between lepidopterous larve and their surroundings. 319 
Experi- 
ment. 
I. | Il. Ill. 
Colour of mature larvee. 
5 green, 1 intermediate. 
ae 
1 dark smoky-black. 
1 greenish-brown (inter- | 
mediate). | 
1 greyish smoky-black. | 
ag5 
_ 
oe 
__ 
| 
| 
| 
9 black ( 1 dark brownish, | 
3 with dull greyish patches). | 
1 grey. | 
5 black (overspread with 
grey). 
1 brownish-black. 
= 
) 
“ 
2 
/greenish on sides, and 
6 dark 
patches). 
3 intermediate. 
(with grey 
3. dark 
overspread 
(respectively 
with grey, 
with pale yellowish spots). 
1 green (with brown 
dorsal line and lateral 
patches). 
_ 
2 black. 
2 dark overspread with 
grey. — 
1 bright green. 
2 
2 
2 green, sprinkled with 
grey, 1 greenish inter- 
mediate. 
1 whitish, 2 blackish 
with grey markings. 
1 distinct but dull green 
with brown broad dorsal 
line and shght lateral traces. 
stages of this species. 
A glance at the diagram and results proves conclusively 
that there is no restriction of susceptibility to the younger 
Experiment B® shows the strong 
influence of a black environment applied only to the two 
latest stages, while A! shows considerable effects traceable 
to black which was present in the 2nd stage only. 
TRANS. ENT. SOC. LOND. 1903.—PART IU. 
When 
(cy) 22 
