of the Fishery Board for Scotland. 75 
0:06 nm. On 31st October a number of fishes were examined, with the 
following result :— 
Length (mm.) | 57 | 62 | 63 | 82 | 85 | 90 | 94 | 96 | 97 |105| 107/110) 112 117 120 
Diameter of 
largest Eggs 
(mm.) ‘15 
vals 3D | ‘35 | °39 | 39 | -44 be 45 | -61| 66) °5| -64 | 
In the portion of the ovary examined of the specimen at 112 mm. a 
single egg measuring 1:1 mm. was discovered, and in the one atl20 mm., 
another measuring 1:13 mm. Since the fully ripe ovarian egg measures 
18 mm., these specimens evidently indicated the approach of the 
Spawning season, On 27th November the following measurements 
were made: 
Length (mm.) 47 53 66 70 81 85 90 100 110 
Diameter of 
largest Eggs 
(mm. ) -| 08 ail "15 19 “41 “41 “44 56 “49 
In the eggs of -1 mm. and upwards the yolk was fully formed, but the 
ovaries were small. Larger eggs may have been present in some cases, 
but they were not observed. On 30th December a considerable number 
were examined, as given in the Table below, and the larger females 
were found to contain ripe or nearly ripe eggs. Females as small as 
78 mm. (33 inches) would obviously spawn in the ensuing season, 
but in such specimens both the ovaries and the eggs were much 
smaller, the latter measuring from 1:1 to 1:3 mm. Occasionally a 
large fish had also the smaller eggs. The smaller females had eggs 
up to 0:17 mm., and clearly belonged to another series; some at 60 
and 61 mm. had yolked eggs of 0°12 mm., and others at 52 mm. and 
53 mm. eggs also yolked measuring 0-1 mm. Many of the males at 
70 mm. and under had well-developed testes, white and soft ; in one at 
59 mm. they were quite minute. On 14th March a number were 
examined. One female of 106 mm. contained nearly ripe eggs, 
measuring 1:3 mm.; one of 120 mm. was spent, with two or three large 
eggs retained ; others of 98, 95, 96, and 97 mm. were spent, and others 
of 86, 89, 92, 96, 97, and 100 mm. were ripe. A male at 101 mm. was 
ripe. In others the diameter of the largest eggs were as follows :— 
Length (mm.)} 74 73 71 69 68 65 63 63 60 59 | 
Diameter of 
largest Eggs 
(mm.) Sale ias | ol Sem aces “lz eae || SUG Ha elem ec |e 00 
On 30th April most of the females were found to be spent, the ovaries 
being small and shrunken ; in several cases a few fully-sized eggs which 
had failed to be expelled were present. The sizes of females which 
appeared to have spawned were as follows :—120, 118, 112, 111, 110, 
109, 106, 105, 104, 102, 94, 93, 80 mm. The diameter of the eggs 
present in some cases is shown here :— 
Length S| 1740) | alli) Satrlil 109 106 104 68 | 58 56 
Diameter of 
Eggs - 19 16 16 ‘21 18 ‘18 14 | ‘14 14 
*A few large old eggs also present. 
