518 LIEUT.-COL. H. H. GODWIN- AUSTEN ON NEW [June 14, 



Small species, with very minute or no columellar process or tooth. 

 These should eventually be brought into a subgenus of their own. 



DlPLOMMATINA MUNIPURENSIS, D. Sp. 



Loc. South of the Barak River, between the Mao villages and 

 Munipur {Godwin-Austen). 



Shell dextral, elongately fusiform ; sculpture minute, close costu- 

 lation ; colour very pale greenish grey ; spire symmetrical, sides 

 slightly convex ; suture well impressed ; whorls 6|, sides convex ; 

 constriction in front and immediately above the aperture ; no colu- 

 mellar tooth, its position indicated by a slight sinuosity on the 

 columellar margin ; aperture nearly circular, subvertical ; peristome 

 closely double, very slight in form, the inner does not spread much 

 upward on the penultimate whorl. 



Size: maj. diam. 1*5; alt. axis 2'7 millim. 



From the number of specimens found, this appears a very abundant 

 species ; I never got anything like it in the Khasi Hills to the west. 



DlPLOMMATINA VENUSTULA, n. Sp. 



Loc. Japvo Peak, Anghami Naga Hills {Godwin-Austen). 



Shell dextral, elongately fusiform, thin ; sculpture, fine, regular, 

 close costulation throughout ; colour pale amber ; spire high, sides 

 flattish, apex acuminate ; suture impressed ; whorls 7^, sides 

 convex, the penultimate the largest ; constriction in front above the 

 aperture ; aperture widely ovate, suboblique ; peristome but slightly 

 developed, narrowly double, expanded into a small wing on the 

 upper and outer margin, giving it a very sinuated margin ; no 

 columellar tooth. 



Size: maj. diam. 2*1 ; alt. axis 4*0 millim. 



This species, of which I only obtained 3 specimens, is quite distinct, 

 as shown in the form of the spire and particularly the expanded side 

 of the peristome, which is an unusual character. 



DlPLOMMATINA DOMUNCULA, U. Sp. 



Loc. Margarita, Naga Hills {W. Boherty, in coll. T. H. Aldrich). 



Shell dextral, fusiform ; sculpture, strong, regular, distant costu- 

 lation on all the whorls, much closer near the constriction, first two 

 whorls smooth ; colour pale whitish with an ochraceous tint ; spire 

 with convex sides, apex blunt ; suture well impressed ; whorls 7|, 

 sides convex, antepenultimate the largest, last whorl does not rise 

 upon the penultimate ; constriction above the aperture ; aperture 

 circular, subvertical, curvilinear as seen from the side ; peristome 

 double, not very much thickened ; columellar tooth very minute, 

 internal. 



Size : maj. diam. 1"3 ; alt. axis 3*0 millim. 



This is a very distinct form, quite new to me, and belonging to a 

 group which is not represented, so far as I know, in the Khasi and 

 Jaintia Hills. 



