204 



1 -ISHKKY BULLET1X OK THE FISH AXD WILDLIFE SERVICE 



10 120 130 140 150 160 170 180 190 200 210 220 230 240 250 

 LENGTH AT AGE n 



Figi re 1. — Transformations of 9-season averages of observed lengths of Pacific pilchard at each age in five regions of 

 catch. British Columbia averages represented by dot, Pacific Northwest by solid square, San Francisco by cross, 

 Monterey by plus, San Pedro by circle. 



