IOWA ACADEMY OF SCIENCES. 211 



B. Hyaline areas distinct, outer discoid cell its own width from 

 margin. 4-notata Say. ^ 



BB. Hyaline areas indistinct, outer discoid cell not more than half its 

 width from costal margin. angulata n. sp. ^ 



AA. Elytra elongate, rounding behind, the outer margin broadly curved, 

 without trace of hyaline costal areas: usually with front inflated 

 and the pronotum elevated. 

 B. Front inflated and produced, meeting the vertex in nearly a 

 right angle; elytra strongly convex, species large, dark. 

 C. Front much produced, extending distinctly beyond the tylus, 

 to which it rounds back; ovipositor long. parallela Say. '^ 

 CO. Front not extending beyond the vertex, pygofers and ovi- 

 positor short, the latter scarcely exserted. 

 D. Front meeting the vertex at a right angle; plates attin- 

 gent, finger-like. permutata Uhl. ^ 



DD. Front meeting vertex at a slightly acute angle: plates 

 broad and stiort, divergent. irrorata n. sp. O 



BB. Front moderately flat, meeting the vertex at an acute angle; 

 species smaller, narrower, lighter colored. 

 C. A broad, white median stripe on vertex and pronotum; face 

 and vertex making an angle of about 50 degrees: pygofers 

 long, narrow, ovipositor exserted; plates short, consisting 

 of two rounding lobes saratogensis Fh.o 



CC. At most a narrow, light stripe on vertex, not extending on to 

 pronotum, face and vertex making an angle greater than 50 

 degrees; pygofers short, ovipositor scarcely longer: plates 

 acute, divergent. 

 D. Pronotum and elytra strongly maculate, plates divergent 

 from base, suddenly narrowed before the apex. 



annulata n. sp. ^ 

 DD. Pronotum and elytra nearly unicolorous; plates attingent 

 at base, divergent before the apex, regularly narrow- 

 ing signoretii Fh. '^ 



APHROPHORA QUADRINOTATA Say. 



A. quadrinotata Say. Jour. Acad. Nat. Sci. Phil. VII, p. 304, 1831. 



Dark grayish -brown, with two large hyaline areas on the 

 costal margin of each elytron; closely resembling the 

 European-^, aim in color and marking, but much smaller and 

 with a longer vertex; length 7-8mm., *width 3-3. 5mm. 



Vertex nearly flat, one-half longer on middle than at eye, anterior 

 margin rounding, the edge sharp, posterior margin broadly angulate with 

 a distinct notch, median carina distinct; front scarcely inflated, the infla- 

 tion being about half the length of the long diameter of the eye, forming 

 an acute angle with the vertex; pronotum rather flat, median carina 

 sharp; elytra broad, the costal margin flaring before the middle; whole 

 upper surface of insect coarsely and irregularly punctate. 



•^Width is always given across the widest part of the elytra when folded. 



