HELIX. 



Plate CLXXI. 



Species 1153. (Mus. Benson.) 



Helix lubrica. Uel. lestd umhiUcaia, deprewa, obwMi 

 radiata, poUlmimS, luleo-fiilvescenle eel olivaced; spird 

 planimculd, apice vix proniinuld, oblitsd ; sulurd letiter 

 canalicula/d ; ati/racliius quiuque, uUimo rotundalo, 

 bad coiwexo ; aperlurd late lunari, vixoiliqiid; peri- 

 stomate acuta, intua interdum subremoti alliido-iabiato, 

 margiite coluinellari oblique descetideiite, iubiinuaio, le- 

 viter incransato, supenii reflexiusculo. 



The slimy Helix. Shell umbilicated, depressed, obso- 

 letely rayed, verj' polished, yellowish-fulvous or olive; 

 spire rather flat, slightly prominent and obtuse at the 

 apex; suture a little ehanneUed; whorls five, the last 

 rounded, convex at the base ; aperture broadly lunar, 

 a little oblique ; lip sharp, sometimes rather distantly 

 white-edged within, columellar margin obliquely de- 

 scending, rather sinuous, sUghtly thickeued, a little 

 reflected at the upper part. 



Benson, Ann. and !Mag. Nat. Hist. 1S52, vol. x. p. 349. 



Hob. Darjeeling, Sikkim Himalaya ; Dr. Chapman. 



A smooth polished horny species, rather depressly dis- 

 coidly convoluted. 



Species 1154. (Mus. Benson.) 



Helix tescoruii. Ilel. tesid imperforald, ijlobosd, solidi- 

 usctild; spird convexd ; suturd peculiariter canalicu- 

 latd ; anfraclibus quinque, rolu»da(is, oblique subpli- 

 cato-striatli, ullimo atilice descendenle ; aperlurd ro- 

 tundalo-lunari ; periitomate subexpamo, margine colu- 

 viellari rejlexo, ad aream umbilicalem late calloso-dila- 

 talo. 



The wilds Helix. Shell imperforated, globose, rather 

 solid ; spire convex ; suture peculiarly channelled ; 

 whorls five, rounded, obliquely subpUcately striated, 

 last whorl descending in front ; aperture rotundately 

 lunar ; lip a little expanded, columellar margin re- 

 flected, broadly callously dilated over the umbilical 

 area. 



Benson, Ann. and Mag. Nat. Hist. vol. xi. p. 30. 



Hab. Shark's Bay, Australia. 



The shell here represented has a worn opake-white as- 

 pect, but it has some faint traces of rusty brown, so that 

 the species in fine condition may probably be coloured. 



Species 1155. (Mus. Benson.) 



Helix TCGURIUM. Uel. Utla minute undAlicatS, tenui, 

 virente-comed, pellucidd, tubpyramidali-depreud ; tpird 

 plano-declivi , apice mucronatd ; anfractibut quinque ad 

 sex, supenii dense sublilissimi eoslulato-striatis, ttriit 

 spiratibus deeussatis ; subtut polild ; aperlurd oblique 

 lunari ; peristomate simplici, margine ad umbilicum 

 brevissime rejlexo. 



The shed Helix. Shell minutely umbilicated, thin, 

 greenish-horny, transparent, somewhat pyramidally 

 depressed ; spire flatly slanting, pointed nt the ap« , 

 whorls five to six, densely very finely rib-bke striated, 

 decussated with spiral strite ; polished beneath ; aper- 

 ture obUquely lunar ; lip simple, margin very shortly 

 reflected at the umbilicus. 



Benson, Ann. and Mag. Nat. Hist. 1S52, vol. x. p. 348. 



n(J>. Darjeeling, Sikkim Himalaya ; Trotter. 



The spire of this s])ecies, which is densely decussately 

 striated, has somewhat a p}Tamidally raised form. 



Species 1156. (Mus. Benson.) 



Helix cycloplax. Ilel. testd lati profundi umbilicatd, 

 orbiculato-depreud, supra conferlim et undatim radiaio- 

 striatd, striis spiralibus decussatd, granulatd ; rufes- 

 cente-conieu, sublus Itrviore, pallida, fascia mtdiand 

 castaned circumdatd ; spird coHtexiuscula, apice pla- 

 nald ; suturd primum • ' ' ' '. dentuut imprettd ; 

 anfraciibus quinque, ul' ito ; aperlurd tub- 



quadrato-lunari, obliqud, intut interdum albo-tublabi- 

 aid ; peristomate simplici, aeuto. 



The round-table Helix. Shell broadly deeply umbi- 

 licated, orbicularly depressed, closely radiately wave- 

 striated above, decussated with spiral striie, granu- 

 lated ; reddish -homy, smoother beneath, pale, sur- 

 rounded with a ceiitnd chestnut band; spin; rather 

 convex, flattened at the apex ; suture at first rather 

 obsolete, at last impressed ; whorls five, the lost 

 keeled ; aiK-rtiire somewhat squar»ly lunar, oblique, 

 slightly white-edged within ; lip simple, acute. 



Benson, Ann. and Mag. Nat. Hist. 1853, vol. x. p. 348. 



Uab. Darjeeling, Sikkim Himalaya; Trotter. 



A broad chestnut-banded species, flattened down, ai it 

 were, at the apex. 



October, 1853. 



