tomology.” In the fifth volume of the “ New England 
Farmer ” I have given the history of this insect, have men- 
tioned the principal authors who have noticed it, and rec- 
ommended preventive measures, which have been found 
effectual in protecting the peach-tree from its most serious 
attacks. 
The eggs, from which these borers are hatched, are 
deposited, in the course of the summer, upon the trunk 
of the tree near the root; the borers penetrate the bark, 
and devour the inner bark and sap-wood. The seat of 
their operations is known by the castings and gum which 
issue from the holes in the tree. When these borers are 
nearly one year old, they make their cocoons either under 
the bark of the trunk or of the root, or in the earth and 
gum contiguous to the base of the trees ; soon afterwards 
Fig 102 they are transformed to chrysalids (Fig. 162), 
(Elate V. Fig. 7, chrysalis from which the moth 
has escaped,) and finally come forth in the 
winged state, and lay the eggs for another generation of 
borers. The last transformation takes place from June to 
October, most frequently, however, during the month of 
July, in the State of Massachusetts. Here, although there 
are several broods produced by a succession of hatches, there 
is but one rotation of metamorphoses consummated within 
a year. Hence borers, of all sizes, will be found in the 
trees throughout the year, although it seems to be necessary 
that all of them, whether more or less advanced, should 
pass through one winter before they appear in the winged 
state. 
Under its last form, this insect is a slender, dark-blue, 
four-winged moth, having a slight resemblance to a wasp 
or iclineumon-fly, to which it is sometimes likened. The 
two sexes differ greatly from each other, so much so as to 
have caused them to be mistaken for two distinct species. 
The male (Plate V. Fig. 6), which is much smaller than 
the female, has all the wings transparent, but bordered 
