212 



In February 1915, a female was captured, after 636 days, 9 miles to the north 

 and west, and in December of the same year a male, after 945 days, 30 miles to the 

 north and werft, south-east of Buchanness. 



Distances traveUed — Under 10 miles. — Ten of the marked plaice, or 15*4 per 

 cent., were found at distances of from 7 to 10 miles, viz. 4 males (13-3 per cent.), 

 with an average of 8"2 miles, and 6 females (17"1 per cent.), with a mean of 8 miles. 

 Two of the males and 3 of the females were got to the south and west, and 2 males 

 and 3 females to the north and west. 



10 to 20 miles. — Fourteen, or 21-5 per cent., migrated distances of from 11 to 

 19 miles, viz. 7 males (23*3 per cent.), with an average of 14-3 miles, and 7 females 

 (20 per cent.), with an average of 15-3 miles. Three of the males and 1 of the females 

 were taken to the north a)id west, 2 males and 3 females to the south and west, 



2 males and 2 females to the north and east, and 1 female to the south and east. 



Thus, 24, or 36-9 per cent,, went distances under 20 miles, 11 males (36-6 per 

 cent.), with an average of 12 miles and 13 females (37-1 per cent.), with an average 

 also of 12 miles. 



20 to 50 miles. — Thirty-four, or 52-3 per cent., travelled distances between 20 

 and 50 miles, 16 (53-3 per cent.) being males, with an average of 33 miles, and 18 

 (5r4 per cent.) females, with a mean also of 33 miles. Two males and 2 females 

 were found to the north and west, 13 males and 16 females to the south and west, 

 and 1 male to the south and east. 



50 to 100 miles. — Six, or 9-2 per cent., moved distances of from 51| to 64 miles, 



3 males (10 per cent.), with an average of 55 miles, and 3 females (8-6 per cent.), with 

 a mean of 58-5 miles. All the males and 2 of the females were found to the south 



