ALPHABETICAL INDEX. 



137 



PiSIDIllM. 



Pisidium appendiciilata 120 



Pisidium cinereiim 221 



Pisidiuni fontinale 119 



Pisidium Jeny nsii 122 



Pisidium Joannis 122 



Pisidium nitidum 121 



Pisidium obliquum 118 



Pisidium obtusale 120 



Pisidium pusillum 121 



Planorbis. 



Planorbis albus IS 



Planorbis carinatus 20 



Planorbis contortus 24 



Planorbis corneus 17 



Planorbis imbricatus 19 



Planorbis Isevis IS 



Planorbis marginatus 20 



Planorbis nitidus 23 



Planorbis spi rorbis 23 



Planorbis vortex 22 



Pupa. 



Pupa Anglica 46 



Pupa bidentata 33 



Pupajuniperi 47 



Pupa marginata 44 



Pupa muscorum 42 



Pupa umbilicata 4o 



Pupa unidentata 43 



Segmentina. 



Segmentina lineata 25 



SuCCINEA. 



Succinea amphibia 30 



Succinea gracilis 30 



Succinea oblonga 31 



Testacella. 



Testacella Haliotoidea 89 



Testacella Haliotoidea 127 



Unio. 



Uuio Batavus Ill 



Unio Deshaysii 108 



Uuio ovalis Ill 



Unio pictorum 107 



Unio rostrata 109 



Uuio tumidus 110 



Valvata. 



Valvata cristata 7 



Valvata piscinalis fi 



Vertigo. 



Vertigo Alpestris 51 



Vertigo angiistior 52 



Vertigo cylindrica 49 



Vertigo edeutula 48 



Vertigo palustris 50. 



Vertigo pusilla 51 



Vertigo Pygniffia 48 



Vertigo sexdentata 49 



Vitrina. 



Vitrina pellucida 88 



