218 IOWA ACADEMY OF SCIENCES. 



Washington, D. C. This appears to be an abundant form in 

 the south and is apparently reaching its northern limit in Iowa, 

 occurring, however, in marvelous abundance in hot sheltered 

 locations and on southern exposures where the vegetation is 

 short and the ground hot. 



The adults are readily recognized by their deep, testaceous 

 brown or black ground color, with a series of points on the 

 anterior margin of the vertex, extending down to the antennal 

 pits on either side and the two outer apical veinlets, white. 

 The legs and a narrow marginal stripe on the basal half of the 

 costa yellow. The head is short and rounding, the elytra long; 

 central anteapical cell divided. Ultimate ventral segment of 

 the female rounding posteriorly, slightly produced in the mid- 

 dle; male valve broad, convex, obtusely, concavely pointed; 

 black, with a narrow yellow margin; plates two and a half times 

 the length of the valve, bluntly pointed, margined with yellow 

 bristles. 



Larv^: Quite as distinctly marked as the adult and are 

 easily separated from any other form. They are two to two 

 and one-half millimeters long, when full-grown, very stout built, 

 head broad and short as in the adult. Color above a rich olive 

 brown with three white bands as follows: One on the posterior 

 margin of the thorax, complete in the larvsD but only visible 

 between the wing-pads in the pupas, a narrow interrupted one 

 on the middle of the abdoaien, and a broader one near the tip; 

 each abdominal segment margined posteriorly with red, just in 

 front of which there are four white dots arranged in longitu- 

 dinal rows where not obscured by the white markings; eyes, 

 area batweea the posterior bands and tip of abdomen darker, 

 approaching black; beneath pale, with tip of abdomen and pos- 

 terior tibisB darker. 



The adults were taken first June 20fch, on a field that had just 

 recently been seeded down and on which weeds were springing 

 up very thickly. On July 27th the same spot was abounding 

 in full-grown larvae, pupsD and adults; the larvae and pupse dis- 

 appearing within a week, adults continuing abundant from then 

 on into and through October. 



DELTOCEPHALUS NIGRIFRONS FORBES. 

 Clcadula nigrifrotis Forbes. 14th Rept. 111. State Eat., p. ti7. 

 D. fusconervosua Van U Bull. Buffalo Soc. Nat. Sci.. V, 207, 1894. 

 Thamnotcttir perpunctata Van D. Bull. Buffalo Soc. N. Sci., V. No. 4, 1894. 

 Deltoccpliaiiis i\induzei Gillette and Baker. Hemiptera of Colorado, p. 90. 



The specific limits and generic position of this species are 

 very puzzling and have led to much confusion and synonomy 



