34 
NEUROPTEROUS INSECTS. 
Lestes, Leach. 
1. L. rectangularis. Wings divaricated; forceps 
acutely bidentate beneath. 
Inhabits Indiana and Massachusetts. 
$ Body dull greenish, more or less tinged with 
cupreous; head above black, with a very slight 
coppery tinge ; each side of the mouth yellow ; 
labrum bluish yellow ; mandibles piceous at tip ; 
eyes (when recent) ultramarine ; thorax with the 
dorsal suture and lateral vitta, varying from pale 
yellowish to verditer green ; wings hyaline, cel- 
lules chiefly pentagonal ; stigma blackish, its length 
nearly three times greater than its breadth ; abdo- 
men nearly as long again as the wings ; tergum 
with the basal segments a little paler, darker at 
their tips, and with a hardly obvious whitish, inter- 
rupted band at their bases; ultimate segments 
much darker ; anal segment with a longitudinal 
carina beyond the middle ; forceps shorter than the 
two ultimate segments taken together, with two 
oblique, very acute teeth beneath ; beyond the mid- 
dle curved downward and inward, so as to become 
nearly perpendicular to the basal half ; inferior pro- 
cesses almost reaching the incurved tip of the for- 
ceps; beneath pale, whitish, more or less tinged 
with yellowish-green. 
Length over two inches. 
9 Abdomen much shorter than in the male ; ter- 
gum with a more obvious cupreous color ; feet (as 
in the male) pale yellowish, with two black lines on 
the thighs and one on the tibiae. 
