392 LA>^D AND FRESHWATER 



uo costulatioii on tlie apical whorls, at the end of the sutural tube 

 very fine close costulation commences, and increases very little in 

 size forwards ; colour whitish grey, some with a pink tint on the 

 apex ; spire low, apex rounded ; suture moderately impressed, 

 the tube long ; whorls 4, the last swollen slightly, narrowly 

 constricted and swelling again towards the aperture ; aperture 

 oval horizontally ; peristome double, solid, inner sharply reflected, 

 forming a broad margin viewed on the side : operculum black, 

 smooth, spiral structure not seen in front, better seen at back, 

 which is highly polished and with a central nipple. 

 Size : maj. diam. 7"0 ; axis 2'5 mm. 



Altc.eus globtji.tjs, G.-A. (Plate CXLIV. figs. 4, 4o, ih.) 

 No. 2486 B.M. Coll. 



Godwin- Austen, J, A. S. B. vol, xliii. pt. 2 (1874), p. 147, pi. lii. 

 figs. 4, 4«, 4 6. 



Theobald, Cat. Supp. p. 39. 



G. Nevill, Hand-1. i. 1878, p. 291. 



Yon Mollendorff, Nachrbl. Deutsch. Malak. Ges. 1897, p. 150 : 

 Sec. Charax. 



Original description : — " Shell moderately umbilicated, globosely 

 turbinate, white, finely costulated on the shell of the first whorl, 

 becoming gradually smooth thence to the apex ; spire conoid, apex 

 flat, rounded ; whorls 4, flat, the last moderately swollen, then 

 sharply constricted and again enlarged by a ridge fiom which 

 emanate four minor longitudinal ridges on the expanded portion of 

 the peristome ; constriction narrow close to sutural tube, this is 

 moderate in length and about equal to the distance of its base to 

 lip ; aperture much expanded, oblique, round, angulate above, 

 waved on the outer margin and channelled within ; the outer lip 

 of peristome thin, slightly recurved on the inner lower margin. 

 Operculum black, multispiral, concave. 



"Major diam. 0-20", minor 0-16" ; alt. O'l". 



" Halntat. rhunggum, a Naga village at head of tlie Lanier 

 Yalley, at 5000 feet, wdiere it is abundant. 



" It is near the crispatus-iovm described in my last paper. Its 

 larger globose form, long sutural tube, and more open umbilicus 

 mark it as distinct." 



Altc^us inflattjs, G.-A. (Plate CXLIV. figs. 16, 1 c, 1 d.) 

 No. 2536 B.ll. Type. 



Godwin-Austen, J. A. S. B. 1874, xliii. pt. 2, p. 146, pi. iii. figs. 

 1-1 d. 



Original description : — " Shell depressedly turbinate, solid, pale 

 ochreous horny, moderately umbilicated, smooth, jf?neZ?/ scidptured 

 on the swollen portion of the last ivhorl adjacent to the sutural tube. 

 Spire conoid, apex blunt; suture impressed; whorls 4^, the last 

 very much swollen for the size of the shell ; constriction smooth, 



