DESCRIPTIONS OF TWO NEW SPECIES OF 

 DIPLOMMATINA FROM CEYLON. 



By H. H. PRESTON', F.Z.S. 

 (Plate ii, figs. 30, 40). 



Diplommatina (Nieida) lankaensis, n. sp. 



PI ii, fig. 39. 



Shell dextral, pyramidal, somewhat transparent, pale horn colour ; whorls 8, 

 rather coarsely spirally striate throughout, the penultimate whorl being 

 narrower than the antepenultimate ; suture impressed ; umbilicus broad ; 

 peristome continuous, slightly reflexed, reddish -brown, irregular; aperture 

 subcircular. 



Alt 3 millim. ; diam maj. 2. Aperture, alt. i millim. ; diam. .75 



Hal). — Kinidun, Ceylon. 



Diplommatina (Nieida) deleetabilis, n. sp. 



PI. ii, fig. 41. 

 Shell dexlral, sub-o\ate, pale horn colour: whorls 7, veiy finely spirally striate, 

 the antepenultimate whorl much inflated, the bod}' whorl ascending gradually 

 so as to finall) cover the penultimate whorl just behind the peristome ; suture 

 impressed ; umbilicus narrow ; peristome continuous, thick, reflexed, reddish- 

 brown, very irregular and projecting above at the point where it overlaps the 

 penultimate whorl : aperture subcircular ; columella straight. 



Alt. 2 millim. ; diam. maj. 1.25. Aperture, alt. .5 milliuK 



Hah. — Kinidun, Ceylon. 



