Notes on Species of Coroiculadce. 221 



cente nitidissima, intus alba, in medio macula rubescente notata ; urn- 

 bonibus minimis acutis ; cardine angusto. 



Long. 13 ; lat. 10 ; diam. 6 mill. 



Hah. — In rivulis Bengalensibus. Collect. Mus. 



r, . y-N . -i-» ■ c - Bengalica. 



lint, Cuming et rnme. 



The shell is oval, subtrigonal, somewhat compressed, nearly 

 equilateral. The striae are indistinct, regular, and distant; the 

 epidermis is yellowish and polished. The interior is reddish. 

 The beaks are small and acute. The hinge is narrow and 

 slightly curved. The lunula is very indistinct. 



This species is very closely allied to Corb. pidchella, of Java ; 

 it differs, however, in being transversely longer and in being a 

 little less compressed. 



39. CorblCllla ll'igOlia, Deshayes. 



Corbicula trigona, Deshayes. Proc. Zool. xxii. 344. 1854. 

 Biv. Brit. Mus. 224. 1854. 

 Prime Cat. 3. 1863. 



C. testa trigona, aequilaterali, compressiuscula, antice paulo latiorc et 



obtusiore, utroque latere aequaliter declivi, transversim 



. . . . .... Fl <>. 53- 



tenue et regulariter striata ; epidermide viridi, nitente 



induta, intus pallide violacea; umbonibus minimis, bre- 

 vibus, aoutis; lunula ovata, pallida, laevigata. 



Li a i j. -i i J • fr "n Corb. trigona. 



ong. 14; lat. 11; diam. 7 mill. 



Hab. — Pondicherry, Indiae. Coll. Cuming et Prime. 



The shell is trigonal, equilateral, and somewhat compressed. 

 The anterior side is broader and more obtuse. The striaa are 

 light, close, and regular. The epidermis is green and polished. 

 The valves are moderately solid. The interior is pale violet. 

 The beaks are small, short, and acute. The lunula is oval and 

 much lighter in color than the rest of the epidermis. The 

 hinge is broad and arched. The anterior lateral tooth is con- 



