HELIX. 
139 
56. 23. Helix revelata. Green Snail. — Shell or- 
bicular, subglobose, thin, finely wrinkled, um- 
bilicated, diaphanous, shining pale green, with a 
few scattered hairs ; whorls convex, last largest ; 
peristome thin. (t. 11. f. 133.) 
Helix revelata. Fermsac^ Prod, 44. (?) ; Michel^ Compl. 
27. t. 15. f. 6, 7, 8. ; Forbes and Hanley^ B.M. iv. 70. t. 119. 
f. 1, 2, 3.; Benson,, Ann, and Mag. N, H. 1848, ii. 359. 
(not Bouchard). — Helix bndiella. Ziegler. — Helicella reve- 
lata. Beck, Ind. 7. — Helix subviridis. Bellamy, British 
Assoc. 1841, South Devon. 
Inhabits shady places, among nettles. Devon, 
Cornwall, Nottingham. 
Animal blackish. 
Shell thin, nearly transparent, green ; the mouth 
large, roundish lunate, very oblique ; the umbilicus 
rather narrow, only showing the penultimate whorl ; 
the peristome is thin, and very slightly reflexed. 
Most like H, fusca^ but not so thin, and smooth, 
green, and umbilicated. The hairs are brittle and 
deciduous in the dry specimens. 
57. 24. Helix acideata. Prickly Snail. — Shell 
conical, globose, brown horn-colour, with the 
suture deep ; the periostraca rising into thin 
spinous foliations ; aperture semielliptic. (t. 4. 
f. 33.) 
Helix spinulosa. Light/. Phil. Trans. Ixxvi. 166. t. 2. f. 1 — 5.; 
Montagu, p. 449. t. 11. f. 10.; Linn. Trans, viii. 201. — 
Teba spinulosa. Leach, Moll. Syn. 72. — Helix aculeata. 
Muller, Verm.i\, 81.; Drag. p. 82. t. 7. f. 10, 11.; Alder, 
Cat, 109.; Boss. Icon. viii. f. 536.; Forbes and Hanley, B. M. 
iv. 74. t. 117. f. 5, 6. — Helix delectabilis. Solander, 
— Trochus terrestris, var. Da Costa, B. C. 36. (?) — Teba 
Granatelli. Bivon, in Occhio, 1839, n. 9. f. 2. — Fruticola 
aculeata. Held. Isis, 1837, 914. 
