HELIX.— Plate CXLIU. 



dUdiicte cosliilaio-slriald, sordide albidu, fascia iiiter- 

 rupld riifd el vtaadis fmcU neriatis oniald ; sjjird 

 eUva/d, couicd; atifractibus sex, coiwexiusculii, ultimo 

 obsolete ariffulato, antice nan descendenle ; aperturd 

 rotiiiidato-liiiian ; perislomate acuta, recto, iiiliis sub- 

 labiato, margine coliimellari subdilatato, unUtUicum non 

 occidtante. 



Roset's Helix. Shell unibilicatcd, seiniglobosely couieal, 

 distinctly rib-like striated, dead-white, ornamented 

 with an interrupted red band and brown spots; spire 

 raised, conical; whorls six, rather convex, the last 

 obsoletely slightly angled, not descending in front ; 

 apertui-e rotundatcly lunar; lip sharp, straight, 

 slightly edged inwardly, coluraellar margin subdi- 

 lated, not concealing the umbilicus. 



Micu.iuu, Cat. coq. d'Algcrie, p. 0. pi. 1. f. 17, 18. 

 Helix phalerata, Webb and Berthelot. 



Hab. Algeria, Morea, and Canary Islands. 



A light prettily marked conical species, with a small 

 deep umbilicus. 



Ilelix Jiispida, Jeffrey. 

 Ilab. France, Spain. 



A rather depressed shell, brown-sprinkled about the 

 upper part. 



Species 920. (Mus. Cuming.) 



Helix Orbigxyi. TIel. (eala atigimle umbUicatd, globoso- 

 lurbinatd, sordide alba ; anfractibus qnatnor, convexis, 

 medio obsolete angulalis, irregulariter striatis ; aper- 

 turd rolundatd, Hubampld ; peristomate simplici. 



Oebiony's Helix. Shell narrowly uml)ilieatcd, glo- 

 bosely turbinated, dirty white ; whorls four, convex, 

 obsoletely angled in the middle, irregularly striated ; 

 aperture rounded, rather large ; lip simple. 



Webb and Bektiielot, Synopsis, p. 5!l. pi. 2. f 31-33. 



IlaA. Island of Tencriffe, Canaries. 



A thin white-brown species, with a rather large rounded 

 aperture. 



Species 921. (Mus. Cuming.) 



Helix conspuecata. Eel. testa umhilicatd, depressd, 

 subcarinaid, corneo-cinered, minute variegatd, capil- 

 laceo-coslulatd, /lispididd ; spird vix elevatd ; anfrac- 

 t'dius quatuor ad quinqtic, depressts ; umbilico angusto ; 

 aperturd rotundato-luiiari ; peristomale recto, simplici, 

 acuto, margine columellari vix rejlexiusculo. 



TuE si'HiNKi.i;]) Helix. Shell urabilicated, depressed, 

 slightly keeled, homy-ash, minutely variegated, finely 

 ribbed, hairy ; spire but little elevated ; whorls four 

 to live, depressed; umbilicus narrow; apertui'c ro- 

 tundatcly lunar; lip straight, simple, sharp, colu- 

 niellar margin a little rellected. 



I)u.\i-ARNAUD, Hist. MoU. p. 105. pi. 7. f 23-2.r 



Species 922. (Mus. Cuming.) 



Helix Pompylia. Ilel. testa umbUicatd, supra depressd, 

 subtua coiivexd, suborbiculari, arctispird, corneo-ru/es- 

 cente, sublus alrigis nutculiaque albidis tenuissimis ful- 

 guratiiii radiatd, auperne coslulatd ; anfractibus octo, 

 Ivntisaiiiii accrescentibus, ultimo circa umbilicum erea- 

 vato ; aperturd aubcerticali, aiigusti Imiari ; peristo- 

 mate aubjlexuoso, acuto, aimplici, marginiius callo tenui 

 juiictia. 



The Pomi'YLIa Helix. Shell umbilicated, depressed 

 at the upper part, convex beneath, suborbiculor, 

 close-spircd, radiated licneath with \er\ fine white 

 zigzag streaks and sjjots, finely ribbed at the up|M:r 

 part ; whorls eight, increasing very slowly, the last 

 e.vcavated around the umbilicus ; aperture subver- 

 tieal, narrowly lunar ; lip rather flexuous, shaq), 

 simple, margins joined by a thin callosity. 



SiiuTTLEWonru, Diag. .Mollusken, No. 1. p. U. Mem. 

 Conch, pi. 1. f. 12. 



Hab. Island of Pidma, Canaries. 



Convoluted in a peculiar vertically compressed manner, 

 which ;;ives to the species a very characteristic asjiect. 



Species 923. (Mus. Cuming.) 



H E L 1 X OLE A C E A . Hel. tesld anbobtecte undiilicatd, ienM, glo- 

 bosu-depresm, obtuse cariiiatd, corned, subtililer striata, 

 viuculis brunneis aubserialia striyiaque pallidis omatd ; 

 spird aubelatd ; anfractibus quinque, contexiusculit, 

 sensim accrescentibus; aperturd lunsri-omli ; peristo- 

 mate rejlexiusculo, tenui, acuto, margine columellari 

 subdilatato. 



TuE OLIVE Helix. Shell with a partially covered um- 

 bilicus, thin, globosely depressed, obtusely keeled, 

 horny, finely striated, ornamented with pale streaks 

 and rows of brown s])ols ; spire somewhat raised ; 

 whorls five, rather convex, inca-asing gradually ; 

 aperture lunar-oval; lip a little rellected, thin, sharp, 

 columellar margin somewhat dihited. 



SiiUTTLEWoiiTH, Diag. Mollusken, No. 1. p. 8. Mem. 

 Conch, pi. 3. f. 9. 



Hab. Island of Pahna, Canaries. 



llesenibling JI. Roaeti, both in form and marking, but 

 of a more delicate horny substance. 



