LEPIDOPTERA. 157 
this operation himself, which must without doubt be painful to 
the poor animal :— 
“Its two jaws are the pincers the caterpillar uses in seizing a 
portion of one or other of the tufts of hair; and when it has 
seized it, it tears it out without much difficulty. It at once places 
this against the tissue it has already commenced, in which it 
entangles it at first simply by pressure; it fixes it then more 
securely by spinning over it. It does not leave off tearing out 
its hairs till it has entirely stripped them off. When the cater- 
pillar has taken between its jaws and torn out a whole tuft of 
hair, the head carries it and deposits it on some part of the lower 
surface of the cocoon; but it does not leave the hairs of such a 
large parcel together. The next moment one sees its head 
moving about very quickly; then taking a portion of the hairs 

Fig. 114.—Larva of Acronycta aceris. Fig. 115.—Larva of Acronycta aceris taken 
out of its cocoon. 
from the little heap, it distributes them about on the neighbouring 
parts of the cocoon. If one opens one of these shells before the 
caterpillar has become a chrysalis, the larva, which is quite 
naked, and which was only known by its hair, can be no longer 
recognised.” 
The caterpillar of the Tiger Moth, or Woolly Bear, called by 
Réaumur Marte or Herisson (Chelonia caja, Fig. 116), is covered 
with long inclined hairs. This caterpillar also makes use of its 
hairs for strengthening the tissue of its cocoon; but whether it 
feels the pain more acutely than the former, or whether it 
would suffer more, it does not tear out its hairs. It adopts 
another system; it cuts them. The caterpillar is then enveloped 
