HELIX.— Plate CIII. 



The ^aiiules are in this species developed into scales, 

 as on the surface of a coarse file, from which short bristles 

 are emitted. 



Species 572. (Mua. Cuming.) 



Helix monile. Ilel. lesld ht'mime umbilicatd, suidis- 

 coided, supeme inipressd, tenui, minulisnimi granulald, 

 tramlucidd, patlidi corned, superne maeulis Btrigime 

 nifis angulatk tnonUiformiiun ornatd ; aiifractiius 

 quatitor ad quinque, convexii, ultimo injlato ; aperturd 

 verticali, Itmato-circulari ; perktomate simplici, su- 

 perne breniter expanse, basi rejlexo. 



The neckl.\ce Heli.\. Shell very broatlly umbilicated, 

 somewhat discoid, impressed at the upper part, thin, 

 very minutely granulated, transparent, pale homy, 

 ornamented with angular necklace-like red spots and 

 streaks ; whorls four to five, conve.\, the last inflated ; 

 aperture vertical, lunar-circular ; hp simple, shortly 

 e.vpanded at the upper part, reflected at the base. 



Broderip, Pro. Zool. Soc. 1832, p. 29. 

 Helix phnorbk, Jay. 



Hab. Salango, Columbia; Cuming. 



Of more solid structure and of a more discoid growth 

 than the preceding species. 



Species 573. (Mus. Cuming.) 



Helix iiians. Eel. iettd tubobtecti umbilicatd, deprtud, 

 tenui, pellucidd, nitidiuiculd, utulique regutariter el 

 conferlim granulald, paliuli corned, ttrigii anguitit, 

 ntfit, approrimatiH, undulalis, interdum ramosis el ad 

 suturam faicid pallidd, vmculi» irregulariiut ntJU tet- 

 seltatd, ornatd; npird plana ; anfraclil/u» qualuor ad 

 quinque, convexia, ultimo injlato, subcompretto, antice 

 vix descendenie; aperturd subobliqud, ampld, luiuito- 

 rotundatd ; periilomate tenui, expanno. 



The gaping Helix. Shell with a nearly covered umbi- 

 licus, depressed, thin, transparent, rather shining, 

 regularly and closely granuied throughout, pah- 

 horny, ornamented with close-set, waved, narrow, 

 red streaks, sometimes branching, and with a pale 

 band next the suture tessellated with trreguhir red 

 l)lotches ; spire flat ; whorls four to five, convex, the 

 last inflated, somewhat compressed, but little de- 

 scending in front ; aperture rather oblique, large, 

 lunar-rounded ; lip thin, expanded. 



Pfeiffek, Pro. Zool. Soc. 1845, p. 130. 



Hab. ? 



This belongs to the same type, and is doubtless from 

 the same locality, as the preceding species of this Plate, 

 but the umbilicus is small and nearly covered over by the 

 reflected expansion of the coluniellar margin of the lip. 



