KUNGL SVENSKA VETENSKAPSAKAÜEMIENS HANDLINGAR. Band 41. N:o 4. 



L 



Hb 



v .° NORTHERN 



fA() UL ✓ AND 



A R C T I G I N V E KT E B R AT KS 



IX THE 



COLLECTION 



OF THE 



SWEDISH STATE MUSEUM 



(RIKSMUSEUM) 



III. 



OPISTHOBRANCHIA AND PTEROPODA 



BY 



NILS ODHNER 



WITH THREE PLATES 



COMMUNICATED MAY 9™ 1906 BY H.I. THEEL AND CHR, AURIVILLIUS 



UPPSALA & STOCKHOLM 

 ALMQVIST & WIKSELLS BOKTRYCKERI-A.-B. 

 1907 



