HELIX.— Plate CXXXVIII. 



Species 868. (Mus. Cuming.) 



Helix oxytuopis. Hel. testa umbilicatd, depresso-conicS, 

 granulii undique exasperatd, cariiiatd, fumeo-caataned, 

 ban Jtavidd ; auturd lineari; spird elevald, obtuad ; 

 atifractibiis sex, planuUs, ultimo ant ice dejiexo, basi vix 

 concexo, acute carinato, carina subtus sulco distincto ; 

 umiilico anguslissimo, non pervio ; aperlurd subhori- 

 zontali, circtilari ; perislomate simplici, acuta, subex- 

 pan-so, continuo. 



The strongly-keeled Helix. Shell umbilicated, de- 

 pressly conical, sharply granulated throughout, 

 keeled, smoky-chestnut, yellowish at the base ; su- 

 ture linear ; spire raised, obtuse ; whorls six, flat- 

 tened, the last deflected in front, scarcely convex at 

 the base, sharjjly keeled, keel with a distinct groove 

 beneath ; umbilicus very narrow, not open ; aperture 

 nearly iiorizontal, circular ; lip simple, sharp, a little 

 expanded, continuous. 



Lowe, Faun. Mader. p. 57. pi. 0. f. 18. 



JJab. Island of Porto Santo, iladeiras. 



Of the same peculiar dark smoky-brown colour as the 

 preceding species, but roughly grained throughout. 



Species 869. (Mus. Cuming.) 



Helix depaupeii.^ta. ffel. testa umbilicatd, globoso-de- 

 pressd, solidiusculd, rugoso-strintd, obsoletissime granu- 

 latd, sordidc albidd ; spird subelevatd, obtusd ; atifrac- 

 tibus quinque, convexis, ultimo basi convexiore, autice 

 deJlexo ; timbilico angusto, pervio ; aperlurd luiiato- 

 circulari ; perislomate acuta, inlus albo-labialo, mar- 

 ginibus lamind callosd junclis. 



The impoveeished Helix. Shell umbilicated, glo- 

 bosely depressed, rather solid, roughly striated, very 

 obsoletely granulated, dirty white ; spin; slightly 

 raised, obtuse ; whorls five, convex, the last more 

 convex at the base, deflected in front ; umbilicus 

 narrow, open ; aperture lunar-circular ; lip shai-p, 

 white-edged within, margins joined by a callous la- 

 mina. 



Lowe, Faun. Mader. p. 51. pi. 0. f. L 



Hab. Island of Porto Santo, Madeiras. 



Of a dirty olive-white colom-, void of pattern, and rough 

 texture. 



arcualim subtiUter plicato-corrugatd, vireseenle, rugit 

 partim opaco-albit ; anfractibus quatuor, ultimo in- 

 Jlato, medio obtuse carinato; aperlurd Iraiiiverse ovald; 

 perislomate vix incrassato. 



The membuanaceous Helix. Shell imperforated, dc- 

 pressly swollen, ver\' thin, membranaceous, trans- 

 parent glassy, arcuatcly finely plicately wrinkled, 

 greenish, wrinkles partially opake-wiiite; whorls four, 

 last whorl inflated, obtusely keeled in the middle ; 

 aperture transversely ovate ; lip scarcely thickened. 



Lowe, Ann. and Mag. Nat. Hist. 1851, p. 112. 



Hab. Madeira. 



A very transparent glassy riYrww-like species. 



Species 870. (Mus. Cuming.) 



Helix membranacea. Hel. testd imper/oratd, depresso- 

 tumidd, tenuissimd, membranacea, pellucido-vitred. 



Species 871. (Mus. Cuming.) 



Helix Maderensis. Hel. testd umbilicatd, depreud, >ub- 

 lenticulari, solidiusculd, aliido-comed, auperne cotlu- 

 lato-striatd, basi striatuld, l/erigatd, rufo-unifasciatd ; 

 spird vix elecatd ; anfractibus sex, coiivexiusculis, ul- 

 timo carinato, antice subgranulato, tubitb deflexo ; 

 aperlurd perobliqud, circulari ; perislomate simplici, 

 marginibus callo continuo junclis, basali rejlexiusculo. 



The Madeira Helix. Shell umbilicated, depressed, 

 somewhat lens-shaped, rather solid, whitish-homy, 

 rib-like striated about the upper part, finely striated 

 and smooth at the base, encircled with a single red 

 band ; spire but little raised ; whorls six, rather con- 

 vex, the last keeled, faintly granulated and suddenly 

 deflected in front ; aperture very oblique, circular ; 

 lip simple, margins joined by a continuous callosity, 

 basal margin a little reflected. 



AVoon, Ind. Test. Suppl. pi. 8. f. 84. 



Hab. Madeira. 



The spire of this species is somewhat concavely flat- 

 tened. 



Species 872. (Mus. Cuming.) 



Helix abjecta. Hel. testd umbilical^, globoso-conicd, 

 supenie rugoso-slriald, undique minute granulald, so- 

 lidd, rudiusculd, grised, basi obsolete /iisco-uni/asciald ; 

 spird elatd ; anfractibus sex ad septem, convexis, ul- 

 timo carinato, basi convexinscuto, antice subilu deflero ; 

 aperlurd perobliqud, circulari, inlus fusculd ; uuibilieo 

 puncl{formi ; perislomate simplici, cohUhho, brevitfr 

 reflexo. 



TuE NEGLECTED Helix. Shell umbilicated, globosi'ly 

 conic, roughly striated about the upi)cr jiart, mi- 

 nutely granulated throughout, solid, somewhat rude, 



