HELIX.— Plate CLX. 



plana; anfraclihua quinque ad sex, exterioriiiu pr<e- 

 cedentibus ditplo latioribiis, ullimo antice non deicen- 

 dente ; umbiUco mediocri, pervio ; aperliird lunari ; 

 perMomate alio, angulalim rejlexo, margine dextro 

 sinuoso, columeUari arcuato. 



The Lusitanian Helix. Shell umbilicatcd, discoid, 

 olive-brown, rather obliquely closely ribbed ; spire 

 flat ; whorls five to six, the outer whorls twice the 

 width of the preceding, last whorl not descending in 

 front ; umbilicus middling, open ; aperture lunar ; lip 

 white, angidarly reflected, right margin sinuous, co- 

 lumeUar margin arched. 



Pfeiffer, Sjinbolse, vol. i. p. 41. 



Hab. Portugal. 



Of simple discoid form, vcrj' closely and regularly rib- 

 striated over the upper surface. 



Species 1059. (Mus. Cuming.) 



Helix cingulata. Hel. testa, profundi umbilicatd, or- 

 biculato-convexd, grkeo-camea, fusco-unifasciata; an- 

 fractibus quinque, vix convexiusadk, ultimo deflexo ; 

 aperturd perobliqud, suhrotmtdd ; peristomate simplici, 

 acuta, intus aublabiato, marginibus approximatis, supero 

 expanso, basalt reflexo, columeUari dilaiato. 



The girdled Helix. Shell deeply urabilicated, orbicu- 

 larly convex, gi'cy flesh-tinged, encircled with a brown 

 baud ; whorls five, slightly convex, the last deflected ; 

 aperture very oblique, nearly round; lip simple, 

 sharp, slightly edged nithin, margins approximated, 

 upper margin expanded, basal reflected, columellar 

 dOated. 



Studer, Verz. p. 14. Ferussac, Hist. Moll. pi. 68. f. 5 

 and 6. 



Helix Baldeiiais, Villa. 

 Helix colubrina, Jan. 



Hab. Lombardy and the Tyrol. 



A bold Cyclostoma-'&s.t species, encircled at the peri- 

 pherj' with a single conspicuous bright brown band. 



Species 1060. (Mus. Cuming.) 



Helix intermedia. Hel. testa aperte umbilicatd, de- 

 pressd, suborbicnlatd, striata, lulescente-albidd vel rufo- 

 trifasciatd,/asciis lateralibus interruptis ; anfractibus 

 quinque, planiusculis, ultimo antice deflexo ; aperturd 

 subhorizontali, ovato-rotundd ; peristomate rtjlexo, mar- 

 ginilusfere contiguu, basali introrsum dilatato. 



The intermediate Helix. Shell openly umbilicatcd, 

 depressed, nearly orbicidar, striated, yellowish-white, 

 or encircled with tiirce red bands, the lateral bauds 

 being interrupted ; whorls five, rather flat, the last 

 deflected in front ; aperture subhori/.ontal, ovatcly 

 rounded ; lip reflected, margins almost coutinuous, 

 basal margin dilated inwardly. 



Ferussac, Hist. Moll. pi. 68. f. 1 and 2. 



Helix catenulata, Muhlfcldt. 



Helix tetrazona, Jan. 

 Hab. Austria and Lombardy. 



Mostly encircled with three bands, of which the central 

 is the strongest. 



Species 1061. (Mus. Cuming.) 



Helix glacialis. Hel. testa umbilicatd, orbicuMo-con- 

 vexiusculd, apice obtusd, kviter carinatd, lutescente, 

 sordidi variegald, superiie plicato-striatd, subtilistime 

 spiraliter lineatd, rufo-unifasciatd ; anfraclilut quin- 

 que, convexiusculis, ultimo rix deflexo ; umbilicx) me- 

 diocri, pervio; aperturd lunato-rutundatd ; peristomate 

 leviter alio-labiato, margine supero vix erpanto, basali 

 breviter reflexo. 

 The glacial Helix. Shell umbilicatcd,' orbicularly 

 slightly convex, obtuse at the apex, faintly keeled, 

 yellowish, dirtily variegated, plicately striated at the 

 upper part, very finely spirally lineated, encircled 

 with a single red band ; whorls five, rather convex, 

 the last slightly deflected ; umbilicus middling, open; 

 aperture lunar-rounded ; lip faintly white-edged, 

 ujjpcr margin a little expanded, basal shortly re- 

 flected. 

 Thomas, Ferussac, Hist. Moll. pi. 07. f. 2. 

 Hab. Piedmont. 



Plicately striated and grooved, encircled at the peri- 

 ])licry with a narrow band, and obscurely stained through- 

 out. 



Species 1062. (Mus. Cuming.) 



Helix Ziegleki. Hel. iestd late umbilicatd, depressd, 

 suborbiculatd, obtuse subcarinatd, albido-ceesid, inter- 

 rupt'e subtrifasciatd, supeme costulato-plicatd ; an- 

 fractibus quinque, planiusculis, ultimo antice sid/itu de- 

 Jlexo ; aperturd subcirculari ; peristomate labiato, mar- 

 ginibus fere connexis, supero expanso, basali strictius- 

 culo, reflexo. 



Ziegleu's Helix. Shell broadly umbilicatcd, depressed, 

 nearly orbicular, obtusely faintly keeled, whitish- 

 grey, interruptedly thrcc-bandcd, rib-plicated at the 

 upper part ; whorls five, rather Hat, the last suddenly 

 deflected in front ; aperture nearly circular ; lij) 

 edged, margins almost connected, upper margin ex- 

 panded, basal rather drawn out, reflected. 



Schmidt, Itossniiisler, Hist. Moll. vol. iii. p. 4. f. 1.54. 

 Helix strigata, car., Cantraine. 



Hab. Venetian Alps. 



.iVlthough closely approximating to //. strigata both iu 

 form anil sculpture, the whorls of this species are more 

 widely convoluted, and form in consequence a larger um- 

 bilicus. 



