Chap. XII.] LEAF-INSECTS. 409 
STICK INSECT' AND MANTIS 
the full - blown 
leaf, and the 
withered tint of 
decay. So per- 
fect is the imita- 
tion of a leaf in 
structure and ar- 
ticulation, that 
this amazing in- 
sect when at rest 
is almost un- 
distinguishable 
from the foliage 
around: not only- 
are the wings 
modelled to re- 
semble ribbed 
and fibrous fol- 
licles, but every 
joint of the legs 
is expanded into 
a broad plait like 
a half-opened 
leaflet. 
