KUNGL. SVENS KA VETENSKAPSAKADEMIENS HANDLINGAR. Band 48. N:q 1. 



{"1052^ NORTHERN 

 KoLL. 



AND 



ARCTIC INVERTEBRATES 



IN THE 



COLLECTION 



OF THE 



SWEDISH STATE MUSEUM 



(RIKSMUSEUiM) 



^ MAR 02 1989 



PROSOBRANGHIA. i DIOTOCARDIA 



BY 



NILS ODHNER 



WITH SEVEN PLATES 



COMMUNICATED DECEMBER 6Th ion BY H.I. THEEL AND G. HOLM 



UPPSALA & STOCKHOLM. ALMQVIST & WIKSELLS BOKTRYCKERI-A.-B. 



PARIS 



LIBRAIBIE C. KLINCKSIECK 

 11 RUE DE LILLE 



BERLIN 

 B. FRIEDLÄNDER & SOHN 

 11 CARLSTRASSE 



LONDON 

 WILLIAM WESLEY & SON 

 28 ESSEX STREET. STRAND 



