552 ENTOMOLOGICAL INSTRUMENTS, &C 
them in woods, under trees, &c, as above directed', 
keeping them in some of their native earth till they are 
disclosed ; or he must collect larva, and breed them ; for 
which I shall now give you some instructions. — The in- 
sects we are particularly concerned with under this head 
are the caterpillars of Lepidoptcra and of the saw-flies 
(Serrifera). If, however, in our entomological ram- 
bles we discover the larva2 of insects of other Orders 
upon their appropriate food, we may often attempt to 
breed them with success : but as you will seldom thus 
get species that you will not also meet with in their 
imago state, and the general directions for breeding will 
include almost all, I shall principally consider the best 
mode of breeding caterpillars and pseudo -caterpillars. 
The first thing is to collect them. In beating the trees, 
bushes, and plants, while hunting for Coleoptera, &c, the 
Entomologist will often displace caterpillars, which, if 
unknown, he should put into a pill-box with a portion of 
their food : but Lepidopterists often sally into the woods, 
&c, for the express purpose of collecting these only. 
When engaged in this employment, the best plan is to 
take a sheet with you, and when you mean to beat the 
branches of any tree, place it as near them as you can, 
upon four or more sticks fastened in the ground, so as 
to leave the upper surface concave, and it will receive 
the falling caterpillars when you beat. If you aim at 
the pseudo-caterpillars of the Cimbicida, you must turn 
your attention principally to the different species of sal- 
lows and willows (Salix). Your spoils you will put into 
boxes with their food, as above directed, to bring them 
home. 
a See above, p. .v.'!*. 
