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3n Dct aipitta Tom. II. I 3nt>.g5ef<t>wiMe$$o<>ettfee& 



Turbo nautileus 



Patella fluviatilis 



Nerita valvata, No 51 « 



Nerita valvata, No 5a . 



Helix tentaculata. 



Turbo nautileus. 



Patella fluviatilis. 

 Nerita valvata. 

 Helix piseinoali^ 



