HELIX. 



Plate IV. 



Species 14. (Mus. Cuming.) 



Helix stolepiiora. Hel. testa wmbUicald, suidiscoUleii, 

 sullavigatd, obUque striata, ohtusi angulatd, supvrne 

 depressd, pallidissime carneo-fulvescente, basi convexd, 

 infra angulum fascia rnfd, deorsum pallescente, reii- 

 cukito-slriatd circnmdatd ; atifractibus quatuor, pla- 

 niusculis; aperturd perobliquu, valde depressd ; peri- 

 stomate vix iucrassato, marginilm callo umlHicumfere 

 tegente jmictis. 



The iioBED Helix. Shell urabilicated, subcliscoici, 

 rather smooth, obliquely striated, obtusely angled, 

 depressed at the upper part, very light flesh-brown, 

 base convex, surrounded with a red hami beneath tiie 

 angle, then pale and reticulately striated ; whorls four, 

 rather flat ; aperture very oblique, verj' depressed ; 

 lip scarcely thickened, margins joined by a callous 

 layer, which nearly covers the umbilicus. 



Valenciennes, Voy. Humboldt and Bonpland, Zool. 

 p. 2+2. pi. 56. f. 4. 

 Helix bupldhalmns, Ferussac. 



Hah. New Spain ; Valenciennes. 



Distinguished chiefly by its depressly flattened growth 

 and purplish flesh-brown colouring. 



Species 15. (JIus. Cuming.) 



Helix bulla. Uel. testa subniMUcald, globoso-depressd, 

 lenitissimd, pellucidd, siriis confertis spiralibus et obli- 

 qui» minute decitssatd, subcarinatd, pallide fulm, ad 

 carinam riifo-cingulatd ; si/tiiris vix inipressis ; spird 

 parum exsertd ; anfractibus quatuor, planiusculis ; 

 aperturd lunato-rolundatd, inim iridescente, vnifas- 

 data; peristoma te simplici, niargine supero introrsum 

 flexo, columdlari vix expanso. 



The bubble Helix. Shell sub-ural)ilicated, globoscly 

 depressed, very thin, pellucid, very closely decussated 

 with close-set spiral and oblique stria;, slightly 

 keeled, light fulvous, encircled with a red baiul at the 

 keel ; sutures slightly impressed ; spire but little cx- 

 serted ; whorls four, rather flattened ; aperture lunar- 

 rounded, iridescent and one-banded within ; lip 

 simple, upper edge slightly inflected, coluiuellar edge 

 very little expanded. 



Pfeiffek, Pro. Zool. Soc. 1842, p. 151. 



Hob. Province of Albay, Island of Luzon, Philippines ; 

 Cuming. 



A very slight transparent shell, similar in form and 

 design to //. hepatica. 



Species 16. (Mus. Cuming.) 



Helix exilis. Eel. testa umbilicatd, sufidiicoided, cari- 

 natd, pellucidd, tenerd, pallide fiilcidd, tiiperni de- 

 pressd, argute striatd, subtiis convexiore, strii* hhhiu 

 distinclis ; anfraclibus sex, planiusciUU, uUimo non 

 descendente, fascia anguatd, rufd, infra carinam oriuito , 

 area waiilicali iiderdum rufo-fascd; aperturd lata, 

 eUipticd ; peristomate simplici, acuta, margine eolumel- 

 lari brevissime rejlexo. 



The slender Helix. Shell sub-umbilicated, discoid, 

 keeled, pellucid, lidit, pale fulvous, depressed at the 

 upper part, prominently striated, more convex beneath, 

 with the stria; less distinct; whorls sL\ in number, 

 rather flattened, the last not descending, ornamented 

 with a narrow red band beneath the keel ; area of the 

 umbilicus sometimes reddish-lirown ; aperture broad, 

 elliptical; lip simple, sharp, columellar edge very 

 shortly reflected. 



Muller, Verm. vol. ii. p. 22. 

 Helix explanata, Quoy. 



Hab. New Guinea ; Quoy. Island of Ticao, Philippines ; 

 Cuming. 



The ujiper convex surface of this shell is remarkable for 

 its crowded cnnccntric stria;. 



Species 17. (Mus. Cuming.) 



Helix Zeus. Hel. testa oblique umbilicatd, mbdeprrsto- 

 convexd, solidd, rugis obliquis striisque spiraliiiu tie- 

 valis sculptd, rufd, sirigia albia fuhnitmtit aupenu 

 ornaid; anfractiljits quatuor ad quiuqnf, ' 'imo 



basi convexo, medio anguhito, iifra can ,ro- 



fundis concentricis excacalo ; aperturd prrobliqmi, 

 subtrapeciforiiii ; peristomate aculo, recto, luargiiie coIh- 

 viellari brevi, supra umbilieum rejlexo. 



The il\in-shower Helix. Shell obliquely umbilicatcd, 

 somewhat dcpnssly convex, solid, sculjituivd with 

 oblique wrinkles and raised spind striw, red, onin- 

 mcnted aliout the upiH>r part with ziffZJig streaks; 

 whorls foiu- to Ave, convex, the last convex at the 

 base, angled in the middle, ploughed with deep rnn- 

 ceutric grooves beiumth the keel ; aperture vcr> 



March, 1851. 



