LASIOCAMPIDS. 145 
hatched, and that it does not require a large amount of 
poison to do so. One pound of Paris-green to 100 gallons 
of water, or one pound to 150 gallons of water, sprayed 
upon apple trees, had the effect of burning the foliage and 
injuring the trees very materially. By using one pound of 
this poison to 200, 250 or even 300 gallons of water all 
caterpillars were killed in the course of from one to three 
days. If London-purple is used, one pound to 300 gallons 
of water will do the work. In both cases it is best to add 
to the mixture some lime water, which will neutralize any 
free acid, and in this way prevent injury to the trees to be 
protected. 
THE VALEDDA LAPPET-MOTH. 
(Tolype velleda Stoll.). 
This uncommon insect is sometimes found in its larval 
state (Fig. 146) feeding upon the foliage of the apple, cherry 
Fig. 146.—Tolype velleda Stoll.; caterpillar. 
, and plum; it also feeds on the oak, elm, lilac and poplar. 
The caterpillar is hairy and it hides so well in the cracks of 
the tree, into which its body fits very tightly, that it is not 
easily detected; it looks very much like an excrescense of the 
bark, especially as the side fringes, which border close to the 
under surface and are composed of spreading tufts of light 
gray, mingled with black hairs, hide so thoroughly the edges 
of thecaterpillar’s body. It has asmall and flat head, nearly 
hidden between two projecting tufts of hair from the second 
segment; it is bluish-gray and is marked with numerous 
longitudinal lines; on top of segment three there is a trans- 
verse black band, most distinct when the insect is in motion. 
On top of each segment are twd warts, those on segment 
three in front of the black band are the largest: each of these 
