INSECTA. | 163 
said to be “complete” (fig. 80). In these insects the larva is 
worm-like, segmented, and usually furnished with eb 
feet, which do not correspond with the three pairs proper to t : 
adult (see figs. 87, 88), though these are usually present as well, 
The larva is also provided with masticating organs, and eats 
voraciously. In this stage of the ati EEE Eap Oe the bays 
constitute what are popularly known as caterpillars” or 
“orubs,” Having remained in this condition for a longer or 
shorter time, and having undergone repeated changes of skin, 
Fig. 80.—Metamorphosis of the Magpie-moth (Phalena grossulariata). 
necessitated by its rapid growth, the larva passes into the 
second stage, and becomes a pupa (fig. 80—see also fig. 87). 
In this stage the insect remains quiescent, unless irritated, and 
it is very often attached to some foreign object, so as to be quite 
incapable of changing its place. In the case of the butterflies 
and moths, the pupa constitutes what is so familiarly known as 
the “chrysalis.”. The body is protected by a chitinous pellicle, 
and in some cases this is still further protected by the dried 
