HELIX— Plate CXXXV 



hnliijmom, apice purpurascenle-rosed ; unfractiljus 

 quatuor ad qidnque, convexiunculU, uUiriio aiilice nubiCt 

 dejlexo ; aperturd Iranwersi oiliqua, obtuie Iriamju- 

 lari ; perktonwle incrasialo, alLo, brevUer rejlexo, 

 margine dexlro ad huertionem obioleli, medio calide, 

 tuberculaio, basali .striclinaciilo, inlrorsum dilalalo, 

 callow. 



The indented Helix. Slit-U iinix-itbratcd, depressly 

 globose, ratlier solid, obliquely cornigatcly plicated 

 and indented throughout, fulvous, banded with 

 chestnut, and freckled with white epidermis, purple- 

 rose at the apex ; whorls four to five, rather convex, 

 last whorl suddenly detlefted in front; aperture 

 transversely oblique, obtusely triangular; lip thick- 

 ened, white, shortly reflected, right margin obsoletely 

 tubercled at the insertion, strongly tubercled in the 

 middle, basal margin rather drawn out, dilated in- 

 wards, callous. 



Feuussac, Hist. Moll. pi. 48. f. 4. 

 Ifelix hidetitalis, Lamarck. 



Hal). Island of TenerifTe, Canaries. 



This and the preceding species are peculiarly charac- 

 teristic of the principal natural type of this locality. 



Species 84:j. (Mns. Cuming.) 



Helix Vilcanh. Ihl. Ivstd obtecti umbUicatd, deprrs»o- 

 fflobosd, leiiui, subpellucidd, oblique corruiiato-plicatd, 

 el iiuilleatd, fumeo-olivaced, fmciu diiabiu nigro-fiucU 

 siibreiiiolu miperiii ciiiifulnld, lineu breviiiit aliidu, 

 crintaltm digpoaitu, e miturd obicuri tnnergeiitiiiu ; au- 

 /raclHiia quiiique, contexu ; aperturd obliqui circulari ; 

 perktoiimte teiiuiter rejlezo, inlu* cnlluto-limlmlo, mar- 

 ginibm coiiiiiveiilHtiii, columella subappreud. 



The ViLCAN Helix. Shell with a covered umbilicus, 

 depressly gloljose, thin, subtrausparent, obliquely c»r- 

 rugately plicated and indented, dingy-olive, cDcircli-d 

 round the upper part with two black-brown bands, 

 with short whitLsh lines, arranged in tufts, emerging 

 I'rom the suture ; whorls five, convex ; aperture 

 obliquely circular : lip thinly reflected, udlous-edgwl 

 »vithin, margins approximating, columella a little »p- 

 pressed. 



Lowe, Ann. and Mag. Nat. Hist. vol. ix. p. 113. 



Hab. Island of Dcscrtc Grande, Madeira. 



An extremely characteristic species, of scinipcllucid sub- 

 stance, wrinkled and indented throughout. 



