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Show 1895.] BORNEO AND NEIGHBOURING ISLANDS. 115 the identity of this variety with the present species, but until we have more conclusive evidence to the contrary it seems to me advisable to consider it as such. 45. AMPHIDROMUS PEEVEBSUS, var. (Plate III. fig. 19.) Hab. Sadong, West Sarawak. The two dextral specimens belong to the variety named Bulimus atricallosus by Gould, which was founded upon specimens collected in Tavoy, Burmah. B. eques, Pfeiffer, also belongs to this variety. The types appear to have been bleached, either naturally or artificially. Neither of the Sadong examples exhibit any periodic oblique black stripes. 46. AMPHIDEOMUS HOSEI. (Plate III. fig. 20.) Testa parva, rimata, sinistrorsa, elongata, conica, sub epidermide tenuissima pallide flava, linea angusta rufo-purpurea circa anf. ultimi medium et supra suturam cincta, versus apicem fusco-maculata ; anfractus 7, convexiusculi, lineis incrementi tenuissimis et obliquis striati, lente regulariter crescentes, ultimus brevis, circa rimam angustam nigro tinctus; apertura inverse auri-formis, pallide flavescens, linea rufo-purpurea mediana picta, longit. totius 5 paulo superans,- peristoma album, breviter expansum et refiexum, margine columellari incrassato breviter dilatato. Longit. 31 millim., diam. 14; apertura IL longa, intus 7 lata. Hab. Meri, Sarawak (G. Hose). A small species, rather like A. suspectus, Martens, from Timor and Sumbawa. It is differently coloured, the increase of the whorls is slower, and the bod}r-whorl and aperture are smaller. The apex is not black, and the fourth aud fifth volutions exhibit some pale brown spots or stripes. Only a single specimen examined. 47. CYATHOPOMA EVEBETTI. (Plate III. figs. 21, 22.) Testa minuta, aperte et perspective umbilieata, breviter conoidea, cornea ; anfractus 4|, primi duo Iceves, convexi, magni, nucleum obtusum formantes, penultimus tricarinatus, carina mediana aliis magis conspicua, ultimus circa medium tricarinatus, circa umbilicum carina tenui prominente et intus carinis duobus minoribus instructus, inter carinas microscopice reticulatus; apertura subtriangularis, inferne acuminata, effusa ; peristoma continuum, margine externo ad carinas triangulato, intus paulo incrassato, columellari arcuato, tenuiore. Diam. maj. 2 millim., alt 2. Hab. Rumbang, Sarawak. A minute species, well characterized by the strong carinte, the large apex, and triangular aperture. 8* |
