356 Professor E. B. Poulton on colowr-velation 
than the lightest in I as regards its pale patches, but 
distinctly lighter as regards its ground-colour, And this 
comparison only holds for a single exceptional dark larva, 
All others in II were far lighter than any in either I or ITI. 
1V. THE QUERCIFOLIA LARV EXPOSED THROUGHOUT TO 
THE LEAVES AND SHOOTS OF THE HAWTHORN. 
Only 6 larvee remained alive, and of these but 2 were in 
the last stage. Four larvae possessed a ground-colour very 
like that of series III, but the white patches were far 
larger, and tended to spread as a greyish shade down the 
sides. The light patches were, however, much smaller 
than in the larvee of series II. One of the smallest larvae 
was dark with very small white patches, like one of the 
darkest of III. A dying larva, unable to change its skin, 
was intermediate between this latter and the 4 first- 
mentioned larve. 
The colours of these larvae in series ITV seem to have 
been influenced by the brownish and greyish twigs and 
shoots of the hawthorn. 
Last GENERAL COMPARISON OF THE QUERCIFOLIA 
LARVE AFTER HYBERNATION, MAY 25TH. 
Of series I it was recorded that the single larvae in A 
and 2in B were black with conspicuous white markings ; 
while 1 in B, 1 in B?!, and 2 in C were dull black with 
only a pair of small inconspicuous white markings. 
Of series IT nothing is recorded which is not contained 
in the description of cylinders D to G. 
Of the 4 larve then remaining in III it was noted that 
the larvee in K much resembled the black-and-white ones 
in A and B; while the 3 in I and [' were dull blackish 
with the pale markings very inconspicuous. 
Only 2 larvee remained alive in IV. The brownish 
ground-colour of both was much clouded and overspread 
with grey, and the pale patches tended much to spread 
downwards, becoming grey and clouded especially towards 
the ventral surface. 
TRANSFER EXPERIMENTS WITH THE LARVA OF 
AMPHIDASIS BETULARIA IN 1896. 
A female moth, captured at Oxford, laid a small batch 
of eggs, which provided the material for the following 
