HELIX.— Plate CLXXI. 



Species 1157. plus. Benson.) 



Helix Nicob.\rica. Eel. testa umbilkatd, aiiiislrali, so- 

 lidd, gloMosd, oblique slriatd, caitaneo-rufd, ad peri- 

 pAeriam, suluram, et basin albo-zonatd ; spird breci, ob- 

 lusd; anfraclibus quinque ad sex, contexiusctdis, ultimo 

 antice deacendente, bast inflato ; aperturd rotundalo-lu- 

 tiari; peristomate simplici, obluso, alio, margine colu- 

 mellari rejlexinsculo, umiiliciim/ere tejente. 



The Nicobae Helix. Shell umbQicatcd, sinistral, solid, 

 globular, ol)lic|uely striated, chestuut-rcd, white-zoned 

 at the periphery, the suture, and the base ; spire 

 short, obtuse ; whorls five to six, rather convex, the 

 last descending in front, inflated at the base ; aper- 

 ture rotundatcly lunar ; lip simple, obtuse, white, 

 columellar margin ratiier reflected, almost covering 

 the umbilicus. 



Chemnitz, Conch. Cab. vol. xi. p. 79. pi. lOS. f. 911-12. 



llab. Cuddapah, neai- Madras ; Wilson. 



A reversed banded species, of light texture. 



Species 1158. (Mus. Benson.) 



Helix Naninoides. TM. tesld angnste umbilicatd, orbi- 

 culato-convexd, solidiusculd, pallide fukd, superne nt- 

 fescenle, dislincle et conferlim striata, lineis concentricis, 

 seepe obsoletis, decussatd, hasi sidd<rvigald, distanter 

 striatuld ; spird depresso-conoided, apice obtitsd ; an- 

 fraetilus sex, vix convexiusculis, ultimo subangulato, 

 medio impresso ; aperturd transverse limari ; peristo- 

 mate recto, obtuso, subincrassato, ad umbiUcum brevis- 

 sime reflexo. 



The Nanin.v-likk Helix. Shell narrowly umbilicated, 

 orbicularly convex, ratlit-r solid, light fulvous, reddish 

 at the upper part, distinctly and closely striated, decus- 

 sated with concentric lines, which are often obsolete, 



rather smooth at the base, and distantly faintly stri- 

 ated ; spire dcpressly conoid, obtuse at the apex ; 

 whorls sLx, slightly convex, the last a little angled, 

 impressed in the middle; aperture transversely lunar; 

 lip straight, obtuse, rather thickened, very shortly re- 

 flected at the umbilicus. 



Benson, Ann. and Mag. Nat. Hist. 1842, vol. ix. p. 186. 



Hab. Singapore; Dr. Cantor. 



The finely decussated sculpture is less prominent to- 

 wards the lower part, leaving oft" at the periphery some- 

 what abruptly in places. 



Species 1159. (Mus. Benson.) 



Helix interrdpta. Hel. testa umbUicatd, tinistrali, or- 

 hictdato-convexd, ttimidiusculd, ad peripheriam obtuse 

 angulatd, superne arcuatim plicato-striatd, striis spira- 

 libus tenuicancellatis, fuho-stramined, temipellucidd, 

 zona pallide castaned ad peripheriam cingulatd ; spird 

 convexd, apice obtusd ; an/ractiius quatuor, ultimo ca- 

 rinato ; aperturd orbiculato-lunari ; peristomale sim- 

 plici, subincrassato, fuscato, ad umbilicum subdilatalo- 

 reflexo. 



The interrupted Helix. Shell umbilicated, sinistral, 

 orbicularly convex, rather swollen, obtusely angled at 

 tlie periphery, arcuately plicatcly striated at the upper 

 part, finely cancellated with spiral stria*, fulvous 

 straw-colour, semitransparent, encircled at the peri- 

 phery by a faint chestnut zone ; spire convex, obtuse 

 at the apex ; whorls four, the last keeled ; aperture 

 orbicularly lunar ; lip simple, rather thickened, 

 browned, subdilatcly reflected at the umbilicus. 



Benson, Zool. Journ. vol. v. p. 461. 



Hab. Botanic Garden, Calcutta ; Benson. 



Allied to II. Himalayana, Lea, but diflering in form and 

 sculpture. 



