INSECTA. ass 
Fig. 176.—THE STAGES OF DRAGON-FLY. 
Larva of Dragon-fly catching prey (a larval May-fly) by the labium, On right’ 
the perfect insect is emerging. 
Fig. 177.-THe May-FLy (Zphemera vulgata ). 
ORDER VI.— Orthopeera. 
The mouth parts are of the “biting” type; the first pair 
of wings are chitinous and form covers for the second pair 
which are membranous. The metamorphosis is incomplete 
or absent. 
