Figure 30, Left, a pilchard otolith with two annuli and a false mark (F) 

 in the growth zone of the first year. Body length of fish I65 mm.; 

 caught January 18, 1939. Right, a pilchard otolith with two well- 

 defined annuli. Body length of fish 151 nmi.j caught February 7, 1939 • 



93 



