of the Fishery Board for Scotland, 183 
But the facts are sufficient to justify the statement in its broad sense, 
and doubtless the extensive investigations now being carried on will ere 
long show how far it may he incorrect. It is to be noted that it applies 
to the fish in a region in which growth is naturally modified ; if plaice, 
for example, reach maturity in one region at a size less than in another, 
then the maximum size is also less. It is the same with the males and 
females among flat-fishes ; the males, as a rule, attain the mature condition 
at a less size than the females, and their maximum growth is corres- 
pondingly curtailed. As the maximum size of a species of flat-fish is 
approached, the proportion of males diminishes and the proportion of 
females increases ; and all the very large individuals are females. 
I give in the following Table the information such as it exists for a 
number of species, the sizes being in inches :— 
Approximate Size| Approximate Age| Approximate Exceptional 
at Maturity. at Maturity. Maximum Size. | Records of Size. 
Species, 
Female.) Male |Female.| Male. | Fema Male. | Female.| Male. 
Plaice, . =. | 16-17) 18-14 5 4 32 Lat 384 
Com. Dab, . 74 6 | 3 2) 15 13 17 
Mende, |. 8-9 | fal aa Boga Le bitty 
Lemon Dab, . 10 8 4(2)| me | 20 
Mit cca | Reto to tOer) 4 | 28 he 241 
Halibut, 48 30 - P20, Bs 
Megrim, é 12 94 ee | 24 
fe Repeat, 6} -6k7 a 3 2 | 18-14 12 16} 
ee ee) oe ee 4. | 32 .. | (70 tbs.) 
2 15 a Sey ee 
| Cod, . «| 26-27 se a Sage | 15-58 eat he 68 
iefeddocks “t.\|- it u Be et malin: 98 . | 88 
| Whiting, . | 8}-9 ore 18 | 
| Norway Pout, | 44 2 | pete elie | Ne IK Ags | 
| Gurnard, foe 29 Belge edness Sipe oa 
“Angles : 30 27 a(t) 4) — “ | 
The approximate maximum size is as far as possible derived either from 
market measurements or from fish which have been measured on trawlers. 
PLAICE (Pleuronectes platessa). 
A considerable number of collections of plaice were measured, partly 
from Aberdeen Bay and the Moray Firth, as well as from the Solway 
Firth and Lochfyne ; special attention being given to the small forms. 
The total number of plaice dealt with in this paper, whose measurements 
are given in the Tables appended is 11,385, making with those described 
in the previous paper an aggregate of 17,950. 
