Polygyra 



mutUineala 



rubra 



.- Bidimulus 

 dealbatus 



Hendersonia 

 occulta 



Haph^rema 

 concatum 



liaploirema ^eoHcavum 



Succinea 

 waits 



Polygyra 

 tridenlata 



olygyra m>utilineata 



Polygyra mullUineata 



A nguispira 

 alternala 



M 



r^r^olygyra devata 



Polygyra elevata 



Polygyra profunda 



Polygyra profunda 



phix friabUis 



A nguispira kocki 



.^ Pcdygyga albolabris 



