378 LAND AND FEESHWATER 



of A. otiphorus from the wooded slopes of the North Jaintia Hills. 

 This variety Avas figured and described by me in the J. A. S. li. 

 1871, p. 93, pi. V. fig. 6." After other remarks on A. granum I 

 concluded by saying : " The form of the Jaintia Hill shell is again 

 BO very distinct from that of the type-species (otijjhorus) that I 

 think it will be better to distinguish it as A. granum, var. major." 

 Compared with the minute A.gramiin,i\i.e shell is far larger and 

 more globose, while the umbilical region differs considerably. 



Alyc^.us nongtctngensis, n. sp. (Plate CXXX VIII. figs. 5, 5 a.) 

 No. 2692 B.M. Coll. Blf. Coll. No. 175.06.4.4, number in 

 llegister B.M. collection. 



Locality. Nongtung, Jaintia Hills (Godwin- Austen). 



Shell globosely and tumidly turbinate, closely umbilicated, 

 glassy lustre ; sculpture : the costulation is confined to a narrow 

 belt near the sutural tube, a slight indication of distant costulation 

 on the first whorl in front ; colour pale burnt sienna ; spire low, 

 conic, sides very slightly convex ; suture impressed, sutural tube 

 short ; whorls 4, well rounded, the last only slightly constricted, 

 and spreads forward from the sutural tube for a considerable 

 distance, with a smooth rounded surface ; aperture circular, a 

 slight angulation above ; peristome double, continuous, the iuner 

 expanded ; coliimellar margin rounded. 



Size : maj. diam. 2-8 ; alt. axis 1-2.5 mm. 



In the 'Journal of the Asiatic Society of Bengal,' 1871, vol. xl. 

 p. 89, I wrote under Alyca^us pusillus as follows : — " A. humilis is 

 common at Nongtung in the Jaintia Hills . . . ." The species was 

 finally considered a variety of the Pegu humilis, and I find this 

 confirmed by specimens so named in Blanford's collection which I 

 gave him. 



Closer examination on drawing the two forms shows considerable 

 variation in the higher spire and less circular aperture of true 

 JiHmilis, though both belong to this smooth, often shining section 

 without sculpture on the upper whorls. 



Alxcjeus obscueus, n. sp. (Plate CLIV. figs. 9, 9 a.) 



Locality. Cherra Poonjee (2 specimens in coll. John Ponsonby). 



Shell umbilicated, globosely conical ; sculpture, fine somewhat 

 distant costulation on the upper whorls, next the sutural tube 

 becoming much stronger and closer ; colour whitish ; spire conic, 

 sides flat, apex small ; suture impressed ; whorls 4^-, the last 

 sharply constricted close to the sutural tube, then swelling into a 

 sharply curving ridge and expanding forwards to the aperture, 

 about halfway a well-defined narrow ridge extends across the 

 whorl from side to side ; aperture oblique, widely ovate, expanding; 

 ])enstome double, the outer much exjtanded on the inner lower 

 margin, the inner shows crenulation extending backwards internally, 

 the two combined are vertical on the columellar margin. 



Size: maj. diam. 4 0; alt. axis 2'0 ram. 



