IOWA ACADEMY OF SCIENCES. 
193 
The larvae appear the latter part of May, maturing before 
the end of June, adults appearing before the middle of June 
and continuing till the middle of July, larvae again appearing 
in July, maturing in August, adults from the middle of August 
on into October. The larvae were taken in grass lands but were 
more abundant in shady situations. 
PLATYMETOPIUS FRONTALIS VAN D. 
Canadian Entomologist, XXII, p. 113, 1890. 
This species may be readily recognized by its much darker 
appearance, being dark brown to black with a broad lemon- 
yellow face and the small round white spots in the ends of the 
elytral areoles distinct. It is slightly shorter and stouter than 
acutus and has a shorter vertex. 
The larvae bear a strong superficial resemblance to those of 
Deltocephalus inimicus, but may be readily separated by the pres- 
ence of the marginal stripe in front of the eyes 
Form and pattern of ornamentation similar to that of P. acutus 
but much shorter and stouter. Vertex very much shorter. 
Color: A dorsal light yellow to cream-colored stripe narrowing- to a 
point on the tip of the vertex, broadening with irregular margins on the 
disk of the abdomen, interrupted before the tip by a narrow black band on 
base of last segment. Marginal dark stripe extending equally above and 
below the border of the vertex meeting *in a point at the apex, a small 
lobate expansion of the dorsal stripe midway between edge and tip of ver- 
tex just behind the white frontal suture. Below, white, tip of posterior 
femur and second tarsal joint annulated with black. 
Life-history similar to that of acutus; larvse from the last of 
May nearly through June; adults from ihe middle of June 
nearly through July; larvaB from the middle of July nearly 
through August; adults from the middle of August through 
September. 
Fouid exclusively in shaded situations; larvae were swept 
from undergrowths of grass and weeds. 
This species has a quite extended distribution, being credited 
by VanDuzee to Canada, New York, Illinois, Iowa and Kansas, 
and as it does not occur in such abundance as some of the other 
species, and would, therefore, be less likely to appear in col- 
lections, it may be assumed to occur throughout the northern 
United States east of the plains at least. 
PLATYMETOPIUS CINEREUS, N. SP. 
(PI. xxvi. Pig. 1.) 
Form of P. acutus but smaller and lighter colored, equaling 
fuscifrons in size. Length, female nearly 4 mm., male, 3.50 mm. 
13 
