iqiy.] 



H. H. Godwin-Austen: MoUnsca, VII. 



579 



cal ; peristome closely double, continuous, the outer much expanded 

 on the lower columellar side. 



Size: major diameter 4'75, alt. axis ii"25 mm. 



Only one specimen of this species was received ; the form and 

 sculpture at once show its distinctness from the other species from 

 the valley of the Tsanspu. 



The next two species differ so much from Pseudopomatias in 

 the form of the last whorl that they require generic distinction, 



Eupomatias, n. gen. 



Shell in all respects similar to Pseudopomatias, with similar 

 costulation; peristome double, well developed, perforate, the cos- 

 tulation on the left side of the last whorl terminates upon a strong 

 raised keel bounding the umbilical region ; this keel extends up to 

 the peristome on the lower basal side of the aperture. 



\h 



'-^a:^ 



Fig. 6 A. — Eiipomntias sibhiinioisis, n. sp. 

 ,, 6 B. — ,, oakesi, n. sp. 



,, 6 C. — Pseudopomatias siyomensis, n. sp. 

 ,, 6 D. — ,, Jiimalayae, Bs. 



(All multiplied 6 times.) 



Type: Eupomaiia9, sibbumensis, n. sp. 



The keel has a knotted or beaded appearance, and it would 

 seem that the mantle edge must develop a close fold, the costula- 

 tion causing an irregular thickening of the peristome as it is added 

 to. I give figures (text-fig. 6 C and D) of the basal side of Pseudo- 

 pomatias himalayae, Bs., and siyomensis, to show how Eupomatias 

 differs from them. 



Eupomatias sibbumensis, n. sp. 

 (Text-figs. 5 C and 6 A.) 



Locality. — Sibbum, Yamne Valley, Abor Hills {Capf. G. F. T. 

 Oakes, R.E.}. 



Shell scarcely perforate, elongately turreted, soUd; sculpture 

 strong regular close costulation, which on last whorl terminates at 

 the umbilical keel (text-fig. 6 A) ; colour not seen, shells bleached; 



