44 
NEUROPTEROUS INSECTS. 
fulvous ; pleura and pectus with a few abbreviated 
dusky lines ; wings two, ample, costal margin 
slightly dusky ; abdomen depressed, with three 
brownish punctures on each side towards the tip ; 
seta elongated. 
Length one-tenth of an inch. 
The smallest species X have seen. X caught seve- 
ral of them about the candle, on the evening of Sep- 
tember 4th. They vary in having the brownish 
lines of the pleura and pectus obsolete, or altogether 
wanting. 
Formicaleo, Geoff. 
1- F. obsoletus. Antennas white in the middle ■ 
abdomen with white bands. 
Inhabits U. S. 
Head dull whitish, with a broad, dark, honey- 
yellow band between the eyes ; antenna fuscous, 
middle fourth whitish; thorax dull whitish ; wings 
hyaline ; anterior pair with a few obsolete, small, 
brownish spots or transverse abbreviated lines, two 
of which on the posterior margin are oblique, 1 and 
a somewhat larger one on the costal margin near 
the tip ; posterior pair with fewer spots, about three 
or four subcostal distant ones, and a large one on 
the terminal fourth, and a less obvious apicial one • 
abdomen blackish, with a whitish band on each 
segment ; beneath with a broad blackish vitta each 
side over the feet from the head to the abdomen • 
feet fuscous, posterior pair with a white annulus 
towai ds the tip, and at base and their tibia whitish. 
