EXPLANATION OE THE PLATES. 531 



PLATE XII. 



HelicidcB. t, 



Page 



1. Helix {Acavus) hgemastoma, L. f . Ceylon 289 



2. {Folygyra) polygyrata, Born. f. Brazil 289 



3. \CarocoUa) lapicida, L. Britain 289 



4. ■ {Anastoma) globulosa, Lam. Brazil 289 



0. llTndojJsis) hirsuta, Sby. U. States 289 



6. ■ IStreptaxis) contusa, Fer. Brazil 289 



7. {Sagcla) epistylium, Miill. Jamaica 289 



8. {miicella) cellaria, Miill. Britain 289 



9. \sten02ms) Iffivipes, Miill. Malabar 290 



10. Bulimus oblongns, MiiU. |. Gruiana 291 



11^ 12. decoUatus, L. S. Europe 291 



13. (Fartula) faba, Martin. Tahiti 291 



14. {Zua) lubricus, MiiH. Britain^ 292 



15. [Azeca) tridens, Pulteney. Britain 292 



16. Pupa uva, L. sp. Gu.adaloupe 292 



17. [Vertigo) Venetzii, Cbarp. i.. Pliocene, Essex 293 



18. Megaspira elatior, Spix sp. f Brazil 294 



19. Clausilia plicatula, Drap. Kent 294 



20. Cylindrella cylindrus, Cbem. sp. |. Jamaica 293 



21. Balsea perversa, L. sp. Britain 292 



22. Acbatina variegata. Fab. Col. J. W. Africa 292 



23. Succinea putris, L. Britain 290 



24. {Omalonyx) tmguis. Orb. Paraguay 291 



Limacidcs. 



25. ijimax maximus, L Britain „ 295 



26. Testacella baliotoides, Fer. -f- Britain 298 



27. Parmacella {Gryptello^ calyculata, Sby. Canaries 297 



28. Yitrina Lraparnaldi. Cuy. Britain 290 



29. {Baudebardid) brevipes, Drap. -|.. Austria 290 



Limnmd<B. 



30. Linmgea stagnalis, L. sp. Britain . ._ 300 



31. {Ani]ohi23e23lea) glutinosa. Mull. Britain 301 



32. Physa fontinalis, Mont. sp. Britain SOI 



33. Ancylus fluviatilis, Lister sp. Britain 302 



34. Planorbis corneus, L. sp. Britain 302 



Auriciclidce. 



35. Auricula Judge, L. f . India 304 



36. scarabseus, G-ym. sp. Ceylon 304 



37. {Conovulus) coffea, L. W. Indies 304 



38. . [Alexia) denticiilata, Mont. sp. Britain 305 



39. . Carycbium minimum, Drap. sp. ^. Britain 305 



CyclostomidcB. 



40. Cyclostoma slogans, Miill. sp. Britain 306 



41. Cyclophorus involvulus, Miill. sp. f. India 308 



42. Pupina bi-caniKculata, Sby. N. Australia 309 



4'3. Helicina Brownii, G-ray. J. Jamaica 310 



44. Acicula fusca, Walker, sp. ±. Britain 310 



