BIGELOW: EXPLORATIONS OF THE COAST WATERS. 



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per square meter at Station 10309). But not enough hauls were made 

 in any month, in 1915, for these averages to be more than a general 

 index to abundance. 



Number of Copepods. The work during 1914 strengthens the view 

 that copepods are the only important members of the macroplankton 

 of which the quantitative hauls yield an approximately complete 

 catch (1914a, 1915), for comparatively few Sagittae, amphipods or 

 schizopods were taken in the Hensen net even at stations where they 

 were very abundant {e. g. the Sagitta swarm at Station 10224). For 

 this reason the copepods alone are treated numerically here. 



The numbers of copepods per square, and per cubic meter, disre- 

 garding the coefficient of filtration of the net, is given in the following 

 table for 1914. 



