92 Psyche [August 
or 10. Cornicles 0.176 mm. long, tapering near the base, then very 
slightly enlarged, then again slightly tapering; distal extremity 
with a distinct flange and the entire cornicle distinctly imbricated. 
Hind tibize 0.656 mm. long. Ocelli present, thoracic structure 
suggesting that of an alate form. Length from vertex to tip of 
cauda 0.944 mm. 
Intermediate male: General color similar to that of the apterous 
form, the abdomen, however, appears to be slightly lighter. 
Antennz with the following measurements: Segment III, 0.304 
mm.; IV, 0.192 mm.; V, 0.192 mm.; VI (0.08+0.416). Sensoria 
present as follows: Segment II, with about 22 circular sensoria 
not arranged in a row, IV, with about 20 sensoria, V, with about 
16. Cornicle 0.192 mm. long, similar in shape to the cornicle of 
the apterous form. Wings represented by leaf-like structures 
about 0.368 mm. long and about 0.192 mm. wide. These struc- 
tures sometimes show one or two veins. Head and thorax like 
that of the alate form. Hind tibiz 0.672 mm. Length from ver- 
tex to tip of cauda 1.04 mm. 
Alate male: Color similar to that of the forms previously de- 
scribed. Wings hyaline, veins and stigma dark. Antenne with 
the following measurements: Segment III, 0.32 mm.; IV, 0.256 
mm.; V, 0.256 mm.; VI (0.096 mm.+0.448 mm). Sensoria as 
follows: Segment ITI, with about 17 circular ones more or less in 
a row; IV, with about 17; V, with about 17. Forewing with the 
stigma near the distal extremity of the wing, so that it is quite 
curved on its costal margin, media once branched, cubitus distinct, 
anal absent, length 1.152 mm. Hind wing about 0.656 mm. long 
and with one oblique vein. Cornicles 0.16 mm. long, similar to 
those of the other forms already described. Hind tibia 0.672 mm.; 
length from vertex to tip of cauda 0.96 mm. 
Found on the sedge in company with the oviparous females, 
often very close to the ground. 
Ovipara. 
The oviparous form occurs on the sedge at the same time as the 
males, and these forms are present depositing eggs until cold 
weather. 
First instar. General color dusky with dark appendages. An- 
tennze of four segments with measurements as follows: Segment I, 
