46 
NEUROPTEROUS INSECTS. 
circles of the antennse ; thorax with two series of 
three blackish spots in each, and two or three late- 
ral spots; wings hyaline, iridescent, having the 
transverse nervures varied with black ; tarsi pale 
brownish-yellow. 
Length to the tip of the wings three-fifths of an 
inch. 
This beautiful little insect is very common. 
When irritated, it diffuses a strong offensive odor, 
similar to that of human excrement. It is the ana- 
logue of the C. perla, L., with which I have 
hitherto confounded it, but, judging by Donovan’s 
figure, it is never so large. Donovan says the 
perla stinks before a storm ; our species has always 
that quality when irritated or alarmed. 
