HELIX. 



Plate CXV. 



Species 659. (Mus. Cuming.) 



Helix Dupetithouausii. Ilel. tesld umbilicald, orbi- 

 culato-convexd, lavigald vel subslriald, saturate cas- 

 taned, supenii pallidiore, nigricante-rtifo ciuyulatd; 

 spird conoideo-oblum ; ati/raciibits seplem ad octo, an- 

 gmlis, conveximculis, ultimo injlato ; aperturd ocalo- 

 semilunari, intus albd,fasciatd ; perktomale simplici, 

 brevmime re/lexo, marybte columellari arcuato, superne 

 dilafato-rejlexo, mihilicttm mediocrcm non occuUanle. 



Dui'ETiT-TiioUAiis' Helix. Shell unibQicated, orbicularly 

 convex, smooth or finely striated, dark chestnut, 

 paler at the upper part, encircled with blackish-rcd ; 

 spire coiioitUy obtuse ; whorls seven to eight, narrow, 

 rather convex, tlic last inflated; aperture ovately 

 semilunar, white and banded within ; lip simple, very 

 shortly reflected, columcUar margin arclicd, dUately 

 reflected at the upper part, not concealing the mid- 

 dling umbilicus. 



Desuayes, Kevue Zool. Soc. Cuv. 1839, p. 300. 



Hab. California. 



Belonging to the same type, and closely allied speci- 

 fically, to ll.ftdelin of the preceding Plate. 



Species 660. (Fig. a, i, Mus. Cuming.) 



Helix vincta. Hel. testd obtecie umbilkatd, glohosd, 

 leniii, iiijlatd, oblique subliliter et densinsime ruffuloso- 

 striatd, olivaced, Jlavicante marmoratd, fascia angmta 

 nigricante-funcd supra peripheriam ciuffuhld ; anfrac- 

 tibus quitique, convexis ; aperlurd subcirculari ; ptri- 

 stomate tenui, m/irf/inibus connivenlibus, aupero redo, 

 columellari rcjlexo et dilatato. 



The hard-girt Helix. Shell with a covered umbi- 

 licus, globose, thin, inflated, nblif|uciy finely and verj' 

 closely striated in a somewhat wriniiled raanuer, olive, 

 marbled or freckled with yellow, encircled above the 

 periphery with a narrow black -brown band ; whorls 

 five, convex ; aperture nearly circular ; lip thin, mar- 

 gins approximating, upper margin straight, columel- 

 lar margin reflected and dilated. 



Valenciennes, Voyage de la Venus, Moll. pi. 1. f. 2. 



Hab. California. 



.V globose light inflated shell, finely sculptured with 

 wrinkled sub'Tanulated striic. 



Species CCl. (Mus. Cuming.) 



Helix Californiensis. Hel. testd aiigutH umbilicatd, 

 depresHo-globoid, tenui, rugulotd, granulatd, fuled, 

 luteo-maculatd ; »pird subturbinatd ; anfractibuK ••/.- 

 tern, coiirexiusailis, uttitito supra peripheriam //-ti.: 

 unicd angustd rufd ciiicto, basi injlato; aperturd lu- 

 naio-rotuiidatd, intus alid, unifatciatS; peristomatt 

 intus albo-labiato, rejlexiusculo, margine cvlumellnri 

 dilatato, rejlexo, umbiticum semioccultante. 



The Californian Helix. Shell narrowly mnbilicated, 

 depressiy globose, thin, finely wrinkled and granular, 

 fulvous, yellow-spotted; spire subturbinatcd ; whorl« 

 seven, rather convex, the last encircled witii a 6m;;lf 

 red-brown band above the periphery, inflated at the 

 base; aperture lunar-rounded, white within, one- 

 banded ; lip white-thickened inwardly, slightly re- 

 flected, columellar margin dilated and reflected, half- 

 concealing the umbilicus. 



Lea, Observations, vol. ii. p. 99. pi. 23. f. 79. 



Ilai. California, near Colmnbia River. 



This agrees witli the preceding species both in sculptun- 

 and painting, but differs in form, being composed of more 

 whorls, more closely turbinated. 



Species 662. (Fig. a, 4, Mus. Cuming.) 



Helix SOLITARIA. Hel. testd lati pervio-HmbilicatA, i/h- 

 boso-depressd, solidiusculd, oblique con/rrlim ruijoM, 

 lutesceuti-corned, brunneo-frueiaid ; ai\fractibut sex, 

 convexis ; suturd profunda: aperturd luitato-roluH- 

 datd, intus iiiliJc alljd, fasciatd ; peristomate simpUn. 

 acuto, margine columellari dilatato, subreflexo. 



The solitary Helix. Shell xvith a broad open umln- 

 licus, globosely depressed, rather solid, obli<|Ucly 

 closely wrinkled, yellowish-homy, enrircled with two 

 to three brown bands : whorls six, convex ; suture 

 deep ; aperture hmar-rounded, shining white within, 

 banded ; lip simple, sharp, columellar margin dilated, 

 a little reflected. 



Jay, Journ. Acad. Not. Sci. I'hilndelphin, vol. ii. p. 157. 



Ilab. Missouri, Ohio, North .Vmerica. 



Of a Cgclostoma-WVc form, encircled l)ctwcen the p«n- 

 phery and the suture with thn-e dark burnt-brown h«nd« 



.\ugust, 1852. 



