76 Notes on Species of Corbiculadce. 



The shell is small, transversely oval, nearly equilateral, aud 

 slightly inflated. The lateral margins are obtuse. The beaks 

 are small, acute, and they curve inwardly. The interior is 

 violet. The striae are regular. The epidermis is greenish-olive. 

 The lunula is quite distinct and of a paler color than the rest of 

 the shell. 



Compared with Corbicula Quilonensis, this species is more 

 equilateral and the posterior side is less produced ;. the beaks 

 are also less inflated and more approximate. It is less inflated 

 and has closer striae than Corbicula tumida. 



23. Corbicula parvula, Prime. 



Corbicula parvula, Prime. Acad. K S. Phil. 127. 1861, 

 Prime Cat. 4. 1863. 



C. testa ovato-transversa, compressiuscula, sequilaterali ; extremitatibus 



F ^ obtusis ; umbonibus parvulis, acutiusculis, incurvis, brevibus ; 



^^%^ sulcis irregularibus, obsoletis ; epidermide pallide viridi-fla- 



C^?%) vescente, nitente vestita ; margarita pallide violacea ; cardine 



^M anjmsto ; lunula pallida. 



C, parvula. Long> ^ . ] at> 9 . diam Q ^1^ 



Hah. — India. Collect. Prime. 



The shell is rather slight, rounded-oval, compressed, and 

 equilateral. The lateral margins are obtuse. The beaks are 

 small, acute, not raised, they curve inwardly and are very 

 approximate. The striae are irregular and somewhat obsolete. 

 The interior is pale violet. The epidermis is pale greenish- 

 yellow and polished. The lunula is discernible and is paler 

 than the rest of the shell. The hinge is nearly straight and 

 narrow. The teeth are very slight and delicate. 



Compared with Corbicula subradiata, this species is smaller, 

 more transverse, less trigonal, and the beaks are considerably 



