oL 
Sclizoneura panicola, Thos. 
(Plate IV, Fig. 4.] 
This species, first described by Dr. Thomas in 1879, is extremely 
abundant and widely distributed upon roots of Panicum and Setaria 
in fields of corn, and occurred likewise, not uncommonly, upon roots 
of sorghum at Champaign, in July. I have as yet found it upon no 
other plants, except in a single instance, where two specimens were 
taken upon the roots of corn in June. The decided preference of 
the species for grass roots is however very clear, since where the 
roots of corn and grass were closely intertwined the Schizoneura has 
been invariably found upon the latter only. 
DESCRIPTION. 
Wingless female-—The body is very broadly convex, sometimes 
suborbicular. The antennz reach about to the end of the thorax, 
are rather thick and heavy, and not tapering. The apical joint is 
shghtly thickened, the third joint longest, the fifth rather longer 
than the fourth, and shehtly gibbous on one side at the tip. The 
beak is long, reaching fully to the hind coxe. The general color is 
white, or a very pale yellowish. The head and thorax and about 
two-thirds of the mesothorax are dusky, as are also a transverse 
band upon the metathorax, one upon the first segment of the abdo- 
men, heavy transverse bands upon the sixth and seventh seoments 
of the abdomen, irregular patches at the tip of the body, quadrate 
blotches on the sides of the abdomen and a few scattered dorsal 
specks. The coxe and legs are dusky, and there is a quadrate patch 
of black beneath the vent, and one upon the sides of the metathorax. 
The two terminal joints of the rostrum are dusky, and a dusky cir- 
cular patch surrounds its base. The two basal joints of the antenne 
are also dusky, and the two terminal ones are nearly black. The 
eyes are red, with a black postocular tubercle. The antenne are 
pilose throughout, the hairs being longer toward the tip. The head 
and whole body are also pilose, with longer hairs at the tip of the 
abdomen. 
Winged female.—This is described by Dr. Thomas as follows: 
“The front wings with the third discoidal vein once forked; third 
vein obsolete at base; first and second veins arising very near each 
other; stigma short, rounded behind; fourth vein nearly straight; 
costal bent outward next to the base, leaving a rather wide space 
between if and the sub-cosial. Antenne short, reaching about to 
the base of the front wing; slightly hairy; third joint rather longer 
than the fourth and fifth united; sixth slightly longer than the fifth, 
with a very short, indistinct, blant spur at the tip. Beak rather 
long, reaching nearly to the hind coxa, slightly hairy. Eyes present 
and of the usual size or nearly so.”’ 
To this description I may add that the head and thorax are black, 
the abdomen pale, with imperfect dusky bands on the first and 
second segments, a quadrate dusky discal blotch, two terminal dusky 
bands, a series of quadrate dusky lateral spots, and two rows of 
_black specks between these and the discal blotch. The antenne are 
dusky throughout, sparsely pilose but not scabrous, 0.57 mm. long; 
the legs are black; and the tip of the abdomen and the band upon 
