2Ji BIVALVE SHELLS. 



11. CoRBicuLA Bengalensis. B.M. 



('. ti'stii ovato-siibtrif^oiiii. deprcssiuscula, tonui, siibirquilaterali, 

 ohsoU'ti' transversim striata, striis rcfjiilaribus distantibus ; 

 I'pitkniiide Havcscente nitidissima, intus alba, in medio macula 

 rulK-sciMitc notata ; umbouil)iis minimis acutis; cardine angusto 

 tridi'ntato, altcro bidentato ; dentil)us latcralibus an^iistissimis, 

 ar^'uto striatis. 



(Jorbicula Bengalensis, Desk. Proc. Zool. Soc. 1854. 

 lla/j. In rivulis Bengalensibus. Coll. Cmning. 



12. CORBICULA striatella. B.M. 



C. testa ovato-transversa, depressiuscula, subaequilatcrali, extre- 

 initatil)us irqualitor obtusa, transversim regulariter lirata, liris 

 ad latus posticum evauescentibus ; epidermide pallide virides- 

 eeute, nitente vestita ; intus atro-violacea; lunbonibus brevibus, 

 atro-violaseentibus, pallidiore biradiatis ; cardine angusto, tri- 

 dentato ; dentibus iniequalibus, divaricatis, postico longiore et 

 angustiore, dentibus lateralibus elongatis, angustis, subaequali- 

 bus, arcuatis, tenuissime striatis. 



Corbicula striatella. Desk. Proc. Zool. Soc. 1854. 



Hab. Pondieherry. Coll. Cuming. 



13. Corbicula trigona. 



C. testa trigoua, sequilaterali, com])ressiuscula, antiee paulo la- 

 tiore et obtusiore, utroque latere a-qualiter declivi, transversim 

 tcnue et regulariter striata; ejiidermide viridi, nitente induta, 

 intus pallide violaeea ; umbonibus minimis, brevibus, acutis ; 

 lunula ovata, angulo obsoleto circumscripta, iiallida, laevigata ; 

 cardine angusto, altero bidentato altero tridontato ; dentibus 

 lateralibus a^qualibus, tenuissime striatis, antico leviter arcuato. 



Corbieida trigona. Desk. Proc. Zool. Soc. 1854. 

 Hah. Pondicherrj'. Coll. Cuming. 



14 Corbicula Cashmiriensis. 



C. testa ovato-transversa, subtrigona, sequilaterali, tumidula, 

 transversim tenue et regulariter striata, striis postice evaues- 

 centibus ; epidermide nitida, atrb-vircscente, in latere postico 

 tenuissime striato vestita ; umbonibus tiuuidis, ])rominentibus, 

 })rofunde crosis. violaceis ; cardine angusto, in valva dextra bi- 

 dentato, in altera trideutato, valvula^ dextrac deute antico late- 

 rali adnato ; dentibus ])rimariis divergentibus, simplicibus, 

 lateralibus, longis, angustis, antico longiore cardine proximo ; 

 vah is intus violaceis, imjjressione pallii margine valdc remoto. 



Corbicula Casbmiriensis, Desk. Proc. Zool. Soc. 1854. 

 Hab. Cashmire. Coll. Cuming. 



