IOWA ACADEMY OP SCIENCES. 
217 
DELTOCEPHALUS COMPACTUS N. SP. 
(PL XXV, Fig. 3.) 
Form and coloration similar to iveedi, though with a shorter, 
blunter vertex and shorter elytra. Length, 2.75 mm. Width, 
1.25 mm. 
Vertex one-half longer on middle than next eye, slightly longer than 
broad, tip bluntly, slightly, convexly pointed; disc of the vertex slightly 
rounded; front inflated, broadest in the middle, rounding above and below; 
clypeus straight; gense narrow, arising within the middle line of the eyes, 
scarcely angled; pronotum large, equaling vertex in length, posterior angles 
strong; elytra strong, convex, about equaling the abdomen in length, nerv- 
ures strong, white, usually numerous strong reticulations between the outer 
claval nerve and the suture; central anteapical cell divided, posterior divis- 
ion usually circular in the shorter-winged specimens, resembling ocellaris 
in this respect. 
Color: General appearance maculate brown; vertex light yellow with 
variable black and brown markings as follows: A black crescentiform 
interrupted band between the front margins of the eyes, a pair of approxi- 
mate points near tip, and another pair just inside the black ocelli, dark 
brown; behind the crescentiform band on either side the median impressed 
black line, a circular light brown spot, which may be emphasized on the 
lateral margins when they appear as crescentiform dashes; pronotum dark 
reddish-brown, more or less maculate before; two faint wavy white lines 
across the disk; scutellum yellowish-brown, two dark spots on the disk; 
elytra brownish fuscous; nervures broadly white and fuscous; below, dark 
with white sutures, to black. 
Genitalia: Ultimate ventral segment of female deeply, circularly emar- 
ginate behind, concealed except the acute lateral angles by a circular sub- 
hyaline membrane arising from the base of the segment and extending 
medially beyond the lateral angle. Male valve small, inflated, rounding 
posteriorly; plates broad at base, rapidly, concavely narrowing to the long 
attenuate points, exceeding the pygofers. Described from forty-seven 
specimens. 
This species has been received from the state of Washington 
and collected at Ames the past season. 
Adults were first taken June 27th, when they were swept 
rather sparingly from two different patches of Sporobolus Jiookeri. 
They were taken from that time on till July 27th, and then 
again, probably of a different brood, August 15th and 19th, the 
latter ones, however, from a different locality, as the first two 
patches had been mown before that time. 
DELTOCEPHALUS PEAVOCOSTATUS VAN D, 
Canadian Entomologist, XXIV, p. 116, 1893. 
This species was described from Mississippi; specimens are 
at hand from Ohio, North Carolina and Georgia, and it has been 
collected at Ames for a number of years and is recorded from 
