Reports to various Correspondents . 47 
surface, but sometimes the upper. One favourite place tor them was 
where leaves had been united (and sometimes the blossom) by Winter 
Moth larvae. From observations made it seems that a single larva 
entering a tender blossom bud under certain circumstances stops its 
proper development or may entirely destroy it. This depends on the 
weather. If the nights are warm and the buds open rapidly, then 
the damage is slight; but if frosts keep back development the larval 
Psyllse work protected by the buds, and have so much longer time to 
damage the tender growth. It is therefore very important to check 
the entry of this pest into the bud. This action upon both blossom 
and leaf buds is, I am sure, frequently put down to the work of 
caterpillars, the small Psyllse not being noticed by growers. 
The larvae were first noticed this season in the opening buds in 
the beginning of May, and the last I noticed were seen on the 2nd 
of June; by that time they had all pupated. 
The flat pupal forms (Fig. 7) are pale yellow- 
ish green, the rudimentary wings being the 
same colour ; when any pupae occurred 
between two leaves stuck together with 
silk of Winter Moth larvae, they were much 
yellower than those free on the leaves. The 
dark markings on the tips of the antennae 
are rather variable in extent. Like the 
larva, the pupa passes out little oily 
globules and waxy threads of a white colour. 
The first mature or winged insects appeared 
on the first of June, and continued to hatch 
out until the end of the month. They only 
occurred in small numbers on the apple trees, and, in spite ot 
frequent search, I failed to obtain a supply for exhibit at the Royal 
Agricultural Show, but when beating a neighbouring hawthorn hedge 
great numbers were found, they apparently flying to the hedge for 
shelter, for later on a warm day I observed numbers upon the apple 
trees. These adults appear to take food by drawing out the sap of 
the leaves; but they apparently take but little, for they do no 
damage to the leafage. They continued upon the apple trees and 
hawthorn hedge without undergoing any change during the rest of the 
summer, and commence egg-laying in September. Whether this 
species normally breeds on hawthorn I do not know, but the adults 
certainly exist upon that plant as well as upon apple. 
Blossom has been attacked by them during the past year, the 
