174 



Distances travelled — 10 miles and under. — Six of the marked fish, or 20 per 

 cent., were recaptared at distances of from 1|- to 2| miles, Jiamely. 4 males (21 per 

 cent.), with an average of TG miles, and 2 females (18"2 per cent.), with a mean of 

 2 miles. All were taken to the south and west, within St. Andrews Bay. 



10 to 20 miles. — Fourteen, or 46-6 per cent., were got at from 11 to 19 miles, 

 9 males (47*4 per cent.), with an average of 15 miles, and 5 females (45"4 per cent.), 

 with an average of 12-6 miles. Eight of the males and all the females Avere cautht 

 to the south and east, 1 of the males to the north and east. 



Thus, 20 fish, or 66-6 per cent., migrated distances of less than 20 miles, 13 males 

 (68*4 per cent.), with an average of 10"8 miles, and 7 females (63-4 per cent.), with an 

 average of 9J miles. 



20 to 50 ')! lies. — Five, or 16-6 per cent., were found at distances of from 20 to 

 38 miles, 2 males (10-5 per cent.), with an average of 20 miles, and 3 females (27-3 

 per cent.), with an average of 33 miles. Both the males and 2 of the females were 

 recovered to the south and east, and 1 of the females to the north and east. 



50 to 100 miles. — Two of the fish, or 6"6 per cent., were taken as follows : — A 

 male, at a distance of 84 miles to the north and east, at Rattray Head, and a female, 

 off Aberdeen, at a distance of 67 miles to the north and east. 



Over 100 miles. — Three males (15*8 per cent.) were taken in the Moray Firth, 

 at distances of 158, 159, and 166 miles, respectively. 



Maturity. 



Males.— Ihe, condition of the testes was ascertained in 15 of the 19 recaptured. 

 Two were " spawning," both taken in March 1914, at distances of 17 and 20 miles 

 to the south and east. 



Four were described as " nearly ripe " ; 1 was taken in December 1913, 1| 

 miles to the south and west, and another, in the same month, at a distance of 2 nules 



