HELIX. 



Plate CLXXXV. 



Species 1277. (Mus. Cuming.) 



IIklix EUSPIHA. Hel. testa latmimi aperli umbilicala, 

 discoided, sericeo-olicaced ; apird plano-depressd ; aii- 

 fraclihm qiiiiique, siilitili/er Jpiiae corniijato-iitriatiii, 

 linein spiralibiis dnit.imti-i ; apertiird obliqui luiiari, 

 labro teutii, marginibm xubapproximatk. 



The prettv-spihed Helix. Shell very broadly openly 

 umbilicated, discoid, silky olive; spire flatly de- 

 pressed ; whorls live, finely densely wrinkle-striated, 

 decussated witL sjjiral lines ; aperture obliquely lunar, 

 lip thin, margins rather approximating. 



Pfeiffek, Pro. Zool. Soc. 1854. 



JIalj. Brazil. 



A silky-olive discoid shell, of nearly transparent sub- 

 stance. 



Species 1278. (ilus. Cuming.) 



Helix Saccata. Hel. testa sbmtrali, vix mnbilicatd, al- 

 bido-corned, pelliwidd, oblique arciiato-stria/d, striis 

 nunwrosh spiralibiis tenuicurriii/atis compictie decws- 

 satd; spird convexd; anfraclibus quinque, plaiio-con- 

 vexis, ad peripkeriam acute carina td ; apertiird rotiin- 

 dato-lunari, mtbobliqud, labro simplici, margiiiibM siib- 

 approximalin. 



The bagged Helix. Shell sinistral, scarcely umbili- 

 cated, whitish-liorny, transparent, obliquely arcuatcly 

 striated, conspicuously decussated with numerous 

 finely wrinkled spiral stria; ; spire convex ; whorls 

 five, flatly convex, sharply keeled at the periphery ; 

 aperture rotundately lunar, rather oblique, lip thin, 

 margins rather approximated. 



Pfeiffer, Pro. Zool. Soc. 1854. 



Hab. India. 



A very characteristic transparent shell, closely decus- 

 sated over the surface, and sharply pressed out into o keel 

 at the periphery. 



Species 1279. (Mus. Cuming.) 



Helix Capitanea. Ilel. testd vix umbilicatd, coiwexo- 

 orbiculari, polito-corned, nitente, siib.i/riald, ad tiilii- 

 ram marginatd ; anfractibm quinque, conrexo-decliri- 

 biis, ad periplieriam carinatis, ultimo supra carinam 

 zonula rufncente-fuscd ciiigulato ; aperturd aubsecnri- 

 formi, labro simplici. 



June, 



The Captain Helix. Shell scarcely umbilicated, con- 

 vexly orbicular, polished-horny, shining, faintly stri- 

 ated, marginated at the suture ; whorls five, convexly 

 slanting, keeled at the periphery, last whorl encircled 

 with a red-brown zone above the keel ; aperture some- 

 what hatchet-shaped, lip thin. 



Pfeiffek, Pro. Zool. Soc. 1854. 



llab. Island of St. Christovnl, Solomon's Group ; Captain 

 Keppell. 



Of a peculiar polished horny substance, looking as if 

 covered with a shiny cuticle. 



Species 1280. (Mus. Cuming.) 



Helix Isabellina. Uel. testd vix umbilicatd, depresso- 

 orbicutari, sitbtus convexd, pellucido-corned, lutescente- 

 albd, nitente, obliqui arcuatim striata, striis minutis- 

 slmis spiralibns decussatd ; spird plano-concexd ; an- 

 fractibus quinque, ad periplieriam acute carinatis; 

 aperturd ovato-securiformi, labro simplici. 



The Isabelline Helix. Shell scarcely umbilicated, 

 dcpressly orbicular, convex beneath, transparent 

 homy, yellowish-white, shining, obliquely arcuatcly 

 striated, decussated with veri,' minute spiral stria; ; 

 spire flatly convex ; whorls five, sharply keeled at the 

 peripherj' ; aperture ovately hatchet-shaped. 



Pfeiffer, Pro. Zool. Soc. 1854. 



Ilab. Ceylon; Thwaites. 



A delicate C(iroco//a-formed species, of a shining subme- 

 tallic transparent texture, which becomes more solid and 

 opake with age. 



Species 1281. (Mus. Cuming.) 



Helix pcrpubascexs. Hel. testd imperforntd, depretio- 

 conoided, solidiusculd, obliqui plicato^triatd, undigue 

 miniili' granulald, purpurascente-castaned, fascia albd 

 cingulatd ; spird obtusd ; anfractibiis sex, rourexis, 

 ultimo obtusi carinato ; aperturd liiHori-oblongd, ho- 

 rlzontali, labro rrflexo, saturati coloralo, ad coUimel- 

 lam calloso-diffiiso. 



The piBPLisH Helix. Shell impcrfomtcd, deprcssly 

 conoid, rather solid, obliquely plicately striated, ctctj- 

 whcrc minutely pranulcd, purplish-chestnut, encircled 

 with n white band ; spire obtuse ; whorls six, convex, 



1854. 



