HELIX 



Plate XXXIX. 



Species 147. (Fig. a, b, c, Mus. Cuming.) 



Heli\ sepclchralis. Ed. te»td late umiilicata, de- 

 prejsid, tenui, Itsvu/ala, tarii oblique plicata, cwsianed, 

 aUjo-zonatd vel pallide fulvexente ; apird bretnmmd, 

 viz emend; anfradil/ut qualuor, rapide accreaceniiiiu, 

 aulco concentrico impresti^, ultimo ba»i converiusculo, 

 circa um&ilicum infundibulifomtem angulaio, antitx de- 

 fleio ; apertiird perobliqud, elliptieo-orali, intm ca- 

 rulescenie ; periitomate late reflexo, marffinilius callo 

 tenui junctii, dextro medio angulatim dilatato. 



TuE SEPtTLCHKAL Helix. Shell broadly umbilicated, 

 depressed, thin, smooth, variously obliquely plicated, 

 chestnut, zoned with white or pale yellow ; spire very 

 short, but slightly raised ; whorls four, rapidly in- 

 creasing, impressed with a concentric groove, last 

 whorl rather convex at the base, angular and funnel- 

 shaped around the umbilicus, deflected anteriorly; 

 aperture very oblique, elliptically oval, bluish within ; 

 lip broadly reflected, margins joined by a thin callous 

 layer, right margin angularly dQated in the middle. 



Febussac, Hist. Moll. pi. 75. f. 1. and pi. 75 C. f. 1-12. 

 Helix labrella, Lamarck. 

 Helix tricUiata, Bom. 



Ed), iladagascar. 



This elegantly-formed species is variously banded, the 

 umbilicus being sometimes dark chestnut within, as in Fig. 

 147 b, and sometimes yellow, as in Fig. 147 c. The first 

 of these varieties differs slightly in form, while it is more 

 compressly flattened around the umbilicus, of more solid 

 structure, and the dark purple-chestnut colouring of the 

 bands runs into the bine-white of the lip. 



Species 133. (Mus. Cuming.) 



Helix Stcderiana. Eel. tettd impeiforald, subglobow, 

 tenui, saturate brunned vel oliraceo-fuacd, oblique striata 

 et trantrersim minutiisime rugulosd ; tpird semiglobo- 

 »d ; anfractibus sex, summis planulatit, eleganter gra- 

 nulatis, ultimo inflato, obsolete angvlato eel sulco im- 

 presso ad peripheriam notato ; aperturd rotundato-lu- 

 nari, intus margaritaced ; columeltd subcontortd, cal- 

 losd ; periitomate reflexo, inius alio. 



Studer's Helix. Shell imperforated, subglobose, thin, 

 dark brown or olive-brown, obliquely striated, and 

 transversely very minutely wrinkled : spire semi- 



globose; whorls six, upper ones rather flattened, 

 elegantly granulated, the last inflated, obsoleteiy 

 angled, or marked at the periphery with an impressed 

 groove ; aperture rotundately lunar, pearly within ; 

 columella slightly twisted, callous; lip reflected, 

 white within. 



Feritssac, Hist. Moll. pi. 103. f. 6. 



Hob. Seychelle Islands. 



Of a pec\Uiar semiglobose inflated form, with an inclina- 

 tion in the columella to become twisted. 



Species 156. (Fig. a, b, Mus. Cuming.) 



Helix tmdextata. Eel. testa imperforatd, oHnculaio- 

 caiundea, utriatd, rugulis eoncentriris Ivieuque wuMmtit 

 oblique decussatis sculptd, saturate castaned; spira obtate 

 conoided ; anfractibut sex, eonxexii, ultimo ad ptriphe- 

 riam angulato, ban eontexo; colmmelid breriter H 

 talide truncato-dentald, eontortd; aperturd late Irmari, 

 intus margaritaced ; periitomate stperme expanw, bam 

 refvxo, margiiiibus callo tenuitamo jttnetis. 



The oxe-toothed Helix. Shell imperforated, orbicu- 

 larly conoid, striated, sculptured with concmtric 

 wrinkles and obliquely decussated minute lines, dark 

 chestnut : spire obtusely conoid ; whorls six, convex, 

 the last angled at the peripher)", convex at the bue ; 

 columella shortly and strongly one-toothed, twisted ; 

 aperture broadly lunar, pearly within ; Up expanded 

 at the upper part, reflected at the base, margins 

 joined by a %ery thin callous layer. 



CUEMXITZ. ' vol.xi.p. 273.pl. 208. f. 2049-50. 



Helix 1 . Uesbayes. 



Helix teniricosa, Jan. 



Hab. Seychelle Island - 



This species is from tin .-.nut uxaiii_> .l- the pmxding 

 and belongs to the same exact t\p-. The twisted toothed 

 columella indicated in //. > ^<^ 



loped. The dark chestnut I.. by 



a faint band running around the peripberr of each wborl. 



Species 176. (.Mu-«. Cuming.) 

 Helix PYROSTOMA. Hel. tettd imperforald, dtprt-d. 



September, 1851. 



