NEUROPTEROUS INSECTS. 
31 
Length one inch and a half. 
Resembles exusta, but differs in the number of 
costal cellules and in the form and length of the 
anal processes. 
It was sent to me by Dr. Harris. 
20. L. tenera. Wings with an abbreviated band 
and subbasal spot. 
Inhabits Indiana, Pennsylvania, and Massachu- 
setts. 
? Body fuscous ; frontal vesicle yellowish, brown- 
ish above ; eyes contiguous above ; thorax with two 
broad glaucous vittae before ; pleura with two 
oblique, glaucous wide lines ; wings hyaline, a fus- 
cous, undulated band on the middle, not reaching 
the thinner margin; a fuscous spot midway be- 
tween the band and base, somewhat larger on the 
posterior wings ; costal margin slightly tinted with 
ferruginous ; stigma brown ; anal membrane small, 
white ; abdomen rather wide, second and third seg- 
ments with a transverse, elevated line on their mid- 
dle ; feet yellowish. 
Length nine-tenths of an inch. 
It has some resemblance to L. varia, Linn., but 
is a very different species. It is not uncommon, 
but is more limited than some other species to the 
immediate vicinity of ponds and sluggish waters. 
21. L. tenuicincta. Small ; wings ferruginous. 
Inhabits U. S. 
Body fuscous, small ; eyes meeting above ; front 
ye low , above fuscous ; thorax immaculate, some- 
\\ hat hairy ; pleura with about two yellow spots ; 
