214 CTREXID.E. 



which form the type series ; the dimensions of No. 4 are those 

 of the specimen figured by Hanley and Theobald in the Conch. 

 Ind. All four are now in the Bi-itish Museum. 



1. 



Long 32-25 



Lat 37 



Diam 10-25 



344. Corhicula trigona, Deshayes. 



Corbi'cula trigojia, Deshayes, P. Z. S. xxii, 1854, p. 344; Cat. 

 Brit. Mus., CoHchif. p. 224 ; Prime, Ann. Lyc. Nat. Hist. N.Y. 

 viii, 18GG, p. 221, fig. .^y ; Cat. Corb. 1869-70, Cen. Corbimhi, 

 no. 102; 11. & T., C. 1. 1876, p. 62, pi. 15o, fig. 7 ; Clessiu, in 

 Martini & Chemnitz, 1879, p. 203, no. 126. 



Original description: — Testa trigona, sequilaterali, compressi- 

 nscula, antice ])aiilo latiore et obtusiore, utroque latere sequaliter 

 declivi, transversim tenue et regulariter striata, epidermide viridi, 

 nitente induta, intus pallide violacea ; umbonibus minimis, 

 brevibus acutis ; lunula ovata, angulo obsoleto circumscripta, 

 pallida Isevigata ; cardine angusto, bidentato, altero tridentato ; 

 dentibus latei*alibus sequalibus, tenuissinie striatis, autico leviter 

 arcuato. 



Hah. Pondicherry. 



The dimensions gi^'en below are taken from three specimens in 

 the type series in the British Museum : — 



1. 2. 3. 



Long 11-25 10 10-75 mm. 



Lat 12-75 lL-75 12-25 ram. 



Diam 7 *3 7 mm. 



* Single vtilve. 



345. Corbicula striatella, Deshayes. 



Corbicula striatella, Deshayes, P. Z. S. xxii, 18/34, p. 344 ; Cat. 

 Brit. Mus., Conchif. p. 224 ; llanlev, Photog. Conch. ; Prime, 

 Ann. Lvc. Nat. Hist. N.Y. viii, 1864, p. 74, fig. 22; H. & T., 

 C. I. 1876, p. 55, pi. 138, figs. 7 & 10; Clessin, in Martini & 

 Chemnitz, 1879, p. 167, no. 58, pi. 29, figs. 19 & 20, pi. 30, 

 fig. 20. 



Coi-bicula violarea, Prime, op. cit. 1861, p. 28, teste Prime; 

 Proc. Acad. Nat. Sci. Philad. 1861, p. 128. 



Original description : — Testa ovato-transversa, depressiuscula, 

 subfequilaterali, extremitatibus sequaliter obtusa, transversim 

 regulariter lirata, liris ad latus posticum evanescentibus, epi- 

 dermide pallide virescente, nitida vestita, intus atro-violacea ; 

 umbonibus brevibus, atro-violascentibus, pallidiore biradiatia ; 



