HELIX.— Plate CCX. 



Hub. West Pennsylvania, United States. 



A subpeUucid narrow-whorled depressed species, with a 

 rather deep suture, allied to II. lit/era. 



Species 1492. (Mus. llanley.) 

 Helix ciiiorotic.\. Hel. testa subampUter profuiule 

 itnibUicatd, orbiculato-concexd, teiiiticuUi, cirencenie- 

 luted, supenie dense reticulatim oblongo-granulald, in- 

 fra leevigatd, nileiik ; spird hmiter coiioideu, apice 

 pecuUariter concavo-oblusd ; aiij'ractibus qu'mqiw, ro- 

 tundatis; aperturu lunato-circulari, labro simplici, 

 aniiulo calloso albo interno. 

 The greenish Helix. Shell rather largely deeply um- 

 bilicated, orbicularly convex, rather thin, greenish- 

 yellow, closely rcticulately oblong granulated at the 

 upper part, smooth and shining beneath; spire shortly 

 conoid, peculiarly coneavely obtuse at the apex ; 

 whorls live, rounded ; aperture lunar-circular, lip 

 simple, with a white callous ring within. 

 I'l-'EIKEER, Zeitschrift I'iir Malac. IS.'jl, p. 127. 

 Hab. Grecian Archipelago. 



This is a most distinct and characteristic species, the 

 upper half of the shell being densely rcticulately oblong- 

 granulated, the pattern suddenly ceasing at the periphery, 

 below which it is smooth and highly polished. 



Species 1493. (Mus. Wollaston.) 



Helix .mcstelina. Hd. testa anijuste umbilkatd, pyra- 

 midali-conicd, midique dense rugoHO-granulatd, mus- 

 lelind, nigro-fuscofasciatu; spird ehvald, apice obtusd; 

 anfractibm septeni, convexis, obsoled obtuse cariiiatis ; 

 aperturd hinnto-circiilari, labro simplici, xiibexpaiiso. 



The tawny Helix. Shell narrowly unibilicated, pyra- 

 midally conical, everywhere densely roughly granu- 

 lated, tawny, banded with black-brown ; spire raised, 

 obtuse nt the apex ; whorls seven, convex, obsoletely 

 bluntly keeled ; aperture lunar-circular, lip simple, a 

 little expanded. 



Lowe, Pro. Zool. Soc. 185-I-. 



J/ai. Porto Santo, Madeira. 



A pyramidally conoid tawny-brown species, roughly 



granuled throughout, and encircled with black-brown linear 



bands. 



Species 1 194. (.Mus. W'ollaston.) 



Helix scbcallifera. IM. teifS cut umbilicatd, conoi- 

 ded, obtuse pyratiiidali, ruguloso-granulald, obliqui 

 dense plicato-striatd, fuscescente-alid, juxia mlurnm 

 fatco obsoleti fasciatd ; aiifractibns sex ad septt-in, coa- 

 eexis, ultimo antice defiexo ; aperturd iHuato-circHlari, 

 horbontali, labro subexpanso, marginHiu approximalis, 

 colunwllari subcalloso-dilatato. 



The subcallous Helix. Shell scarcely umbilicatcd, 

 conoid, obtusely ])yraniidal, rugulosely granulated, 

 obliquely densely plieately striated, brownish-white, 

 obsoletely banded next the suture with brown ; 

 whorls six to seven, convex, the last deflected in 

 front ; aperture lunar-circular, horizontal, lip a little 

 expanded, margins approximated, coluraellar margin 

 sligiitly callously dilated. 



Lowe, Pro. Zool. Soc. 1854. 



Hab. Porto Santo, Madeira. 



Of a shorter pyramidally conoid form than the preceding 

 species, with a slight callously dilated reflexion of the co- 

 lumcllar margin. 



Species 1495. (Mus. Metcalfe.) 



Helix glouulakis. Hel. testd imperforatd, conico-glo- 

 bosd, tumidiusculd, oblique tenuistriatd, atriis spirali- 

 bus minutis impre-ms deaissald, albd, fasciis lineisque 

 maculatis aurantio-fuscis cingulatd ; anfractibus quin- 

 que, convexis, ultimo antice mbito deflexo ; aperturd 

 litnato-circulari, parviusctild, contracld, perobliqud, 

 labro leniie rijlexo, ad columellam culloso-arcnato. 



The globular Helix. Shell imperforated, conically glo- 

 bose, rather swollen, obliquely finely striated, decus- 

 sated wiiliminutc impressed spiral striie, white, en- 

 circled with orange-brown bands and blotched lines ; 

 whorls five, convex, the last suddenly deflected in 

 front ; aperture lunar-circular, rather small, con- 

 tracted, very oblique, lip thinly reflected, callously 

 arched at the columella. 



ZiEGLER, Kossuiiisler, Hist. JIoll. vol. vii. p. 7. f. 442. 



IM. Sicily. 



Verj- closely allied to H. Sicana, and scarcely more tlian 

 a variety of that species. 



