142 



DISCOVERY REPORTS 



Table XI. Bellingshausen Sea 



and it is in fact the variations in the numbers of these two species which are responsible 

 for the variations in the total numbers of organisms. The other species, which are not 

 very abundant, occur in quite uniform numbers. 



Table XII shows the results of the ' William Scoresby ' line of stations. 



WS 508 is in the region of thin plankton in the eastern Bellingshausen Sea, but heavy 

 catches were taken at the other four and the plankton becomes progressively richer 

 towards the west. Apart from this increasing abundance the plankton is very similar at 

 each of these stations. It resembles that of the ' Discovery II ' line in the scarcity of 

 Euphausians and in the numbers of Rhincalanus and Limacina, but differs from it in 

 the great abundance of Calanus acutus, and in the larger numbers of Calamis propinquus 

 and Chaetognatha. 



These two lines of stations indicate that the Bellingshausen Sea may be divided, in 



