KUNGL. SVENSKA VETENSKAPSAKADEMIENS HANDLINGAR. Band 48. N:o 1. 



Division of Molluskt 

 Sf^Ctioiiai Library 



NORTHERN 



AND 



ARCTIC INVERTEBRATES 



IN THK 



COLLECTION 



OF THE 



SWEDISH STATE MUSEUM 



(RIKSMUSEUM) 



PROSOBRANGHIA. l DIOTOCARDTA 



BY 



ISriLS OÜHNER 



WITH SEVEN PLATES 



COMMUNICATED DECEMBER GTH ]911 u\ h.I. THEEE AND G. HOLM 



riM'SALA & STOCKHOLM 

 AF-MUVIST i& WIKSKI.LS h<)ktry(;ki:mi-a.-i{. 

 1912 



