208 
IOWA ACADEMY OF SCIENCES. 
The adults are short and compact, with a rounding pointed 
vertex and broad, almost truncate elytra. In color they are 
rich brown with the tip and two concentric bands on the vertex 
lighter, and two bands of lighter on the elytra, one at the base 
and a broader one back of the middle. On these bands the nerv- 
ures are distinctly white. la form and ornamentation closely 
resembling D flori Fieb, but readily separated by the genitalia. 
Length, 3.5 mm.. 
The larvae are more elongated than those of inimicus and have a nar- 
rower and more definitely angled vertex. They are colored very much as 
in the adult, hub the markings are different. There is a narrow median 
line of white extending from the tip of the vertex to the last abdominal 
segment, where it broadens and nearly covers the tip; the inner margin of 
the eyes, a concentric band near the point of the vertex, and two spots just 
back of the center on either side are lighter. A broad marginal stripe 
from the eye back, an indistinct, narrow one from the inner margin of the 
eye, which may break up into white spots, one on the posterior margin of 
each abdominal segment, and a second row of dots midway between the 
first and the marginal stripe on either side, complete the white markings 
of the body. The face is light with fuscous striations. 
The larvas were first taken sparingly from upland prairie 
the second week in June. They were full-grown and were 
probably belated ones, as the adults had been taken during the 
first week. On June 16th the first observation on wooded pas- 
tures was made and the adults were swept in immense numbers 
from rank blue grass. They continued to be found in great 
numbers whenever observed throughout the remainder of the 
season. The larvae were next observed July 11th, when they 
were somewhat over half -grown, and by the last week in July 
they were full-grown; abundant, and fresh looking adults were 
also numerous. Again on the 5th of September nearly full- 
grown larvae were observed to be numerous, as also were the 
adults. Later in the month the larvae were becoming rare and 
the adults still very plenty, as they continued to be through- 
out October. Six females dissected on the 27th of October 
showed no signs of eggs, from which it might be inferred 
that they had been deposited. On this assumption, which coin- 
cides well with the early appearance of the spring brood of 
larvae, the following arrangement of broods would seem very 
probable and harmonize well with the dates given above. 
First brood of larvae through May and the first week in June, 
adults from the last week in May until the middle of July; sec- 
ond brood of larvae, last week in June until the first week in 
August; second brood of adults from middle of July through 
