DET ZOOLOGISKE LABORATORIUM KRISTIANIA 



ARIONIDAE OF NORWAY 



BY 

 FRIDTHJOF ØKLAND 



(WITH 46 FIGURES IN THE TEXT, 5 MAPS AND I PLATE) 

 (ViDENSKAPSSELSKAPETS SkRIFTER. I. MaT.-XATURV. KlASSE. 1 922. No. 5) 



-C^=^)- 



CHRISTIANIA 



IN COMMISSION BY JACOB DYBWAD 



1922 



