HELIX— Plate CLVIIT. 



Hab. New Zealand. 



A small, (lull brown, shining, glassy-looking shell. 



Pig. 1041. (Mus. Cuming.) 



The shell here figured proves to be a large unspotted 

 variety of H. microdonta, represented at PI. CXX. Sp. 705. 



Species 1042. (Mus. Cuming.) 



Helix NITIDA. Uel. tenia aperti umbilicatd, (jlohono-de- 

 presad, striata, corned, pellucidu, niteitle ; anfrarjihiis 

 quinque, convexiusculis, nltimo tereti, circa nmbilicum 

 excavalo; aperturd lunato-circidari ; peridomate ieiiiii, 

 acuta, margine basali, arcitato. 



The shining Helix. Shell openly umbilicated, glo- 

 bosely depressed, striated, horny, transparent, shin- 

 ing ; whorls five, rather convex, the last terete, exca- 

 vated around the umbilicus ; aperture lunar-circular ; 

 lip thin, sharp, basal margin arched. 



MuLLER, liist. Nat. Verm. vol. ii. p. 32. 

 Helix liicida, Draparnaud. 

 Zoniles lucidm. Gray. 



Hab. Europe and the British Isles. 



A small subdepressed homy species, rather excavated 

 about the umbilicus. 



Species 1043. (Mus. Cuming.) 



Helix tkiauia. Hel. testa perspectivi umbilicatd, parvd, 

 depressd, cornea, eleganter costulatd ; spird coiicexd, 

 obtuiiusculd ; anfraclibus sex, coiwexittsculis, lente ac- 



crescentibus, ultimo sttpemi angulato, tublus aftenualo ; 

 aperturd perul/li'jud, sinuosd; perislomate re/lexo, labi- 

 ato, margine exteriore expanso, intus loiidentalo. 



The reseuve Helix. Shell perspcctively umbilicated, 

 small, depressed, homy, elegantly fine-ribbed ; spire 

 convex, rather obtuse ; whorls six, rather convex, 

 slowly increasing, the last angled at the upi)er part, 

 attenuated beneath ; aperture ver)' oblique, sinuous ; 

 lip reflected, edged, outer margin expanded, one- 

 toothed within. 



Frivaldsky, Kossmiisler, vol. x. p. 13. f. Gil. 



Hab. Banat, Hungarj'. 



The riblets of this species are thin and distant, and have 

 the appearance of being merely epidermal. 



Species 1044. (Mus. Cuming.) 



Helix excavata. Hel. testa late aperti umbilicatd, de- 

 pressd, teiiui, striata, pellucido-corned, nitente ; spird 

 paruni elecatd ; anfraclibus quinque, convexiusculis, 

 lente accrescent ibus, vUimo non descendenie ; aperturd 

 ohliqud, subcirculari ; perislomate lenui, simplici. 



The excavated Helix. Shell broadly openly umbili- 

 cated, depressed, thin, striated, transparent homy, 

 shining ; spire but little raised ; whorls five, rather 

 convex, increasing slowly, the last not descending ; 

 apertiu-c oblique, nearly circular ; lip thin, simple. 



Be.\N, ./Vlder. Mag. Zool. and Bot. vol. ii. p. 107. 

 Zonites excavatus, Gray. 



Hab. British Isles. 



Closely allied to H. lucida, but more broadly and largely 

 umbilicated. 



