124 



Shell globosely conical, thin, smooth, of a pale colour vari- 

 ously speckled with brown, and generally having a blackish 

 circumferential band ; spire rather elevated, its apex dark 

 coloured and obtuse ; volutions 5, ventricose, at first slightly 

 carinated, afterwards rounded ; suture slender ; aperture 

 nearly circular, very slightly acuminated posteriorly, a little 

 modified by the last volution ; peritreme thickish, rounded, 

 reflected ; umbilicus moderate. China, common. 



95. C. acutim arginatum. (pi. xxvii. f. 138. 139.) nob. 

 Zool. Proc. 



T. suborbiculari, conica, tenui, leevi, subpellucida, badia, 

 albido-marmorata; spira subacuminata, submamillari, anfrac- 

 tibus quatuor, rapide crescentibus, superne infraque rotundatis, 

 margine carinato, acuto, prope suturam marginemque coloribus 

 alternatis ; apertura magna, orbiculari, peritremate reflexo, 

 albo, incrassato, prope ultimum anfractum subinterrupto, su- 

 perne productiore, minime reflexo ; umbilico mediocri, pro- 

 fundo ; operculo corneo, multispirali. 



Shell nearly orbicular, conical, rather depressed, thin, 

 smooth, somewhat pellucid, of a brownish colour, marbled 

 with white ; spire rather acuminated, slightly papillary ; volu- 

 tions 4, increasing rapidly, rounded both above and below, 

 with a sharp keeled edge, with the colours alternating at the 

 suture and at the margin; aperture large, with a reflected, 

 white, and thickened peritreme rather interrupted by the last 

 volution, and rather more produced above, but not reflected ; 

 umbilicus moderate, deep ; operculum horny, multispiral. 



On palm leaves at Catbalonga, I. of Samar, Mr. Cuming. 



96. C. semisulcatum. (pi. xxv. f. 99.) nob. 



T. suborbiculari, depressiuscula, tenuiuscula, albicante, 

 fascia angusta mediana fusco-nigricante, postice plerumque 

 brunneo-variegata ; spira brevi, anfractibus quinque, postice 

 spiraliter sulcatis, sulcis distantibus, antice lseviter striatis, 

 vel lsevibus ; sutura distincta ; apertura fere circulari, peri- 

 tremate incrassato, subreflexo, postice angulifero ; umbilico 

 lato, intiis spiraliter striato ; operculo corneo, crassiusculo, 

 extus sublamelloso, intus leevi. 



Shell nearly orbicular, flatfish, rather thin, whitish, with a 

 narrow dark brown circumferential band, and posteriorly 

 generally variegated with brown ; spire very short, volutions 

 five, posteriorly spirally grooved with distant grooves, an- 

 teriorly smoothly striated or smooth ; suture distinct ; aper- 

 ture nearly circular, peritreme thickened, somewhat reflected, 

 with a posterior angle next to the last volution ; umbilicus 



