k 



M 



SCALE 



10-10.000 



I 10,000 — 100000 



I 100,000—250.000 

 1 > 250,000 



X 





1 



Fig. i6. The distribution of Ceratium pentagonum i.grandis. South Georgia survey, January-February 1930. 



Fig. 17. The distribution of Eucampia antarctica, South Georgia survey, January-February 1930. 



