1881.] Mollusca of tlie Lido-Malayan Fauna. 157 



round, with a more or less double peristome, which is boldly, though some- 

 what irregularly convex, the columellar margin is more distinctly double 

 and slightly angulate at base, all the margins are of a not very pronounced 

 shade of black. 



Type, anfr. 2\ ; alt. 8, diam. 6| mil. ; another, anfr. 3$, alt. 8, diam. 

 6 mil. 



Type, Indian Museum ; also in coll. Hungerford and Dohrn. 



S. Cruz, in Luzon, collected by Surgeon-Major E. Hungerford ; Prof, 

 von Martens has also, I believe, mentioned this species in the Mai. Bl. 1865. 



Btthinia sttbptjlchella, n. sp., PI. VI, Fig. 12. 



Narrowly rimate, conically ventricose, of rather thin substance, slightly 

 transparent, without sculpture, almost white, with a very slight brownish 

 tinge here and there, suture very distinct, spire elongately drawn out, apex 

 rather obtuse ; whorls 4£, convexly ventricose, the last one tumidly and 

 globosely swollen, about the same size as the others together, a distinct, 

 opaque varex on the left hand side (away from the aperture) on each of 

 the two last whorls; aperture nearly round, not oblique, with scarcely 

 thickened, convex peristome and columellar margin nearly straight, sub- 

 angulate at base. 



Very variable in size ; type, long. 6, diam. 4 mil. 



Abundant at Kutch, where there also occurs a " var. tenuior." 



Type, Indian Museum ; also in coll. Dohrn, Temple, Joly, Blanford &c. 



I have hesitated a long time as to separating this form from B. pul- 

 chella, Hutton. Even now, I am by no means sure it would not be better 

 classed as a " subspecies" of it. 



Bythinea evezardi, Blanford, PI. VI, Fig. 13. 



J. A. S. B., 1880, p. 220, Lanowlee, long. 3|, diam. 2 mil. 



This is a remarkable species of the genus, well distinguished by the 

 peculiar sculpture and umbilicus. The figure is taken from a specimen in 

 the Museum collected by the Rev. S. B. Fairbank and labelled " Maha- 

 baleshwar." 



Btthinea (?) turrita, Blanford, PI. VI, Fig. 15. 



P. Zool. S. 1869, p. 446, " Kyoukpong," long. 6£, diam. 3 mil., as " Fairbankia ? 

 (an Bithynia ?) turrita" 



As the animal and operculum are still unknown, the generic classifica- 

 tion of this well marked form is still open to question. The peristome is 

 not " sinuate" above, as in the genus Lartetia. 

 21 



