274 CYCLOPHOllTD^. 



about 36, mucli closer together ; colour pale ochraceous ; spire 

 low ; suture impressed ; whorls 4, rounded, constriction sharp, 

 swelling slightly to the aperture, the distance being greater than 

 in A. iheobaJdi; aperture nearly circular, angulate above, and 

 much expanded ; peristome double, inner continuous, outer much 

 expanded but not reflected. 



" Major diam. 3-5 ; alt. axis 1-6 mm." 



Rab. India: Ga.ro HiWs (Godivin-Austen). 



" Five of this pretty form are in the collection ; although very 

 close to A. theohaldi, it is easily distinguishable in its size, general 

 form, and sculpture." (Godtviii- Austen.) 



Var. diyungensis, Godwin-Austen. 



AlyccBUS theohaldi, var. diyungensis, Godwin-Austen, Land & 

 Freshw. Moll. ludia, ii, 1914, p. 401, pi. 138, tig. 4. 



Original description : — " Shell well umbilicated, depressedlv tur- 

 binate ; sculpture : rather strong, regular, close costulation 

 extending just beyond the end of the suture, the rest of tlie shell 

 smooth, finely striate, with very distant costulation ; colour 

 ochraceous, some with a green tint ; spire conic, depressed ; suture 

 well impressed, the tube moderately long ; whorls 4, rounded ; 

 apertui-e circular, slightly angulate above ; peristome double, the 

 outer, viewed from above, rather expanded ; columellar margin 

 rounded. 



" Major diam. 4-2 ; alt. axis 2 mm." 



Hah. Diyung Valley, north of Asalu, jST. Cachar {Godwin- Austen). 



" This i)iyu.ug Valley species is a departure from A. theobaldi 

 of the Khasi Hills in having the apex less high and conical, the 

 suture more impressed, the shell more openly umbilicated ; costu- 

 lation next suture stronger." (Godwin- Austen.) 



408. Alycseus torupiituensis, Godivin-Aiisten. 



Alycaus theobaldi, var., Godwin- Austen, J. A. S. B. xlv, part 2, 



1876, p. 175, pi. 7, fig. 10 (operculum) ; Nevill, Hand List, i, 



1878, p. 290, no. 4. 



Ah/cmis to7-uputuensis, Godwin-Austen, Land & Freshw. Moll. 



India, ii, 1914, p. 359, pi. 149, figs. 3, 3 a, 3b: p. 351, pi. 145, 



tig. 10 (operculum). 



Oriqinal description: — "Is of the same form as A. theobaldi 



from Cherra Poonjee and the Garo Hills, only that while the 



operculum in the latter is exceedingly closely wound, quite smooth 



in front, and black (and I have examined some dozens of shells), 



in the former the concentric whorls are wider apart, have a 



central circular hollow space, and are white. The ribbing of the 



swollen portion in the Dafla shell is exceedingly fine, and this, I 



note, is a common character, holding good almost without exception, 



of all the species in the Dafla Hills." (Godwin- Austen, 1S76.) 



" There is also a striking difierence in the contraction of the 

 whorl near the umbilicus." (Godioin- Austen, lOM.") 



If ah. India: slopes of Toruputu Peak, Dafla Hills (Godwin- 

 Austen). 



