HELIX. 



Plate XH. 



Species 45. (Fig. a to g, Mus. Cuming.) 



Helix hibabilis. Hel. testa imperforatd, sttbglobosd, 

 aolidimadd, Itevmimd, nitente ; caiididd,fascih nigri- 

 canlibits vel aurando-castanels varie et irregulariter 

 dngulatd, epidermide tenui cornea indutd; sjtird ob- 

 tusd ; anfractibm quatuor ad quinque, convexiuscniis, 

 ultimo plerumque trifaiciato ; sutiird margimtid ; colu- 

 melld arcuaid, intrante, lemter excavatd ; aperturd 

 ampld, luiialo-otali, bad effusd; peristomate albo, 

 margine dextro late reflexo, basalt subincrassato, ap- 

 presso,fasciis pone Mruni peculiariler intemiptis. 



The wonderful Helix. Shell imperforated, subglo- 

 bose, rather solid, very smooth, shilling ; white, va- 

 riously and irregularly encircled with blackish or 

 orange-chestnut bands, covered with a thin homy 

 epidermis ; spire obtuse ; whorls four to five in 

 number, rather convex, last whorl generally three- 

 banded ; suture margined ; columella arched, enter- 



ing, slightly excavated ; aperture large, lunar-oval, 

 effused at the base ; lip white, riirht edge broadly re- 

 flected, basal edge rather thickened, appresscd, bands 

 peculiarly interrupted behind the lip. 



Feeussac, Prodrome, p. 320. Hist. Moll. pi. 31. f. 4-6. 

 Helix formosa. Wood. 

 Helix galactites, Lamarck. 



Hab. Islands of liUzon and Marinduquc, Philippines ; 

 Cuming. 



The specimens selected for the illustration of this 

 species show that it varies greatly both in form and 

 colouring. The whorls are convoluted, now into a globose, 

 now into a comparatively oblong form, and the bands 

 are sometimes broad, black or pale oninge-chcstnut, and 

 sometimes linear. The surface is mostly covered by a 

 thin shining horny epidermis. It is a peoiliarily worth 

 notinn; in tliis species, that the colouring abniptly ceases 

 just before reaeliiug the reflected lip. 



April, 1S51. 



