354 Professor E. B. Poulton on colowr-relation 
much smaller than any in II, except the small larva in 
E and 1 in D. 
B. The 5 darkest larve with lichen-covered sticks—Three 
larvee, 1 of which was changing its last skin, were black 
chequered with white markings, which were not quite so 
large as those of the larva in A. Two larvee were very 
dark and unspotted. 
C. The single dark larva with black twigs was changing 
its last skin, and was still dark. 
Hence probably no effect had been produced by the 
surroundings to which the larvie had been exposed since 
hybernation, 
II. THE QUERCIFOLIA LARVZ EXPOSED TO LICHEN- 
COVERED STICKS BEFORE HYBERNATION. 
D. The 3 dark, white-marked larvxe with lichen-covered 
sticks —Two larvee were large in the last stage. One of them 
became much darker after changing its last skin, but still 
remained black with light markings. The effects of their 
dark and light tints were more brownish and yellowish, 
and on the whole darker than those of the 2 large larvee 
in K. In fact, a comparison of D and E did not support 
the conclusion that the larvae were sensitive to their 
environment after hybernation. 
The small larva in D which had lagged behind the 
others had changed its skin and was rather lighter. It 
was still in an earlier stage than any of the others, but 
apparently healthy 
KE. The 3 similar larve with black twigs during and 
since hybernation—Two larvie were large in the last stage 
and remained black-and-white. The third larva was smaller 
and had been injured. It was probably unable to change 
its skin in consequence. 
F. One of the lightest larve with lichen-covered sticks 
throughout—This larva was in last stage, and its lght 
markings had become much darker in tint, being of 
yellowish-brown colour. 
G. Two of the lightest larve with black twigs during and 
since hybernation.—The lighter of the 2 remained about 
as in the previous stage ; the other, the bluish-grey larva, 
had not yet changed its last skin, but was apparently 
