CYRENA. 205 



327. Cyrena sinuosa, Deshayes. 



Cyrena zeylanica, Mousson, Moll. Java, 1849, p. 89, pi. 12. 



Cyrena sinuosa, Desh., P. Z. S. xxii, 1854, p. 18; Cat. Brit. Mus., 

 Conchif. 1854, p. 249; Prime, Cat. Corbiculidae, 1863, p. 6, 

 1869-1870, p. 147, no. 70; Sowerby, Con. Icon. 1878, pi. 7, 

 sp. 26 ; ? ? Clessin, in Martini & Chemnitz, 1879, r pp. 228-229, 

 pi. 45, fig. 1 



Original description : Testa ovato-rotundata, tumida, cordi- 

 formi, solida, valde inaequilaterali, epidernride fusco-fuliginosa, 

 transversim tenue lamellosa vestita ; latere antico brevi. rotundato, 

 postico subtruncato, latere supero-posticali sulco, profundo, 

 sinuoso, decurrente separate ; umbonibus tumidis, brevibus, 

 saepius erosis ; ligamento aiigusto, partim infosso ; valvis intus 

 albis ; cardine crasso, utroque latere tridentato, deutibus obliquis, 

 mediano et postico valvse dextrae bifidis ; dentibus lateralibus 

 brevibus, antico crasso, conico, apice acuto. 



Hob. Java. Ceylon, jide Sowerby. 



Type in the British Museum. 



The following dimensions are those of specimens in the 

 National Collection, nos. 1 and 2 being the type specimens from 

 Java and no. 3 a specimen labelled " China." 



1. 2. 3. 



Long 68 63 73 mm. 



Lat 71 68 78 mm. 



Diam 43 38 42mm. 



Clessin's figure in the Conch. Cab. 1879, pi. 45, fig. 1 is 

 certainly not that of Deshayes' species. 



328. Cyrena bengalensis, Lamarck. 



Cyrena bengalensis, Lamarck, Anim. sans Vert, v, 1818, p. 554 ; 

 Delessert, Recueil, 1841, pi. 7, figs. 6a-6 d; Prime, Cat. Corb., 

 vi, 1865 ; 1869-70, p. 142, Gen. Cyrena, no. 5; Sowerby, Conch. 

 Icon, xx, 1878, pi. 7, sp. 23 ; Clessin, in Martini & Chemnitz, 

 1879, pp. 107-108, pi. 13, figs. 1 & 2, pi. 17, tigs. 4 & 6. 



Venus bengalensis, Lister, Hist. An. pi. 345, fig. 182. 



Cyclas bengalensis, Ferussac, Cat. 1837, p. 20. 



Curena turgida, Lea, Philadelphia, Pa., Trans. Amer. Phil. Soc. 

 v, 1832, p. 109, pi. 18, fig. 51 ; Hanley, Descrip. Cat. 1844, p. 93, 

 pi. 14, fig. 50. 



Shell solid, tumid, thick, subtrigonal, blackish-brown, roughly 

 striated ; anterior side high, very short, sloped, full ; posterior 

 side produced, dorsal margin with a long slope, truncated at the 

 end, very slightly excavated in front of the angle. (Sowerby.) 



Hob. Bengal. 



