212 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [BuU. 



margin broadly, roundingly emarginate; scutellum centrally 

 depressed; elytra coriaceous, convex, about twice longer than 

 wide, costal margins expanded, apex roundingly angulate; wings 

 with the third vein from the marginal vein forked and forming a 

 closed apical cell; entire dorsal surface coarsely, irregularly 

 punctate; male valve wanting. 



The members of this genus resemble each other so closely in 

 their moderate size (7-12 mm.) and uniform grayish-brown 

 coloration that it is possible to separate them accurately only by 

 reference to specific structural characters. The convexity of the 

 pronotum, the degree of inflation of the front with the corre- 

 sponding variation of the facial angle, and in male specimens, the 

 shape of the male plates prove, usually, reliable characters for 

 specific determinations. 



Key to Species. 



1. Pronotum flattened-convex ; front slightly inflated ; color grayish 



brown, two variably distinct hyaline areas on elytral margins; 

 elytra usually broadly convex, with costal margins more strongly 



expanded 2 



Pronotum strongly convex, elevated posteriorly; front strongly 

 inflated; color varying brown, hyaline areas absent, elytra 

 obliquely banded; elytra elongate convex, with costal margins 

 narrowly expanded 3 



2. Size small, not exceeding 8 mm. ; narrower ; dark grayish brown, 



hyaline areas distinct quadrinotata 



Size large, 10 mm. or more; broader; pale grayish brown, hyaline 

 areas indistinct angulata 



3. Usually larger ; elytra more strongly convex, with costal margins 



more broadly expanded; color varying deep brown; front 



inflated and produced, nearly right-angled with vertex 4 



Usually smaller; elytra narrowly convex, with costal margins 

 slightly expanded; color varying light brown; front scarcely 

 inflated, flattened convex, acutely angled with vertex 6 



4. Head broaci, short; vertex rounding, obtusely angulate before; 



apex of elytra sharply, acutely angulate 5 



Head narrow, elongate; vertex almost rectangulate before; apex 

 of elytra bluntly, acutely angulate parallela 



5. Larger; union of front and vertex a large acute angle; color 



dark brown, mottled with lighter irrorata 



Smaller; imion of front and vertex approximating a right angle; 

 color light brown, elytra more or less distinctly, obliquely banded 



permutata 



6. Color varying ochraceous, light stripe and light elytral bands 



obscure or wanting; front slightly inflated, angle with vertex 



less acute 7 



Color deep fulvous, a distinct median stripe from anterior margin 

 of tylus broadening across vertex and pronotum to basal angles 

 of scutellum, and elytra distinctly banded with light; front 

 usually not at all inflated, angle with vertex more acute saratogensis 



7. Color light ochraceous, whole surface irregularly but heavily 



mottled and elytra obliquely banded with chestnut . annulata 



Color tawny brown to pale ochraceous, indistinct median stripe 

 from anterior margin of tylus broadening across vertex and 

 pronotum to basal angles of scutellum, and elytra indistinctly, 

 obliquely banded with light signoretti 



