MOLLUSCA OF INDIA. 373 



ALTCiEus CEispATUs, G.-A., var. MINIMUS, G.-A. (Plate CXLVIII. 

 figs. 5, 5 a.) 1^0. 176 coll. W. Blf. (type figured). 



Locality. Habiang Garo Hills, West Khasi (Godtvin-Austen). 



Shell globosely pyramidal, umbilieated ; sculpture : distant 

 costulation on the upper whorls, close, regular, and larger on swell 

 of last whorl ; colour whitish ; spire conic, sides flat ; suture 

 impressed, the sutural tube moderately long ; whorls 4, the last 

 swollen next the sutural tube, then constricted and expanding 

 again into a well-defined ridge running diagonally forward and 

 spreading to the undulations of the peristome ; aperture circular ; 

 peristome double, thickened, crenulated, with strong notches and 

 four blunt processes which, on the outside, are represented by a 

 wavy outer lip. 



Size : maj. diam. 2*6 ; alt. axis V2 mm. 



This specimen was sent by me to Blanford soon after I had found 

 it. When cataloguing his collection I came on it again. Another 

 specimen (No. 9G1) is in my own collection. 



Altc^us ckispatus, Tar. rtwukensis. (Plate CLIV. figs. 3, 

 3 a.) (3 b another example.) No. 2637 P.M.* 



Localiti/. Eywuk Valley of the Garo Hills (Godivin-Austen). . 



Shell small, depressedly and globosely conical, well umbilieated ; 

 sculpture : strong, distant, and regular costulation above, close and 

 stronger next the sutural tube : colour whitish ; spire rather loAV, 

 apex blunt ; suture impressed, the sutural tube fairly long ; 

 whorls 3|, well rounded, the last is well constricted in front of 

 base of sutural tube, then rises into a low but defined diagonally 

 directed ridge and spreads forward, showing externally the shallow 

 crenation with a decided notch next the sutural side ; aperture 

 irregularly ovate, suboblique ; peristome double, crenulated on the 

 upper and outer margin, not so below, and the columellar side 

 rounded and suboblique : the crenulation is not deep, and the first 

 upper fold extends forward and is the most conspicuous (fig. 3 a). 

 Such is the description of the peristome of the type, but it is 

 evidently not at full development. In the second example four 

 well-defined notches and folds are seen, the lowest central and 

 basal (fig. 3 6). 



Size : maj. diam. 2*3 ; alt. axis 1"0 mm. 



This species is undoubtedly close to A. crispatus, and had been 

 put down by me some years ago as crispatus, small var., but, taken 

 with other varieties, it is something more than that when looked 

 at carefully under the microscope and mounted for drawing. A 

 number of Alycsei collected in many localities, more or less distant 

 from each other, group themselves near A. cmj)«iMs, and have been 

 regarded as varieties of that species. These varieties diff'er again 



* This is the number in the Eegister of species in the Godwin-Austen 

 Collection (British Museum) presented to the Trustees. 



