HYPOTHESIS OF ANIMAL EXCLUSION 



3°3 



the copepod Poreuchaeta antarctica, in daylight series only (and with small numbers) 

 and the chaetognath Eukrohnia hamata. The figures for the latter are, however, upset 

 by one outstanding catch, as shown in the footnote to Table LV. The two copepods 

 C. acutus and R. gigas will be dealt with when we come to consider the copepods in 

 greater detail in the results of the N 70 V and N 70 H nets. We will, however, here deal 

 with the exception Antarctomysis maxima. 



Table LV 

 Correlations of phosphate values and average numbers of the same macroplankton organisms 

 given in Table LIV, but divided into stations taken in daylight and those taken in darkness 



a Excluding one outstanding catch of 840. 

 b „ „ ,, „ 1,157- 



„ „ „ ., 42>5°°- 



d „ „ „ „ 4. 800 - 



10,835. 



We see that this mysid Antarctomysis maxima occurs at stations having a lower phos- 

 phate value and so a higher phytoplankton concentration than do the other organisms. 

 We have seen in the detailed discussion of its occurrence on p. 201 and in Fig. 88 that 

 it has a most interesting distribution in that it is directly the reverse of that of Euphausia 

 superba, being concentrated on the south-west side of the island, i.e. in the region of 

 dense phytoplankton production. This is a form which rarely comes into the surface 

 layers ; it lives near the bottom during the day and usually only comes into midwater 



39-2 



