HELIX. 



Plate CLXXVI. 



Species 1195. (Mus. Pfeiffer.) 



Helix scabriuscula. Uel. tenia obtecti umiilicald, (k- 

 pressd, compremi cariiiald, str'mto-rutjona, alblild ; an- 

 fraclibm quaiiwr ad qiiinquv, exucrlk, supra plaiiiila- 

 fis, fiisco-maciilalin, ullimo bad turgido, anlke desceii- 

 dente; aperlurd atigidald, luiiato-Hecurifornii, labro 

 tenui, viargiitibm approximalui, sitpero recto, iasali 

 miblabiato, angidatim rejlexo, columellari dilatato, ap- 

 prenao. 



The rodghish Helix. Shell with a covered umbilicus, 

 depressed, comprcssly keeled, striately rugose, white; 

 whorls four to five, exserted, flattened above, brown- 

 spotted, the last swollen at the base, descending in 

 front ; aperture angular. Innately hatchet-shaped, lip 

 thin, margins approximated, upper margin straight, 

 basal sliglitly edged, angularly reflected, columellar 

 margin dilated and appressed. 



Deshayes, Enc. Meth. vol. ii. p. 130. 

 Helix erycina, Jan. 

 Helij; aeliiiimliua, Philippi. 



Hab. Sicily. 

 I 

 The upper surface of the whorls is peculiarly concavely 



flattened, rendering them keeled and exserted at the edge. 



Species 1196. (Mus. Pfeiffer.) 



Helix Ludovici. Hel. lestd perspective umlilicatd, siib- 

 lenliculari, opacd, calcared ; spird convexd, oblusd ; 

 anfraclihus septem, superis platiimciilis, seijuenlibits 

 convexiiuculis, omnibus acute el subexserli carinalis, 

 ultimo infra carinam compressam coneexo, radiatim 

 sulcata el rude granulalo ; aperlurd fere diagoiiali, 

 rotundato-lunari, labro subexpanso, margine basali ur- 

 cualo, breviler reflexo. 



Louis' Helix. Shell perspcctively umbilicated, some- 

 what lens-shaped, opake, chalky ; spire convex, ob- 

 tuse ; whorls seven, uppermost ratlier flat, the fol- 

 lowing rather convex, all siiarply and rather exsertly 

 keeled, the last convex beneath the couipresscd keel, 

 radiately grooved and rudely granuled ; aperture al- 

 most diagonal, rotundately lunar, lip a little expanded, 

 basal margin arched, shortly reflected. 



Albeus, Zeitsehrift fiir JIalac. 1S52, p. 157. 



Hab. Island of Porto Santo. 



A wrinkle-gmined opake chalky shell, of the form of a 

 Solarium. 



Species 1197. (Mus. Pfeiffer.) 



Helix depbessula. Hel. testa mMUeatd, lentieulari, 

 rugoso-slriatd, lutttcente-aUiidd, compretto-carinatd ; 

 anfraclihus sex, prouiinulis, subplaiiulalis, ullimo ban 

 coneexo, anlice vix descendente ; uiiibilico lata, prr- 

 specliro ; aperturd secnriformi, labro recto, angulalo, 

 tntui labialo, marginibus approximntis. 



The depressed Helix. Shell umbilicated, lens-shapcd, 

 roughly striated, yellowish-white, comprcssly keeled ; 

 wliorls six, rather prominent, rather flattened, the 

 last convex at the base, a little descending in front ; 

 umbilicus broad, perspective ; aperture hatchet- 

 shaped, lip straight, angled, edged within, m.irtrins 

 approximated. 



Parreys, Rossniiisler, Hist. Moll. vol. ix. p. li. i. ..<.■.'. 



Hab. Oran, jUgcria. 



Peculiarly convex at the base, the overhanging keel of 

 the periphery being unusually prominent. 



Species 1198. (ilus. Pfeiffer.) 



Helix platycuela. Hel. testd imperforatd, subgloboid, 

 ea'sio-atbd,fasciis guatuor maeulalis tHterdum cinctd, 

 subtil iter striata; spird ronoided ; ■ • »«(/i. 



que ad sex, concexis, ultimo aiitici ra .aper- 



turd perobliqud, truucato-rolundatd, labro tali rx- 

 panso-rejtexo, albo snblabiato, margine columellari 

 calloso, gibboso. 



The broad-lipped Helix. Shell imperforated, subglo- 

 bose, bluish-white, sometimes encircled with four 

 spotted bands, finely striated ; spire conoid ; whorls 

 five to six, convex, the last vcr}- much deflected in 

 front ; aperture very oblique, truneately rounded, lip 

 broadly expandcdiy reflected, slightly cdgctl with 

 white, coluuii'llar margin callous, gibbous. 



Mexke, Syn. 2nd edit. p. lio. Rossmaslcr, Hist. Nnl. 

 vol. vii. p. 7. f. -113-115, and vol. x. p. 12. (. 59.3. 

 Helix pnrtexta, Jan. 

 Helix Sieana, ear., Philippi. 

 Jfelix sp/urroidea, Philippi. 



Hab. Sicilv. 



.\pril, 1S51. 



