viii 



Latia lateralis 105. 

 Laaria umbilicata 12. 

 Lehmannia arborum 129. 

 — variegata 129. 



Letourneuxia 109. 

 Limax agrestis 2. 96. 



— arborum 2. 123. 



— laevis 124. 



— marginatus 96. 



— maximus 2. var. cinereo- 

 niger 31. 96. 128. 155. 

 157. v.'cinereus 31. 128. 

 V. unicolor 128. 



— tenellus 2. 123, 128. 

 Limnaea 38. 



— ampla 145. 



— auricularia 38. 145. 



— glabra 148. 157. v. 

 subulata 148. 



— ovata 38. 123. 124, 

 157. var. Dickinii 146. 

 V. fontinalis 146. var. 

 inflata 145. v. succi- 

 nea 146. 



— palustris 39. 98. 146. 

 157. var. corvus 147. 

 V. fusca 147. 



— peregra 39. 98. 146. 

 157. 



— stagnalis 39. 123. 124. 

 142. var. arenaria 144. 

 V. ampliata 103. var. 

 angulosa 143. v. bore- 

 alis 143. V. lacustris 

 144. V. subulata 143. 

 V. turgida 143. v. vul- 

 garis 143. 



— truncatula 39. 98. 123. 

 148. f. major 148. 



Limnaeidae 17. 

 Limnaeinae 17. 

 Limnophysa abyssicola 19. 



Limnopbysa palustris 18. v. cui*- 



ta 19. V. flavida 



19. V. turricola 19. 



— truncatula 19. 



Limnus stagnalis 17. v. boda- 



mica 17. v. lacustris 17. v. 



vulgaris 17. 



Lucena oblonga 16. v. elongata 



16. V. humilis 16. 

 Naticidae 89. 

 Naticina Oeinitzii 89. 

 Napaeus montanus 11. 



— obscurus 11. 

 Neritostoma putris 15. v. Char- 



pentieri 15. v. Drouetia 15. 

 V. limnoidea 16. var. nigro- 

 limbata 16. v. olivula 16. 



Neritina fluviatilis 155. 157. 



Nuculidae 92. 



Orcula doliolum 12. 



— dolium 12. 

 Otoconcha 101. 



— dimidiata 101. 102. 

 Pagodina pagodula 12. 

 Paludina vivipara 124. 157. 

 Paludinidae 22. 

 Patula pygmaea 5. 123. 135. 



— rotundata 5. 34. 97. 123. 

 135. 



— ruderata 5. 34. 



— rupestris 5. 



— solaria 34. 

 Petasia bidens 156. 

 Pisidium amnicum 25. 



— alpicola 26. 



— Asperi 26. 



— casertanum 41. 



— Foreli 25. 



— fragillimum 26. 



— Henslowianum 25. 



— imbutum 26. 



— intermedium 25. 



