HELIX. 



Plate CXXXl. 



Species 797. (Mus. Curaing.) 



Melix Chiron. Ilel. testa umlnlkaid, depressd, olica- 

 ceo-viricli, pellucido-viirea, nitente ; spirit plaiio-con- 

 cavi'i, stUurd impressd ; atifradibui tribus, convexis, 

 sub lente siipenie arcualim plicatu-Uratii ; aperturd 

 lunalo-circitlari. 



The CiiiRON Helix. Shell umbilicated, depressed, olive- 

 green, transparent glassy, shining; spire flatly con- 

 cave, with the suture impressed; whorls three, con- 

 vex, arcuately plicately ridged at the upper part be- 

 neath tiic lens ; aperture lunar-circular. 



Zonites Chiron, Gray, Pro. Zool. Soc. 1849, p. IGG. 



Hab. Auckland, New Zealand ; Greenwood. 



Of very transparent dark olive-green glassy substance. 



Species 798. (Mus. Cuming.) 



Helix Egesta. Hel. testa late umbilicatd, depressd, in- 

 tense fused ; spird planatd ; utifractibm qiiinqite, ro- 

 tiuidatis, snlcis spiralibiis lirisqiie obliquis decussatis, 

 anfractu ultimo peculiariter descendente ; aperturd lii- 

 naio-circulari ; peristomate simplici, aciito. 



The Egesta Helix. Shell broadly umbilicated, de- 

 pressed, dark brown; spire flattened; whorls five, 

 rounded, decussated with s])iral grooves and oblicpie 

 ridges, last whorl peculiarly descending; aperture 

 lunar-circular ; lip simple, acute. 



Gray, Pro. Zool. Soc. 1849, p. 166. 



Ilab. Auckland, New Zealand ; Dr. Sinclair. 



Distinguished by a peculiar distorted appearance, from 

 the dropping of the last whorl. 



Species 799. (Mus. Cuming.) 



Helix Celinde. Hel. testa vix umbilicald, subdepresso- 

 conicd, fused, oblique tenuissimi; coslelluto-striatd ; an- 

 fractibus quinque, rotundatis ; aperturd lunari ; peri- 

 stomate tenui, margine columellari subrejlexo-dilatato. 



The Celinde Helix. Shell scarcely umljiiicatcd, some- 

 what dcprcssly conical, brown, obliquely very finely 

 rib-like striated ; whorls five, rounded ; aperture lu- 

 nar ; lip thin, columcUar margin somewhat reflectcdly 

 dilated. 



Nanina Celinde, Pro. Zool. Soc. 1849, p. 164. 



Ilai. Auckland, New Zealand. 



The umbilicus, which is extremely small, is nearly con- 

 cealed bv a thinly reflected dilation of the columcllar 



Fig. 800. (Mus. Cuming.) 



This proves to be a variety in fine condition of //. comn 

 figured in the preceding plate. 



Species 801. (Mus. Cuming.) 



Helix Helenensis. Hel. testa latiuimi umbilicatd, 

 plano-discoided, sordidi fused, rufo-varieyala ; tpirrr 

 suturd dislinctd ; anfractibus septvm, rotundatit, ton- 

 gitudinaliler creberrimi costellato-striatit ; aperturd 

 lunato-circulari , parvd, lanwllis duabus angu»li» in 

 pariete aperturati, plurimis minuribus oppositi*. 



The St. Helena Helix. Shell very broadly umbili- 

 cated, flatly discoid, dirty brown, variegated with 

 red ; suture of the spire distinct ; whorls seven, 

 rounded, longitudinally verj" closely rib-like striated ; 

 aperture lunar-circular, small, with two narrow la- 

 mellsc on the body-whorl, and several smaller one* 

 opposite. 



Forbes, Pro. Zool. Soc. 1851. 



Hab. St. Helena. 



A pretty variegated shell, of nearly discoid growth, 

 having the aperture crowded with small kmclla;. 



Species 802. (Mus. Cuming.) 



Helix anguicclis. Ud. testa umbilicald, depretsd, tub- 

 discoided, fuscescente, strigis rujis subremotit onata . 

 spirit suturd impressd; anfractibus quinque, rotun- 

 datis, longitudinaliter tenuissimi costellato-slriaiit ; 

 aperturd subcircutari ; peristomate tenui, margiuibut 

 connirentibus. 



The little snake Helix. Shell umbilicated, depressed, 

 nearly discoid, light brown, ornanienlcd with rather 

 distant red strciiks ; suture of the spin- impn-ssc<l , 

 whorls five, rounded, longitudinally very finely nb- 

 like striated; aperture nearly circular; lip thin, with 

 the margins approximating. 



Helix t/ieta, Pfeifl'er, Pro. Zool. Soc. 1851. 



/fab. New Zialand. 



October, iSJi 



