BY THE REV. J. E. TENISON-WOODS. 1071 



29. Opisthostoma, Crosse and Nevill, Jour, de Conch. XXVII. 



1879, pp. 197, 205, 339. 



Shell -with the upper whorls obliquely deflected ; last whorl 

 constricted, thin, inflated, finally sinistrally ascending close to 

 the upper whorls ; aperture reversed, almost vertical, rounded ; 

 peristome continuous and duplicated ; operculum normal. Habitat 

 the same as the last genus. Scarcely a dozen species. 



Opisthostoma paulucci^, Crosse and Nevill, Jour, de Conch. 

 XXVII, 1879, pp. 197, 205, 339, pi. 8, fig. 1; Godwin-Aust. and 

 G. Nev. Proc. Zool. Soc. 1879, p. 738, pi. 9, figs. 2, 2a, 26 ; von 

 Moll. Jour. As. Soc. Beng. LV. 1886, p. 313. 



Bukit Pondok. 



O. PERAKENSE, Godwin-Aust. and G. Nev. I.e. p. 738, pi. 60, 

 figs. 1, la, \h ; von Moll. I.e. p. 313. 

 Bukit Pondok. 



O. CRESPiGNYi (Plectostoma), H. Adanis (Coll. \.) = Plectostoma 

 De Crespignii, H. Adams, Ann. and Mag. Nat. Hist. 3rd ser. 

 XV. p. 177 (Pfr. Mon Hel. V. p. 4:37)= Opisthostoma deerepignyi, 

 Paetel, Catal. p. 119= 0. crespignyi, Pfr, Mon. Pneumon. Suppl. 

 III. p. 68. 



Labuan, Borneo. 



Family PUPIXIN^, Pfr. 



30. Pupina, Vignard, Ann. Sc. Nat. Vol. XVIII. 1829, p. 440. 



Shell sub-cylindric like Pupa, thin, transparent, smooth, very 

 shining ; mouth not quite round ; the columella margin with a 

 deep notch anteriorly and a tooth posteriorly ; peristome simple ; 

 operculum in all the family orbicular, thin, horny, with numerous 

 gradually increasing whorls from a central nucleus. 



Pupina artata, Bens. ; von Moll. Jour. As. Soc. Beng. LV, 

 1886, p. 314. 



Perak. 



68 



