OCR Text |
Show 1875.] LIEUT.-COL. BEDDOME ON NEW LAND-SHELLS. 451 umbilicus furnished with very prominent spiral ribs up to the very apex of the shell; aperture a little oblique, subcircular; peristome halt-double ; the inner lip dilated and much angled on its outer margin, small and continuous round the inner margin, outer lip irregularly angled on its outer margin, and much dilated at the inner basal margin, where it suddenly terminates, not being continued round the inner portion of the aperture; operculum externally milky white, shelly, papilliform, smooth, flattened at the apex, where it is furnished with a small circular aperture, inner layer membranaceous, slightly concave externally, with a central diaphanous nucleus, multispiral, the edges of the whorls raised : height of shell T 3 ¥ inch, the greatest diameter equalling the height. South-Canara ghats, 2000-3000 feet elevation. The operculum is an exaggerated form of that of the typical Cyathopoma filocinctum, the margins of the outer shelly layers are arched over and almost meet in the centre, forming a papilla with only a small hole in the centre. CYATHOPOMA TRAVANCORICUM, n. sp. (Plate LIII. figs. 30 and 31.) Shell deeply and prominently umbilicated, turbinato-globose, glabrous, with rather obsolete vertical chestnut markings, spirally lirate, but not striated vertically ; spire conical, apex subacute ; whorls 6, the lowest with seven to eight carinations, commencing near the suture and generally but not always interrupted by a small space in front of the umbilical region, the same swelling and contraction is present near the mouth as in C. latilabre, the penultimate and antepenultimate with two to four carinations; the umbilicus furnished with very prominent spiral ribs up to the very apex of the shell; aperture a little oblique, subcircular; peristome double, inner lip continuous, dilated and crenated on its outer and lower margins, outer lip irregularly angled on its outer margin and reflexed, much dilated at its inner basal margin, subobsolete round the inner margin ; operculum as in C. latilabre: greatest breadth 4; inch, extreme height about the same. Travancore mountains, 3000 feet elevation. Very similar to C. latilabre, 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 peculiar to those two species, and somewhat as in Alycaus, but in a much less marked degree. CYATHOPOMA SHEVAROYANUM, n. sp. (Plate LIII. figs. 32 and 33.) Shell prominently umbilicated, turbinate, a little depressed, spirally lirate, epidermis dark fuscous, scarcely hairy, but with numerous very minute vertical striations, and a few larger prominent distant ones ; spire conical; whorls 5, the lower one with four rather inconspicuous costulations round the region of the periphery, smooth in the upper portion near the suture, and with a broad smooth space |