SAGITTA GAZELLAE 



261 



30° 



(KJ 



90" 



120 



Fig. 17. The horizontal distribution of S. gazellae in the top 100 m. of water. Data from the shallow oblique 1 m. nets. 

 The chart shows the Antarctic Convergence, and, closer to the continent, the normal position of the pack-ice edge in March. 

 The subtropical convergence is shown as a short line at right angles to each line of stations which crossed it, and is the con- 

 temporary position found by reference to the continuous thermograph, and not a mean position. 



