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that it is not probable that they will ever be very seriously injuri¬ 
ous to truit trees. The greatest objection to them is the disfigure¬ 
ment which their extensive webs produce both from fruit and 
ornamental trees. I do not know that any predaceous or parasitic 
insects prey upon them. Indeed they are so protected during the 
day, that it is not easy to comprehend how any insect enemies 
could get access to them. 
An interesting question here presents itself, whether the para¬ 
sitic insects are active in the night. We often see them plying 
their busy avocation in the day time, but the minute size of most 
of them precludes the possibility of our detecting whether they 
extend their operations into the night. 
These are gregarious insects and are therefore easily removed 
by hand, or, where they ase out of reach, by thrusting a pole into 
their nests and turning it round and round so as to entangle them 
in their web. Shaking and lime-dusting are here of no avail. 
One ot my neighbors told me that he effectually removed them 
from his garden trees by tearing open their nests and sprinkling 
in some Paris Green with which he had been killing potato-bugs. 
Put such applications are unnecessary. The true remedy consists 
in removing the nests by hand as soon as they make their appear¬ 
ance. 
These insects pass the winter in the chrysalis state, and make 
their appearance in June and July in the form of white moths, 
without spots, with tawny yellow fore thighs and blackish feet, 
and measuring a little more than an inch across the expanded 
wings. A figure of the cocoon, and an imperfect one of the cat¬ 
erpillar, may be seen on plate vn, figs. 10 and 12, of Dr. Harris’s 
treatise on insects injurious to vegetation. 
THE .LESSER APPLE LEAF-FOLDER. 
(Tortrix malivorana , N. sp.) 
Order of LEPIDOPTERA. Family of Tortricid,®. 
A pretty little bright-orange, round-shouldered moth, the 
larva of which is a small, greenish, naked caterpillar, with a pale 
amber-brown head and whitish incisions. In some specimens the 
