HELIX. 



Plate XXI. 



Species 66. (Mus. Cuming.) 



Helix puell.\. Hel. testa imperforatd, glohoso-iepreisa, 

 tenui, striatula, non nitente, alia, diaphana ; spird 

 fornicatd ; suturd Uneari ; anfractibtts quatuor, vix 

 cottvexiusculis, rapidi accresceidiiiis, ultimo basi in- 

 Jlato, medio carinato, ad carinam fmco-cingulato ; co- 

 lumella declivi, strict i usculd ; apart urd irregulariter 

 lunari ; peristomate simplici, margine supero expanse, 

 basali rejlexo, cum columellari aiigidatimjuncto. 



The damsel Helix. Shell imperforated, globoscly de- 

 pressed, thin, finely striated, not shining, white, dia- 

 phanous ; spire vaulted over ; suture linear ; whorls 

 four, slightly convex, increasing rapidly, last whorl 

 inflated at the base, keeled round the middle, encir- 

 cled with a narrow brown band at the keel ; colu- 

 mella slanting, rather twisted ; aperture irregularly 

 lunar; lip simple, upper margin expanded, basal 

 margin reflected, angularly joined with the eolumellar 

 margin. 



Carocolla puella, Broderip, Pro.Zool. Soc. 18tl, p. 45. 

 Helix puella, Pfeiffer. 



Hab. Island of Camiguing, Philippines ; Cuming. 



This species is mainly distinguished by a brown band, 

 which only appears in the latter half of the last whorl, 

 increasing gradually in intensity as the shell approaches 

 maturity. 



Species 84. (Mus. Cuming.) 



Helix filakis. Hel. testd imperforatd, depresso-globosd, 

 tenui, striis incrementi validis notatd, aliidd, epider- 

 mide pallide corned, decidud, instructd ; spird parum 

 elevatd, obtusd, apice fused; suturd Uneari, fusco vel 

 albo-marginatd ; anfractibus quatuor, planiusculis, ul- 

 timo obtuse angulato ; columella ohliqud, margine gra- 

 nulosa ; aperturd dilatatd, lunari; peristomate nigro, 

 subiiicrassato, parum expanso. 



The thread-marked Helix. Shell imperforated, de- 

 pressly globose, thin, marked with conspicuous striae 

 of growth, whitish, furnished with a pale horny deci- 

 duous epidermis ; spire but little raised, obtuse, 

 brown at the apex ; suture linear, edged with brown 

 or white ; whorls four, rather flat, last whorl obtusely 

 angled ; columella oblique, grauulous at the edge ; 



aperture dilated, lunar ; lip black, rather thickened, 



but little expanded. 

 Valexcienxes, Pfeiffer, Pro. Zool. Soc. 1845, p. 38. 

 Hab. Island of .Marinduque, Philippines ; Cumin"'. 



The lip of this species is stained with black-brown, and 

 the apex is tinged with the same colour. 



Species 85. (Mus. Cuming.) 



Helix xympha. Hel. testd imperforatd, globoso-dfjtrend, 

 tenui, oblique striatula, nitidd, diapliand, cirenli-aliidd ,■ 

 spird bretissimd, apice obtusd; suturd atio-Jilosd ; an- 

 fractibus quatuor, subplanis, rapidi accrescent ibut, ul- 

 timo subdepresso, basi concexo; columella intraiUe, 

 subverticali, compressd, alba ; aperturd obliqud, lati 

 lunari; peristomate simplici, tenui, castaneo-liinbato, 

 rnargine supero recto, basali breviler reflexo, cum colu- 

 mella angulum obtusum formante. 



The xymph Helix. Shell imperforated, globosely de- 

 pressed, thin, obliquely finely striated, shining, dia- 

 phanous, grceuish-wliite ; spire ver)- short, obtuse at 

 the apex ; suture white-threaded ; whorls four, rather 

 flat, rapidly increasing, the last rather depressed, 

 convex at the base ; columella entering, subvertical, 

 compressed, white ; aperture oblique, broadly lunar ; 

 lip simple, thin, edged with chestnut, upper margin 

 straight, basal shortly reflected, forming an obtuse 

 angle with the columella. 



Pfeiffer, Pro. Zool. Soc. 1S49, p. 129. 



Hab. Philippine Llands. 



This species is but little distinguished from the pre- 

 ceding ; the spire is more elevated, so as to give a de- 

 pression to the suture, and the apex has no tinge of colour, 

 but these differences are of no great value. 



Species SO. (Mus. Cuming.) 



Helix casta. Hel. testd imperforatd, deprettd, supra in- 

 fraque tubaqualiler contexd, carinatd, striatula, un- 

 dique peculiariter malleald, nitidd, sub rpidermidr 

 decidud pallide lutescente-albd ; suturd liueari, ere- 

 taced : anfractibus quatuor, subplanis, ultimo juxta 

 suturani et infra carinam obsolete angulato ; cvluMella 

 breci, declivi, vTrnrdld. Lnsi aulilorld : aperturd sni- 



Mav, 1851. 



