Mr. W. H. Benson on new Helicidse. 271 



ad periompbalum excavato ; apertura obliqua, transverse lunata, 

 peristomate tenui, acuto, margine basali arcuato, columellari bre- 

 viter expanse. 



Diam. major vix 9, minor 8, axis 4 mill. 



Habitat ad Darjiling, rarissime. 



Allied to tbe Tenasserim H. Petasus, B., but diflPering in its 

 inferior lustre, irregular rugose sculpture, thinness, absence of 

 labiation, and of margination at the suture. Mr. W. T. Blanford 

 appears to have seen only the single specimen here described, 

 and which, although taken in a dead state, is in fair condition. 



13. Vitrina planospirttj nobis, n. s. 



Testa suborbiculato-depressa, peripheria rotundato-ovata, tenui, lae- 

 vigata, obsolete arcuato-striatula, translucente, polita, cornea; 

 spira convexiuscula, superne planata, sutura canaliculato-margi- 

 nata ; anfractibus 3, celeriter accrescentibus, ultimo antice depresso, 

 leviter descendente, ad peripheriam compresse rotundato, subtus 

 coDvexiusculo ; apertura valde obliqua, ovato ?-lunari, peristomate 

 tenui, superne antrorsum arcuato, margine columellari valde arcuato. 



Diam. major 14, minor 11, axis 5 mill. 



Habitat ad Pankabari et in valle Rungun, Fitrince Salii consors, 

 raro occurrens. 



Only two dead and imperfect specimens were collected by Mr. 

 W. T. Blanford. The species is remarkable for the sudden flat- 

 ness of the upper part of the spire, and for the neat shallow 

 canaliculate suture. It was found in company with a variety of 

 the smaller and more convex Vitrina Saliits, B., which Mr. Theo- 

 bald had previously taken alive on the Khasia Hills. 



Helio! radicicola, B. 



Var. major, solidiuscula, fasciis duabus castaneis ornata, superior! 



mediocri, prope suturam, inferiori lata, infra peripheriam ; aper- 



turse margine dextro magis expanso. 

 Diam. major 16, minor 14, axis 13, long. 16 mill. ; apert. intus 



long. 9, lat. 8 mill. 



I have sought in vain for sufficient characters to separate this 

 fine variety from the shell which I got at Landour, in a ravine 

 not far to the eastward of the locality of H. Rimicola, and on 

 the back of the same ridge. My best specimen, figured in 

 Reeve's 'Iconica,' pi. 125. f. 753, was mislaid when I described 

 the shell in the ^Annals' for Sept. 1848; and the expansion of 

 the peristome at the base and right side was consequently 

 omitted in that description. The greater size and solidity, and 

 the coloured bands, of the Darjiling shell, are insufficient to 

 constitute a species in the absence of a difi'erence in form and 

 sculpture. On a close examination of the Landour shell under 



