ALYCiEUS. 285 



apex blunt, suture impressed ; whorls 4^, the constriction slight, 



nearly straight up to the reflected peristome and slightly rising ; 



aperture cii'cular ; peristome simple, strong, double, outer \\ell 



reflected; opei'culum smooth, pale horny. 

 " Major diam. 2*9 ; alt. axis 2-9 mm." 

 Hah. India : Eechila Peak, Western Bhutan {Rohert). 

 " This is quite distinct fi'om A. hemhex, which I at first thought 



it to be, but the umbilical region differs much." {Godicin- Austen.) 



42S. Alycaeus tenellus, Gochvin- Austen. 



Ah/cccus {Cychnij.v) tenellus, Godwin-Austen, Land & Freshw. 

 Moll. India, ii, 1914, p. 417, pi. 155, figs. 3, 4, 4 a. 



Original descriiytion : — " Shell scarcely perforate, elongately 

 conoid ; sculpture : none visible on upper whorls, very fine and 

 indistinct near the very short sutural tube ; colour bleached ; 

 spire high, apex small ; suture impressed ; whorls 4:^, sides 

 rounded, nearly flat on side, constriction slight close up to the 

 sutural tube, thence short and flat to the aperture ; aperture 

 circular, vertical ; peristome double, the inner well reflected 

 below, slightly flattened on the upper outer margin. 



" Major diam. 2*9 ; alt. axis 2-4 mm." {Godwin-Aiisten.) 



Hah. Burma : Shan States {Fedden). 



429. AlycsBus thompsoni, Godwin- Austen. 



Alycceus (Ci/clory.v) tlionipsoni, Godwin-Austen, Land tS: Fresliw 

 Moll. India, ii', 1914, p. 404, pi. 146, figs. 3, 3 a. 



Original descrijHion : — " Shell ovately globose, umbilicus con- 

 cealed; sculpture: flue, regular, close costulations, six on the length 

 of the sutural tube, about seven between it aud the peristome 

 indistinct ; colour whitish ; spire rather high, apex rather blunt ; 

 suture moderately impressed; whorls 44, sides convex ; aperture 

 circular, with a flange close to the umbilicus and completelv 

 covering it; peristome double, thickened, continuous. 



" Major diam, '6-8 ; alt. axis 2-.5 mm." {Godwin-Austen.) 



Hah. Burma: lsi.\\m\)\\r {Godtcin-Austea). 



Subgenus RAPTOMPHALUS, Godiv in- Austen. 



Raptomphalus^ Godwin-^Vusten, Land & Freshw. Moll. India, ii 

 1914, p. 306. 



Type (first species), Abjcteus magnificus, Godwin-Austen. 



Itange. India, Burma. 



" Shell globosely conoid, widely umbilicated. The margin of the 

 umbilicus is a well-developed keel, which conunences near the 

 constriction. The peristome is strongly and irregularly crenulated, 

 showing well behind the aperture viewed from the side, between 

 this and the sharp constriction a well raised ridge crosses the 

 whorl transversely." 



