182 Godwin- Austen — On the Operculated Landshelh [No. 3, 



some from Southern India; but it is interesting and important to note 

 that as regards the operculum there is a distinct departure, the former 

 having this appendage very similar to some Alyccei of the same province. 

 I, however, consider them nearer to Cyatlwpoma than to any other genus, 

 and it is not desirable to separate them until something more is known 

 of the animals. 



1. Cyathopoma Jawaiensis, n. sp., Plate VIII, A, Fig. 6. 



Shell narrowly umbilicated, turbinate, covered with a dark umber epi- 

 dermis. "Whorls 4r|, well rounded, with four well raised longitudinal ribs 

 on the last, three shewing on the whorls above. Spire conical, apex 

 papillate. Peristome simple, lip thin ; aperture circular, the lirate ribbing 

 extending up to the peristome so as to give it on the exterior margin an 

 angular outline. Operculum, pure white, situated close to the margin of 

 the aperture, deeply concave in front, many whorled, with a small dark spot 

 in the centre. 



Alt. 0-07, major diam. 006 in. 



The animal has long pointed pale tentacles, with the eyes on the upper 

 outer basal margin (fig. 6 c having been drawn from a dead specimen, the 

 tentacles are represented in a contracted condition). The labial ribbon 

 (fig. 6 li) is very similar to that of JHplommatma, all the teeth being five- 

 cuspid in the usual arrangement 3 — 1 — 3, with the central rather broad. 



Hab. — This little shell is very abundant in the woods close to Jawai 

 among dead leaves, and I found the first specimen close under the Dak 

 bungalow at that place. The very white operculum with the dark central 

 spot contrasting with the dark colour of the shell is a very conspicuous 

 character. 



In the Naga Hills I afterwards obtained a slightly larger form to 

 which the above description would apply, only that the operculum is not so 

 deeply concave and is situated well within the aperture, whereas in several 

 dozen specimens of Jawaiensis examined the position of the operculum is 

 external. 



2. Ctathopoma Neyilli, n. sp., Plate VIII, A, Fig. 5. 



Shell elongately turbinate, very closely umbilicated, covered with an 

 olivaceous epidermis. Whorls 5-|, rounded, with four well marked spiral ribs 

 and one basal near the umbilicus. Apex blunt. Aperture rounded, peris- 

 tome simple, continuous, very slightly thickened and reflected, operculum 

 well within the aperture, slightly concave, minutely multispiral, with a 

 large central plain area. 



A very large specimen measures alt. 1*1, major diam. - 08, but some 

 are only 07 in. in alt. Animal not observed. 



