of the Fishery Board fur Scotland. 



41 



East Coast specimens show a bigger range ; they cover the range of the 

 Clyde herrings, and extend beyond that to the ripe condition of the ova. 

 There is a concentration towards the riper end of the scale, bat herrings 

 are represented with ova from -1 mm. to 1*2 mm, in diameter. There is a 

 mixture of winter and summer spawners. The overlapping individuals of 

 each of these two groups together form an autumn spawning lot. The 

 herrings of the Clyde, and the West and East Coasts, having eggs '6 and 

 •7 mm. in diameter must be autumn spawners. 



Food. — In the full herrings the stomach is sometimes small, and shrunken 

 as if not functioning. Two herrings — a full and a developing summer 

 spawner — had what appeared to be non-feeding stomachs. The latter had 

 eggs -85 mm. in diameter and no abdominal fat. It is therefore probable 

 that the fish had only ceased from feeding for a short time. In other cases, 

 although the postei'ior part of the stomach is squeezed flat between the two 

 large reproductive organs, the anterior part, including the pylorus, contains 

 food, and is sometimes full. 



Herrings from Clyde, West Coast, and East Coast. 



September. 



Clyde. — Campbeltown, between Pladda and Brown Head, 22nd Septem- 

 ber 1906 :— 41 W. Spr., 23 to 27 cm. : eggs, -25-6 mm. : o, 4-5-13 mm. : 

 t, 12-21 mm. : fat, great quantity ; 10 Aut. Spr. F. S, 25 to 28 cm. : t, 

 20-25 mm. : fat, large quantity ; 3 S. Spt., 23 to 26 cm. : eggs, -15 mm. ; 

 o, 4, 15 mm, : t, 9 mm. : fat, large quantity. There was practically no 

 food. 



Clyde.— 3 miles east of Holy Isle, Arran, 18th September 1906 :— 6 

 W. Spr., 23 to 25 cm. : eggs, '5 ^7 mm. : o, 10-13 mm. : t, 9-14 mm. 



