66 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
Mr. P. Barry, of the Mount Hope nurseries, Rochester, has forwarded to us sections 
of the body of some young apple tr e es, which were B80t to him from a correspondent 
in Hillsborough, in southern Ohio, who states that in that vicinity the borer, which 
ih contained in the specimens sent, is doing great damage to the apple trees, and that 
he has had peach trees also killed by this same worm. From au examination of these 
specimens, it appears that this insect is quite similar to the common apple-tree borer 
in its habits. The parent insect deposits its eggs ou the bark, from which a worm 
hatches, which passes through the bark and during the first periodsof its life consumes 
the soft sap-wood immediately under the bark. But when the worm approaches ma- 
turity and has become stronger and more robust, it gnaws into the more solid heart- 
wood, forming a flatfish, and not a cylindrical hole such as is formed by most other 
bonis, the bniTOW which it excavates being twice as: broad as it is high, the height 
measuring t e tenth of an inch or slightly over. It is the latter part of summer when 
these worms thus sink themselves into the solid heart- wood of the tree, their burrow 
extending upwards from the spot under the bark where they had previously dwelt. 
On laying open one of these burrows I find it is more than an inch in length, and all 
its lower part is tilled and blocked up with the fine sawdust-like castings of the worm. 
Thus, when the worm is destined to lay torpid and inactive during the long months 
of winter, it has the forethought, so to speak, to place itself in a safe and secure re- 
treat, withiu the solid wood of the tree, with the hole leading to its cell plugged up 
so as effectually to prevent any enemy from gaining admission to it. 
Fig. 18.— Mine or burrow made by the apnle flat-headed buret (C. femorata) in the white oak, nat. 
size. — Packard del. 
Still, this worm is not able to secure itself entirely from those parasitic insects 
which are the destroyers of so many other species of its race, and which, as is cur- 
rently remarked, appear to have been created for the express purpose of preying 
upon those species, in order to prevent their becoming excessively multiplied. We 
should expect that this and other borers, lying as they do beneath the bark or 
within the wood of trees, were so securely shielded that it would be impossible 
for any insect enemy to discover and gain access to them, to molest or destroy 
them. But among the specimens sent me by Mr. Barry is one where the worm has 
been entirely devoured, nothing but its shriveled skin remaining, within and upon 
