GO 
The top pair of wings arc a little longer than its 
body, its head similar to that of the house fly. 
About the latter end of June it deposits its eggs upon 
the top side of the leaf, and iii a few days after 
the young are brought into existence. The little 
miner does not survey and bore in various direc- 
tions in seai-ch of the most valuable productions, 
but contents itself with these possessions allotted 
to it by its parent, where it immediately com- 
mences perforating its way into the body of the 
leaf, and there it labours in its mine, which is 
chiefly confined to a circular spot round about its 
first possessions ; but it completes its work in such 
a manner, that only the upper and bottom cuticle 
of the leaf is left, no doubt for self-protection. 
In this apparently solitary cell it remains without 
quitting it for about six weeks, when it leaves 
it to undergo its transformation, as already men- 
tioned. The portion of the leaves thus infested 
assumes a brown inflated appearance, and has no 
doubt been productive of much surprise, and is by 
some misrepresented as being produced by the 
scorching rays of the sun at a time when limpids 
of water have been lodging on the leaves. These 
.spots are most generally in a circulai* form, at least 
for a considerable time after the commencement of 
the animal’s feeding, which is caused by its ^nir- 
suing and consuming a circular course round the 
place it first enteretl. It repeats and extends its 
circuitous route as food is required, sometimes to 
the extent of tlie greatest portion of the leaves. 
