HF.T.IX.— Plate CXXVI II. 



Eastern Australia, but of more solid structure richly 

 handed. 



Species 773. (Mus. Cuming.) 



Helix subbucata. Uel. testa vix umbiUcatd, depressd, 

 ieiiui, pellucido-corned, arciiatim irri'gulariler rugatii ; 

 anfraclibus sex, plamilatis, ultimo car'mato ; aperturd 

 subtrigono-ovatd, labro simpllci, aciito. 



The FAiNTLY-wiuNKLED IIelix. Shell scarcely umbi- 

 licated, depressed, thin, transparent-horny, arcuately 

 ii-regularly wrinkled ; whorls si.\, flattened, the last 

 keeled ; aperture somewhat triangularly ovate, lip 

 simple, sharp. 



Pfeiffek, Pro. Zool. Soc. 1851. 



Hab. New Zealand. 



A verj' thin, perfectly transparent, bright homy species. 



Species 774. (Mus. Cuming.) 



Helix igniflua. Hel. testa subprofunde umbiUcatd, 

 depressiusadd, arcuatim, striatd, Uneis spiralibas im- 

 pressis sub leute minutissime drcussald, sordide fused, 

 flammis riifis e siiliird oblique divergentibus ; anfmcti- 

 bus quiwjue, plamdatis, ullimo obtuse cariiiato ; aper- 

 turd subcirculari ; perislomate tenui, acuta, marginibus 

 connive?dibus. 



The fike-flowing Helix. Shell somewhat deeply 

 umbilicated, rather depressed, arcuately striated, very 

 minutely decussated beneath the lens with spiral im- 

 pressed lines, dull brown, with red flames diverging 

 from the suture ; whorls five, flattened, the last ob- 

 tusely keeled; aperture nearly circular; lip thin, 

 sharp, with the margins approximating. 



Helix lambda, Pfeiffer, Pro. Zool. Soe. 1852. 



Hab. New Zealand. 



The letters of the Greek alphabet cannot be recognized 

 for sjiecific names ; first, because the use of them for that 

 jjurpose is not in accordance with the established form of 

 nomenclature, and, secondly, because they are frequently 

 used to distinguish varieties. 



Species 77a. (Mus. Cuming.) 



Helix dimorpua. Hel. testd vix umbiUcatd, globoso-dis- 

 coided, tenui, pellucido-fuscescente, maculis riiJIs varie- 

 gatd ; spird plana td ; sulurd impressu; anfraclibus 

 triius ad quntuor, nubliliter cosfettnto-slriatis, ultimo 

 tumido, bast medio concavo ; aperturd verticaliter lu- 

 nari ; perislomate tenui, acuta, margine colunmllari 

 nflcxo-ddat(do. 



The DiMOKPiioL's Helix. Shell scarcely umbilicated, 

 globoscly discoid, thin, transparent-brown, variegated 

 with red spots ; spire flnttcned ; suture impressed ; 

 whorls three to four, finely rib-like striated, the last 



swollen, concave at the l)ase in the middle ; aperture 

 vertically lunar ; lip thin, acute, columcUar marjin 

 reflectedly dilated. 



Pfeiffeu, Pro. Zool. Soc. 1851. 



Hab. New Zealand. 



Being flat at the spire and concave at the base, the shell 

 is convoluted in a manner nearly discoid. 



Species 776. (Mus. Cuming.) 



Helix indistincta. Hel. testd umbiUcatd, orbiculari, 

 nndique oblique confertim nitide costellatd, sordidi oli- 

 vaced; anfraclibus quatuor, convexis, ultimo rotundato, 

 subtus concexo-plano ; aperturd circtdari-ovali ; peri- 

 slomate tenui, reflexo, marginibus connitenlibm, colu- 

 mellari incrassato, dilatato, intus dente oblongo in- 

 atructo. 



The indistinct Helix. Shell umbilicated, orbicular, 

 obliquely closely neatly fiue-ribbed throughout, dull 

 olive ; whorls four, convex, the last rounded, con- 

 vexly flattened beneath ; aperture circularly oval ; lip 

 thin, reflected, margins appro.\iiuating, columcUar 

 margin thickened, dilated, furnished within with an 

 oblong tooth. 



Ferussac, Hist. Moll. pi. 38. f. 1. 



Hab. Island of Haiti. 



A shell of rather soUd growth, neatly obliquely rib-like 

 striated throughout. 



Species 777. (Mus. Cuming.) 



Helix brevipila. Hel. testd umbilicatn, ghboso-depres- 

 sd, pilis breviisimis rigidis quiiicuncuditer dispositia, 

 haud nitidd, saturate bruuned ; spird parum el<frafd, 

 obtusd ; anfraclibus vix quinque, concexiusculis, ultimo 

 rotundato, antice subdijlexo, circa umbilicum angustum 

 subcompresso ; aperturd obliqud, rotundato-lunari, in- 

 tus nitidd ; perislomate tenui, brunnco-carneo, breviter 

 expanso, marginibus conniventibus, columellari subdila- 

 tato-r(flexo. 



The siiOKT-iiAiu Helix. Shell umbilicated, globosely 

 depressed, roughened with very short stilT hairs, dis- 

 posed in rows of five, not shining, verj' dark brown ; 

 spire but little raised, obtuse; whorls scarct^ly five, 

 rather convex, the last rounded, slightly deflected in 

 front, a little compressed around the umbilicus, which 

 is narrow ; aperture oblique, rotundately lunar, shin- 

 ing within ; lip thin, brown-flesh, shortly expanded, 

 margins a])pro\imating, eolumellar margin somcwhni 

 dilalely reflected. 



Pfeiffeu, Pro. Zool. Soc. IS-IO, p. 130. 



Hab. Knst coast of New Holland ; Pr. Stangcr. 



WcU distinguished by its rough covering of minute rigid 

 hairs. 



