172 Proceedings of the Biological Society of Washington. 



B. Tegmen with a membranous portion beyond veins, strongly 

 deflexed posteriorly, apex of clavus broadly rounded. 



Clastoptera. 



BB. Tegmen without membranous portion beyond veins; apex of 

 elavus acute. 

 C. Margin of vertex above antenna compressed to a thin edge. 



D. Front swollen; apices of tegmina rounded; pronotum 

 more or less carinate on median line; ocelli nearer 

 each other than to eyes; beak surpassing hind 

 coxae. Aphrophora. 



DD. Front scarcely swollen; apices of tegmina angulate; 

 pronotum slightly sulcate medianly; ocelli about 

 equally distant from eyes and from each other; 

 beak reaching middle coxae. Lepyronia. 



CC. Margin of vertex above antenna truncate or even sulcate. 



Philaenus. 1 

 Tomaspis Stal. 

 T. bicincta Say. — Frequent, but by no means common ; dates of collection 

 range from June 28 to August 17; P. I. 



Aphrophora Germar. 

 Key to the Species. 

 A. Costal region of tegmen with two large hyaline areas, quadrinotata. 

 AA. Costal region without large definite hyaline areas. 



B. Front more swollen, produced as far if not slightly farther forward, 

 than anterior margin of vertex ; larger species, brown color rather 

 uniformly distributed. parallela. 



BB. Front less swollen, retreating at an acute angle from anterior 

 margin of vertex; smaller species, color more obviously dis- 

 tributed into darker and paler areas. saratogensis. 



A. quadrinotata Say. — Fairly common; extreme dates of collection June 



6 to August 12; P. I. 

 A. parallela Say. — Fairly common; has been collected from June 7 to 



August 14; food plant Pinus virginiana; V. P. I. 

 A. saratogensis Fitch. — Common on Pinus virginiana, June 4 to October 



11; V. P. I. 



Lepyronia Amyot and Serville. 



Key to the Species. 



A. Larger species, general color pale brown, a dark V-shaped marking, 

 based on costa, on each tegmen. quadrangular is. 



AA. Smaller species, general color dark brown, tegmina rather closely 

 reticulated with dark markings, except on posterior third. 



angulifera. 



1 Has been taken as far south as North Carolina and may be found here. 



