334 
MOTHS AND BUTTERFLIES. 
colors, and some are supplied with soft horns or filaments growing 
from various parts of their bodies. At the back of the head of the 
Metamorphosis of Papilio. 
larva is situated a forked organ giving off a powerful odor, which 
is doubtless used as a means of protection against its various ene¬ 
mies. When not in use this organ is retracted and entirely concealed. 
The larvm feed on various trees and herbaceous plants, but are 
