58 
upon the leaves very late in the reason ; but as I 
cannot be quite clear whether or no a second gene- 
ration is produced, I must leave it as a supposi- 
tion. Those which apjiear late on in the season 
remain in their cell through the winter and a 
portion of the spring months. The fly ju'oduced 
is about the size of a common Red Ant. The 
abdomen and thorax, or the lower and the upper 
part of the body, are slightly united together 
like the Aiit, the head obtuse ; thorax and the abdo- 
men black at the top side, and underneath flesh- 
colour ; wings clear or transparent, with distinct 
ribs or membranes, the underneath wings not 
quite so large as the top ones. To give some idea 
of its size and shape, it might be compared to 
the Red Ant in its winged state. It deposits its 
eggs the latter end of June, upon the top side of 
the leaf, and in a few days, from the influence of 
the sun, the young are brought into animation. 
I have never yet met with any trees which have 
apparently suffered materially by them. The 
greatest evil arising from their attack, except the 
tree should be numerously visited by them, is the 
spotted or unsightly effect which is caused from 
their feeding upon the upper rind and pulp of the 
leaf, leaving the bottom entire, which soon be- 
comes brown or dead to the extent of those parts 
on which the insect has prevailed. 
Fok their Destruction. — Dust the tree 
over with quick lime, at any time of the day, except 
the tree should be Avet, which would cause the 
