338 Professor E. B. Poulton on colowr-relation 
Il. G. querezfolra. 
October 16th. Larvee with lichen-covered sticks. Many 
of these larve had also undergone considerable changes 
since September 21st 5 so much so indeed in certain cases, 
that two of the examples set aside for painting had to be 
changed for others which better represented the appear- 
ance borne by the former when they were selected. Of 
the 4 lightest larvae on September 21st only one remained 
greyish (painted October 2nd, shown in Plate XVI, fig. 6); 
3 were now of a brownish tinge (painted October 3rd, fig. 
4, and October 7th, fig. 9, Plate XVII); while the 4th 
had become so much darkér that another brownish larva 
was substituted for painting (painted October 6th, fig. 5, 
Plate XVID). The latter was not, however, as light as any 
of the other 3 set aside on Sept. 21st. Of the other 2 
darker larvee previously selected for painting, the one with 
bluish-white spots had altered, and another more like its 
former appearance was substituted (painted October 9th, 
Fig. 8, Plate XVII). The remaining 6 dark, white-marked 
unpainted larve had not changed, except that the white 
marks upon two of them had become smaller and less 
conspicuous, 
These 6 larvae, with the dark, white-marked one which 
was painted on October 10th, and is shown on Plate XVII, 
fig. 7, were divided ito two groups for hybernation. 
D. Four dark, white-marked larvee, including the darkest 
larva of all the 7 with the smallest white spots, were 
enclosed with lichen-covered sticks. 
KE. Three dark, white-marked larvee, including the 
darkest larva but one of all the 7, were enclosed with 
black twigs of the Turkish oak 
The 3 lightest larves were thus treated. 
F. One larva was enclosed with lichen-covered sticks 
(Plate XVII, figs. 4 or 9). 
G. Two larvee, including the greyish one (Plate XVII, 
fig. 6), were enclosed with black twigs. The other larva 
is represented in Plate XVII, figs. 4 or 9. 
H. The two remaining larvee which had been substituted 
for painting, viz. the brownish larva (Plate XVII, fig. 5), 
and the dark one with bluish-white marks (Plate XVII, 
fic, 8), were enclosed with lichen-covered sticks. 
