23 
appeared upon both embryo and yolk sac, those on the latter being 
the more dendritic, as well as unbranched spots, especially on the 
tail. After a further period of 27i hours, the larva was found to 
have emerged, and it'was then sketched in the living condition (fig. 
8), in the position which it commonly assumed with the yolk sac 
upwards, hut when it turned on its side, the broadly compressed 
form of the larva was observed. It was found dead next day. 
Very few eggs were got in the frequent trials which were made 
during the summer at Cullercoats, hut these were mostly made late 
in the season. One egg of the gurnard was obtained ] to 1 mile off 
Cullercoats, on 19th June. One egg of the brill was observed in 
the surface material got at the first excursion of the Northumber- 
land Coast Club. This was on 24th July, over a depth of 23-26 
fathoms, N.K. of Cullercoats, i.e. some .">-6 miles off. It was noted 
first the same evening, as well as the following characters: diameter 
1-38 x 1’85 mm., oil globule -2."> mm., the pigment according to my 
notes was black on oil globule, yolk sac and embryo; the tail of the 
latter was not yet bent over to the ventral side of the yolk sac. 
Next day some 16 hours later, the egg was sketched (fig. 4). 
The embryo during this time had made some progress, the tail now 
curving round as seen. The pigment on the oil globule was then 
noted to be black and yellow, that on the yolk sac, yellow and 
brown with one or two black spots, that on tin' embryo was brown 
with occasional black spots. 
About 24 hours later, the tail was found to have reached round 
to near the head (fig. 5), and the black pigment was now seemingly 
confined to the portion of the tail next the yolk sac (proximal end), 
and to the oil globule. The brown and yellow pigment was much 
as before, but the dendrites were much elongated on yolk sac. Next 
day it was found to be dead. 
I think there can be little doubt that this egg was that of the 
brill ( Rhombus hrris). 
O/'* 
