of the Fishery Board for Scotland. 64 
long had very massive otoliths ; they measured about 13:°5mm. in length 
by 65mm. at the deepest part (these are represented by fig. 24). Those 
of a somewhat smaller fish were equally massive but rather shorter, 
measuring about 12°2mm. by 6mm, A number of other specimens of the 
same species have been examined, and measurements of six of them with 
the corresponding sizes of their earstones are given in the Table annexed. 
Earstones. 
ee ne Lengthiof the fish. |= 
; Length. Depth. 
Wie Cel ii. A.) 89mm. About 5‘O0mm. ; 2°5mm. 
18 a5 110mm. 3 60mm. 30mm. 
19 bi 162mm. 3. &:Omms Fully 40mm. 
20 ‘ 210mm. 5. 105mm. 45mm. 
21 5, 11} inches. », 11°Omm. 5°3mm. 
a2 iS ie Pe. a A 4mm: 5‘omm. 
In the larger examples of the brassies referred to here the proportion 
that the length of the earstones bears to the length of the fish is about 
the one twenty-sixth part, but it appears to become greater in the smaller 
fishes as in the case of the haddocks. 
Gadus minutus, Linn. The Poor Cod. 
This species is nearly allied to the last, and appears to possess somewhat 
similar earstones. No specimens are represented by the photographs. 
Gadus esmarki, Nilsson. The Norway Pout. PI. il. a., figs. 25 -28. 
Four specimens of Gadus esmarkii are represented by their earstones 
on pl. ii. a. They measured respectively 63 inches, 52 inches, 47 inches, 
and 4 inches. Their earstones have a tolerably close resemblance to those 
of small Gadus luscus, but they are scarcely so massively formed, and are - 
rather longer and narrower. Those removed from the largest specimen 
of Gadus esmarkit measured about 75mm. in length by fully 3mm. in 
depth, and those of the next three specimens measured about 6°dmm., 
5'2mm., and 5mm. in length, and their depths varied in a corresponding 
degree. The earstones of the largest specimen were, as indicated by the 
foregoing measurements, about the one twenty-second part of the entire 
length of the fish. 
Gadus poutassou, Risso. Couch’s Whiting. Pl. ii. a., fig. 29; pl. iv. 
fig. 5. 
This species is represented by a single pair of otoliths ; they are from a 
fish 155mm. (fully 6 inches) in length, and measure 8°5mm. long by 
nearly 3mm. in depth. In their shape and sculpture they have a general 
resemblance to those of Gadus esmarkii, but are rather more slender and 
elongated. The anterior end is bluntly rounded, the upper and lower 
margins taper in a nearly uniform manner to the sharp-pointed distal 
extremity, and both margins are crenulated. The exterior side is only 
slightly incurved and moderately rugose, and the inner surface is nearly 
smooth, 
