23 



Fig. 



Clausilia corrugata 146 



147 

 148 



Pupa fragilis 149 



150 



Pupa tridens 151 



152 



Pupa Muscorum 153 



quadridens 154 



155 

 156 



Auricula minima 157 



159 

 160 

 161 



Planorbis imbricatus 162 



163 

 164 

 165 

 166 

 167 



HELIX. PI. 32. 



Auricula Scarabaeus l 



2 



Carocolla Lapicida 3 



■ marginata 4 



5 



Helix vesicalis 6 



Cyclostoma Valvulus 7 



Carocolla albella 9 



10 



Helix rotundata 11 



15 



HELIX. PI. 33. Fig. 



19 

 20 

 21 

 22 



Planorbis carinatus 23 



24 

 25 



Anostoma depressum 26 



Carocolla Labyrinthus 27 



Helix personata 28 



Carocolla Lucerna 30 



Lychnuchus SI 



33 



Carocolla albilabris 34 



Helix gigantea 36 



37 

 38 

 39 



Planorbis Vortex 40 



41 



Carocolla inflata 44 



45 



Ampullaria Avellana 46 



47 



Planorbis corneus 48 



• spirorbis 50 



51 



Planorbis contortus 52 



. hispidus 53 



54 



Planorbis Cornu-Arietis 55 



56 

 58 

 59 



Helix nitida 60 



61 



