HELIX. 



Plate XLFV. 



Species 203. (Fig. a, I, Mus. Cuming.) 



Helix sagemox. Hel. testa, obtecte umbilicatd, orbiai- 

 Utto-conteid, craisd, Htr'mtd, luted vel rufeficente,fascik 

 latis nigricantibm varii ortiatd ; spird oblmd ; aiifrac- 

 iiius quinque ad sex, planulatk, ultimo carinato, basi 

 plaii'msculo, atitici g'Mo, dejlexo ; aperturd perobliqud, 

 subtrianyulari ; peristomate incransato, rejlexiusculo, 

 albo vel violaacente-fmco, marginibns callo lato junctis. 



The military cloak Helix. Shell with a covered 

 umbilicus, orbicularly convex, thick, striated, yellow 

 or reddish, variously ornamented with broad blackish 

 bands ; spire obtuse ; whorls five to sL\, flattened, 

 the last keeled, rather flattened at the base, gibbous 

 and deflected anteriorly ; aperture very oblique, 

 somewhat triangular; lip thickened, a little reflected, 

 white or violet-brown, margins joined by a callous 

 layer. 



Carocolla sagemon. Beck, Index, p. 31. 

 Helix marginata, var., Fcrussac. 

 Helix margiiiatoiJes, D'Orbigny. 



Hab. Cuba. 



This species has been frequently confounded with the 

 following, from which it diflers in having the spire less 

 flatly depressed, and the umbilicus wholly or partially 

 covered with the callous extension of the margins of the 

 aperture. 



Species 204. (Shis. Cuming.) 



Helix Bornii. Hel. testa wtdiilicatd, orbiculato-convexd, 

 solidd, oblique riigoso-striatd, acute carinatd, sub epi- 

 dermidv liUescenle decidud albd, fa-sciii duabus latis 

 nigro-castaneis ornatd ; spird obtuxd ; sulurd liueari ; 

 anfractibus quinque, plamnsculis, ultimo antice sub- 

 gibbo, paululum deflexo ; aperturd perobliqud, lunato- 

 elli plied; peristomate incra^sato, albo, njlexo, mar- 

 ginibus callo junctii, columellari dilatato, umbilicum 

 amplum partim tegente. 



Born's Helix. Shell umbilieated, orbicularly convex, 

 solid, oblic|tiely roughly striated, sharply keeled, 

 white beneath a yellow deciduous epidermis, orna- 

 mented with two broad blackish-chestnut bands ; 

 spire obtuse ; suture linear ; whorls five, rather flat, 

 the last rather gibbous and a little dclkcted an- 

 teriorly; aperture very oblique, hmar-clliptic ; lip 



thickened, white, reflected, margins joined by a cal- 

 lous layer, colmncUar margin dilated, partially cover- 

 ing a large open umbilicus. 



Helix Bornii, Chemnitz, Conch. Cab. vol. xi. p. 80. pi. 125. 

 f 1097. 



Helix marginata. Bom. 

 Helix marginella, GmeUn. 

 Helix fasciaia, Blainville. 

 Carocolla marginata, Lamarck. 

 Carocolla unifasciata, Schumacher. 

 Carocolla Lamarckii, Sowerby. 

 Carocolla iiidiscreta, Beck. 



Hab. Porto Eico. 



Chiefly distinguished from the preceding species by its 

 more depressed lenticular form, and open spiral umbilicus. 



Species 205. (Mus. Cuming.) 



Helix Lajipas. Hel. testa imperforatd, subleniiculari. 

 tenuiusculd, rufo-castaned, subtililer striatd, me 



acute carinatd; spird parum eletatd ; anfrc- 



quinque, planiusculis, ultimo antice breviter deflexo, 

 basi contexiore, lineis elecatis obsolete cincto ; aper- 

 turd transversd, subtriangulari, intus nitidi llcidd ret 

 lutescente ; peristomate simplici, vii incrassato, mfo- 

 aurantio, margine dextro expanso, basali reflexo, ap- 

 presso, columellari in callo lato dilatato. 



The lamp Helix. Shell imperforated, somewhat lens- 

 shaped, rather thin, reddish-chestnut, finely striated, 

 indented, sharply keeled : spire but little raisetl ; 

 whoris five, rather flattened, the last shortly deflected 

 in front, more convex at the base, obsolctely encir- 

 cled with raised lines ; aperture transverse, somewhat 

 triangular, shining livid or yellowish within ; lip 

 simple, slightly thickened, red-orange, right niargin 

 expanded, basal reflected, appressod, coluracUar mar- 

 gin dilated into a broad callosity. 



Helix lampas. Verm. terr. et fluv. Hist. vol. ii. p. 12. 

 Helix carocolla, Chemnitz. 

 Helix carina, Wood. 

 Carocolla magna, Schumacher. 

 Discodoma gigas. Swainson. 



Hab. Island of ilayti? 



Tliis fine species is remarkable for it-s broad lenticular 



form and smooth arched spire, the entire surface being 



September, 1851. 



