838 PROCEEDINGS OF THE NA TIOXJ L M USE UM. VOL. xxn. 



PSEUDODON THOMSONI Morlet. 



* Pseitdodon thomsoni MORLET, Jl. de Conch.. XXXII. 1884, p. 401, pi. xin, figs. 



2,2(i. 

 "* Margaritana thomsoni P.ETEL, Couch. Sam., Ill, 1890, p. 174. 



Cambodia. 



t PSEUDODON SALWENIANUS Gould. 



* Anodon ealireniana GOULD, Pr. Bost. Soc. N. Hist., I, 1844, p. 160. 



* Anodonta nalwcniana GOULD, Otia Conch., 1862, p. 193. 



* Pseudodon salwenwna COXRAD, Am. Jl. Couch., I, 1865, p. 233. 



* Monocondyla'u sahceniana P.ETEL, Conch. Sam., Ill, 1890, p. 174. 



* Unio salwenianus SOWERUY, Conch. Icon., XVI. , 1868, pi. xciv, fig. 513. 



* Margaron (Monocondyla'a) salweniana LEA, Syn., 1870, p. 72. 



* Pseudodon salwenianum HAXLKY and THEOBALD, Conch. Ind., 1876, p. 5, pi. ix, 



fig. 4. 



* Unio salwenian us P.ETEL, Conch. Sam., Ill, 1890, p. 166. 



River Salwen, British Burma. 



t PSEUDODON MORELETI Crosse and Fischer. 



* Monocondyla'a tumida DESHAYES and JULLIEX, Tsouv. Arch, de Mus., X, 1874, 



p. 117, pi. v, figs. 1-3. ' 

 *Pseudodon moreleti CROSSE and FISCHER, Jl. de Conch., XXV, 1876, p. 330. 



Cambodia. 



t PSEUDODON CAMBODJENSIS Petit. 







* Monocondt/lcea cambodjensis PETIT, Jl. de Conch., VI, 1865, p. 122. * P.ETEL, 



Conch. Sam., Ill, 1890, p. 174. 

 "Margaron (Monocondyla'a) cambodjensis LEA, Syn., 1870, p. 72. 



* Pseudodon cambodjensis COXRAD, Am. Jl. Conch., 1, 1865, p. 233. *>!ORLET, J. de 



Conch., XXXII, 1866, p. 266. 



Cambodia; Tonkin. 



PSEUDODON CHAPERI de Morgan. 



* Pseudodus chaperi DE MORGAX, Bull. Soc. Zool. de Fr., X, 1885, p. 423, pi. IX, 

 figs. 1, 2. 



Cambodia; Siam. 



The following species is unfigured: 



PSEUDODON NICOBARICUS Morch. 



Alasmodonta (subg. ?) nicobarica MORCH, Jl. de Conch., XX, 1872, p. 327. J 

 oSTicobar Islands. 



1 This fine, large shell which Deshayes and Jnllicn supposed to be /'. tumidus of 

 Morelet is quite a different thing, and Crosse and Fischer have given it a uew name. 



3 Morch describes the above under the name Alaxmodonta (subgeuus?) nicobarica, 

 and credits it to Fabricius. The Mytiltis nicobaricms of the latter was only a nomen 

 >i ad H m. Morch says his species is close to Anodonta zollinyeri. 



