ALTC^EUS. 263 



391. Alycaeus obscurus, Godwin-Austen. 



Ahfcceus obscurus, Godwin-Austen, Laud k Freshw. Moll. India, 

 ii, 1914, p. 378, pi. 154, tigs. 9, 9 a. 



Original description: — "Shell umbilicaled, globosely conical; 

 sculpture, fine somewhat distant costuhition on the upper whorls, 

 next the sutural tube becoming much stronger and closer; colour 

 whitish ; spire conic, sides flat, apex small ; suture impressed ; 

 whorls 4|, the last sharply constricted close to the sutural tube, 

 then swelling into a sharply curving ridge and expanding forwards 

 to the aperture, about halfway a well-defined narrow ridge extends 

 across the whorl from side to side; aperture oblique, widely ovate, 

 expanding ; peristome double, the outer much expanded on the 

 inner lower margin, the inner shows crenulation extending 

 backwards internally, the two combined are vertical on the 

 eolumellar margin. 



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



Hah. India: Cherra Poonjee, Assam. 



" This was among some unnamed Alycsei from Cherra Poonjee 

 and Teria Grhat, kindly sent to me by Mr. John Ponsonby. I 

 have nothing like it in my own collection from those places and 

 I have reason to think the locality correct. It has several well- 

 marked characters." {Godivin-Austen.) 



392, Alycaeus ocliraceus, Godvnn- Austen. 



Alycceus ochraceiis, Godwin- Austen, Proc. Zool. Soc. 1893, p. 594 ; 



id.. Land & Freshw. Moll. India, ii, 1897, p. 3, pi. 63, figs. 7, 



7 a, 7 6; id., op. cit. ii, 1914, p. 411. 

 Alycaeus {Charax) ochraceus, Kobelt & Mollendorff, Xaciir. Deuts. 



Malak. Ges. xxx, 1898, p. 129 ; id., Cat. Pneum. 1899, p. 49. 

 Alycaeus [Dicharax) ochraceus, Kobelt, Das Tierreich, Lief. 16, 



1902, p. 374. 



Original description : — " Shell sub-depressedly turbinate ; sculp- 

 ture : rather strong ribbing on the swollen part of the last whorl, 

 on the apical whorls it is close and fine ; colour ochre ; spire 

 somewhat ftattened, apes blunt; suture deep ; whorls 4, the last 

 moderately swollen ; sharp constriction in front of sutural tube, 

 followed by a strong ridge which is contiguous to the crenulate 

 peristome ; aperture circular, suboblique ; peristome strongly 

 crenulated, double ; operculum horny, a large central excavated 

 circular space, surrounded by a pale ring, rising above to the 

 marginal portion. 



"Major diam. 4"5 ; alt. axis l"o mm.'' 



Hah. Burma: Ruby Mines District (Doherfij). 



"The nearest known species allied to this is A. crenatus, of the 

 Khasi Hills, but the ridge behind the aperture in this last lies 

 further back with a short interval; the peristome is not so 

 strongly crenulate. A. p>lectocheilus of Darjiling is a much smaller 

 form." {Godwin- Austen.) 



