NEUROPTEROUS INSECTS. 
17 
yellowish vitta on the basal segment, on which is 
also a lateral tubercle ; remaining segments with a 
spot on the base of each, those on the dilated seg- 
ments are much larger, that on the terminal seg- 
ment occupying all the side, yellow and conspicu- 
ous ; pleura green-yellow, with two oblique, fuscous 
lines ; feet fuscous ; tibia with a dull green line ; 
the dilated tip of the abdomen is very concave 
beneath. 
9 Tubercles of the basal segment of the abdomen 
obsolete; abdomen at tip somewhat less dilated; 
anal appendices two. 
Length two inches. 
Common in June, on the banks of the Wabash. 
It resembles forcipata, Fabr., closely, but the feet 
of that species are yellowish above ; the dorsal line 
of the abdomen is capitate on each segment, and on 
the basal segment trilobate. 
It belongs to the genus Gomphus, Leach. 
10. JE. stigmata. 9 Body yellow; stemmata ra- 
ther large ; thorax with a double brown arcuated 
vitta before, each side of which is an abbreviated, 
oblique, brown line, and another brown line on 
the suture of the pleura ; wings with a very slight 
tinge of yellowish, at their origin ferruginous ; 
costal edge whitish, with two series of minute black 
points ; stigma rather large, blackish ; tergum, each 
segment, excepting the basal and ultimate ones, with 
a longitudinal spot each side, contracted in the 
middle and not reaching the hase ; terminal pro- 
cesses conic, acute, not at all compressed ; thighs 
v lth a brown line above towards the tip ; tibia and 
vol. viii. — 1839. 3 
