HELIX. 



Plate XCFV. 



Species 510. (Mus. Cuming.) 



Helix Gussoniana. Hel. teatd umbilicatd, conico-fflo- 

 bosd, soUda, dislincli minutmimi reticulald, fulvei- 

 cente-albidd, fasdis ca-itaneo-ntfa ornatd ; spird ele- 

 tatd, comided ; anfracliius quinque, convexis, ultinw 

 vix descendente ; columelld arcuatd ; aperturd rolun- 

 dalo-lunari, inius nilidd ; peristomaU: subsimplici, 

 margine dextro vix expansiusculo, columeUari dilalato, 

 rejlexo, iimbilicum fere tegente. 



Gusson's IIeli.x. Shell umbOicated, conically globose, 

 solid, distinctly very minutely reticulated, fulvous 

 white, ornamented with five chestnut-red hands ; 

 spire raised, conoid ; whorls five, convex, the last 

 scarcely descending ; columella arched ; aperture 

 rotundately lunar, shining within ; lip rather simple, 

 right margin but little expanded, eolumellar margin 

 dilated, reflected, almost covering the umbilicus. 



SiiiTTLEWOKTH, I'feittor, Symbola", vol. iii. p. 71. 



Hah. Vicinity of Naples. 



The bands of this species are of irregular width, irregu- 

 larly spaced, and sometimes partially interrupted. 



Species 511. (Fig. a, b, Mus. Cuming.) 



Helix Mazzcllii. Hel. obtecti umbilicatd, globoso-co- 

 nicd, tenui, cuatulato-rugosd, pallide fulveacente, nigri- 

 cante-fmco interdum quinquefasciatd ; spird conicd, 

 acutiiisculd ; anfraciiius quatuor, convexiusculis, ra- 

 pide accrescetttibits, ultimo matjno, injlaio ; aperturd 

 ampldjfere circulari; peristoinate simpUci, marginiltm 

 callo tenui nitido junciis, supero patulo, basali reflexo. 



Mazzulli's Helix. Shell with a covered umbilicus, 

 globoscly conic, thin, finely rib-like wTinkled, light 

 fulvous, sometimes encircled with five blackish-l)rowu 

 bands ; spire conic, rather sharp ; whorls four, slightly 

 convex, increasing rapidly, the last large, inflated ; 

 aperture large, almost circular ; lip simple, margins 

 joined by a thin shining callosity, upper margin 

 spreading, basal reflected. 



Jan, Jlantissa, p. 1 ; Philippi, Enum. Moll. p. 126. pi. 8. 

 f. 8. 



Hel'u crispala, Costa. 

 Helix ritirugin, Cantraine. 



Hab. Sicily, on the mountains round Palermo. 



This species is closely allied, in respect both of form and 



painting, to our common //. atpersa, but differs in being 

 of lighter structure, and in having the surface covered with 

 fine close-set rib-like striic. 



Species 512. (Mus. Cuming.) 



Helix llcorlm. Hel. tetld tubobtecti umiHicala, ijlo- 

 bosd, substriatd, lineis minutisMimit tubdectusatu, rnt- 

 taneo late fasciatd et remoti atrigatd ; anfractibu* 

 quinque, convexiusculis, ultimo infiato, antici breciUr 

 descendenle ; aperturd lunato-rotundatd, inlut mlidd ; 

 peristontate obtusalo, simplici, fusco, marginibM catlo 

 tenuissimo junctig, columeUari dilatato, lati rrflrxo, 

 umbilicum fere tegente, basali slrictimculo, subcattr^tu. 



The Helix of the woods. Shell with a nearly anintl 

 umbilicus, globose, finely striated, slightly decus'^-itcd 

 with minute lines, broadly banded and remotely 

 streaked with chestnut ; whorls five, rather convex, 

 the last inflated, shortly descending in front ; aper- 

 ture lunar-rounded, shining within ; lip obtuse, sim- 

 ple, brown, margins joined by a very thin callosity, 

 columeUar margin dilated, broadly reflected, ainiust 

 covering the umbilicus, basal margin rather dniwn 

 out and somewhat callous. 



LiNN.-EUS, Syst. Nat. (12th edit.) p. 12i7. 

 Helix mulata, Lamarck. 



Hab. Italy, Turkey, Syria. 



This is the largest s])ccies inhabiting Europe. It is 

 mostly of a dark mottled chestnut within and without, 

 encircled by a narrow light band. 



Species 513. (Mus. Cuming.) 



Helix aspersa. Hel. testa imperfurald, coiioidfCMfloioia, 

 rugulcso-malleatd, tenui, griseo-lutescente, fatciit rnnU 

 castanets flammuliaque flaridis ontald ; ipird breci. 

 conoi/led ; anfractibus quatuor, coHcexiuaculit, ultimo 

 ceiitroso, antici subith deflexo ; eolnmeUd otliqud, 

 leciler arcuatd, alba ; aperturd tuHalo-orali ; prrtslo- 

 mate acuta, expamo, breriler rejlexo, marginibiu roH- 

 nicrntibus, columeUari dilatato. 



The sprinkled Helix. Shell impcrfomted, rtmoidly 

 globose, finely roughly indented, thin, greyish-yillciw, 

 ornamented with various chestnut bands and mIIow 

 flames ; spire short, conoid ; whorls four, slightly 

 convex, the last vcntrieose, suddenly dcflerte<l iii 



.\pril, l'^52. 



