of from 50 to 100 miles, viz. 20 males (27 percent.), with an average oi 82"1 miles, 

 17 females (15"2 per cent.), with an average of 80-5 miles, and 3 (42'8 per cent.) 

 of unknown sex, with an average of 78*5 miles. Eighteen males, 13 females, 

 and 3 of unknown sex were found to the north and west ; 1 male and 3 females 

 to the north and east ; 1 male and 1 female to the south and west. Eighteen 

 of the males, 12 of the females, and 2 of uuknown sex. or 32 altogether of the 40, 

 were recaptured in the Moray Firth. 



Over 100 miles. — Thirty-six fish, oi' 18-6 per cent., were recovered at distances 

 of from 101 to 197 miles, namely, 18 males (24-3 per cent.), with an average of 126-8 

 miles, 16 females (14-3 per cent ), with a mean of 131-4 miles, and 2 of undetermined 

 sex (28-6 per cent.), with an average of 156-5 miles. Fifteen of the males, 8 of the 

 females, and the 2 of unknown sex had migrated to the north and west ; 3 males 

 and 8 females to the iiorth and east ; none was found to the south and west, nor to 

 the south and east. Eight males, 5 females, and 1 of the unknown sexes were 

 recaptured in the Moray Firth, mostly off the coast of Caithness, and 2 of the males 

 just outside the limits of the firth. Two males and 2 females were taken on the 

 north coast of Scotland. Three males and 3 females were got in the neighbourhood 

 of the Orkney Isles. One male and 2 females were taken near Fair Isle, and 2 males 

 and 1 female off Cape Wrath, on the west coast. A female was caught at the 

 entrance to the Pentland Firth, and another far offshore to the east of Noss Head. 



Maturity. 



Males. — Of the 76 males recaptured, the condition of the testes was ascertained 

 in 60. Nine were " spawning " ; 7 of them were caught in the Moray Firth, 6 

 near Banff, at a distance of 77 miles, and 1 on the Caithness coast, at a distance of 

 104 miles ; 1 was recaptured off Sandside, on the north coast of Caithness, at a 

 distance of 148 miles, and 1, 45 miles to the south and west, to the east of the Firth 

 of Forth. Two were taken in January 1911. 4 in February 1911, 2 in March 1911, 

 and 1 in March 1913. 



Sixteen were " ripe," of which 7 were recaptured in the Moray Firth, 3 at Banff, 

 at a distance of 77 miles, and the others at distances of from 101-5 to 107 miles. 

 One was got on the north coast, at a distance of 150| miles, 2 off Orkney, at distances 

 of 127 and 146 miles. 1 off Cape Wrath, at a distance of 194 miles, 2 off Buchanness, 

 at 32 miles distant, 1, 4 miles to the north and west of the station, and 1, 17 miles 

 to the south and east ; the locality of recapture of the remaining fish was not ascer- 

 tained. Eight of these were taken in February 1911, 1 in February 1912, 2 in 

 March 1911, 2 in March 1912, 1 in May 1911, 1 in June 1911, and 1 in July 1911. 



Five were described as " spent," 1 taken in June 1914, after 1362 days, near 

 Fair Isle, at a distance of 146 miles, and the others at, respectively, 5, 15, 17, and 

 29 miles to the north and west, 3 in March 1911, and 1 in April 1912. 



Eight were " nearly ripe." Two were recaptured in the Moray Firth at dis- 

 tances of 78 and 105 miles, 1 near Cape Wrath, at a distance of 190 miles, 1 to the 

 north of Rattray Point, at a distance of 72 miles, 2 off Buchanness, at distances of 32 

 and 38 miles, 1, 8i miles to the north and west ; the remaining male was recaptured 

 22 miles to the south and west. One of these fish was got in January, 4 in February, 

 1 in October. 1 in November, and 1 in December. 



Two were described as "three-quarters ripe," 1 taken in the Moray Firth in 

 February 1912, at a distance of 117 miles, and the other in January 19i4, 8 miles 

 to the north and west. 



Fourteen were described as " immature." Two were recovered in April, both 

 to the south and west, at distances of 3^ and 32 miles respectively ; 2 were caught 

 in May, the place of recapture of 1 being unrecorded, the other being taken 18 miles 

 to the south and west. Two were taken at considerable distances, 1 in the Moray 

 Firth, in August 1911, 94 miles away, and the other in June 1912, off Auskerry, 

 Orkneys, at 127 miles distant. 



Females. — Of the 112 females recovered, the condition of the reproductive organs 

 was ascertained in 92. 



Eight were " spawning " ; 6 were recaptured to the north and west, 1 to the 

 south and west, and 1 to the north and east. One was taken in the Moray Firth, 

 oft' Banff, at a distance of 77 miles ; another off Stronsay, 140 miles distant to the 



