CTATTIOPOMA. 143 



mouth as in 0. latilahre, tlie penultimate and antepenultimate 

 with two to foul' carinations ; the uiiibihcus furnished with verv 

 prominent spiral ribs up to the very apex of the shell ; ajjeiture a 

 little oblique, subcircular ; peristome doiihle, inner lip continuous, 

 dilated and crenated on its outer and lower margins, outer lip 

 irregularly angled on its outer margin and refiexed, much dilated 

 at its inner basal margin, subobsolete round the inner margin ; 

 operculum is in C. latUahre : gi'eatest breadth i inch [5 mm.], 

 extreme height about the same.'' 



JIah. India : Travancore Mountains, 3000 ft. elevation 

 (Jhddome). 



" Very similar to 0. latilahre., but rather larger, and with many 

 more carinations on the lowest whorl, and the inner peristome 

 crenated instead of simply angled ; the swelling near the aperture 

 is ])eculiar to those two species, and somewhat as in Alyanis, but 

 in a less marked degree." {Beddome.) 



The specimen figured is in the general collection of the British 

 Museum. 



200. Cyathopoma vitreum, Beddome, 



Ci/athopoma (Jerdonia) vitreum, Beddome, P. Z. S. 1875, p. 449, 



' pi. 5^, tigs. 21, ■2-2 ; Nevill, Hand List, i, 1878, p. 259. 

 CyathopovKi vitreitm, llanley & Tlieobald, Coucli. Ind. 1876, 



pi. 145, fig. 9; Theobald, Cat. Shells Brit. India, 1876, Addenda, 



p. ii ; rieiffer, Men. Pneum. Suppl. 3, 1876, p. 379. 

 Cycifhopovia (s. str.) vitreum, Kobelt & Mulleiulurti', Nachr. Deuts. 



Malak. Ges. xxix, 1897, p. 120; id.. Cat. Pueum. 1899, p. 32. 

 Cyathopoma {.Cyathopoma) vitreum, Kobelt, Das Tierreich 



Lief. 16, 1902, p. 224. 



Or'igincd description : — " Shell openly umbilicate, depresso- 

 turbinate, or rather subdiscoidal, the spn-e scarcely raised, whitish, 

 of a shining glass-like texture, without any epidermis; whorls 4, 

 the lowest terete, not descending, angulari-convex, with three 

 spiral prominently raised costulations round the region of tlie 

 periphery, and one between them and the umbilical region, the 

 upper portion nearest the suture non-lirate, or sometimes a fifth 

 line is there present, penultimate an<iulari-convex, bilirate, the 

 two apical whorls very small ; umbilical region spirally lirate 

 witliin; aperture a little oblique, subcircular; peristome single, 

 thin ; operculum double, with a very small central transparent 

 nucleus, a little concave externally from the margins beinw 

 slightly raised, outer layer less shelly than usual : greatest 

 diameter ^^ inch [1-75 mm.], height r^ inch [1T5 mm.]." 



Ilab. India: Sivagherry Mountains, Tinnevelly District, 1 000 ft. 

 elevation (Beddome). 



"This comes nearest to C. album ; but numerous specimens of 

 all ages show no sign of any ejudermis, and it is ot' a more depresx-d 

 form, and of a glassy rather than a horny texture ; the operculum 

 is nnich less concave and scarcely shelly," (Beddome.) 



