216 CYREKID.I. 



regulariter auguste sulcata ; antice paullulum acuminata, postice 

 f-iibtruncata ; umbonibus iiiflatis, Aalde prominentibus, erosis ; 

 margine dorsali fere atigulato, marg. autico rotundato, marg. 

 postico rotundato, marg. ventrali Aalde convexo ; lij^araentum 

 curtum, solidum, lunula triangulata ; cardine valde incrassato ; 

 dentibus cardinalibus crassis ; dent, lateral. pauUulum arcuatis, 

 subsequalibns ; margarita suturate violacea. 



Long. 12, lat. 11*5, diam. 10 mm. 



Hah. Ceylon. 



Type in the British Museum. 



S'lO. Corbicula nevilli, Clessin 



Corbioda nevilli, Clesiin, Mai. Blatt. ix, n. f. 1887, pp. 70-71, pi. 2, 

 fig. 5. 



Original description : — Testa parvula, modice solidula, ovato- 

 rotunclata, nitidula, sulcis distantibus ornata, epidermide flaves- 

 cente ; antice vix subacuminata, rotundata ; postice subtruncata, 

 umbonibus paullulum elevatis, erosis ; margiue dorsali valde 

 arcliato, marg. antico rotundato, m. postice rotundato, m, inPerioir 

 convexo ; ligamentum crassium ; lunula profunda ; cardine in- 

 crassato ; dentibus cardinalibus tenuibus ; dent, later, sub- 

 jequalibus, siibarcuatis ; mai-garita violacea, sub umbo, pallida. 



liOng. 12, lat. 14*5, diam. 9 mm. 



Hah. Assam, 



350. Corbicula occidens, Deshayes. 



Corbicula ocm/e«s, Deshayes, Cat. Brit. Mus. Couchif. 1854, p.223; 

 Prime, Arm. Lye. Nat. Hist. N.Y. viii, 1866, p. 220, tig. 51 ; 

 11. & T., C. L p\ 55, pi. V6S, tigs. 8, 9. 



Orp/inal descrij^tion : — Testa ovato- transversa, sequilaterali, 

 tumida, tenui, transversim regulariter lirato-sulcata ; epidermide 

 flavescente-viridi vestita, ad umbones atro-\ iolascente vel breviter 

 albo radiata ; umbonibus tumidis, brevibus, Itevigatis ; lunula 

 ovato-lanceolata, pallida, laevigata; valvis intus- profunde fusco- 

 violascentibus ; cardine angusto, ina-qualiter trideutato ; dentibus 

 lateralibus brevibus augustis albis tenue striatis. 



Hah. 8ikkim ; Moradabad, Bengal. 



The dimensions given belosv are taken from three specimens in 

 the British Museum : — 



T^^ng 



Lat 



Diam 



351. Corbicula iravadica, Blanford. 



Corbicida iravadica, Blanford, J. A. S. B. xlix, 1880, pp. 221-222 

 II. & T., C. I. 1876, p. 02, pi. 115, tig. 8. 



