HELIX.— Plate CLXXVII 



slrialeil, shining wliitc, sometimes mnny-liaiided ; 

 spire sliort, rather sharp at tlie apex ; wliorls six, 

 convcxly shinting ; aperture lunar rounded, lip simple, 

 sharp, faintly flesh-edged witiiin, margins rather ap- 

 proximated. 

 Teiiveu, Catalogue, p. iC. ])1. 3. f. 5, 7. 

 llab. Algeria. 



A shining white species, sometimes encircled with nu- 

 merous bands. 



Fig. 1210. (Mus. Pfciffer.) 

 Helijc jwrplexa, Fi'russac, synonymous with //. gram- 

 fera. Gray, described and figured in I'latc Lll. Sp. 252. 



Species 1211. (Mus. Pfciffer.) 

 Helix stexojipiiala. llel. lestd unijutti- imbilicata, i/h- 

 boso-th-prem't, xitbliUler striata, lutescente, castuiwu 

 trifanciatd, fasciis extimk dilatalU el diliUu ; anfrac- 

 tibiis qiihiqiie ad sex, conrcxiiisciilU, ultimo iiijlato, 

 atitici vix desceiidenle ; api:rlmd /ate luiiari, labro n- 

 Jlexiusculo, late aUo-labialo, margiiie columellari n- 

 Jli'xo, appresm, iimbilicum fere tegente. 

 'li£E NAUKOWLY UMBiLiCATED Helix. Shell narrowly 

 umbilieated, globosely depressed, finely striated, yel- 

 lowish, eneircled wilii three chestnut bands, the outer 

 of which are dilatcil and diluted ; wliorls five to six, 

 rather convex, the last inflated, scarcely descending in 

 front ; aperture broadly lunar, lip slightly reflected, 

 broadly white-edged, coluniellar margin reflected, ap- 

 pressed, nearly covering the umbilicus. 

 Menke, Synopsis (2iid edit.), p. 12C. 

 Hub. Croatia. 



Distinguished chiefly by the character of its three encir- 

 cling bands, the outer of which arc faintly marked and 

 spread, whilst the centre is dark and determined. 



Species 1212. (Mus. Pfciffer.) 



Helix ociiiioleuca. llel. lesld am/uste inMlicald, glo- 

 biiloso-depresid, leriter strlatd, alltiilu, Kiiperni ocliraceo 

 earirgatd, el fasciis atirantiis varii riugulatd ; spird 

 brevi, obtiisd ; siitiird liiieari ; aiifruclibus septem, 

 planis, ultimo medio cariiiato ; colioiirlld brerissiiiid, 

 verlicali ; aperturd laid, luiiari, labro xiiii/iliri, mar- 

 giiie columellari rtflexo, uiiibilicmii pnrtim tegente. 



The yellow-white Helix. Shell narrowly umbilieated, 

 globulously depressed, slightly striated, wiiitish, va- 

 riegated at the upper part with ochre, and variously 

 encircled with orange bands; spire short, obtuse; 

 suture linear; whorU seven, flat, the last keeled iu 



tlie middle ; columella very short, vertical ; aperture 



broad, lunar, lip simple, coluraellar margin reflected, 



partially covering the umbilicus. 

 Helix {IMicoslyla) ochroleuca, Ferussac, Prodrome, p. 30s. 



Hist. Moll. pi. 30. f. 1. 



Jlelix aliella, Chemnitz. 

 Ilab. Bermuda; Menkc. 



A delicjitely painted shell, with somewhat the aspect of 



a lleliriiia. 



Species 1213. (Mus. Pfciffer.) 



Helix explanata. Jlel. testa umiilicatd, depre.vid.plaiio- 

 spiratd, opaco-albd, dense corrugato-slriatd ; anfracti- 

 bus (juiuque, ad peripheriam carina conipressa injlalis ; 

 aperturd securlformi, labro acuto, intus lahialo. 



The flattened Helix. Shell umbilieated, depressed, 

 flatly spired, opake-white, densely wrinkle-striated; 

 whorls five, inflated at the periphery with a com- 

 pressed keel ; aperture hatehct-shaped, lip shaqi, 

 edged within. 



MuLLER, Verm. vol. ii. p. 26. 



lleUx pluiiorbis marginala, Chemnitz. 

 Helix albella, Draparnaud. 

 Carocolla albella, Lamarck. 



Hal). Algeria and South of France. 



Tim « liorls of the species are pinched out at the jjeri- 

 pli( ry into a compressed keel, which is seen throughout 

 tlie spire in the place of the suture. 



Species 12U. (Mus. Pfeifler.) 



Helix levis. Hel. testa rix umbilicatd, globosd, tenni, 

 l/cri, obli/jue striata, obsolete granulatd, aliidd, punc- 

 tis serialis vet fasciis pellucide cornets rarie oriiald ; 

 .spird bred, acutiiiseuld ; aufractibus quiiique, coHcexis, 

 ultimo iujlalo ; aperturd rotuudato-lunari, labro acuto, 

 Vitus siiblabiato, margine columellari superiin dilafato 

 et reflexo, umbiticum fere tegente. 



The light Helix. Shell scarcely umbilieated, globose, 

 thin, light, obliquely striated, obsoletcly granulated, 

 whitish, variously ornamented with rows of trans- 

 parent horny dots or bands ; spire short, rather sharp ; 

 whorls five, convex, the last inflated ; aperture ro- 

 tundatcly lunar, lip sharp, slightly edgc<l within, 

 columcllar margin dilated and reflected at the upi>er 

 part, almost covering the umbilicus. 



Pi'EiKKKU, Zeitschrift fiir Malac. 1S45, p. 152. 



Hab. IJaiiks of the Columbia River, California. 



A light inflated shell, extremely delicately pencilled with 

 scinilrnusparent horny lines and rows of dots. 



