374 Keplanation of Plates. 
obvious, produced no effect whatever. The appearance 
of this same larva just before hybernation is represented 
in Plate XVII, fig. 4 or 9. The painting of the nearly 
mature larva was made on May 14th. 
Fra, 2. Larva, small but probably in the last stage, exposed to the 
same environments (II, G) both before and after hyber- 
nation, as that represented in fig. 1. Here too it is 
clear that the black-barked twigs which surrounded the 
larva during winter and spring produced absolutely no 
effect. The appearance of the same larva just before 
hybernation is represented on Plate XVII, Fig. 6. The 
painting of the more mature larva was made on 
May 28th. 
3. Larva, nearly mature in the last stage, showing the effect 
of lichen-covered sticks throughout (II, F). The lichen 
was probably Ramalina farinacea. The appearance of 
this same larva just before hybernation is represented in 
Plate XVII, fig. 4 or 9. The painting of the nearly 
mature larva was made on May 25th. 
4. Larva at the same period and exposed to the same 
environments both before and after hybernation as that 
represented in Fig. 1. The larva here represented (from 
Il. E) was the darkest of all the mature larva which 
had been exposed to an environment of lichen before 
hybernation (series Il). There is no reason to sup- 
pose that the black twigs produced any effect in winter 
and spring. The larva was one of the seven darkest 
in series Il before hybernation. The painting was made 
on May 17th. 
Larva, nearly mature in the last stage, showing the effect 
of reddish-brown stems of bramble throughout (ITI, K). 
The specimen represented was one of the four more 
spotted or lightest larve before hybernation, and the 
same relationship towards the other divisions of this 
series (IIT) was maintained during and after hyberna- 
tion. The painting was finished on May 11th. 
6. Larva, nearly mature in the last stage, showing the effect 
reddish-brown stems of bramble before hybernation. 
During and after hybernation the larva was placed in an 
environment of black-barked twigs (III, J). It had 
been one of the uniform brown larve before the winter, 
and there is no reason for the belief that the black twigs 
introduced later produced any effect. The painting was 
finished on May 11th. 
on 
. 
