Fig. 20. Chart showing the occurrence of E. longirostris, E. triacantha and E. spinifera at the stations of the 

 circumpolar cruises February to October 1932, and in the Falkland Sector in the summer 1932-3. The inner 

 of the two thick hues represents the Antarctic convergence, the outer the sub-Antarctic convergence. 



5-2 



