222 
IOWA ACADEMY OF SCIENCES. 
ATHYSANUS BICOLOR VAN D. 
Canadian Entomologist, XXIV, p. 114, 1892. 
This species was described from Kansas and Mississippi, and 
had been reported from Iowa under the name virgulatus Uhl 
(a MSS. name). The adults have nearly the same form and 
size as the preceding species; the vertex is more pointed and 
the attenuate ovipositor extends beyond the elytra. 
In color the females are yellowish green, with two large 
coalescent spots on the vertex, both margins of the pronotum, 
the entire claval suture and the tip of the wing black; below, 
all light. The males have the whole point of the vertex the 
sutural margin and an oblique band from the anal cell to the 
center of the costal margin black. Below all black except a 
band across the middle of the face. It can be readily separated 
from curtisii by the absence of the Y on the face, and the fact 
that the yellowish- green of the elytra is not confined to the 
nerves. 
The larv^ are very light yellow, sometimes almost white, 
and the hairs are much smaller and finer than those of curtisii^ 
which, otherwise, they closely resemble. They were first taken 
June 16th, when the first adults of a brood were issuing; larvse 
remaining abundant until the end of the month. The adults 
were very thick until well into July, disappearing before the 
end; appearing again toward the end of August and through 
September. They were thickest upon a patch of Andropogon sco- 
parius, where it was nearly free from other grasses. 
ATHYSANUS OBTUTUS VAN D. 
(Plate xxi. Fig. 3 ) 
Canadian Entomologist, XXIV, pp, 115, 156, 1893. 
This species was described from Mississippi, and has been 
received from Kansas and taken at Ames prior to this season. 
The adults have almost exactly the form and size of hicolor^ but 
are readily distinguished by their color. The vertex is lemon 
yellow, with two round spots just before the middle, and two 
small, oblique dashes near the base, darker. The remainder of 
the body is testaceous. Apical cells of the elytra hyaline, 
enclosing veinlets dark. 
The larvae are light yellow when small, but gradually darken 
to a chocolate brown in pupa, when they resemble the adults in 
form. The adults have been taken the last week in April, 
rather commonly, indicating an adult hibernation, the larv^ 
appearing in May, maturing the middle of June; the adults 
