6 LAND AND FRESHWATER 



Lahupa Naga Hills, north of Munipur. Mr. Aldrich's collection 

 contains a large number, and I have selected the type out of these. 



" On the remarkable boss of intrusive trap rock near the village of 

 Phunggam I found a number of a small variety, 4-5 mm. in height 

 of 8])ire, but diftering in no respect, except in size, from the typical 

 species, only that they are all of a pale sea-green tint. 



" The same form occurred on Ivopamedza Peak, with this differ- 

 ence, that the constriction was more to the right, directly over the 

 margin of the peristome. From Prowi specimens were still smaller 

 in si/.e, only 3*8 mm. in height of spire." 



Constriction in front, above the luristome ; last ivJwrls smooth. 



DiPLOMMATiNA CHENNELLi, Godwin-Austcu. (Plate LXIV. 

 figs. 8, 8 a.) 



Dij)lommatina cJiennelli, G.-A. P. Z. S. 1892, p. 512. 



LocaJiti/. Lhota Naga Hills {ChenneU). 



Ori(jinal description : — " Shell dextral, of solid form ; sculpture, 

 very line, rather distinct ribbing, with scarcely any relief; colour 

 pale ochraceous and sienna-brown ; spire flat-sided, apex acuminate ; 

 suture rather shallow ; whorls 8| to 9, sides flatly convex, con- 

 striction in front, the last two whorls equal in size ; aperture oval, 

 vertical ; peristome thickened, strong ; the columellar margin vertical 

 and angulate below. 



" Size : (1st sp.) maj. diara. 2-9 ; alt. axis 5-9 mm. 



" Size : (2nd sp.) maj. diam. 2-9 ; alt. axis 5-0 mm. 



" This has close affinities to D. Jabiosa from the Khasi and Garo 

 Hills ; but, although far larger (nearly double), the columellar tooth 

 is much smaller, the spire more attenuate, and the general shape 

 differs. I name it after the late Mr. A. Chennell, an Assistant in 

 the Indian Survey Department." 



DiPLOMMATiNA BUTLERT, Godwin- Austcn. (Plate LXIV. fig. 9.) 



Diplommatina butleri, G.-A. P. Z. S. 1892, p. 512. 



Localitif. Laisen Peak, Munipur (Godwin- Austen). 



Original description: — '-Shell dextral, tumidly fusiform; sculpture, 

 none on the last 3 whorls, very distant, strong costulation on all 

 above ; colour pale sienna-brown, fresh shells glassy and polished ; 

 spire conic, rapidly diminishing, apex small ; suture well impressed ; 

 whorls 7|, penultimate and antepenultimate about equal, sides very 

 convex, constriction above the aperture ; aperture nearly circular, 

 vertical ; peristome double, strong, continuous ; columellar margin 

 vertical, angulate below, the tooth large, in front. 



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



" Six specimens were obtained, together with those of D. tiimida, 

 var., previously alluded to. This well-marked species was also 

 found by me at Prowa, in the Lahupa Naga Hills, at the head of the 

 Lanier lliver, which drains into the Kyengdwen of Burmah, and was 

 abundant there. I have also two specimens from Kezakenomih. 



