HELIX.— Plate CLXXII. 



preisa.'teiiui, aiililavigald, nitidd, Iratulucente, pallidi 

 ruiello-corned ; spird brevi, coiioided, acuminaliusculd ; 

 atifractibus sex, tix contexiusculk, ultimo latiore, non 

 deaceiidente, basi subplanulato ; aperlurd subcerlicalt, 

 late liiiiari ; periatomate aiviplici, acuta, margine colii- 

 mdlari arcualo, mbdecUvi, siipenie brevissinii rejlexo. 



TnK VASE Helix. Shell sligbtly umbiUcated, conoidly 

 depressed, thia, rather smooth, shining, translucent, 

 pale reddish-horny ; spire short, conoid, rather acu- 

 minated ; whorls six, slightly convex, the last broader, 

 not descending, rather flattened at the base ; aperture 

 subverlical, broadly lunar; lip simple, sharp, colu- 

 mellar margin arched, rather slanting, very shortly 

 reflected at the upper part. 



Benson, Ann. and Mag. Nat. Hist. 1852, p. 406. 



Hab. Uajniahal Hills, India; Benson. 



Very like the preceding species, but less umbUicated 

 and rather more acuminated. 



Species 1165. (Mus. Benson.) 



Helix subjecta. Eel. testa umbiUcatd,conoideo-depressd, 

 teiiiti, striatd, corned, oleosa ; spird breviter conoided, 

 acutiusculd ; stiturd Itevi, albido-marginatd ; atifracti- 

 bus sex ad septem, vix convexiuacuUs, ultimo lato, subdc- 

 presso, non descendenle, basi pariim convexo ; aperlurd 

 parum obliqud, rolundato-lunari ; peristomate simplici, 

 redo, margine columellari subrecedente, arcuato, su- 

 pemi brevissime rcJlexo. 



The subject Helix. Shell umbilicated, conoidly de- 

 pressed, thin, striated, horny, oily ; spire shortly 

 conoid, rather sharp ; suture smooth, white-edged ; 

 whorls six to seven, slightly convex, the last broad, 

 a little depressed, not descending, but little convex 

 at the base ; aperture rather oblique, rotuudately lu- 

 nar ; lip simple, straight, columellar margin slightly 

 receding, arched, very shortly reflected at the upper 

 part. 



Benson, Ann. and Mag. Nat. Hist. 1852, p. 407. 



Hab. Uajmahal Hills, India; Benson. 



01' flatter and more discoid growth than the preceding 

 species, from the same locality. 



poind, radiato-slriatd ; tpird conoided, apiee acviiiu- 

 cttld, fuscatd ; sulurd impressd ; anfraclibua quinque, 

 aubconvexia, lente accreaceulibua, auperiorilua suprrni 

 faacid rujo-fuicd anguatd, demum obsolvld, marginalia, 

 ultimo non deacendente, carinato ; aperlurd aubverlicali, 

 angidato-lunari ; periatomate acuto, marginibui con- 

 vergentibua, columellari terlicali, cum baaati angulum 

 rotundatum formatite, auperne breeiaaime reflexo. 



Bacon's Helix. Shell narrowly umbilicated, depressly 

 turbinated, very thin, pellucid, pale homy, elegantly 

 decussately wrinkle-striated at the upjKr part, silky, 

 polished beneath, radiately striated ; spire conoid, 

 rather sharp and brown at the apex ; suture im- 

 pressed ; whorls five, rather convex, increasing 

 slowly, upper whorls margined at the upper part 

 with a red-brown band, which becomes obsolete, last 

 whorl not descending, keeled ; aperture nearly verti- 

 cal, angularly lunar ; lip sharp, margins converging, 

 columellar margin vertical, forming, ^vith the basal 

 margin, a rounded angle, very shortly reflected at the 

 upper part. 



Benson, Ann. and Mag. Nat. Hist. 1850, vol. vi. p. 251. 



JIab. Banks of the river Gungun, near Jloradabad, India ; 

 Dr. Bacon. 



The specimen here figured is the only one that has been 

 at present found of this species. 



Species 1166. (Fig. a, b, Mus. Benson.) 



Helix Baconi. Uel. teatd anguate umbilicatd, depreaso- 

 turbinatd, tenuiaaimd, pellucidd, pallide corned, auperne 

 elvganler decuaaalim corrugalo-atriatd, sericed, aubtua 



Species 1167. (Mus. Benson.) 



Helix albidens. Uel. teatd imperforatd, aubdepreaao- 

 conoided, basi depreaao-rotundatd ; spird gradatim ele- 

 vatd, rufo-fuscescente, lined mediand caataned cingu- 

 latd ; anfractiius sex ad aeptem, conrexia, aubobaoUli 

 arcuatim plicato-alriatia ; aperlurd anguate lunari ; 

 peristomate tenui, margine columellari dente incrasaalo 

 calloao alio conspicue muniio. 



The white-tooth Helix. Shell imperforated, somewhat 

 deprcssly conoid, dcpressly rounded at the base ; spire 

 gradually raised, reddish-brown, encircled round the 

 middle by a chestnut line : whorls six to seven, con- 

 vex, rather obsoletely arcuatcly plicatcly striated; 

 aperture nan-owly lunar ; lip thin, columellar margin 

 conspicuously furnished with a thickened white cal- 

 lous tooth. 



Benson, Ann. and Mag. Nat. Hist. 1853, vol. xi. p. 31. 



Helix monodonia, Grateloup (not of Lea). 



Ilab. llauritius ; Sir David Biu-clay. 



Well distinguished by its callous J/b«orfo«<a-likc tooth 



