HELIX. 



Platk CCVIII. 



Species 1467. (Mus. Brit.) 



Heljx vestalis. neLleatd mediocr'Uer umbilicata, sub- 

 globoso-deprema, nieeii, iiilidd, apice nitfricante ; aii- 

 fractibui qmiupxe ad sex, coiivexU, ultiiito mttlto Idliore ; 

 aperlurdfere circiilari, labro simplici, leviler expamo, 

 marginihM conideentibiDs. 



The vestal IIei.ix. Shell moderately umbilieatcd, sub- 

 globosely depressed, snow-white, shiuing, blackish at 

 the apex ; whorls five to six, convex, the last much 

 broader ; aperture nearly circular, lip simple, slightly 

 expanded, with the margins approximating. 



Paereyss, Pfeifler, Symbola?, vol. i. p. 40. Monog. 

 Helic. viv. vol. iii. p. 170. 



Hab. Egj'pt. 



An opake-white cyclostomoid shell, of simple spiral 

 growth. 



Species 1468. (Coll. D'Orbigny in Mus. Brit.) 



Helix monilifeba. Ihl. k-sld ohtecti umbUicatd, glo- 

 6o/id,parum depressd, obioleU striata, allu-cinerascenie, 

 fascik amjiisth inlerrupte nigro-fuscU moniliformibm 

 cingulatd ; aiifractUjus sex, rotuiidatin ; aperlurd ro- 

 tundato-lunari, lahro simplici, subexpanso. 



The necklace-bound IIelix. Shell with a covered 

 umbilicus, globose, but little depressed, obsolctdy 

 striated, whitish-ash, encircled with narrow inter- 

 rupted necklace-like brown bands ; whorls six, 

 rounded ; aperture rotuudatoly lunar, lip simple, a 

 little expanded. 



Webb and Beutiielot, Synopsis, p. 31.">. D'Orbigny, 

 JIoU. des Isles Canaries, p. 61. pi. 1. f. 21 and 22. 



Hab. Canary Islands. 



A small necklace-banded species, having somewhat the 

 external aspect of a Nerilina. 



Species 1469. (Coll. D'Orbigny in Mus. Brit.) 



Helix Lancekottexsis. IM. trstd obtecli umf/dicatd, 

 subglobosd, rugose tenuUiriald, albidd, fiisco sparsiin 

 interriipti fascia td ; anfractibiis quinqiie, coiivexis ; 

 aperlurd oMiqne litnari, labro simplici, iiitiis labialo, 

 ad columellaiii ditalato-reflexo. 



The Lanceuotte Helix. Shell with a covered umbi- 

 licus, subglobose, roughly finely striated, whitish, 

 sparingly banded with interrupted brown ; whorls 



December, 



five, convex ; aperture obliquely lunar, lip simple, 

 edged witliin, dilately reflected ot the columella. 



Webb and Bekthelot, Synopsis, p. 316. D'Orbigny, 

 Moll, des Isles Canaries, p. 60. pi. 1. f. 24, 25 



JIab. Lanccrotte Island, Canaries. 



Closely allied to the preceding species, and probably 

 only a coarse variety. 



Species 1470. (Mus. Brit.) 



Helix Alexasdri. Ilel. Usid peculiariter rima(o-uM- 

 bilicald, subgloboso-coiioided, pallide filled wl albidd, 

 supra minute costulato-striatd, infra Ittrigatd; spird 

 parum elerntd, apice acuminata ; anfractibiu quim/ue, 

 contexis, ultimo subinjlato, antice subito perdeflexo, 

 basi deciante ; aperlurd perobliqud, fere circulari, 

 labro iiicrassalo, continue, expanso-reflexo. 



Alexander's Helix. Shell with a peculiar defied um- 

 bilicus, suljgloboscly conoid, pale fulvous or whitish, 

 minutely rib-striated above, smooth beneath ; spire 

 but little raised, acuminated at the apex ; whorls 

 five, convex, the last rather inflated, suddenly very 

 deflected in front, deviating from the base ; aperture 

 very obli(|ue, nearly circular, lip thickened, continu- 

 ous, cxpandedly reflected. 



Gray, MSS. in JIus. Brit. PfeilTcr, Zeitschria fur Malac, 

 1845, p. 87. 



Hab. Damarha, South Africa ; ^Vlcxonder. 



Distinguished from all other species of the genus by 

 the prolonged subtubular deflection of the last whork 

 which throws the ajjcrturc into an Anattoma-XxVc position. 



Species 1471. (Mus. Brit.) 



Helix SCULPTCRATA. Ihl. ttstd laii-ttimi pertj>eclire 

 umbUicatd, depressd, discoided, concfntrici confrrlim 

 costatd, interslitiis reticulato-tlriatia, albidd: spirit 

 planulntd ; aifracldnis qvinque, eonr 

 tire basi constrirlo ; aperlurd circulan . 

 internis coarctatd, labro subrefiexo, nuirgimbut juncti*. 



The sciLPTUiiED Helix. Shell vcr)- broadly pcn>i)iT- 

 tively umbilieatcd, (Kpn'sscd, cliiicoid, concent riraily 

 closely ribbed, with the interstices rcticulatcly stri- 

 ated, whitish ; sjjirc flattened ; whorls five, convex, " 

 the last drawn out in from at the base ; opcrtun' 



1854. 



