SYKES: DESCRIPTION OF SIX NEW LAND SHELLS. 23 



suture well marked ; last whorl very slightly narrower than the 

 preceding one. Mouth ovate-pyriform, chestnut within, the peristome 

 being solute, thickened and reflexed. Parietal lamella nearly vertical 

 and reaching to the lip, columellar lamella moderately deeply seated, 

 twisted, and ascending fairly rapidly ; plica principalis medium in size, 

 with two small palatal plicae (upper one the largest) below. 



Alt. 31.8; diam. max. 5 millim. ; alt. apert. 6.5, lat. apert. 4.8 

 millim. 



Hah. — Kelantan, Malay Peninsula. 



Related to C. Jiliroiffaia, Stol., and C. /<ajjaya7ie?it<ii<, de Morgan ; 

 from the latter it may readily be separated by its size, and from the 

 former, in addition to the characters of the plicae and lamellae, the 

 much larger protoconch will readily separate it. The specimens were 

 collected with C. filkodata. 



Platyrhaphe chrysalis, n. ?p. 

 Shell moderately depressed, with 4-i \\ horls, largeh' and openly 

 umbilicated, horny brown in colour, but incrusted all over with a 

 yellowish covering, which nearly fills the umbilical area. The suture 

 is very deep, the whorls being strongly convex, and the protoconch 

 acute. The aperture is round, thickened within, and not reflected. 

 Compared with P. loiri, de Morgan, the species differs in the greater 

 diameter of the mouth in proportion to the width of the shell, and the 

 last whorl is not solute. Judging from de Morgan's figure, the present 

 shell is also not so widely umbilicated. 



Alt. 9; diam. max. 4.5 ; diam. apert. 2i-^ millim. 



Hah. — Kelantan, Malay Peninsula. 



Opisthopopus dautzenbef^i, n. sp. 



Shell much depressed, whitish, irregularly dotted and streaked 

 with reddish brown ; whorls 4^, protoconch smooth, the residue of the 

 shell being closely and regularly striate, umbilicus large and open, suture 

 deep. The last whorl descends in front ; the lip is double, the edge 

 of the incrassated portion being dark brown, while the reflected 

 portion is white. The operculum is solid, many-whorled, white 

 outside and horn-colour within. The tube is narrow, situated about 2 

 millim. from the outer lip, and bends backwards. 



Alt. 5 ; diam. max. 13, min. 10.5 millim. 



Hah. — Kelantan, Malay Peninsula. 



Related to U. i>enan<jensis, Stol., of which I have specimens from 

 Kinta Valley, and which I suspect will prove to equal O. rostellatu!^, 

 Pfr., but the present species is larger, more solid, differs in ground 

 colour, also the pattern of the colour marking is not carried all over 

 the shell, and the lip is larger and more reflected. 



