g36 PBOCEEDINGS OF THE NATIONAL MUSEUM. vol.xxii. 



Section PSEUDODON Gould, 1844. 

 (Type, Anodon Salwimana Gould.) 

 Characters given nuder generic name. 



(Group of Pseudodo7i harmandi.) 



Shell rather small, solid, rhomboid, short, inflated; posterior ridge 

 high, only slightly biangnlate, faintly corrugated, on the posterior 

 slope. 



t PSEUDODON HARMANDI Crosse and Fischer. 



* Pseudodon Ixarmandi Crosse aud Fischer, Jl. de Concli., XXIV, 1876, p. 331, pi. 



X, fig. 2. 

 ^ MonocondyUea harmandi P.etel, Conch. Sam., Ill, 1890, p. 174. 



Cambodia. 



PSEUDODON AUREUS Heude. 



Tseudodon aureus Heude, Concli. Flav. Nank., IX, 1885, pi. Lxxii, fig. 140. 



* Margaritana aurea P.etel, Couch. Sam., Ill, 1890, p. 172. 



China. 



(Group of Pseudodon vondemhuscliianvs.) 



Shell rather large, somewhat compressed, subsolid, elliptic-rhomboid, 

 wider behind, where it is widely biangnlate; teeth compressed. 



t PSEUDODON VONDEMBUSCHIANUS Lea. 



* Margaritana vondembiischiana Lea, Pr. Am. Phil. Soc, I, 1840, p. 288; ^Tr. Am. 



Phil. Soc, VIII, 1842, p. 222, pl. xviii, fig. 39; *Obs., Ill, 1842, p. 60, pi. 

 XVIII, fig. 39. — "KusTEK, Conch. Cab. Unio, 1862, p. 295, pl. xcviii, fig. 3. 



* Mar gar 0)1 (Monoco7idyUva) vondembiischiana Lea, Syn., 1852, p. 45; 1870, p. 73. 



* Monocondyla'a rondemhuschiana H. aud A. Adams, Gen. Eec. Moll., II, 1858, p. 



501.— "P-ETEL, Conch. Sam., Ill, 1890, p. 175. 

 * Fseudodon rondemhuschiana Conrad, Am. Jl. Conch., I, 1865, p. 233. 

 ^ Monodontina huschiana Conrad, Pr. Ac. X. Sci. Phila., VI, 1853, pp. 269, 449. 

 ^Unio von iuschea Sowerby, Conch. Icon., XVI, 1866, pl. li, fig. 269. 



* Alasmodonta crispaia MoussON, L. and Suss. W. Moll. Java, 1849, p. 97, pl. xviii, 



figs. 1, 2. 



* Margaritana crl^pata P.etel, Conch. Sam., Ill, 1890, p. 173. 



t "" Monocondyla'a pJanulata Lea, Pr. Ac. N. Sci. Phila., XI, 1859, p. 187; * Jl. Ac. N. 



Sci. Phila., IV, 1859, p. 262, pl. xlii, fig. 142; *Obs., VII, 1860, p. 80, pl. 



XLii, fig. 142.— *?KuSTER, Conch. Cab. Unio, 1862, p. 305, pl. c, fig. 8. 

 ^ Pseudodon pJanulata Conrad, Am. Jl. Conch., I, 1865, p. 233. 



* Microcondyla;a planulata P.etel, Couch. Sam., Ill, 1890, p. 175. 



* Mar gar on (MonocondyUea) planulata Lea, Syu., 1870, p. 73. 



"^ Margaritana fragilis Kuster, Conch. Cab. Unio, 1862, p. 295, pl. xcviii, fig. 2. 



* Microcondylceafragilis P.etel, Conch. Sam., Ill, 1890, p. 175. 



* Monocondylcea rhombica Kuster, Conch. Cab. Unio, 1862, p. 304, pl. c, fig. 7. 



Java; Sumatra; Borneo; Malacca. 



t PSEUDODON ELLIPTICUM Conrad. 



* Pseudodon ellipticum Conrad, Am. Jl. Conch., I, 1865, p. 352, pl. xxv, fig. 1. 



Cambodia. 



