42 
NEUROPTEROUS INSECTS. 
line on the middle, between the third and fourth 
nervures ; feet greenish ; anterior and intermediate 
pairs of thighs biannulate with blackish, posterior 
pair tipped with dusky ; tergum with the posterior 
edge of the incisures black ; setse immaculate. 
Length nearly three-tenths of an inch. 
The small black spot on the middle of the costal 
margin is very obvious. The abdomen at tip is 
more or less obviously ferruginous. 
2. B. arida. Brownish ; posterior pairs of feet 
and setse white. 
Inhabits Indiana. 
Body reddish-brown, with dusky incisures ; head 
rather prominent, whitish, varied with ferruginous ; 
vertex with a small black spot each side on the 
orbit ; eyes rufous, with a whitish vitta ; stemmata 
prominent, approximate; anterior one nearly as 
large as the others ; wings immaculate, inferior pair 
more than one-third the length of the other ; ante- 
rior tibise whitish, obscure at base and tip ; posterior 
pairs of feet and setse greenish- white ; tergum with 
the posterior margins of the segments 
Length two-fifths of an inch. 
It occurs about the middle of June. 
3. B. verticis. Yellowish-white; head and dou- 
ble thoracic vitta ferruginous. 
Inhabits Indiana 
Body yellowish-white ; head sessile ; vertex fer- 
ruginous ; thorax with two ferruginous vittse, con- 
fluent before, and becoming obsolete behind ; wings 
with the nervures, except those of the margin, 
