Table 2.-0bser\'ed age and length distribution of male (M) and female (F) Alaska plaice taken in the southeastern Bering Sea in 1961. 



'One additional male, age 18 yr, length 47.6 cm, 1,380 g. 

 ^Calculated from ungrouped data. 



Table 3.-0bserved age and length distribution of male (M) and female (F) rock sole taken in the southeastern Bering Sea in 1961. 



'Calculated from ungrouped data. 



from large samples of eastern Bering Sea 

 yellowfin sole collected in 1963 and 1965-66, res- 

 pectively. There is no appreciable difference 

 between the two above age-length curves and our 

 1961 data (Figure 3). 

 With rock sole, the only comparative age-length 



data by sex is presented by Levings (1967) for 

 samples collected in the northeastern Bering Sea 

 in 1963. Levings' age-length observations on male 

 rock sole are similar to our collections, but a con- 

 siderable difference exists in female lengths-at- 

 age. The females taken in 1963 are older and at a 



922 



