218 CTREXIDJE. 



354. Corbicula "bensoni. 



Corbicula bensoni, Deshayes, P. Z. S. xxii, 1854, p. 345 ; Cat. Brit. 



Mus., Vener. p. 224. 

 Corbicula bensonii, Desh., Prime, Cat. Corb. 18C9-70 ; Gen. Corbicula, 



p. 128, no. 11. 

 Corbicula bensoni, If. & T., C. I. 1876, p. 65, pi. 138, figs. 1,4; 



Clessin. in Martini & Chemnitz, 1879, p. 198, no. 111. 



Original description ; Testa ovato-transversa, subtrigona, aequi- 

 laterali, laevigata, nitida, depressiuscula, extremitatibus, obtusa, 

 utroque latere sequaliter declivi, epidermide tenui, nitente, vires- 

 cente vel flavescente induta, aliquantisper lineis interruptis,fuscis 

 radiata, intus alba, vel pallide violascente ; cardine angusto, tri- 

 dentato, dentibus insequalibus valde divaricatis, dentibus lateralibus 

 prselongis, angustissimis, tenuissime striato-crenatis, antico paullo 

 longiore. 



Hob. Bengal ; also recorded from the River Jumna. 



The dimensions given below are taken as follows : No. 1 from 

 the single valve representing the type, and Nos. 2 and 3 from two 

 other specimens in the British Museum : 



1. 2. 3. 



Long ....... 7-5 7 7 mm. 



Lat ......... 9-25 9-5 9-25 mm. 



Diam ....... *2 4-25 *2 mm. 



* Single valves. 



355. Corbicula consanguinea, Prime. 



Corbicula consanguinea, Prime, Ann. Lye. Nat. Hist. N.Y. viii, 

 1867, p. 417; Cat. Corb. 1869-70, p.' 129, no. 22; Clessin, in 

 Martini & Chemnitz, 1879, p. 199. 



Original description : Testa ovato-transversa, compressiuscula, 

 sequilaterali ; epidermide viriclescente, nitente vestita ; regular! ter 

 striata ; umbonibus brevibus, atro-violascentibus ; valvis intus 

 violaceis ; cardine lato. 



Long. 14, lat. 16, diam. 9 mm. 



Hob. India. 



The type is inaccessible to the compiler of the present volume ; 

 the author, however, states that though closely allied to C. stria- 

 tella.) Deshayes, the lateral teeth are stronger and much broader 

 in the present species. 



356. Corbicula sylhetica, Preston. 



Corbicula sylhetica, Preston, Eec. Ind. Mus. Calcutta, ii, 1908, 

 pp. 47-48 (fig. in text). 



Original description: Shell nearly equilateral, tumid, sub- 

 trigonal, pale olive-green, sculptured with fine irregular concentric 



