OWLET-MOTHS. 163 
sects it is of course best to spray them with Paris-green or 
London-purple, in the proportion of a teaspoon!ul to a 
pailful of water, to which should be added some lime-water 
to neutralize any free acid. In Germany the foresters pro- 
tect trees by the use of ‘“‘Raupenleim”’ or dendrolene; this is 
a sticky material painted in a ring or band around the trunk 
of the tree and which prevents the worms from ascending. 
A wide layer of fluffy cotton-batting, tied at the bottom and 
folded over to form a cone, is a good substitute for the Rau- 
penleim, which can, however, now be bought in the United 
States. 
There are other genera of cut-worms which are injurious 
to fruit and fruit trees. Mamestra confusa Hub. has been 
found feeding upon the foliage of apples; so has M. assimilis 
Morr., and even M. picta Harr., the Common Zebra-cater- 
pillar of the Cabbage (Fig. 161) is not averse to eating 
apple leaves. 
THE GLASSY CUT-WORM. 
(Hadena devastatrix Brace). 
This insect belongs to another genus of cut-worms. The 
glassy-looking caterpillar is of a shining pale-greenish color, 
Fig. 162.—Hadena devastatrix Brace. After Riley. 
with a brownish-red head and a dark brown and horny 
cervical-shield. It has on each ring a number of shining 
dots, from which arise single hairs. The ashen-gray moth 
is marked with black and white spots, streaks and dots; the 
hind-wings are pale and brownish-gray. 
