76 PALUDESTEINID.!:. 



151. Bithynia goniomphalos (Morelet). 



Bithynia yoniomphalos (Morelet), Rev. et Mag. Zool. 1866, p. 167 



(as Paludina) ; Ser. Conch, iii, pi. 13, tig. 4. 

 Bithynia irawadica, Blanford, P.' Z. S. 1869, p. 446 ; H. & T., C. I. 



pi. 37, fig. 10 (as Bythin/ia irawadica)', Nevill, in J. Anderson's 



Anat. & Zool. Researches during Yunnan Exp., Calcutta, 1878 



[1879], p. 890. 



Original description: Testa riraato-perforata, oblongo-conoidea, 

 solidula, sub lente subtilissime decussata, parum nitens, viridi- 

 f usca ; spira elongato-conica, apice truncata, anfr. superst. 4J 

 convexi, ultimas circa perforationem compresso-carinatus, spiram 

 non sequaus; apertura ovalis, basi angulata, intus lilacina. mar- 

 ginibus fusco anguste limbatis. Operculum testaceum, extus 

 concentrice lamelloso-striatum, intus candidum. 



Alt. 14, diam. 7 mm. 



Hob. Cochin China (Morelet) ; marshes and rivers round 

 Maridalay (Blanford). 



152. Bithynia evezardi, Blanford. 



Bithynia evezardi, Blanford, J. A. S. B. xlix, pt. 2, p. 220 ; Nevill, 

 op. cit. 1, pt. 2, p. 157, pi. 6, fig. 13. 



Original description : Shell narrowly umbilicate, ovately conical, 

 solid surrounded by regular spiral impressed lines rather close 

 together, whitish horny, covered with an olive epidermis. Spire 

 conical, apex eroded, suture deeply impressed. Whorls re- 

 maining 3 (in a perfect shell about 4 to 5), rounded, the last 

 about half the whole length, moderately ventricose, angulately 

 compressed at the base around the umbilicus, which is conical 

 and smooth inside. Aperture nearly vertical, oval, subangulate 

 in front at the base and at the posterior extremity ; peristome 

 simple, straight., obtuse ; operculum normal. 



Alt. 3-75, diam. maj. 3'25, diam. min. 2 mm. 



Aperture: alt. 2, diam. 1'5 mm. 



Hob. Lanowlee (Lanaoli), on the railway -line between Bombay 

 and Poona, a few miles east ot Khandalla at the top of the 

 B or- ghat. 



153. Bithynia pygmsea, Preston. 



Bithynia pygmcea, Preston, Rec. Ind. Mus., Calcutta; ii, p. 45, fig. 

 in text. 



Original description : Shell ovately fusiform, dark olive-brown ; 

 whorls 3g, convex, smooth; sutures well impressed; aperture 

 oval; peristome simple, continuous ; umbilicus narrow; operculum 

 shelly, spiral with central nucleus. 



Alt. 3*25, diam. maj. 2 mm. 



