HELIX 



Plate LII. 



Species 248. (Mus. Cuming.) 



Helix lychndchus. Hd. ieatd imperforatd, orbiculato- 

 conoided, solidd, fused, um/ique graiiulald ; spird co- 

 HoUfed, obtusd ; suiurd lineari ; anfractibm quinque, 

 subplanulatia, ultimo acute carinato, antice aubitu de- 

 fiexo, infra carinam scrobiculato ; aperlurd aubrkombed; 

 periatomate fuaco, iticrasaato, viarginibm callo crasso 

 junclis, supero vix expanao, baaali dilalato, rejlexo, in- 

 tua hidentato, dentibua intrantibua, antico multo vali- 

 diore. 



The- candlestick Heli.v. Shell imperibrated, orbicu- 

 larly conoid, solid, browTi, granulated throughout ; 

 spire conoid, obtuse ; suture linear ; whorls five, 

 rather flattened, the last sharply keeled, suddenly de- 

 flected in front, furrowed beneath the keel ; aperture 

 subrhoraboid ; lip brown, thickened, margins joined 

 by a thick callous layer, upper margin expanded, basal 

 dilated, reflected, two-toothed within, teeth entering, 

 front tooth much the stronger. 



Mullek, Verm.terr. et fluv. Hist. vol. ii. p. 81. 



Hub. Martinique, Guadaloupe. 



A compact trochiform shell, sharply keeled at the 

 periphcrj-, beneath which part the shell is concave and 

 then rounded. 



Species 2-19. (ilus. Curaing.) 



Helix Isabella. Hel. teatd imperforatd, orbiculari, sub- 

 globoad, latigatd aut minute oblique striata, suturd 

 lineari, fuaco-olivaced, ad peripheriam pallide fasciatd ; 

 apird obtuad ; anfractibua quinque, convexia ; aperturd 

 ovato-limari, coarctatd ; periatomate iiicraaaato, livido- 

 fuaco, marginibua callo jiinctia, mipero introraum dila- 

 tato, baaali aubobacure unidentato. 



The Isabella Helix. Shell imperforated, orbicular, 

 subglobose, smooth or minutely oblir|\ie]y striated, 

 suture linear, brown-olive, faintly banded at the 

 peripherj- ; spire obtuse ; whorls five, convex ; aper- 

 ture ovately lunar, contracted ; lip thickened, livid- 

 brown, margins joined by a callous layer, upper 

 margin dilated inwardly, basal margin rather obscurely 

 one-toothed. 



Fercssac, Hist. Moll. pi. 17. f. i. 



Hab. Barbadoes. 



Tliis is very closely allied to the following species, and 



should probably be referred to it as a variety. 



Species 250. (Mus. Cuming.) 



Helix dentie.vs. Hel. teatd imperforatd, tubgloboaa, m- 

 lidd, oblique atriatd, nigreacente-fuacd ; aulurd lineari . 

 anfractibua quinque, planiuaculia, ultimo tubangutalo, 

 antice gibbo ; aperturd aubhorizontali, coarctatd, traiu- 

 cerae oblongu ; periatomate lati incraaaato, margimi- 

 bua callo junctia, aiipero introraum dilalato, baaali ir- 

 regulariter denticulato. 



The teething Helix. Shell imperforated, subglobose, 

 solid, obliquely striated, blackish-brown; suture 

 linear ; whorls five, rather flattened, the last subangu- 

 lar, gibbous anteriorly ; aperture subhorizontal, wn- 

 traeted, transversely oblong; lip broadly thickened, 

 margins joined by a callous layer, upper margin di- 

 lated inwardly, basal irregularly toothed. 



Ferdssac, Hist. Moll. pi. 43. f. 2, and pi. -IS ./. f. I. 



Hab. Martinique, Guadaloupe. 



Of a more solid robust form than the preivdmg, bm 

 participating in the same characters, one of which worth 

 noting is that the upper margin of the aperture is curved 

 inwardly. 



Species 251. (Mus. Cuming.) 



Helix ORBICCLAta. Hel. teatd imperforatd, auiaemi- 

 globoad, aolidd, atriatd, cirente fused ,- tpird comcfjcd, 

 obtuad; anfractihua quinque ad aex, p' 

 ultimo obaolete angulato, ad peripheriam zoi-.: 

 nigricante-rujia circumdato, baai plahiuaculo ; aperltird 

 perobliqud, lunato-ellipticd ; periatomate incraatato, rr- 

 Jlexo, fu-ico-violaceo, marginiiua calio juHcii*, boMtti 

 obscure lati; tranacerae dentato. 



The orbicular Helix. Shell imi)erforatcd, suhstmi- 

 globose, solid, striated, greenish-brown ; spin- con- 

 vex, obtuse; whorls five to six, nitlicr flaltciuil, iht- 

 last obsoleti'ly angled, encin-led «ilh two iinmiw 

 blackish-red zones at the periphcr)-, rather flat at the 

 base; aperture very obliijuc, lunar " " ' lip 

 thickened, reflected, browni^ih-violel, ; ,inti 



by a callous layer, basal margin obscurely broadly 

 transversely toothed. 



Febussac, Hist. MoU. pi. 47. f. 4. 



Eab. Guyana, Cayenne. 



The lower of the two charncteristu- iiaini>. ninch m- 

 circle this shell, falls below the siitur<>, so thai it i« con- 

 cealed in all but the last whorl 



October, 1S51. 



