142 



DISCOVERY REPORTS 



more abundant diatom flora, may account for their larger size compared with those taken immediately 

 afterwards along the ice-edge. 



The graph C, representing the Weddell Sea ice-edge yearling krill, is the only one of the three 

 graphs having two peaks showing two widely separated size groups in the population; but, as John 

 remarks, more knowledge is necessary to understand what it and the two smaller and less widely 

 separated size groups in the Bellinghausen Sea yearling krill mean. 



LENGTH (UMI 



Fig. 6i. Analyses of length frequencies of samples of young Eiiphausia superba: 

 A, Bellingshausen Sea; B, South Georgia; C, Weddell Sea ice-edge. 



(/) South Georgia-ice-edge-Cape Town, March 1933 (Sts. 1137-1167). 



The last of the V-shaped sections of the circumpolar cruise from South Georgia to the ice-edge 

 far to the east and south, and from there to Cape Town was made in March 1933. 



I have not had the opportunity to examine the krill taken during this voyage but quote from John's 

 report: "Although the places where we made many of our stations and the times at which we made 

 them were places and times at which larval krill might have been expected we did not recognize any 

 in our hauls. . . . Catches of large numbers of adult krill have been few although we continued to tow 

 a surface metre net in addition to the oblique series at every station. We saw no krill patches. Near 

 the ice-edge, in 69° S, 9° E, we followed our usual practice on such visits of towing net after net, until 



