144 Miss Elizabet@Bridges wpon colowr-relation between 
IV point to an opposite conclusion. The larvae in this 
set were those used in the transference experiments : in 
the table I have repeated the results of B (Table III) for 
comparison, 
In the third set, the larvae were placed during pupation 
in compartments lined with variously-coloured papers and 
leaves. The results, so far as they go, seem to show that 
the pupae have a considerable power of adaptation, but as 
in this set I omitted to note the previous history of the 
larvae (they were taken at random from various environ- 
ments), there is no real evidence of the extent to which 
the pupal colours are independent of the larval. I hope 
to repeat this experiment with more success next year. 
TABLE III. 
RECEPTACLE. COLOUR OF PUPAE AND COCOONS, 
: 2 with no cocoon, 1 darkest form as B, 1 rather 
(Crimson sticks). | — lighter. 
2 cocoon of old skins, etc. 1 darkest form, 
1 rather lighter. 
B. 8 hardly any cocoon. Dark brown, smoked 
(Black sticks). with black (Figs. 1, 1a). 
3 cocoon of bits of leaf. Same colour. 
: 6 hardly any cocoon. Cream-coloured with 
(White sticks). rather sparing smoky specks and streaks. 
2 rather more profusely speckled. 1 in 
cocoon of skins, etc., like these (Figs. 2, 2a). 
D. 1 slight cocoon, strong ochreous tinge with 
(Pale green sight black marks. 
sticks), 1 slight cocoon, darkest form. 
, 3 no cocoon, darkest form. 
(Dark lichen- 2 cocoons of bits of bark, same colour. 
covered sticks). 
IV. Note on some experiments on O. bident&ta. 
In the summer of 1909 I experimented with about 20 
bidentata larvae given to me by Prof. Poulton. The 
results are not worth giving in detail, as the forms pro- 
duced were exactly the same as those already obtained 
and described by him.* 
* Trans. Ent. Soc. Lond., October 5, 1903. 
