HELLX.— Plate XV. 



witliin witlr black, base obsoletely toothed, margins 



Joined by a callosity. 

 SowEKBV, I'ro. Zool. Soc. Ib40, p. 89. 



liulimm aratiu, I'fcifTcr. 

 Uab. Island of Tablas, Philippines ; Cuming. 



It is soracwhnt dillicult to detormine to what -jcnus 

 this interesting species should be referred, for it partakes 

 alike of the characters of Ilel'uc, Bulimut, and Piipn. 



II. polychroa, but narrower. The burnt-brown colouring 

 of the base is constant and characteristic. 



Sjx'cies CO. (Fig. a, 6, Mus. Cuming.) 



1 1 ELI. X oRBlTUL.i. Ilel. Uttd imperfuratd, ovato-fflobosd, 

 crauiuKuld, Itevi, alia, bati fusco-lute»cenlt, fasciU 

 rujis et viriJibus varii omald ; anfradibus ijiialiior ad 

 ijuinque, contetiuxculin ; sii/urd diiliiicld, cremilatd, 

 albd ; colmnelld laid, aUid, subarcuald ; aperlurd lu- 

 iiato-rolundald, inliu albd ; pmstomate simplici, lad 

 rxpaiuo. 



The impressed Heli.v. Shell imperforated, ovately 

 globose, rather thick, smooth, white, brown-yellow 

 at the base, variously ornamented with red and green 

 bands ; whorls four to five, rather convex ; suture 

 distinct, crenulated, white ; columella broad, white, 

 slightly arched ; aperture lunar-rotundate, white 

 within ; lip simple, broadly expanded. 



tiowEUBV, Pro. Zool. Soc. 1840, p. 87. 



Hub. Island of Mindoro, Philippines ; Ciniiing. 



The last whorl of this species is mostly tinged with 

 olive-grccn, leaving a white band next the suture as in 



.Species 01. (Mus. Cuming.) 



Helix dimeiia. Ilel. tetid imperforatd, subgloboto-conicd, 

 apice oblutd, (enuiusadd, epiderviide viridi-Jlavd ; aii- 

 fractit/us quinque, concexU, oblique utriatU, primit 

 piirpuraKentibiii, penultimo alio, uUimo coloriiiu bi- 

 partitU, dimidio supremo albo, altera purpureo-niffro ; 

 suturd dulinc/d, purpureu-niyrd, marginatd ; aperlurd 

 nemilunari, Mus alia; perintomale aiigmQ reflexo, 

 fiisco-nigro ; columella ubliqiie descendente, albidd, 

 dilalald. 



The bu'aktite Helix. .Shell imperforated, somewhat 

 globosely conical, obtuse at the apex, rather thin, 

 covered with a pale green epidermis ; whorls five in 

 number, convex, obliquely striated, the first tinged 

 with purple, the last but one white, the last cipially 

 divided in respect of colour, the upper half white, 

 the lower half puqile-blaek ; suture distinct, purple- 

 black ; aperture semilunar, interior white ; lip thinly 

 reflected, brown-black ; columella obliquely descend- 

 ing, white, dilated. 



Jonas, MoUusk. bcitr. p. 23. i)l. 11. f. 17. 



Hab. Philippine Islands ; Cuming. 



The divided colouring of the whorls of 

 very characteristic, the lower half being of 

 black, the upper half white, covered with a delicate pale 

 green epidermis. 



this species is 

 rich purple- 



