KUNGL. SVENSKA VETENSKAPSAKADEMIENS HANDLINGAR. Band 40. N:o4. 



NORTHERN 



AND 



ARCTIC INVERTEBRATES 



■ 



IN THE 



COLLEGTION 



OF THE 



SWEDISH STATE MUSEUM 



(RIKSMUSEUM) 

 II. 



PRIAPULIDS, ECHIURIDS ETC. 



BY 



HJALMAR THÉEL 



WITH TWO PLATES 

 READ FEBRUARY H TH , 1906 



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



BEELDT LONDON PARIS 



K. FRIEDLÄSDEE & SOHX WILLIAM TVESLEY Se SOX LIBEAIRIE H. LE SOUDIER 



11 CARLSTRASSE 28 ESSEX STREET. STRAND 174 BOULEVARD S:T GERJIAIS 



