HELIX.— Plate LXXXVI. 



Species 466. (Fig. a, b, Mus. Cuming.) 



Hklix concisa. Ilel. tedd umbilicaia, depressd, au6- 

 i/ucouled, soitdu, aurantio-riifd, str'mid, aiilcis oilifjuis, 

 subcorrugatis, putidatis, nunc iiilerriiplis nunc dicari- 

 cat'u, incisd ; spird planiusculd, suiurU impresaU ; an- 

 fractihua sex, concexis, uliimu rotundato, antici vix de- 

 Jtexo ; umbilico infundibuliformi, profunda ; aperturd 

 Miqud, lunato-ovali ; perktomate subincrassato, ex- 

 panso, albo, margbdbus callo albo arcuaio conniveniibus. 



I'he cut Helix. SiiuU umbilicatcd, depressed, subdis- 

 coid, solid, orange-red, striated, engraved with ob- 

 lique grooves which are somewhat wrinkled and 

 punctured, now interrupted, now divaricate; spire 

 rather flat, with the sutures impressed ; whorls six, 

 convex, the last rounded, slightly deflected in front ; 

 umbilicus funnel-shaped, deep; aperture oblique, 

 lunar-oval; lip rather thickened, expanded, white, 

 margins approximating, with an arched callous layer 

 between them. 



Ferlssac, Hist. Moll. pi. 78. f. 3, 4. 



Hab. Island of Aroa. 

 This very scarce species is remarkably characterized by 



the vein-like grooves which cross the shell in an oblique 



direction. 



Sjiecies 467. (Mus. Cuming.) 



Helix monozonalis. Ud. testa umbilicatd, orbiculoto- 

 convexd, cenlricosd, nilidd, sttptrni lineU confertis 

 longiludinalibm et transrersU subtilistimi decuuald : 

 caitaned, supra ptripheriam albo-:onatd, infra satura- 

 tiore castaiied, dehule albd ; tpird brevi ; anfraclibut 

 quinque, concexis ; umbilico parvo ; aperturd lunari . 

 perislomate simpliei, margine columellari breviler rr- 

 flexo. 



TuE OiNE-zoNED Helix. Shell umbilicated, orbicukrly 

 convex, veutricose, shining, very finely decussated at 

 the upper part with closc-sct longitudinal and trans- 

 verse lines, chestnut, with a white zone above the 

 periphery, darker chestnut below, then white; spire 

 short ; whorls five, convex ; umbilicus small ; aper- 

 ture lunar ; lip simple, columellar margin shortly re- 

 flected. 



Lamauck, Anim. sans vert. (Deshayes' edit.) vol. viii. p. 2y. 



Hab. Amboyua. 



Very finely granulately decussated from the sutures 

 down to the white band, and smooth and shining 

 below. 



