MOLLITSCA OF INDIA. 393 



very sliort ; siitiiral tube morlerate ; aperture oblique, circular ; 

 peristome double, solid, united, and reflected ; operculum concave, 

 black, its position far forward at the very edge of the aperture. 



" Maj. diam. 4'5 ; alt. axis 2'2 mm. 



" Habitat. I first noticed this shell in the collection of Mr. F. 

 Stoliczka, who kindly allowed me to take it for figuring ; it had 

 been found in Assam, but its exact locality was unknown. In the 

 winter of 1872-73 I was fortunate to find it myself in the Naga 

 Hills under Japvo Peak and again at Yemi, Phiinggum, and 

 GazAphimi at the head of the Lanier River on the main water-shed. 



" This shell in many respects assimilates to A. conicus, mihi, but 

 is more openly umbilicated ; in another direction it has the cha- 

 racter of the subgenus Diori/x, viz. in form of mouth, the short 

 constriction, and position of operculum close to the edge of the 

 aperture." 



I got inflatm, IS'o. 2537 B.M., from the head of the Lauier 

 lliver, Lahupa IS^aga Hills. 



The three forms above mentioned on closer examination are 

 easily distinguished one from the other. The original description 

 is of the Japvo Peak species, true in/iatus, pi. iii. tigs, i b, 1 c, 1 d ; 

 figs. 1, 1 a, is Stoliczka's Assam (No. 9G9. 06.1.1 B.M.) ; this must 

 be considered a variety, the costulation on the swollen portion of the 

 whorl being much stronger and distance from the aperture much 

 greater. The Ghaziphimi, N.E. Munipur, species I separate from 

 inflatus as A. subinflatus No. 2489 E.M,, the difierences being 

 describable. 



Altc^its INFLAT0S, G.-A., var. (Plate CXLIV. figs. 1, 1 a.) 

 Assam. 



Altc^us kezamaensis, n. sp. (Plate CXLIX. fig. 1.) 



Locality. Kezama, Anghami-Naga Hills, No. 2556 B.M. Coll. 

 (^Godwin- Austbii). 



Shell globosely conoid, umbilicated ; sculpture distant, very 

 regular costulation, at sutural tube fine and very close ; colour 

 dark ochraceous ; spire conoid with flat sides ; suture slightly 

 impressed ; whorls 4, not very rounded, the last viewed from above 

 expanding slightly forwards, constriction close to base of sutural 

 tube, then swelling slightly between it and the peristome ; aperture 

 semiovate, angulate near suture ; peristome double, somewhat 

 thickened and sinuate above. 



Size: maj. diam. 2-9; alt. axis 10 mm. 



A very small species with no very salient characters allied to 

 asaluensis. A smaller shell, more globose, and diff'ers in the form 

 of the aperture. 



Altcjetjs khasiacus, G.-A., No. 2651 B.M. ColL 



This was obtained at Asalu, and agrees with Khasi Hill specimens. 



