HELIX. 



Plate CLXXX. 



Species 1235. (JIus. Pfeiffcr.) 



Helix PAUVA. lift, tents. angii«tUmmi umbiticata, tfe- 

 presso-tiirltliiat/i, striatiitii, iiitfitte, sorilitti tiiteHcenti: ; 

 spird conoided, apice aciititinciitd, corned ; aiifractibiin 

 quinque ad Hex, vix convexiimcidd, iittimo ad periphe- 

 riaiii atbo-nnbcdriiinlo ; npertiird liiiiato-circiilari, labro 

 aciito, mart/i/ie cotiniirltari njlexo. 



The small Helix. SlicU very narrowly unibilicatcd, 

 deprcssly turbinated, finely striated, shining, dull 

 yellow ; spire conoid, rather sharp and horny at the 

 apex ; whorls five to six, scarcely convex, last whorl 

 faintly white-keclcd at the periphery ; aperture lunar- 

 circular, lip sharp, columellar margin rellected. 



Parreyss, Pfeitl'er, Mou. Helic. viv. vol. i. p. 4H. 



Hab. Sardinia. 



A small dull yellowish species, encircled round the peri- 

 phery with a narrow whitish zone. 



reniformi, labro calloso, rtfirio, morginibnt calto briri 

 trianijnttiri deiiti/ornii jiinrtiii. 



The wobsi-like IIelix. Shell openly unibilicatcd, or- 

 bicularly discoid, reddish-horny, regularly rib-like 

 striated ; sjiire convcxiy flatti-iicd, suture impressed ; 

 wborls seven, rounded, increasing slowly, the last 

 angled, below the angle slantingly inflated ; aperture 

 kidney-shaped, lip callous, n-flccted, margins joined 

 by a short, angular, tooth-like callosity. 



Parreyss, Pfeiffcr, Symbola;, vol. iii. p. 80. 



Hal). Georgia, Florida, North America. 



A horny discoid shell, so convoluted that the umbilicus 

 is unusually broader in the centre of the last whorl than of 

 the rest. 



Species 123fi. (ilus. Pfeiffcr.) 



Helix insculfta. Hel. lesld iiiiper/oratd, depreud, len- 

 t'wulari, iilriiiqiie (rqualiier coiivexd, acute cariiiafd, 

 solidiild, caslatied, .iiipenii coslidk co/ifertis ei lined 

 spirati carina puralleld insciilptd ; aufractibiiH qninqiie, 

 plania, ultimo basi latvigato, mibtiin rarinam impresad ; 

 columclld deiite bred acuta albo inunild ; aperturd de- 

 presso-securiformi, labro simplici. 



The engraved Helix. Shell imperforated, depressed, 

 lens-shaped, equally convex on both sides, sharply 

 keeled, rather solid, chestnut, engraved on the upper 

 part with line close-set ribs, and a si)iral line parallel 

 to the keel ; whorls five, flat, the last smooth at the 

 base, and impressed beneath the keel ; columella fur- 

 nished with a short sharp white tooth ; aperture de- 

 prcssly hatchet-shaped, lip simple. 



Pfeiffek, Pro. Zool. See. 1815, p. 129. 



Hab. ? 



A small dark Jiolella-i\\A\Ki\. shell, encircled with a 



faintly impressed line above the keel, which is shaqily 



pressed out at the periphery. 



Species 1237. (Mns. Pfeiffcr.) 



Helix voi.voxis. Ifel. lestd aperte umbilirald, orbiru- 

 lari-discoided, nifescente-curned, rei/iilnriter cnntalo- 

 slriatd; spird coiirexu-planatd, nuturd iiupreind ; an- 

 fractibus seplem, rotundatis, len/e accrescent ibim, iit- 

 limo angulato, infra ainjiduni declici-injlatn ; aperturd 



June, 



Species 1238. (Mus. Pfeiffcr.) 



Helix lIirpOCREPIs. Hel. leild nubnperle umbilirata, 

 deprcMa, confertim coiitato-ftriald,nlhidd aut futcula ; 

 spird concexo-ptanafd ; anfracliius quinque ad sex, 

 carinatin, supra ptauo-conrexis, infra decliri-lumidis, 

 uUinio .lubilo de/lexo, pone aperturam scrobiculato ; 

 aperturd horizontali, tubaurifunni, labro re/lexo, an- 

 fraclih penultiuii pariete lamina ocalo-quadrangulari 

 munitd. 



The horse-shoe Helix. Shell rather openly unibili- 

 catcd, depressed, closely rib-like striated, whitish or 

 brownish ; spire convcxiy flattened ; whorls five to 

 six, keeled, flatly convex above, slantingly swollen 

 beneath, last whorl suddenly defleeled, pitted behind 

 the aperture; aperture horizontal, somewhat ear- 

 shaped, lip reflected, wall of the penultimate whorl 

 furnished with an ovately (piadrangular lamina. 



Pfeiffer, Zeitschrifl fiir .Malac. 18 IS, p. U'J. 



Hab. Texas, Xortb America ; Dr. Rocmer. 



Distinguished by a verj' peculiarly developed aperture, 

 the wall of the penultimate whorl being furnished with n 

 lamina of the shape of a horse-shoe. 



Species \iV.1. (Mus. Pfeifler.) 



Helix viroixalis. Ilrl. testa n • ' '/• 



de/ires.m-nrbiculari,rnlrnreo-a! -i- 



«/') ; s/drd brrri, sulurd sMmpressti ; oHfraelibu* 



qninque, rotundatis ; aprrlnrd Ihhu' ' ' ' ' 'ro 



acuto, iutus crasse albilabialo, m i- 

 matls. 

 The maiden Helix. Shell narrowly umbilicaled, snb- 



1851. 



