1386 ARBORETUM AND FRUTICETUM. PART III. 
elms planted there, by eating the parenchyma, and leaving the skeleton of the 
leaves dry and brown, that, at first sight, he supposed they had all been 
blighted by some neighbouring manufactory of acid. These larvz are blackish, 
and exhale, when crushed, a most disagreeable smell. They coil up the 
moment they are touched, and let themselves fall to the ground. The perfect 
insect is extremely sluggish in its movements, counterfeiting death, in cases of 
danger, rather than unfolding its wings to fly away. (See Dict. Classique 
d’ Hist. Nat., art. Galeruque.) It conceals itself in the interstices of the bark, 
under stones, and between the bricks of walls ; and will produce, sometimes, 
three generations in the course of onesummer. The third is a species of Cés- 
sus (Céssus Lignipérda Fab.), or Goat Moth ( fig.1233.), which has destroyed 
innumerable trees, particularly in the neighbourhood of Paris. The larva 
(fig. 1233. a) is about 3 in. long, with its body sprinkled with slender hairs ; 
it is of a reddish brown on the back, becoming yellow beneath, with eight 
breathing-holes on the sides, and a black head. It exhales a most disagreeable 
odour, which is produced by an oily and very acrid liquor, which it discharges 
from its mouth; and the use of which is supposed to be to soften the wood be- 
fore it devours it. This liquor has a strong scent, like that of a goat, whence the 
English name of the insect is derived. The pupa (c) is brown, the abdominal 
