HELIX.— Plate CXII. 



Species 641. (Mus. Cuming.) 



I[elix Stiieptaxon. Ilel. tesld wnb'dicata, depressa, 

 t/tstaiiter arcuaio-costala el sub Unite mimdmhiie spi- 

 raliler striata, spadiccd, brunneo-tessellatd ; spirdfor- 

 nicttld, superni depressa; anfractUms octo ad tiovem, 

 am/mlis, carinalis, idlimo infra penultimum recedente, 

 ierliam pagiiue infera penultimi partem liberam relin- 

 quente, bast convexiuscuh, radiatim costato, dislinctius 

 concenlrice striata ; umhiUco prof undo, extus laminn 

 horizontali coarctaio ; aperturd depressa, securiformi, 

 lamellis sex intranlibus munitd, duabus in pariele aper- 

 turali, duabus in inargine basali, una in supero, und 

 denilformi in columella; peristomale simplici, recto, 

 acuta, marffine basali retrorsum in laminam umbili- 

 cum coarciautem continuatd. 

 The Stkeptaxis-like Helix. Shell umbOicatcd, de- 

 pressed, distantly arcuately ribbed, and, beneath the 

 lens, very minutely spirally striated, fawn-colour, 

 tessellated with brown; spire arched, depressed at 

 the upper part ; whorls eight to nine, narrow, keeled, 

 last whorl receding below the penultimate whorl, 

 leaving a third of the lower edge of the penultimate 

 whorl bare, base rather convex, radiately striated; 

 umbilicus deep, contracted outwardly by a horizontal 

 lamina ; aperture depressed, wedge-shaped, furnished 

 with six entering lamelhi?, two on the wall of the 

 aperture, two on the basal margin, one ou the upper 

 margin, and one tooth-shaped on the columella ; lip 

 simple, straight, shaqi, basal margin continued back- 

 ward into a lamella contracting the umbilicus. 

 Pfeiffer, Pro. Zool. Soc. {H.coarelala) 1819. p. 129. 

 Hab. Tahiti. 



A singularly-formed species, characterized by the pecu- 

 liarly contracted growth of the last whorl. 



Species 642. (Mus. Cuming.) 

 Helix LIVIDA. Hel. testd ttmbiUcatd, conicd, tenni, stria- 

 luld, fusca-corned, diaphand ; spird conicd, oitusius- 

 culd ; atifractibus sex, convexiusculis, ultimo basi ven- 

 troso, supra medium carinato ; aperturd rotundato- 

 lunari ; perislomate simplici, acuto, recto. 

 The livid Helix. Shell umbilicated, conical, thin, finely 

 striated, brown-horny, diaplianous ; spire conical, 

 rather obtuse ; whorls six, rather convex, the last 

 swollen at the base, keeled above the middle ; aper- 

 ture rotundatcly lunar; lip simple, sharp, straight. 

 Slenopus lividiis, Guilding, Zoological Journal, vol. iii. 



p. 528. pi. (suppl.) 27. f. 1-3. 

 Ilab. Island of St. Vincent, 'West Indies. 



A transparent horny shell, of extremely simple and re- 

 gular growth. 



Species 643. (Mus. Cuming.) 



Helix eadiella. Ilel. testd umbilicald, depressa, su6- 

 discoided, spadiced, rufo-fusco undii/uejlammatd ; spird 

 oblusd ; suturd impressd ; anfractibus qumijue, rolun- 

 dalis, costellato-striatis ; aperturd rotundalo-lunari, 

 labro simplici, acuto. 



TuE kayed Helix. Shell umbilicated, depressed, some- 

 what discoid, fawn-colour, flamed througbout with 

 red-brown ; spire oljtuse ; suture im])ressed ; whorls 

 five, rounded, rib-like striated ; aperture rotuudately 

 lunar, lip simple, sharp. 



Pfeiffer, Pro. Zool. Soc. 1843. p. 125. 



Uab. Island of Opara, Pacific Ocean ; Cuming. 



-V flatly-compressed Ci/clostoina-\ike species, very prettily 

 marked throughout with waved red ravs. 



Species 644. (Mus. Cuming.) 



Helix vortex. Hel. testd angusle umlilicatd, connexo- 

 discoided, lii/aliiid ; anfractibus quinque ad sex, con- 

 vexiusculis, angustis, obsolete striatis, ultimo subam/u- 

 lata, plerumque deorsum deciuto ; aperturd lata, lu- 

 nari ; peristomale simplici, acuto, margine columellari 

 rtjlexiusculo. 

 The whirl Helix. Shell narrowly umbilicated, con- 

 vexly discoid, hyaline ; wliorls five to six, rather con- 

 vex, narrow, obsolctely striated, the last slightly an- 

 gled, generally turned downwards ; aperture broad, 

 lunar; lip simple, acute, columellar margin slightly 

 rertected. 

 Pfeiffer, in AViegman's Archives, 1839, vol. i. p. 351. 

 Hab. Islands of Cuba and Santa Cruz. 



Of a bght hyaline substance, very minutely striated be- 

 neath the lens. 



Species 645. (Mus. Cuming.) 



Helix Cuiliensis. Hel. testd umbilicald, globoso-deprcssd, 

 tenia, peltucidd, fusco-corned, sub lente nigosd et miiiu- 

 tissime graniilald ; anfractibus quatuor, conrexis ; urn- 

 bilico mediocri, pernio; aperturd subcirculari ; peri- 

 slomate simplici, acuto, marginibus approximatis. 



The Chili Helix. Shell umbilicated, globosely de- 

 pressed, thin, pellucid, brown-horny, wrinkled ami 

 very minutely granulated beneath the lens ; whorls 

 four, convex; umbilicus middling, open; apcrmrc 

 nearly circular; lip simple, sharp, with the margins 

 approximated. 



MiitLFKLDT, in Anton, Vera. p. 36. 



Hab. Valparaiso (under stones) ; Cuming. 



A small horny Ci/clostoma-\ikv shell, \CTy minutely 

 wrinkled aud granulated. 



