HELIX. 



Plate CLXXVIII. 



Species 1215. (Mus. Pfeifrer.) 



Helix Spratti. lid. leatd lad perspective umbilienta, 

 depressii, coiiferlini coslulald, sordide albd, tel fused, 

 aaiuradug fMco-carinald,carind compresid, prominence, 

 denliculatd ; spird vix elecald ; aiifractibus quinque, 

 supra cariiiam calde iurgidin, snbangulatiiii eletatin, 

 ultimo basi coiwexo, antice non descendeiite ; aperfiird 

 parvuld, atigulalo-mbrotundatd, labro recto, aciito, iiiliis 

 albo-labiato. 



Spratt's Helix. Shell broadly pcrspectively umbili- 

 cated, depressed, closely finely ribbed, dull white or 

 brown, darker-banded, keeled, keel compressed, pro- 

 minent, denticulated ; spire scarcely raised ; whorls 

 five, much swollen above the keel, rather angularly 

 raised, the last convex at the base, not descending in 

 front ; aperture rather small, angularly sub-rounded, 

 lip straight, sharp, white-edged within. 



Pfeifker, Symbolae, vol. iii. p. G9. 



JIal). Malta ; Capt. Spratt. 



Of very peculiar growth, the whorls being swollen above 



the keel and then sunk into a hollow round the suture. 



Species 1216. (Mus. Pfeiffer.) 



Helix costulata. liel. testa umbilicatd, globoso-de- 

 pressd, confer Lim costulata, alltidd vel fusco faaciald el 

 radiatd, vel nigricaiite, basi albo-cincld ; aufracliius 

 quinque, convexittsculis ; aperturd dilataid, lunato-cir- 

 culari, Inbro tenui. 



The finely-uibbed Helix. Shell urabilicated, glo- 

 bosely depressed, closely finely ribbed, whitish or 

 brown-banded and rayed, or blackish, encircled with 

 white at the base ; whorls five, rather convex ; aper- 

 ture dilated, lunar-circular, lip thin. 



Ziegler, Mus. C. Pfeiffer, Xaturg. vol. iii. ]i. :;C. pi. 6. 

 f. 21, 22. 



Helix candidula, var., Rossmiislcr. 

 Helix striatula, Midi. Verm. vol. ii. p. 21. 

 Helix intersecla, Midland. 



Hab. Germany. 



Generally banded or lineated conspicuously with dark 



brown. 



Species 1217. (Mus. Pfeiller.) 

 Helix BICALLOSA. Hel. sulioblecli umbiUcald, semiglo- 

 bosd, tenui, striatuld, rufo-corned, oleoso-micante ; spird 

 convexo-coHoided ; anfraclibus octo, contexiusciiJi.i, ul- 

 timo subcarinato, albido-fasciato, an/ice descendeiite, basi 

 siibplanutalo ; aperturd subquadrato-lunari, intus deii- 

 tibua duoOus callosis armatd, Uibro tame rrfkxo. 



June, 



The bicalloi's Helix. Shell with a nearly covered um- 

 bilicus, seniiglobosc, thin, finely striated, reddish- 

 horny, oil-shining ; spire convcxly conoid ; whorls 

 eight, rather convex, last whorl slightly keeled, whitc- 

 banded, descending in front, rather tlat at the base ; 

 aperture subcpuulratcly lunar, armed within with two 

 callous teeth, lip thinly reflected. 



Frivaldszky, MSS. Pfeiffer, Jfou. Helic. viv. vol. ni. 

 p. 6:58. 



Hab. Siberia. 



A shortly conical globose species, of shining homy sub- 

 stance, composed nf ncnm rous narrow whorls. 



Spccicb 121S. (Mns. Pfeiffer.) 



Helix terrestuis. Hel. letld angutti profundi umbili- 

 I catd, pyramidali-conicd, dense oblique elecalo-striatd, 



opaco-ulbd,fusco spiralilerfasciatd, infra plonald ; an- 

 fraclibus sex, ultimo basi acute carinalo ; aperturd se- 

 curiformi, labro recto, acuto, inlut albo-labiato. 



The terresthial Hklix. Shell narrowly deeply um- 

 bilicatcd, pyramidally conical, densely obliquely clc- 

 vately-striated, opakc white, spirally banded with 

 brown, flat beneath; whorls six, the last sharply 

 keeled at the base ; aperture halchet-shapcd. Up 

 straight, sharp, white-edged within. 



Trochus terrestris, Chemnitz, Couch. Cab. vol. ii. part 2. p. 

 47. pi. 122. f. 1043. 

 Helix terrestris, Fleming. 

 Helix elegans, Gmelin. 

 Helix trochulus, Hartmann. 

 CarocoUa elegans, Lamarck. 



Hab. South of France, Italy, Sicily, and North Africa. 



Though included by some authors in the British fauna, 

 it is not a native of our isles. 



Species 1210. (Mns. Pfeiffer.) 

 Helix NOVEUCA. JM. lesld umbilicatd. coHoideo-deprestd, 

 oblique striata, fulcido-oticaced, medio albizonald, :oHd 

 riifo-inargimitd, siiturd albimarginatd ; anfractibiu 

 quinque ad sex, conrexiusciilis, ultimo antice breriler 

 descendente ; aperturd diagoiialiler rotuudatd, labro 

 appresso-expanso, albidd, marginibiu perapproximalis. 

 The step Helix. Shell nmbilicated, conoidly di-iirossod, 

 obli(iuely striated, fulvous olive, white-zoned in the 

 middle, zone red-edged, suture while-edged; whorls 

 five to six, rather convex, the last shortly descending 

 in front ; aperture diagonally rounded, lip appressly 

 I expanded, white, margins very opproximatcd. 



185I-. 



