220 Notes on Species of Corbiculadce, 



more obtuse, the hinge is narrower and more delicate, and the 

 strise are very much more distant. 



37. CorblCllIa OCCideflS, Benson. 



Corbicula occidens, Benson. Asiatic Journal. Biv. Brit. Mus. 223. 1854. 

 Prime Cat. 4. 1863. 



C. testa ovato-trans versa ; aequilaterali, tumida, tenui ; extremitatibus 

 obtusis: umbonibus tumidis, brevibus, incurvis ; lunula 



Fig. 51. ' . . . . 



ovato-lanceolata, pallida, laevigata ; valvis intus profunde 

 violascentibus ; epidermide flavescente-viridi, nitente ves- 

 tita, ad umbones atro-violascente radiata; striis regula- 

 ribus ; cardine ano-usto. 



Corb. occidens. ' ° 



Long. 17; lat. 14; diam. 9 mill. 



Hah. — Loco Sikkim dicto, Moredabad, Bengal, Indise. Col- 

 lect. Mus. Brit., Cuming et Prime. 



The shell is transversely-oval, equilateral, somewhat inflated, 

 and rather slight. The sides are obtuse. The beaks are mode- 

 rately inflated, not large, and they curve inwardly. The lunula 

 is oval and of a lighter color than the rest of the shell. The 

 interior of the valves is dark violet. The epidermis is yellow- 

 ish-green and polished, the beaks exhibit markings of a dark 

 violet color. The strise are regular. The hinge is narrow and 

 slight. 



Compared with Corb. tumida, it is more equilateral, less 

 inflated, the sides are less obtuse, the beaks are less convex, the 

 hinge is more curved, and the strise are very much closer. 



38. Corbicula Bengalica, Deshayes. 



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



Biv. Brit. Mus. 224. 1854. 

 Prime Cat. 4. 1863. 



C. testa ovato-subtrigona, depressiuscula, tenui, subaequilaterali, obso- 

 lete transversim striata, striis regularibus, distantibus ; epidermide flave6- 





