iQog.] H. B. Preston : New land and marine shells. i^y 



12 — 13. Nassa shawi, sp. nov. 



Shell solid, ovate, yellowish brown ; spire acuminate • 

 whorls 6^, rapidly increasing in size, sculptured with transverse 

 costae and somewhat coarse, wavy, spiral grooves which become 

 obsolete at the periphery of the last whorl ; sutures crenulate ; 

 columella finely denticulate at base, curved and extending upwards 

 into a callus which reaches the lip above ; peristome varicosely 

 thickened behind, thin and serrated at the edge ; denticulate just 

 within the aperture ; aperture sub-ovate ; canal short. 



14. Pentadactylus ceylonicum , sp. nov. 



Shell fusiform, moderately solid, pale flesh colour ; whorls 6|, 

 sharply angled below the sutures, scabrous, sculptured with coarse 

 transverse varices and reddish brown tuberculous ridges, the 

 interstices occupied by spiral ridges of a finer character ; sutures 

 scarcely impressed, irregular ; columella straight, bearing three 

 very indistinct plaits towards the base and diffused into a callus 

 which joins the lip above ; outer lip serrated, bearing six plait-like 

 denticles which run some little distance into the mouth of the shell ; 

 aperture ovate ; canal rather broad, short, very .slightly curved. 



15. Leptopoma taprohanensis , sp. nov. 



Shell pyramidal, white, painted with broad reddish brown 

 flame markings; whorls 4I, convex, the apical whorls 

 uniformly reddish brown, smooth, the remainder sculptured 

 throughout with spiral lirae ; sutures deeply impressed ; base of 

 shell convex ; umbilicus moderately broad ; peristome continuous^ 

 single, reflexed, white ; aperture circular. 



Altitude . . . . 6-5 mm. 



Diam., major . . 6*25 ,, 



Aperture, alt. . , 2'5 ,, 



diam. .. 2-5 '„ 

 Habitat — Ceylon . 



The spiral lirse of this species readily separate it from any 

 other hitherto described form from Ceylon. 



