HELIX.— Plate CLXXV. 



A subtraiisparcnt olive-liornv species, but little umbili- A species of simple character, allied in form to the Eu- 



cnted, with a thin simple lip. 1 pean U. nemoralU. 



Species 11S9. (Mus. Pfeiffcr.) 



Helix Tkenouelleonis. Uel. iesUl ungusti umbilicald, 

 depressd, rude atriald, sub epidtn-mide olivaceo-fuscd, 

 albidd, fancid ru/d cingulald ; anfractibus quatuor ad 

 quinque, planiusculk, cekriler accrescenlibus, ull'uiio 

 depreum, antke dfjkxo, basi paulo convexiore, lavigatd; 

 aperlurd perobliquu, subcirculari, labro breciler ex- 

 panso, inlus rufo-labialo, viargiiiiiits perapproxiinatis, 

 callo teniii junclis, columeUari dilatato, rejlexo. 



The Tkenquelleon Helix. Slidl narrowly umbilicated, 

 depressed, rudely slrinled, white, cueirclcd with a red 

 baud, beneath an olive-browu epidermis ; whorls four 

 to five, rather flat, incrcasiuf; (juickly, the last de- 

 pressed, dclleeted in front, a little more convex at 

 the base, smooth ; aperture very oblique, nearly cir- 

 cular, lip shortly expanded, red-edged within, mar- 

 gins very approximated, joined by a thin callosity, 

 columellar margin dilated and reflected. 



Gratelolp, PfeiU'cr, Zcitschrift fiir Malac. 1850, p. 13. 



llab. Cordova, Argentine Republic. 



A European form, but distinguished by characteristic 

 detail. 



Species 1190. (Mus. Pfeiffer.) 



Helix alabastrites. Hel. testa imperforatd, depresso- 

 globosd, subiililer striata, nitldn, albd,fascili quinque 

 pallide cinctd ; spird convexu, obtusd ; anfractibus 

 quinque, planulatis, lente accrescenlibus, ultimo com- 

 presso, obnoletc angulalo, antici subilo valde dejlvxo ; 

 apifrlurd fere horisonlali, angusld, lunato-ovali, labro 

 iiitus labiato, niarginibus approximatis, callo ienui 

 jmwtis, dexlro arcuato, expanso, columeUari strictius- 

 culo, introrsum vix dilatato. 



The alabaster Helix. Shell imperforated, depressly 

 globose, finely striated, shining, white, sometimes en- 

 circled with five pale brown bands ; spire convex, 

 obtuse; whorls five, rather flat, increasing slowly, 

 the last compressed, obsolctely angled, suddenly 

 much deflected in front ; aperture nearly horizontal, 

 narrow, lunar, lip edged within, margin ajiproxinia- 

 ted, joined by a tliin callosity, right margin arched, 

 cxjianded, columellar margin rather drawn out, a 

 little dilated inwards. 



MiciiAUD, Cat. Mull. d'Alger. Pfeift'er, Mon. llelic. viv. 

 vol. i. p. 27;i. 



//ab. Nortli Africa. 



Species 1191. (Mus. Pfeiffcr.) 



Helix MISa. Jlel. tesid subobtecti umbilicald, conoideu- 

 depressd, solidd, oblique striata, fulcd, superni faacii* 

 duabus latiuscidii nigricantibus terlidque aiiguntd ad 

 carinain cinctd; spird contexo-conoided, obtusd ; an- 

 fractibus quinque, vix contexis, ultimo carinato, antici 

 vix deflexo, basi subplanato, luted, fascid unicd nigri- 

 canle ; aperlurd perobliqud, subrhombeo-hinari, labro 

 Candida, incrassaio, reflexo. 



The teat Helix. Shell with a nearly covered umbilicus, 

 conoidly depressed, solid, oblicpiely striated, fulvous, 

 encircled at the upper part witli two rather broad 

 blackish bands, and a third narrow one at the keel ; 

 spire convexly conoid, obtuse ; whorls five, scju-cely 

 convex, the last keeled, slightly deflected in front, 

 rather flattened at the base, which is yellow, with 

 one black band ; aperture very oblique, subi'homboid, 

 lunar, lip white, thickened, rcllcctcd. 



Pfeiffer, Zcitschrift fiir Malac. 1852, p. 92. 



Hab. Cuba. 



It is extremely doubtful whether this is anything more 



than a variety of H. Bornii. 



Species 1192. (ilus. Pfeiffer.) 



Helix deflexa. Hel. testa angusti umbilicald, depresso- 

 globosd, solidiusculd, oblique striata, albidii, fusco ob- 

 solete cingulald el maculatd ; spird breci ; anfractibus 

 quatuor ad quinque, planiusculis, ultimo antici valdi 

 deflexo, basi planulalo ; aperlurd lunato-ovali, coarc- 

 tatd, labro expanso, niarginibus approximatis, callo 

 Junclis, columeUari redo, elecato, umiilicum fere te- 

 gente. 



Tue deflected Helix. Shell narrowly umbilicated, 

 depressly globose, rather solid, obliquely striated, 

 whitish, obsolctely encircled and spotted with brown ; 

 spire short ; whorls four to five, rather flat, the last 

 very much deflected in front, nithcr flat at the base ; 

 aperture lunar-oval, contracted, lip expanded, mar- 

 gins approximated, joined by a callosity, columellar 

 margin straight, erect, almost covering the umbilicus. 



Pfeiffer, Zcitschrift fiir Malac. 1815, p. 153. 



Hab. Cuba. 



The lip of this species is unusually deflected on the 

 body-whorl, causing the aperture to be contracted and 

 the margins ajiproxinuited. 



