HELIX. 



Plate CXXV. 



Species 746. (Mus. Benson.) 



Helix ceinigera. Ilel. teatd umbUkatd, depreuo- 

 comided, aordide olivacea, hirsutd, praserlim ad su- 

 turaa ; apird obluad ; anfractiim sex ad septem, pla- 

 nalis, ultimo acute carinato, basi convexo, medio exca- 

 vate ; aperturd tramverse Itinari ; peristomate nim- 

 plici, aciiio. 



The hairy Heli.\. Shell umbilicated, deprcssly conoid, 

 dirty-olive, hairy, especially at the sutures ; spire 

 obtuse ; whorls sL\ to seven, flattened, the last shaqily 

 keeled, convex at the base, excavated in the middle ; 

 aperture transversely lunar ; lip simple, acute. 



Benson, iVnn. and Mag. Nat. Hist. 1850, vol. v. p. 2li. 



Hab. Nilgherry Mountains ; Jerdon. 



Characterized by a sprinkling of bristly hairs, protrud- 

 ing chiefly from the sutures. 



Species 747. (Mus. Benson.) 



Helix ckassicostata. Hel. testa late timbilicatd, de- 

 presso-pland, subtus rotundatd, opaco-lacled ; anfracli- 

 bm quatuor, undique valde irregulariter plicato-costatd, 

 ultimo superne angulato-carinato ; aperturd transverse 

 ovatd ; peristomate subrejhxo, marginibus fere junctis. 



The thick-ribbed Helix. Shell broadly umbilicated, 

 depressly flattened, rounded beneath, opake cream- 

 colour ; whorls four, very irregularly plicately ribbed 

 throughout, the last angularly keeled at the upper 

 part ; aperture transversely ovate ; lip a little re- 

 flected, margins almost joined. 



Benson, Ann. and Mag. Xat. Hist. 1848, vol. ii. p. 159. 



Hah. Southern India; Jerdon. 



A peculiarly wrinkle-ribbed chalk-like shell, with a per- 

 fectly level spire. 



Species 748. fMus. Benson.) 



Helix ruginosa. flel. teatd subampliter umiilicaid, de- 

 pressd, opaco-lacted, fascia angustd rufd cingulatd ; 

 tpird subelevald; aii/raclibus quatuor, convexis, irre- 

 gulariter plicato-costatis ; aperturd tramverai ocatd ; 

 peristomate subreflexo, marginibus fere junctis. 



The wrinkled Helix. Shell rather largely umbilicated, 

 depressed, opake creara-colour, encircled with a nar- 

 row red band ; spire somewhat raised : \vhorls four, 



August, 



convex, irregularly plicately ribbed ; aperture inuis- 

 versely ovate ; lip a little reflected, margina almost 

 joined. 



Febussac, Hist. Moll. pi. 71. f. 4. 



Hab. Southern India. 



The preceding species only differs from this in having 

 the spire completely flatly dcpn'ssid, and iii hanng a 

 larger umbilicus. The presence of a retl band is a cha- 

 racter of Lttle importance. 



Species 749. (Mus. Benson.) 



Helix capitum. Eel. testa umiilicaid, Trocktfonu, 

 tetiui, atrial uld, rufeacente-corued, opaco-alio lentigi- 

 nosd ; aiifracliius quinque ad sex, superne rotuiuLitis, 

 deinde aubconcavis, ultimo acuii carinato, liasi plano- 

 coHcexo ; aperturd Iraiiscera^- ocatd ; perii/ontale lenni, 

 margine columellari laii JUatalo, umiiJicum fere le- 

 gente. 



The top-knot Helix. Shell umbilicated, Trochus- 

 shaped, thin, finely striated, reddish-homy, freckled 

 with opake-whitc ; whorls five to six, rounded it the 

 upper part, then slightly conciivc, last whorl shf>rj)ly 

 keeled, flatly convex at the base; npertorc tmnv 

 versely ovate ; lip thin, coluniellnr margin broadly 

 dilated, almost covering the umbilicus. 



Benson, Ann. and Mag. Nat. Hist. 1843, vol. ii. p 160 



Hah. Sicrigully, Province of Bnlmr, Northern India . 

 Boys. 



A very characteristic whitc-frecklcd species, partaking 

 of the characters of Bulimus. 



Species 750. (Fig. a, b, Mus. Benson.) 



Helix tapeina. Uel. teatd perampUtrr Hmbilicald, ilr- 

 presad, subdiscoided, lulescenle ; anfraclibu* ta, cun- 

 rexis, superfcialiter plicato-atrinld, n ' niUt, 



subtus rotundato ; mubilico lati perap- irtiu 



onmea exUbente ; aperturd luHalo-cireutan ; perislo- 

 iimte cix reflexo, margiHibua connicfHtibui. 



The lowly Helix. Shell very largely umbilicated. di- 

 pressed, somewhat discoid, yellowish ; whorls *\x, 

 convex, superficially plicately striatrd, last whorl 

 keeled, niundod undenieath ; umbilicus broadly per- 

 spective, exhibiting all the whorls; aperture lunnr- 



1852. 



