150' 



went south and west, in the direction of the mouth of the Firth of Forth ; 2 of the 

 females moved directly west, 2 to the north and west, and 1 to the north and east. 



Under 20 miles. — Thus, 15, or 25-8 per cent., were taken within 20 miles of the 

 station, 5 males (35"7 per cent.), with an average of 10-6 miles, and 10 females (23-2 

 per cent.), with an average of 14'4 miles. 



20 to 50 miles. — Twenty-six of the recaptured plaice or 44"8 per cent., were taken 

 at distances of from 20 to 47 miles, 5 males (35'7 per cent.), with an average of 

 29'9 miles, 20 females (46-5 per cent.), with an average of 33'5 miles, and 1 whose 

 sex was not recorded. One of the males and 2 of the females were found directly 

 west, to, yards the Firth of Forth ; 1 of the males and 5 of the females went north 

 and west, mostly towards the Firth of Forth ; 2 males and 7 females went north 

 and east ; 1 male and 5 females were found to the south and west, as was also 

 the fish of unknown sex ; and 1 female was got to the south and east. 



50 to 100 miles. — Eight of the recaptured plaice, or 13"8 per cent., were taken 

 at distances of from 50 to 97^ miles, viz. 2 males (14*3 per cent.), with a mean of 

 78 miles, and 6 females (13'9 per cent.), with a mean of 62'7 miles. One of the 

 males and 4 of the females went to the north and east, off the coast of Aberdeen- 

 shire ; the other male went south and west to off Hartlepool ; 1 female was found 

 to the north and west, off Aberdeen, and another to the south and east. 



Over 100 miles. — Nine were recovered at distances of from 102 to 208 miles, 2 

 males (14"3 per cent.), with an average of 169'7 miles and 7 females (16'3 per cent.), 

 with a mean of 122 miles. The 2 males and 5 females were taken to the northwards, 

 off Buchannpss, in the Moray Firth, and on the north coast of Scotland, while 2 of 

 the females were caught to the south-east, off Whitby and Scarborough. 



Maturity. 



Males. — Of the 14 males recaptured, the condition of the testes was ascertained 

 only in 8. 



One, of 34-38 cm., taken in June 1912, after 276 days, at a distance of 8 miles 

 to the south and west, was described as " ripe." Two were " nearly ripe," 1, of 

 35-34-8 cm., got in December 1911, after 92 days, 16 miles to the south and west, 

 and the other, of 39-38"4 cm., also found in December, after 108 days, 28 miles to 

 the westwards. 



One was " spent " ; it measured 33-5-37-9 cm., and was caught off Noss Head, 

 Moray Firth, in March 1913, after 555 days. 



Another, of 39-38-5 cm., was described as " nearly half-ripe," and was caught 

 in October 1911, after 22 days, 28 miles to the north and west. 



The remaining 3 were " immature " ; 2 were taken in the month of September, 

 and 1 in October. 



Females. — Of the 46 females caught, the condition of the ovaries was recorded 

 for 36. 



One, measuring 40-5-48-2 cm., was " spawning," and was taken in February 

 1914, after 897 days, at Aberdeen Bay, a distance of 52 miles to the north and west. 



Two were "ripe " ; 1, of 40-40 cm., was caught in February 1912, after 164 

 days, off Whitehills, Banff, in the Moray Firth, at a distance of 110 miles ; the other, 

 of 41-5-41-7 cm., was taken in March 1912, after 181 days, near Buchanness, at a 

 distance of 60 miles to the northwards. 



Five were " nearly ripe " ; 1, of 44-5-44 cm., was found in October 1911, after 

 27 days, .30 miles to the south and west, east of St. Abb's Head ; the second, 

 measuring 54-54-1 cm., was taken in November 1911, after 59 days, 36 miles to the 

 north and west, off St. Andrews Bay ; the third, measuring 44-46 cm., was caught 

 in January 1912, after 133 days, near Aberdeen, at a distance of 47 miles to the 

 northwards; the fourth, of 38-5-39 cm., was recaptured in February 1912, after 

 144 days, near the Orkney Isles, at a distance of 151 miles ; the position where 

 the remaining female was taken is unknown . 



Two were described as " spent " ; 1, of 43-46 cm., was got in March 1913, after 

 561 davs, in the Firth of Forth, between St. Monans and Pittenweem, at a distance 

 of 46 miles ; the other, of 38-41-1 cm., was caught in July 1913, after 665 days, 

 15 miles to the westwards. Another female, of 38-5-42-6 cm., was taken in June 

 1912, after 273 days, 21 miles to the north and west, and was described as " appar- 

 ently spent." 



