181 



20 to 50 miles, 31 males (34*8 per cent.), with an average distance of 30*9 miles, 

 and 37 females (35"2 per cent.), mtli an average of 33*6 miles. Nineteen males 

 and 17 females had gone to the north and west ; 7 males and 15 females to the south 

 and west ; 5 males and 2 females to the north and east ; 1 female south and east ; 

 and two directly west. 



* 50 to 100 miles. — Twenty-four, or 12*4 per cent., were found at distances between 

 50 and 100 miles, 13 males (14.6 per cent.), with an average distance of 78 miles, 

 •and 11 females (10-5 per cent.), with an average of 71*1 miles. Ten of the males 

 and 3 of the females were got to the north and west, one male to the north and east, 

 1 male and 5 females to the south and west, 1 male directly north, and 3 females to 

 the south and east. 



Over 100 miles. — Eight fish, or 4'1 per cent., were taken at distances exceeding 

 100 miles, 4 males (4-5 per cent.), with a mean of 131-4 miles, and 4 females (3-8 

 per cent.), with a mean of 111*5 miles. All the males and two of the females were 

 found to the north and west, in the Moray Firth, off Cape Wrath, and east of the 

 Orkneys ; 1 was recaptured to the north and east, also off Orkney ; and the other 

 in the offshore waters to the eastwards. 



Maturity. 



Males. — Of the 94 males recaptured, the condition of the testes was ascertained 

 in 68. 



Four were " spawning " ; 1, which measured 37"5-37"5 cm., was captured in 

 January 1911, after 223 days, off Banff, in the Moray Firth, at a distance of 77 

 miles ; 2 were taken in February, also off Banff, after 249 and 260 days, 

 measuring respectively 39-38"9 cm., and 32-36-4 cm. ; the fourth male was got 

 in March 1911, after 294 days, 103 miles to the northwards, off Rattray Point ; it 

 measured 35-38-4 cm. 



Five were described as " ripe." One, measuring 30-33*3 cm., was recaptured, 

 in February 1911, after 257 days, off Cape Wrath, at a distance of 200 miles ; 

 another, of 32-35-8 cm., was taken in April 1911, 51 miles to the north and east, off 

 Buchanness ; the third was recaptured also in April 1911, 21 miles to the north 

 and west ; the fourth was taken in March 1912, after 637 days, in the Moray Firth, 

 off Brora, at a distance of 117 miles, and measured 29-33-6 cm. ; the fifth was 

 got in April 1914, after 1398 days, near Clyth Ness, in the Moray Firth, at a dis- 

 tance of 106 miles, and it measured 36-5-44-4 cm. 



Four of the males were said to be " spent." Two were recovered in February 

 1911, 30 and 34 miles respectively to the north and west ; one was recaptured in 

 May 1911, 98 miles to the north and west, in the Moray Firth ; and the fourth, in 

 May 1913, 22 miles to the north-east. 



Five were described as " nearly lipe." Three were got in December, the place 

 of capture of 1, however, not being recorded ; one of the others was found 11 miles 

 to the north and west, after 188 days, and the other 14 miles to the north and west, 

 after 564 days ; the third fish was taken in November 1911, 97 miles to the north 

 and west, in the Moray Firth ; the remaining fish was captured in June 1912, 

 after 747 days, 23 miles to the north and west. 



Among those of adult size on recapture whose testes were "immature," were 

 the following taken within the limits of the spawning season : — 1, measuring 34-36-7 

 cm., at a distance of 16| miles to the north-west, in January 1911 ; 4 in February 

 1911, at distances of from 31 to 43 miles to the north-west ; 2 in March 1911, 

 each at 8 miles distant to the north and west. 



Among the fishes which were under the adult size (33 cm.) on recapture was 

 1 which measured 27-31-3 cm., taken in December 1910, 18 miles to the south 

 and east, and described as " nearly ripe." 



Females. — The condition of the ovaries was r corded in 80 of the 107 recaptured. 



Four were " spawning," all taken to tlie north and west. One was caught in 

 January 1912, after 597 days, 88 miles to the northward, and measured 25-5-40-1 

 era. ; another, of 40-40-8 cm., on 2.3rd Febriiary 1911, at a distance of 26 miles ; 

 the third in February 1913, after 982 days, at a distance of only 9 miles, and 

 measuring 29-41-3 cm. ; and the fourth, of 32-5-421 cm., in April 1912, after 676 

 davs, at a distance of 11 miles. 



