IOWA ACADEMY OF SCIENCES. 215 



The elytra are very long, overlapping, with a distinct appen- 

 dix, the center anteapical cell greatly elongate, posteriorly 

 extending much beyond the adjacent cells; valve broad, short, 

 about equaling the ultimate segment; plate broad at base, about 

 three times the length of the valve, slightly narrowing, with 

 straight margins to the broad truncate apex, styles bristle-like, 

 exceeding the plates; py gofers with numerous strong spines 

 below. Color: face and vertex orange red, pronotum and ely- 

 tra yellow, sometimes with a reddish cast; venter and genitalia 

 light yellow, plates narrowly black- tix)ped. 



DELTOCEPHALUS SIGNATIFRONS VAN D. 

 iPlate XXV, Fig. 1.) 



Trans. Am. Ent. Soc, XIX, p. 305, 1893. 



D. sexmaculatus G. & B., Hemip. Col. p. S8.* 



This species, which was described from Colorado, and has 

 been received from Maryland, occurs very commonly at Ames. 

 It very closely resembles inimicus in form and color, but is readily 

 recognized by its smaller size, and the absence of the dots of the 

 former species. , 



Tne adult is 3.50 mm. long, narrow, elytra elongate, closely 

 folded, giving it a very narrow appearance posteriorly. Vertex 

 with six more or less distinctly marked bars, anterior pair 

 smallest; the nervure of the elytra alternately fuscous and 

 lighter; central anteapical cell elongate, constricted, rarely, if 

 ever, divided. 



Adults were taken rather commonly May 29th, and again 

 June 4th, no more being taken until the last of August, when 

 they were again swept in fair numbers, and from then on until 

 September 10th, when the last one was taken. They were 

 most abundant upon weedy places, roadsides, etc., where Setaria 

 and Panicum abound. Considering the nature of the food-plant 

 no economic measures need be suggested, unless it should be 

 found to occur on millet or Hungarian grass. 



DELTOCEPHALUS INIMICUS SAY. 

 (Plate xxiv, Fig. 3) 



Jassus inimicus Sj,y. Jour. Acad. Nat. Sci., IV, p. 385, 1S31; Oompl. Wi'itings, II, 

 p. 383, 1869. 



This species is almost universally distributed throughout ihe 

 northern part of the United Stales and into Canada. It has 

 previously been reported west to the Rocky Mountains, and 



* On examination, the type spei-imen now in possession of Mr. E. P. VanDuzee 

 proved to be an immature female of this species. 



