HELIX. 



Plate LXVI. 



Species 338. (Mus. Cuming.) 



Helix brevior. Hel. ieald umbilicatd, depresso-orbicu- 

 lari, corned, sutnria impressisj an/raclil/iis quinque, 

 rotundalis, Icecibus ; umbiUco subamplo, perspectivo ; 

 aperturd Imiato-circulari, labro siniplici. 



The shorter Helix. Shell umbilicated, depressly or- 

 bicular, horny, sutures impressed ; whorls five, 

 rouuded, smooth ; umbilicus rather large, perspec- 

 tive ; aperture lunar-circular, lip simple. 



Adams, Catalogue, p. 7. 



Had. Jamaica. 



A small flat horny species, with the whorls so rounded 

 as to give an impressed suture to the spire ; originally 

 named II. depressa by Professor Adams. 



Species 339. (Mus. Adams.) 



Helix apex. Ilel. testa umbilicatd, depresso-orbictdari, 

 subdiscouled, pallide corned, siiftiri^ impressis ; anfrac- 

 tibm quatuor ad quinque, ruiundatis, oblique creber- 

 rime subtilissime cosiulato-slrialis ; umbilico subamplo, 

 perspectivo ; aperturd subcirculari, labro simplici. 



The apex Helix. Shell umbilicated, depressly orbicidar, 

 subdiscoid, pale homy, sutures impressed ; whorls 

 four to live, rounded, obliquely very finely and closely 

 rib-like striated ; umbilicus rather large, perspective ; 

 aperture nearly circidar, lip simple. 



Adams, Contributions to Conchology, No. 3. p. 36. 



Hab. Jamaica. 



Bcautifidly sculptured throughout with a number of 

 very delicate stria;, which encircle the whorls like so many 

 fine rinss. 



Species 3M. (Mus. Cuming.) 



Helix SINCERA. Hel. testd umbilicatd, depressd, tenui, 

 conferlim costulald, cereo-aliidd ; spird plana; an- 

 fraclibua quatuor, convexiusculis ; umbilico laio, per- 

 apectivo ; aperturd subverticali, lunato-circulari ; peri- 

 tlomale simplicissimo. 



The true Helix. Shell umbilicated, depressed, thin, closely 

 finely ribbed, waxen-white ; spire flat ; whorls four, 

 rather convex ; umbilicus broad, perspective ; aper- 

 ture nearly vertical, lunar-circular; lip very simple. 



Adams, Pro. Hist. Soc. Boston, U.S., 1845, p. 16. 



January, 



Hab. Jamaica. 



This little homy species approximates veiy rlosely to 

 n. brevior figured above it. 



Species 341. (Mus. Cuming.) 



Helix BREVIS. IM. fentd umbilicatd, depreuo-orbiculari . 

 albidd, nitente ; spird oblusd ; anfractiltus quatuor ad 

 quinque, convexis, ultimo ii\fra planulato ; umiilico 

 anguslo ; aperturd lunari. 



The short Helix. Shell umbilicated, depressly orbi- 

 cular, whitish, shining ; spire obtuse ; whorls four to 

 five, convex, the last flattened beneath : unibilini« 

 narrow ; a])erture lunar. 



Adams, Contributions to Conchology, No. 3. p. 35. 



Hab. Jamaica. 



Cliiefly distinguished by a peculiar flattening of thr 

 base, and by its shining surface. 



Species 342. (Mus. Cuming.) 



Helix epistyliulum. Hel. testd umbilicatd, coitoidrd, 

 alba, tenuissime striata ; spird concejrd, tumidiiucMtd, 

 suturd impressd; anfractibus sex ad leptem, ultimo 

 subangulato ; uiMlico angusto, prof undo nurrlurd 

 lunari, labro simplici. 



The little capital Helix. Shell umbilicatid, ajiuud, 

 white, very finely striated ; spire convex, rathrr 

 swollen, with the suture impressed ; whorls six to 

 seven, the last rather angular ; umbilicus narrow, 

 deep ; aperture lunar, lip simple. 



Adams, Contributions to Conchology, No. '2. p. 31. 



Hab. Jamaica. 



Tliis little species has some resemblance with the gToup 

 represented in Plate 62, but no direct nflinity. The intenml 

 lamella, which is the typical chnrnctcristic of //. tyfuijf- 

 Hum and all its congeners, is wanting. 



Species 343. (Mus. Cuming.) 

 Helix angustispira. Ilel. testd umbilicatd. ' 

 globosd, pallide corned, teuuusime striata . , 

 texd ; anfractibus quinque ad sex, tuhrotundatit, an- 

 gustis, ultimo tumitliusndo ; nmbUico suhprfjfkndo ; 

 aperturd transverse lunari, labro limplict. 



1852. 



