of the Fishery Board for Scotland. 33 



full herrings. The herrings had been feeding on copepods ; some stomachs 

 were, however, empty. 



East Coast.— Aberdeen :— 13 W. Spt., 23 to 26 cm,: eggs, -15, -35 

 mm. : o, 4-8 mm. : t, 7-16 mm.: fat, great quantity; 1 W. Spr. $, 22 

 cm. : o, 8 mm. : fat, great quantity ; 19 S. Spr., 23 to 28 cm. : eggs, -A.-^ 

 mm., "95 mm. : o, 9-24 mm. : t, 11-30 mm.: fat, great quantity, "a little." 

 These herrinsrs had been feeding. 



East Coas"t.- -Aberdeen, 54 miles S.E. by E. of, 28th July 1908 :— 

 2 W. Spt. 6, 25 cm. : t, 12, 13 mm. : fat, a trace, or none ; 18 S. Spr., 

 24 to 28 cm. : eggs, •4-- 9 mm. : o, 10-27 mm. : t, 20 (and over) mm. : fat, 

 large quantity to "none." Of the S. Spr., 11 wei-e full herrings. The 

 stomachs, with one exception, contained no food. 



East Coast.— Peterhead, 14 miles off, 34 fms., 24th July 1906 :— 2 W. 

 Spt., 23, 35 cm. : eggs, -1 mm. : fat, one had a lai-ge quantity, the larger 

 had no fat; 46 S. Spr., 23 to 27 cm. : eggs, -6-10 mm. : o, 13-30 mm. : 

 t, 16-30 mm. : fat, large quantity to " none." Of the summer spawners, 35 

 were full herrings. While some had no food in the stomach, others had. 

 Certain of the full herrings did not seem to have been feeding just 

 recently. 



East Coast. — Lerwick, 50-70 miles East of Bressay, 16th July 1906 : — 

 4 Imm. dev., 26 to 30 cm. : eggs, -25, '35 mm. : o, 6, 8 mm. : t, 6 mm. : 

 fat, large quantity ; 19 Spents (S. Spt. of previous year), 26 to 29 cm. : 

 eggs, -S-^e mm. : o, 8-17 mm. : t, 9-20 mm. : fat, large quantity ; 20 S. 

 Spr. (of these 4 were full herrings), 26 to 30 cm. : eggs, •4--8 and over : 

 o, 10-22 mm. : t, 18-30 mm. : fat, large quantity, a little ; 3 W. Spr. S, 

 27 cm. : t, 7 mm. : fat, large quantity, some, Some had food in the 

 stomach ; others had not. 



Summary. 



Imm. cJ. — 21 to 23 cm. : t, 3, 4 mm. : fat, large quantity, some. 



Imm. dev. — 26-30 cm. : eggs, -25, -35 : o, 6, 8 mm : t, 6 mm. : fat, 

 large quantity. 



W. Spt. — 18 to 30 cm. : eggs, *l--4 mm. : o, 2-15 mm. : t, 2-16 mm. : 

 fat, great quantity, none. 



W. Spr.— 18 to 31 cm. : eggs, "OS-- 35 mm. : o, 2-11 mm. : t, 2-20 mm. : 

 fat, great quantity, some. 



Spents (of previous summer). — 22 to 35 cm. : eggs, -1, ■3-6 mm. : 

 o, 8-17 mm. : t, 9-20 mm. : fat, large quantity, none. 



S. Spe.— 21 to 33 cm.: eggs, •4-1-0, 1-2 mm.: o, 4-31 mm: t, 5-30 mm.: 

 fat, large quantity, none. 



Winter Spent. — These herrings have, as a rule, a large quantity of 

 abdominal fat. 



The ovaries are usually small, thin, flattened, dry skin, sometimes 

 embossed by the organs which have pressed upon them. They may be 

 reddish in colour, and in the form of a narrow soft band, or they may be 

 plump, with a comparatively large lumen inside. The septa and ridges 

 bear the new crop of eggs. Egg-division was seen in some cases. In only 

 one case was the flabby condition of the reproductive organ noticed. In 

 one small ovary 4 mm. wide, the oviduct was folded longitudinally. The 

 blood vessel was large. The eggs were irregular in size, the largest being 

 •17 mm. in diameter. 



The testis is small, thin, flattened, skin-like. It may be narrow, red or 

 pink in colour, and composed internally of a tough honeycomb spongy 

 structure. The vas deferens is in some cases collapsed. 



One or two cases occurred where the testes of what appeared to be 

 winter spents were not completely spawned. The strands which form the 



