226 BIVALVE SHELLS. 



Cyrena Largillierti, Phil. Ahhild. Conch. pl. 1. f. 1. 

 Menke, Zeits.fiir Malak. 1844, p. 163. 



Hab. China. 



19. CORBICULA RECURVATA. 



C. testa trigona, brevi, alta, crassa, cordiformi, aeqiiilaterali ; late- 

 ribus subajqualibus, fere rectilineis, latere antico obtuso, postico 

 angulato, margine inferiore vix arcuato ; umbonibus angustis, 

 prominentibus, oppositis, sa^pius erosis ; facies externa regula- 

 riter transversim sulcata, epidermide flavescente fusco zonato ; 

 valvis intus albis ; cardine bidentato, dentibus lateralibus rectis, 

 longissimis, simplicibus. 



Cyrena recurvata, Eydoux, Moll. du Voy. de la Favorite, Mag. 

 deZool.^. ll.pl. 119. f. 2. 

 Hah. In fluviis Chinae, atque lacu et rivulis prope Manillam. 



20. CORBICULA FLUMINEA. B.M. 



C. testa triangulari, gibba, opaca, antice et postice versus cai*di- 

 nem fere sequalis, epidermide viridi vestita, costis latis, trans- 

 versim quasi circulis doliaribus circumdata intus albida, semi- 

 circulo nigro notata ; dentibus cardinalibus et fossulis uti in 

 prsecedente (fluviatilis, Muller). 

 Tellina fluminea, Mull. Verm. ii. 206. 



Gmel. p. 3243. no. 80. 

 Cyclas fluminea, Blainv. D. S. N. xii. 280. 

 Venus fluminea, Chemn, Conch. vi. 320. pl. 30. f. 322, 323, an 

 eadem species ? 



Schrot. Einl. iii. 159. no. 13. 

 Wood, Ind. Test. pl. 8. f. 114. 

 TeUina fluviatihs, Schrbt. Flussconch. p. 193. pl. 4. f. 2. a, b. 

 Cyrena fluminea, Lamk. An. s. Vert. v. 553. no. 5. 

 Hanley, Descr. Cat. p. 92. 



Phil. Abbild. Conch. p. 2. no. 3. pl. 1. f. 3, an eadem species? 

 Mousson, Moll. de Java, p. 87- no. 2. pl. 15. f. 3. 

 Hah. In arena fluviatili Chinse {Milller) ; Java (Mousson) ; 

 Manilla {Cuming). 



21. CORBICULA FLUVIATILIS. B.M. 



C. testa triangulari, transversim rugosa; testa latior et tenuior, 

 proxima prsecedenti (fluminalis), fusco-virens, in cardine an- 

 tice et postice a^qualis latitudiuis; lineis elevatis cincta {Miill.). 



Tellina fluviatilis, Milll. Hist. Verm. ii. 206. 

 GweZ. p. 3243. no. 81. 



Cyclas fluviatilis, Blainv. D. S. N. xii. 280. 



