EXPLANATION OF THE PLATES. 



(The species in italic are foreign.) 



TABLE I. 



1. Cyclas rivicola, p. 279. 



2. cornea, 280. 



3. lacustris, 281. 



4. lacustris, Drap. cop., 

 see p. 17. 



5. Pisidium amnicum, 285. 



6. Henslowianum, 285. 



7. pusillum, 283. 



8. Anodon cygneus, 289. 



TABLE II. 



9. Alasmodon margaritiferus, 



293. 



10. Unio Batavus, 296. 



11. pictorum, 295. 



12. ovalis, 297. 



13. tumidus, 297. 



TABLEAU. 



14. Limax maximus, 112. 



15. carinatus, 115. 

 1C, flavus, 114-. 



17. agrestis, 117. 



18. Testacellus Maugei, 5. 



19. haliotoideus, var. scutu- 

 lum, 124. 



20. Testacellus haliotoideus, 124. 



21. Vitrina pellucida, 120. 



22. Helix rufescens, 156. 



23. nemoralis, 132. 



24. hortensis, 130. 



25. arbustorum, 137. 



26. Cantiana, 144. 



27. Carthusiana, 146. 

 27.* See Tab. XL 



28. rufescens, 156. 

 28.* See Tab. XI. 



29. granulata, 151. 



TABLE IV. 



30. Helix Pisana, 158. 



31. virgata, 160. 



32. caperata, 162. 



33. aculeata, 149. 



34. Pomatia, 135. 



35. aspersa, 128. 



36. fusca, 147. 



37. ericetorum, 163. 



38. Zonites lucidus, 174. 



39. alliarius, 168. 



40. cellarius, 170. 



41. Helix hispida, 154. 



42. Zonites crystallinus, 176. 



43. purus, 171. 



TABLE V. 



44. Zonites rotundatus, 165. 



45. urabilicatus, 166. 



46. pygmaeus, 167. 



47. Helix fulva, 148. 



48. lamellata, 150. 



49. pulchella, 141. 



50. llelicophanta brevipes, 9., 



copied from Drap. 



51. Helix lapicida, 140. 



52. Azeca tridens, and mouth 



magnified, 189. 



53. Clausilia bidens, and mouth 



magnified, 212. 



54. Clausilia Rolphii, and 



mouth magnified, 215. 



55. Clausilia biplicata, and 



mouth magnified, 214. 



56. Clausilia papillaris, and 



mouth magnified, 14. 



57. Clausilia labiata, and mouth 



magnified, 14. 



58. Clausilia nigricans, and 



mouth magnified, 217. 



