. 
340 Professor E. B. Poulton on colowr-relation 
tf 
its skin probably since hybernation: the old skin was 
found in the muslin bag. 
B. The 5 darkest larve with lichen-covered  sticks.—AlIl 
the larvee were in the same healthy and vigorous condition 
as those just described, and had eaten the buds of the 
hawthorn. Every trace of the winter torpor had dis- 
appeared, and they moved freely when touched. The 
larvee were uniformly dark brown, and quite unaffected by 
the presence of the lichen. Four were resting on a branch 
of the hawthorn, while one was on the muslin. 
C. The 6 dark larve with black twigs—Three were dead 
and dried up, 2 in the bag and 1 still fixed to a branch of 
the hawthorn. Of the hving larvie, 2 were fixed to the 
muslin and 1 to a branch. One larva appeared to be 
unhealthy. One had changed its skin, and the hawthorn- 
buds had been eaten. All the Jarvee, including the dead 
ones, were uniformly dark. 
It was clear from this comparison that no change had 
been wrought by the winter surroundings. 
IJ, THE 12 QUERCIFOLIA LARVA WITH LICHEN-COVERED 
STICKS BEFORE HYBERNATION. 
D. The 4 dark, white-marked larve, including the darkest 
of the 12, with lichen-covered sticks ——These larvee had 
evidently eaten, and were healthy and easily disturbed. 
Three were on branches of the hawthorn, and 1 on a 
lichen-covered stick, but all had left their silken foot-holds. 
All retained the appearance they possessed before hyberna- 
tion: the contrast between dark ground-colour and lght 
markings was weakest in the larva on the lichen-covered 
stick. 
K. The 3 dark, white-marked larve, including the darkest 
but 1 of the 12, with black twigs—All 3 larvee were on the 
hawthorn branch, and were in the same condition as the 
above-described set (D). One was resting on a silken 
foot-hold, but this was probably accidental, as there was 
no trace of torpidity. All possessed the lichen-like 
appearance borne before hybernation. 
F. One of the 3 lightest larvx, with lichen-covered sticks.— 
The larva was resting on the muslin. It was doubtful 
whether anything had been eaten, but the larva readily 
moved on disturbance, and was not resting upon a foot-hold., 
It still semained one of the three lightest larvae, and had 
not undergone any change during hybernation. 
