Diatoms from North-East Greenland. 



227 



In the above list I have given an account of the distribution of 

 the individual species within different districts of the Arctic Seas. 



1 have in all 182 marine forms, of which 24 have until now 

 been unrecorded from the Arctic Seas. Hence 158 (86.8 "^ o), there- 

 fore by far the greater part, have previously been recorded from these 

 districts. If we now investigate the more detailed distribution, the 

 result will be as follows : — 



1) From W. Greenl. are known 103 (56.6 "/o) 



— E. Greenl. + E. of Greenl. are known 120 (66.0 «/o) 



- East Arct. S. are known 125 (68.7 »/o) 



17^ 



