64 
POPLAR. 
The habit of the Goat Moth is to lay her eggs at the lowest part 
of the tree, and a badly infested tree may often be known by the wood 
chips thrown out from the caterpillar workings, which lie on the 
COSSUS LIGNIPERDA. 
Goat Moth and chrysalis.* 
ground close to the trunk, as well as by the moisture where sap is 
oozing from their gnawed-out tunnels ; likewise by the very offensive 
smell of the caterpillars, which thoroughly impregnates their tunnels 
and all about them, and from which the Goat Moth takes its name. 
The eggs are laid about the middle of the summer in crevices in 
the bark, and the caterpillars which hatch from them feed at first in 
the bark or just within it, and gradually, as they grow, penetrate into 
the solid wood, where they live for three years, and from their great 
size, likewise the numbers they are sometimes found in, they do great 
damage, or sometimes entirely kill the tree. 
Caterpillar of Goat Moth (not full-grown). 
The above figure gives the appearance of the caterpillar when 
about two-thirds grown. When quite young it is pink, almost 
* The caterpillars of this Moth feed in Poplar, Willow, Elm, Oak, Lime, and 
Beech, as well as in Apple, Pear, Walnut, and other trees. 
