HELIX. 



Plate CCH'. 



Species M-34. OIus. Cuming.) 



Helix arcentea. Uel. teitd vLr unUiilicald, acute co- 

 nied, miiiulkmme deciiiiatim slriald, curiied, civU/e 

 ca-3(a)ie/i,/(Mcid h-niii aryeiited epiJcrmiJin ad periphif- 

 riam anfractuum laii cingulald ; spird siiboUusd ; ait- 

 fractibua quinque, concavo-planat'u, ad peripheriam 

 acute anyulato-car'uiatU ; aprrturd mbsecurifonni, la- 

 bro nimplici. 



The silveuy Helix. Shell scarcely umbilicatcd, sharply 

 conical, very minutely decussately striated, honiy, 

 bright chestnut, broadly encircled at the periphery 

 of the whorls with a thin silvcrj' baud of epidermis ; 

 spire rather obtuse ; whorls five, concavely flattcDed, 

 sharply ang;ularly keeled at the periphery ; aperture 

 somewhat hatehel-shapcd, lip siuii)le. 



Ilab. Mauritius ; Barcky. 



A light sharply conical species, of bright chestnut- 

 horny substance, encircled about the periphery, and in 

 some specimens almost wholly enveloped with a thin 

 silvcrj' epidermis-like deposit, distinct in character from 

 any hitherto recorded species, lleceived from Sir David 

 Barclay, of Port Louis, JIauritius. 



Species 1-135. (Mus. Cuming.) 



Helix Sixaitensis. Uel. tatd perampiUer excarato- 

 umbilicatd, orbiciilato-coiicexd, arcuatim dente atriatd, 

 striis elniitU ; spird ohtu-sd, acute vmrg'matd ; aiifrac- 

 tibus septem, concexo-tlecUvibu», ad perip/ieriam cari- 

 natis ; aperturd angulalo-lunari, labro timplici. 



The Sinait Helix. Shell very largely excavntcly um- 

 biJieated, orbicularly convex, arcuately densely stri- 

 ated, stria; raised ; spire obtuse, finely margined ; 

 whorls seven, convexly slanting, keeled at the jjeri- 

 phcry ; aperture angularly lunar, lip simple. 



Pfeiffek, Pro. Zool. Soc. 1M5, p. 129. 



Ilab. Sinait, Province of Ilocos, Island of Luzon, Philip- 

 pines ; Cuming. 

 Singularly distinguished by its very Inrcje and deei)ly 



excavated umbilicus. 



Species 1436. (Mus. Cuming.) 

 Helix destituta. Ilel. lestd subniiipUter profimdi u.n- 

 bilicald, yluboao-depressd , utrin/iild. npaco-nlbd, apice 



December, 



obtuto, corneo ; aii/raclibus quimpie, rolundalia ; aprr- 



turd oblique circulari, labro aiiiiplici. 

 The UESTiTiTE Helix. Shell rather largely deeply um- 



bilicateil, globosely depressed, finely striated, opake- 



white, apex obtuse, horny ; whorls five, rounded ; 



aperture obliquely cireuhir, lip simple. 

 CnABPESTiEii, Pfeifi'er, Monog. Helic. vol. iii. p. 130. 

 Ilai. Abruzzi Mountains, Italy. 



A simple globosely turbinated opakc blue-while shell, 

 with a rather conspicuous umbilicus. 



Sjjccies 1137. (Mus. Saul.) 



Helix FILICOSTA. Uel. testd tuboblecte um'j ' 

 preMO-ijIobusd, regularUer Jilicotta/d, c 

 foicid rufuld dilutd liitei»que ciMguUUd; anfractibiu 

 quatuor ad quinque, concexit, ultimo anlici tubito dr- 

 JUiXO ; aperturd lunato-circulari, labro expanm, intu* 

 iiicroMalo, iiuirginibut approxiiuatis, columella palliili 

 castaneo-roseo tiiictd. 



The THUEAD-ninuED Helix. Shell with a nearly co- 

 vered umbilicus, depressly globose, regularly thread- 

 ribbed, flesh-white, encircled with a faint reiUlish 

 band and lines; whorls four to five, convex, the last 

 suddenly deflected in front ; aperture lunar-circular, 

 lip expanded, thickened inwardly, margins approxi- 

 mating, columella stained with light chcstuut-rose. 



Pfeiffeb, Pro. Zool. .Soc. 1S15, p. 73. 



Ilab. ? 



Beautifully sculptured throughout, after the manner of 

 some of the smaller species of Scalaria, with fine sub- 

 transparent thread-like ribs. 



Species 1138. (Mus. Taylor.) 



Helix Pityonesica. Ilel. letld obtecQ MmbHicald, gUj- 

 bom-tiirbinatd, .^-'■■'■■■■-tl-t, tpiraliirr tulcalo-ttriald, 

 aordide fulcd. / -'d rufuld cinoutald : tpird 



aubol 



lice .^ - ■ , 



tali, labro calloto-rrfifxo, marginibtu tubapproiimatit. 



The Pitvonf.se Hf.i.ix. Shell with a covered uubilicui. 

 globosriy turbinated, nilhiT solid, spirally gnx'^e- 

 striated, dull fulvous, cncircle<l with a narrow red 

 band ; spire mllicr obtuse ; whorls five, convex, the 



1S51. 



