IOWA ACADEMY OF SCIENCES. 217 



DELTOCEPHALUS COMPACTUS N. SP. 

 (PI. 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; gente narrow, arising within the middle line of the eyes, 

 scarcely angled; pronotum Urge, 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 anteapicalcell 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 bs 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: ecutellum 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 hookeri. 

 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 FLAVOCOSTATUS VAN D. 



Canadian Entomologist, XXIV, p. 118, 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 



