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. Ferussac, Prod. 44. (?) ; Michel, Compl 

 27. t. 15. f. 6, 7, 8. ; Forbes and Hanle.y, B.M. iv. 70. t. 119. 

 f. 1, 2, 3.; Benson, Ann. and Mag. N. H. 1848, ii. 359. 

 (not Bouchard}. Helix badiella. 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 aculeata. 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. 15.; 

 Montagu, p. 449. t. 11. f. 10.; Linn. Tram. viii. 201. 

 Teba spinulosa. Leach, Moll. Syn. 72. Helix aculeata. 

 Muller, Verm. ii. 81.; Drap. p. 82. t. 7. f. 10, 11.; Alder, 

 Cat, 109.; Ross. Icon. viii. f. 536.; Forbes and Hartley, B. M. 

 iv. 74. t. 117. f. 5, 6. Helix delectabilis. Solander, MSS. 

 Trochus terrestris, var. Da Costa, B. C. 36. (?) Teba 

 Granatelli. Bivon, in Occhio, 1839, n. 9. f. 2. Fruticola 

 aculeata. Held, his, 1837, 914. 



