142 UNIONID^E. 



Original description: Testa rainuta, trans versim oblonga, 

 antice rotundata, postice latiore subrostrata, rugio radiantibus, 

 confertissirnis sculpta, sordida lutescente et virescente ; dente 

 cardinal!, valvae dextrae coinpresso triangular! ; valvae sinistrae 

 huraili, sub vertice appendiculato ; dentibus lateralibus >alvae 

 sinistrae geminis ; margarita ex luteo rubente. 



Height 156-5, length 273-5, diam. 91 mm. 



The species would seeni to be very doubtfully Indian. 



275. Nodularia (Nodularia) crispata (Gould). 



Nodularia (Nodularia) crispata (Gould) ; Simpson, Washington, 



D.C., Smiths. Inst., Nat. Mus. Proc. xxii, 1900, p. 835. 

 Unio crispata, Gould, Proc. Boston Soc. Nat. Hist. i,1843,p. 141 ; 



Otia Conch. 1862, p. 191. 

 Unio crispatus, Catlow & Reeve, Conch. Nom. 1845, p. 58; H. & 



T., C. I. 1876, p. 21, pi. 45, tig. 1. 

 Margaron ( Unto) crispatus, Lea, Syn. 1870, p. 32. 

 Unio scobinatus, Lea. Proc. Acad. Nat. 8ci. Philadelphia, viii, 



1856, p. 93 ; Obs. on Genus Unio, 1857, p. 19, pi. 26, tig. 13. 

 Margaron ( Unio) scobinatus, Lea, Syn. 1870, p. 32. 

 Unio mandarinus, Morelet, J. Conchyliol., Paris, xii, 1863, p. 159. 

 Unio pellis-lacerti, Morelet, J. Conchyliol., Paris, xiii, 1865, p. 22; 



Sowerby, Conch. Icon, xvi, 1868, pi. 86, fig. 457. 

 Unio venustus, Morelet, J. Conchyliol., Parib, xiv, 1866, p. 63. 

 Unio oblatus, Lea, Syn. 1870, p. 64. 



Original description : Testa ovali-elongata, inaequilaterali, antice 

 rotundata, postice subrostrata, costaque mnbonali ; umbonibus 

 parvis ; colore virescente, fusco variegata ; rugis angulatis 

 radiantibus undique crispata : intus livida ; dentibus parvis 

 obtusis. 



Long. 23, lat. 43, diam. 13 mm. 



Hal. Tavoy ; also Siain and Battambong, Cambodia (Indian 

 Museum Coll.). 



A very beautiful species easily recognizable by its curious 

 sculpture, consisting of dark green, nodulous, waved ridges run- 

 ning anteriorly in a horizontal, and posteriorly in a longitudinal 

 direction upon a ground of bright brownish-yellow. 



276. Nodularia (Nodularia) scobina (Hanley). 



Nodularia (Nodularia} scobina (Hanley) ; Simpson, AVashiugton 

 D.C., Smiths. Inst., Nat. Mus. Proc. xxii, 1900, p. 816. 



Unio scobina, Hanley, Rec. Biv. Shells p. 382, pi. 23, fig. 40 ; 

 Hanley & Theobald, Cat. L. & F. W. Shells Brit. Ind. p. 49 j 

 H. & t. C. I. pi. 46, fig. 2. 



Original description : [Shell] oblong, inequilateral, moderately 

 thick, rather compressed, with < dark green ray on the anterior 

 slope, densely covered with raised oorrugations, which, upon the 

 simple umbonal slope are disposed in somewhat transverse 

 divergent curved narrow folds, are angularly met beyond it by 

 similar raised wrinkles, are arranged upon the hinder extremity in 



