10 LAND AND PRESnWATER 



"In general form this shell is like J), pachyclmlas, Bs., a 

 Darjiling species, but the columellar tooth is never so large as in 

 that species." 



DiPLOMMATiNA NENGLOENSis, Goclwin-Austen. (Plate LXV. 

 figs. 3, 3 a.) 



Bijjlommatina nenglocnsis, G.-A. P. Z. S. 18;»2, p. 514. 



LocaliUj. Nenglo, North Cachar Hills (Godwin- Austen). 



Original description: — '^ Shell dextral, elongatcly fusiform, large, 

 solid ; sculpture very fine, moderately distant ribbing ; colour pale 

 ochraceous ; spire high, with flat sides, apex acuminate ; suture 

 shallow ; whorls 8|, sides flatly convex ; constriction some distance 

 behind the aperture, on side ; aperture widely ovate, expanded 

 towards the outer margin ; peristome double, not thickened ; 

 columellar margin subvertical, the tooth very small and remotely 

 situated, 



"Size : raaj. diam. 2-9 ; alt. axis 4*0 mm. 



" This is a very distinct shell ; in its very ovate aperture and 

 small columellar process or tooth it is unlike any other I have in 

 my collection." 



DiPLOMMATiNA DisTiNCTA, Godwin-Austcn. (Plate LXV. 

 figs. 4, 4ffl, 46.) 



Diphmmatina distincia, G.-A. P. Z. S. 1892, p. 514. 



Locality. North of Burrail Range, Naga Hills (Godwin- Austen). 



Original description: — " Shell dextral, small, rather depressedly 

 fusiform ; sculpture very fine clo^e ribbing ; colour pale horny ; 

 spire conoid ; apex blunt : suture impressed ; whorls 7, sides convex, 

 the antepenultimate the largest ; constriction on the side, well 

 behind the aperture ; aperture vertical, irregularly ovate ; peristome 

 thin ; columellar tooth very large for size and in front. 



"Size: maj. diam. 2*0; alt. axis 3*4 mm. 



" There is only one specimen of this species, but it is very different 

 from any of the smaller forms in having the constriction behind the 

 aperture, and, for so small a shell, in having the columellar tooth 

 so large."' 



Constriction on the side, behind the peristome ; last luhorls smooth. 



DiPLOMMATXNA KHUNHOENsis, Godwin-Austen. (Plate LXV. fig. 5.) 



Dipilommatina hhiinhoensis, G.-A. P. Z. S. 1892, p. 515. 



Locality. Khunho Peak and Trigonometrical Station, 8809 ft. 

 above the Mao villages, Naga Hills (in coll. H. H. G.-A.). 



Original description : — " Shell dextral, ovately fusiform, not rimate : 

 sculpture, fine regular constulation on the 3rd, 4th, and 5th whorls, 

 the two apical smooth, the last whorls polished and glassy ; colour 

 pale sienna ; spire, side flattened near the apex, which is somewhat 

 acuminate ; suture impressed ; whorls 8, the antepenultimate the 

 largest; constriction behind the aperture on the penultimate whorl ; 



