KONGL. SV. VET. AKADEMIENS HANDLINGAK. BAND 20. N:0 5. 



47 



Istlimoplea 



a 

 re o 



13 ^ 

 o 



B qq 



5" 



=r 



cc 



P 

 t» 



a 



The White Sea 



and the western 



Murman Sea. 



CO £ 



re „• 



1^ 



Oi 



f-i 



P 



re 



The Siberian 

 Sea. 



" B 

 = 



p 



te 





1 



1 



1 



1 

 1 



1 

 1 



1 

 







1 



1 



1 



1 



1 











1 

 1 



1 





1 

 1 



1 







1 

 1 







Prasiola 





Derbesia 











Lyngbya 





Gleocapsa 



