HELIX. 



Plate CXLI. 



Species 894. (Mus. Cuming.) 



Helix tiiiarella. Ilel. tenia angmtksime wnliUcala, 

 trochiformi, alio et fiiscu turieyutn, liicarinaln, ad sii- 

 turam tuberculaio-pUcatd ; apird conicd, tijiice obtmd ; 

 anfraciibui sex ad sepiem, vltimo haai coiiferlim. et con- 

 cenlrice (/ranulato-sulcato, autice auyiilulii.i. dijlexo ; 

 aperlurd snbhorkontali, circulari ; perktomute ex- 

 paiiso, cont'mno, soluto. 



The little tuudan Helix. Shell verj' narrowly umbi- 

 licatcd, trochus-sliajicd, varie<jatefl ivitli brown and 

 white, two-keeled, tubercularly plicated at the su- 

 ture ; spire conical, obtuse at the apex ; whorls six 

 to seven, the last closely concentrically granularly 

 grooved at the base, angularly tlcllectcd in front ; 

 aperture subhorizontal, circular; lip expanded, con- 

 tinuous, free. 



Webb and Bektiielot, Synopsis, p. .310. D'Orbigny, 

 Moll. Isles Can;u-ies, p. G2. pi. 1. f. 26-28. 



Ilai. Madeira and (^anar)- Islands. 



The shell here represented is dead and discoloured, but 

 characteristic in respect of form and sculpture. 



Species 895. (Mus. Cuming.) 



Helix pacpercula. Tlel. tedd late umliUicatd, siibdis- 

 coided, superne pland rel pariim elevatd, sub leiite mi- 

 nutissime granukitd, yrised, pitnctis fascia aspersd ; 

 atifradibm trilnis ad qnatiiur, supra plauis, ultimo 

 superiie angnlato, busi convexu, ad aperturam circu- 

 larem anguUitim cuarclato; peristomate continuo, acuto, 

 fusco, quasi duplicato. 



The poor Helix. Shell broadly urabilicated, somewhat 

 discoid, flat or but little raised at the upper part, very 

 minutely granulated beneath the lens, grey, sprinkled 

 with brown dots; whorls three to four, flat above, 

 the last angled at the upper part, convex at the 

 base, angularly contracted at the aperture, wliich is 

 circular ; lip continuous, sharp, brown, as though 

 double. 



Lowe, Faun. Mader. p. 47. pi. 5. f. 19. 



Hob. Islands of ^ladeira and Porto Santo. 



The peculiar thickening of the lip behind its sharp edge 

 appears to be constant. 



Species 896. (Mus. Cuming.) 



Helix LESTIOIN(isa. Ilel. testa umbiUcata, rotundato- 

 depressd, infra subplaiiiilatd, mibcarinatd, tenui, macu- 

 tatd H tmhfaxriutd ; tpird conttxo-depreud ; $kturd 

 distinrtd ; aufractiiiu quinque, coiitexiiueulit, tlriatii ; 

 apertiird Iratiiteni ocnli ; peritloiiiate re/lexo, exptuuo, 

 iitarginibiui catlu jnuctit. 



The iRixKLED Helix. Shell umbilicalcd, rotundatcly 

 depressed, rather flattened beneath, slightly keeled, 

 thin, sjiotted and faintly banded with brown ; spire 

 couvexly depressed ; suture distinct ; whorU five, 

 rather convex, striated ; aperture transversely oval ; 

 lip reflected, expanded, margins Joined by a callosity. 



Lowe, I'aun. JIader. p. 49. pi. 5. f. 25. 



Hah. Madeira. 



The colouring of this species in fine condition is a 

 bright chestnut-brown, freckled with opakc-white. 



Species 897. (Mus. Cuming.) 



Helix micbojipuala. Ilel. ttstd aiiguste umbUicald, tub- 

 globosd, virente-corned, pelhicidd, supeme tubobtoUti 

 plicato-striatd, subtus Itnigafd ; anfractibiu sez, lub- 

 atigustis, convexis, ultimo aiitici paululum deflrzo ; 

 aperlurd lu)iato - circulari ; peristomate subexpaiuo, 

 marginibus ronuiveutibus, callo leiiui Junctii. 



The sMALL-UMBiLicis Helix. Shell narrowly umbili- 

 catcd. somewhat globose, greenish-horny, transpnrvnt, 

 somewhat obsoletely phcately striated at the upper 

 part, smooth beneath ; whorls six, rather narrow, 

 convex, the last a little deflected in front . aperture 

 lunar-circular ; lip a little expanded, margins ap- 

 proximating, joined by a thin callosity. 



Lowe, Pro. Zool. Soe. 1S50. 



ffab. Island of Deserte Grande, Madeiras. 



A rounded homy species of simple form, striated above 

 and smooth beneath. 



Species 899. (Mus. Cuming.) 



Helix Aiimitageaxa. Ilel. testd angutti el prrfundi 

 umbiUcatu, drpreaso-globoad, tiretUe-coriud, ftuco pal- 



lidi bifafciulii. ■'"• 



striata, striis ■ , ■ . . . "' 



November, 1852. 



