, the pos- 

 terior side is more produced, the beaks are less full, and the 

 strise are closer. Compared with Corbicula striatella, from In- 

 dia, it is a little slighter, more elongated, and not so oval. 



18. Corbicula Crosseana, nov. spec. 

 C. testa ovato-transversa, inllata, subaequilaterali ; umbonibus tumi- 

 FlG go. dulis ; latere antico rotundato, postico subobtuso ; 



margarita violacea ; cardine incrassato, arcuato ; 

 sulcis elevatis, regularibus ; epidermide pallide 

 viridi-fuscescente, subnitente induta ; lunula indis- 

 tincta. 



Long. 25 ; lat. 21 ; diam. 11 mill. 



Ilab. — Insulae Philippinenses. Collect. 

 "Wheatley et Prime. 



The shell is transversely oval, inflated, 

 and subequilateral. The anterior side is 

 corbicula Crosseana. rounded and the posterior somewhat obtuse. 

 The beaks are small and inflated, and when eroded show a 



