FISHERY BULLETIN: VOL. 72, NO. 1 



40° 



100" 60° 20° 0° 23' 60° 100° 140° 180° 140° 100° 60° 



Figure 37. — Comparison of shaded area enveloping all capture records of Pontellina phiinata, shown in Figure 5 with 

 selected mean isotherms at 10 m for winter season of each hemisphere. Data from Muromtsev (1958, 1963) and 

 Wvrtki ( 1971). Further discussion in te,\t. 



Table 20. — Separate and joint occurrences among species of Pontellina. Values 

 in parentheses are the index of affinity; a value greater than 0.5 suggests joint mem- 

 bership in the same communal assemblage of species. 



114 



