between lepidoiJtero^LS larva} and their sicrro'undin;/s. 341 



G. Tiro of the 3 lightest lariw, with black twigs. — Both 

 larva? were healthy and irritable ; they had evidently eaten. 

 One was resting on the hawthorn branch and 1 on a 

 black twig. They still remained very light, like that 

 described above (F), and were quite unaffected by their 

 dark surroundings during hybernation. 



H. The 2 Ia7w/B — the brovmish one and that -with bluish- 

 white spots — loith lichen-covered sticks. — Tt is improbable 

 that anything had been eaten, and these larvae did not 

 appear to have emerged from hybernation. The one with 

 bluish-grey marks was upon a lichen-covered stick : it was 

 shrunken, and it appeared doubtful whether it would 

 survive. The other was still attached to its foot-hold on 

 the hawthorn branch, and had evidently not moved during 

 the winter. It was very lichen-like, and entirely unchanged 

 by its winter environment. 



III. THE 11 QUERCIFOLIA LARV.E WITH BROWN 

 BRAMBLE-STEMS BEFORE HYBERNATION. 



I. Four of 7 nmformly hroivn larvx,, with lichen-covered 

 sticks. — All were healthy and had eaten freely : 3 were 

 on the hawthorn branch, 1 on the muslin. All were 

 distinctly brown. 



J. Three of 7 uniformly broion larvae, with black twigs. — 

 One larva was dead, while 2 healthy ones had evidently 

 eaten. Both were on the black twigs, and possessed the 

 same dark brownish ground-colour with brown patches as 

 the 4 last-mentioned larvse (I). 



K. 7'Ac 4 most distinctly spotted or lightest larvm, with 

 broion stems. — One larva was dead, while 3 healthy ones 

 had evidently eaten. All 3 were on the hawthorn-branch. 

 This set still included the most distinctly white-spotted 

 individuals of the whole 11. It was evident that no 

 change occurred during hybernation. 



IV. THE 14 QUERCIFOLIA LARV.i: UPON GREEN LEAVES 

 AND SHOOTS OF THE HAWTHORN. 



L. Seven larvse enclosed in a muslin bag containing a 

 branch of the hawthorn. — One larva was dead, 3 were on 

 the branch, 2 on the muslin, while 1 became detached in 

 removing the bag. All had left their foot-holds, with the 

 doubtful exception of one on the branch. All 6 were 

 healthy and irritable, and most of them had evidently fed ; 



