HELIX. 



Plate XXVUl. 



Species 120. (Fig. a, i, Mus. Cuming.) I 



Helix p.».bjiula. Hel. testa umbilicatd, depresgmitnd, dU- 

 coided, carinaid, teitui, oblique striata, pallidi fulvd, 

 faiciis angmtit rufis circumdatd ; spird vix elatd ; an- 

 fractibus qualuor ad qtiiiique, planus, ultimo ad aper- 

 turam rugoso et angulatim deflexo ; carina acutissimd, 

 alid ; umbilico mediocri, pcrcio ; aperturd horizontali, 

 hnceol/ttd; peristomate iimplici, marginibus junctin, 

 supero expanse, basali lati reflexo. 



The little shield Helix. Shell umbilicated, very 

 depressed, discoid, keeled, chin, obliquely striated, 

 light fulvous colour, encircled with narrow red bands ; 

 spire scarcely raised : whorls from four to five, flat, 

 the last rough and angularly deflected at the aperture; 

 keel verj' sharp, wiiitish ; umbilic\is middling, open ; 

 aperture horizontal, lanceolately ovate ; lip simple, 

 with the margins joined, upper margin expanded, 

 basal broadly reflected. 



Carocolla parmula, Broderip, Pro. Zool. Soc. 1841, p. 38. 



Hob. Islands of Negros and Zebu, Philippines ; Cuming. 



This species is remarkable for its flatly compressed len- 

 ticular form. 



Species 121. (Fig. a, b, Mus. Cuming.) 



Helix La3.4.llii. Hel. testa umbilicatd, depressd, cras- 

 siusadd, lati, fuhescente. brunneo irizonatd et epider- 

 mide albidd hydropliand marmoratd ; spird vix elatd ; 

 anfractibus quatuor ad quinque, planiusculis, ultimo 

 tereli, ad aperturam subito deflexo ,- umbilico mediocri, 

 pervio ; aperturd horizontali, aurifomii ; peristcmate 

 valde incrassato, reflexo, conlinuo, margine supero si- 

 nuoso, impresso, basali obsolete dentcto. 



Lasall's Helix. Shell umbilicated, depressed, rather 

 thick, smooth, fulvous, encircled with three dark 

 brown zones, marbled with whitish hydrophanous 

 epidermis ; spire scarcely raised : whorls four to five, 

 rather flattened, the last lengthened, suddenly de- 

 flected at the aperture ; umbilicus middling, open ; 

 aperture horizontal, ear- shaped ; lip very much 

 thickened, reflected, continuous, upper margin sinu- 

 ous, compressed, basal margin obsolctely toothed. 



Eydoux, Guerin's Mag. de Zool. pi. 115. f. 1. 

 Hi'lix meretrix, Sowprl)y. 



Hab. Island of Luzon, Philippines ; Cuming. 



Vcr\- conspicuously zoned, beneath a light net-work ol 

 epidermis, with a bold open umbilicu-. 



Species 122. (Fig. a, b, c, d, Mus. Cuming.-) 



Helix planilata. Hel. testd umbilicatd, orbieulato-cttM- 

 texd, lentkulari, solidd, laciusculd, albd, fuK0-gri»eu 

 marmoratd et interrupts fasciatd ; spird brevi, obtutd ; 

 anfractibus quinque, plus minus planatts, ultimo trreti. 

 interdum subangulato, antici subith deflexo ; uatbilietj 

 mediocri, pertio ; aperturd horizontali, iategrd. ellip- 

 ticd; peristcmate incrassato, marginibus Jum-iis. tnperc 

 expanso, basali reflexo, unidentato. 



The flattened Helix. Shell umbilicated, orbicularlv 

 convex, lenticular, solid, rather smooth, white, 

 marbled and banded in an interrupted manner with 

 grey-brown : spire short, obtuse ; whorls five in 

 number, more or less flat, the last lengthened, some- 

 times a little angled, anteriorly suddenly deflected : 

 umbilicus middling, open ; aperture horizontal, entire, 

 elliptical; lip thickened, with the margins joined, 

 upper margin expanded, basal margin reflected, one- 

 toothed. 



Lamabck, Anim. sans vert. (Deshayes' edit.) vol. viii. 

 p. 40. 



Helix auriculata, Swainson. 

 Helix papilionacea, Valenciennes. 

 Helix coUapsa, Ferussac. 

 Helix Listeri, Gray. 



Hab. Islands of Mindoro, Luban, Xegros, and Luzon. Phi- 

 lippines ; Cuming. 



This species varies extremely in form, being sometimes 

 very flat and lenticular, sometimes rounded and convex. 

 It is always characterized by the same idea of grey 5p<>cklfd 

 painting. 



Species 123. (Fig. 0,4, Mus. Cuming.) 



Helix PennaNTIaXa. Hel. testd aagiuti umbilicatd. 

 orbiculalo-conoided, acute carinatd, tenui. tlnatuld. 

 irregulariter el leriter malleald, UMicolori, cameo, apice 

 purpurascente ; anfractibus quinque ad sex, rix con- 

 vexiusculis. ultimo antici rix ' «*- 



culo ; aperturd perolliqud, a: ,/. 



June, ISal. 



