184 IOWA ACADEMY OP SCIENCES. 



SYNOPSIS OF SPECIES. 



A. Front strongly inflated, rising abruptly from face at sides, meeting 

 vertex in same plane: pronotum with broad wrinkles; first discoid 

 cell equal to second. 

 B. Front, outline a regular curve, entirely black, or yellow with 

 transverse interrupted brown bands above, light below; prono- 

 tum scabrous, with about eight distinct wrinkles; veins on cla- 



vus prominent delica ta, Uhl. 



BB. Front, outline an irregular curve, upper half black with a narrow 

 yellow margin next to vertex, lower half yellow, lorse and 

 clypeus yellow; pronotum, bare, with about twelve indistinct 



broad wrinkles proteus, Fitch. 



AA. Front, less inflated, rising gradually from face at sides, meeting ver- 

 tex at an obtuse angle above: pronotum finely, sharply wrinkled, 

 about twenty on the median line: first discoid cell smaller than 

 second. 

 B, Hemelytra strongly imjiunctured, sparsely pubescent; second api- 

 cal cell short and broad; insects small, of a uniform color above 



xanthocephala, Germ. 



BB. Hemelytra minutely impunctured, thickly finely pubescent, second 

 apical cell long and narrow; insects large, usually banded above 

 obtusa, Say. 



ARTIFICIAL KEY TO SPECIES. 



A. Face entirely black clclicata-lineata, var. b. or binotata. 



AA. Face not entirely black. 



B. Upper half of front black; lora?, clypeus and lower half of front yel- 

 low - - proteus. 



BB. Upper half of front light with transverse, interrupted, brown bands, 

 C. Pronotum with five transverse straight black bands, not par- 

 allel with anterior margin ..delicata-lineata, var. a. 



CC. Bands on pronotum parallel to anterior margin or wanting. 



D. Hemelytra strongly impunctured, sparsely pubescent; 

 pronotum without bands; lower half of face with a 



light band; insects small ..xanthocephala. 



DD. Hemelytra minutely impunctured thickly, finely pube- 

 scent; pronotum generally banded or colored where 

 not, face all light; insects large .obtusa. 



C. DELICATA UHL. 



G. binotata Uhl. tus, 

 Uhler's original description found in his list of Hemiptera 

 west of the Mississippi river is as follows: 



Form of C. proteus, Fitch, but with a more prominent front. Pale green- 

 ish-yellow. Head broad, apparently impunctate: cranium short, trans- 

 versely depressed, as is also the tylus; anterior edge of the vertex carinately 

 elevated, bordered from eye to eye with a black line; eye margined behind 

 with black; front smooth, polished, bright yellow, rounded, the transverse 

 rugje substituted by slender black bands; lower down grooved, and with a 

 broad black spot, adjoining which each side on the cheeks is a smaller spot; 



