INSECT SIPPERS AND GNA IVERS. 
247 
Fig. 84. 
cocoons of the Procession-moths, which climb the 
oak-trees at night to feed, you will find all enclosed 
in one large nest of silk, for these caterpillars live 
in companies in a hanging web, and when they are 
ready to remodel 
their bodies, they 
strengthen the web 
with their moulted 
skins, and lie all 
together, each spin- 
ning his tiny cocoon 
round his body. 
Again, there are 
many caterpillars 
which have not suf- 
ficient silk to spin 
a whole cocoon, and 
they have learnt 
otherdevices. Thus, 
some of the sphinx 
caterpillars make 
cocoons of dried 
leaves, WOVen to- Psyche graminella. 
P"Cther and lined g, Front part of the caterpillar with the 
' . , .,, i 111 six true feet ; c, case of straw, and grass 
Wltll Silk ; an covering the rest of the caterpillar, and in 
Up in these, they lie which it will hide as a chrysalis ; m, perfect 
under the cover of moth * 
some stone or bush. The hairy caterpillars also, many 
of them use their hairs for the cocoons, binding them 
together with a little silk ; while a group of moths 
called Psyches (Fig. 84), because they are so small and 
light, come from caterpillars, which, as soon as they are 
born, take pieces of straw, or leaf, or grass, and bind 
