94 Dr. T. A. o% CalloplirTjs avis. 
liours to touch it. When jhaced on Ulex europaeus flowers 
they at once settled down and soon began to feed. 
H aving done so twice before, I again placed a half- 
grown larva of 0. avis on mixed flowers of Ulex europaeus and 
Cytisus scoparius, and another on flowers of Cornus san- 
guinea. Left for 24 hours the larvae on each occasion starved. 
Larvae of C. ruhi, newly hatched, placed on flowers of 
Cornus sanguinea, went for the open flowers and did some 
eating; next day, however, they had eaten very little, and 
were very restless, three of them being down on the stem ; 
they became quite pacified and settled down when given 
blooms of Ulex. 
Larvae of C. rubi placed on Heliantheimiin at once 
attacked the flower-buds and appeared to thrive on them ; 
one then placed on Eroclimii attacked a flower-bud, but, 
that demolished, and there being no other, it and a second 
larva starved rather than touch the leaves or any other 
part of the plant. Larvae given buds of bramble, made 
deep holes in the buds, but after a time and after seeming 
to be quite at home, left them and seemed very discon¬ 
tented. First-instar larvae placed on Goriaria. starved 
rather than eat it; last-stage larvae ate it sparingly, but 
in two days were smaller rather than larger, got on a little 
better for a day or two, but then were obviously doing so 
badly that they were restored to broom flowers. 
C. avis refused any of the ordinary flowers loved by 
ruhi, such as gorse, broom, Sp)artiuvi jttnceum, etc. 
I fed my young larva on the flowers, and they seemed 
somewhat inditferent what portion they ate, but as the 
male flowers rapidly become useless on the stamens burst¬ 
ing, I found them to take more especially to the female 
flowers, clearing out the immature fruits. When they 
were in their second instars I found them eating such 
portions of leaves as I had given them with the flowers, 
and on giving them leaves they seemed to prefer them to 
the now not too tender flowers (or rather fruits). Thereafter 
I fed them on leaves, and I owe many thanks to Monsieur 
Boixo, the “ Roi du Canigou,” for sending me supplies of 
leaves on which to feed my larvae after my return to England. 
The last larva hatched on May loth, and on May 18th 
the first larva is supposed to be in third instar. 
In the first instar the larva is a greyish green, or even perhaps 
cinereou.s, but pale and in a sense colourless, tlie head black and the 
