at the middle of the vertex, followed by a second heavier 
metimes interrupted and sometimes not, the two being nearly 
by a bar at the ends of the first. 
;i much as in nigrifrons, but yellow, with a median black 
and black transverse lines interrupted in the middle. Cheeks 
|ss black than in the other species. Pronotum about as in 
i ms, but the dark tint extending farther forward, leaving only 
ow margin of definite yellow, which is sometimes blotched 
| Jack in front. Scutellum with black impressed line much 
r, usually somewhat lobed posteriorly, and with two round 
iots in front of it upon the middle of the scutellum. The 
of the mesonotum extends farther back than in the other 
, reaching sometimes to the middle of the scutellum, which is 
narked in front by an irregular band of black, sending two 
riangular processes backwards, with a smaller process between 
*3 green. Upper margins of the thoracic plates much washed 
ellow. Thighs striped with black rather than banded. Eos- 
black. Fourth ventral segment almost entirely yellow, the 
|j and third with a median yellow stripe. Hypopygium of the 
dark, connexivum yellow, slightly blotched with blackish, 
es of the female chiefly yellow, somewhat dusky above, 
n black, the penultimate segment broadly edged posteriorly 
ellow. 
species was first brought to our notice as an injurious insect 
53, 1884, when it was collected by Mr. Garman in fields of 
oung wheat near Decatur, in such numbers as to suggest the 
feility of its injurious influence. It was this spring collected 
:>-e numbers from young wheat at Marshall, May 22, and at 
Union on the 24th, where it seems to have been very abun- 
! At DuQuoin, on the 7th of June, it was found associated 
he previous species in wheat, and August 4, a few specimens 
ollected from sorghum at Champaign. It has occurred rarely 
i young corn. 
