96 family v. — pentatomid;e. 



irregularly punctate. Scutellum with basal fourth more or less 

 convex, as wide as central hind margin of pronotum, thence 

 flattened and strongly tapering to a rounded apex. Elytra al- 

 most wholly exposed. Connexivum flattened, widely exposed. 

 Under surface with a median groove, distinct and deep the 

 length of beak, then gradually evanescent and obsolete on fifth 

 or sixth ventral. 



KEY TO EASTERN SPECIES OF BROCHYMENA. 



a. Humeral projection of pronotum subquadrate, truncate and armed 

 with several large acute teeth ; scutellum with basal fourth dis- 

 tinctly transversely elevated. 



b. Color above brownish-yellow tinged with fuscous; antenna? piceous 



with incisures only of the segments pale; mesosternum with a 

 transverse black spot; cheeks surpassing tylus (fig. 18, c) . 



54. ARBOREA. 



66. Color above pale grayish-yellow; basal fourth or more of each an- 



tennal segment pale; mesosternum without a black spot; cheeks 



reaching tip of tylus. 55. poeyi. 



aa. Humeral projections of pronotum subtriangular or rounded, not or 



very bluntly toothed; scutellum not conspicuously elevated at 



base. 



c. Cheeks distinctly longer than tylus, incurved but usually not con- 



tiguous before its apex; second joint of antennae shorter than 

 third. 56. quadripustulata. 



cc. Cheeks equalling or but slightly exceeding tylus, in the latter case 

 their tips usually parallel, not incurved. 

 d. Side margins of pronotum behind the sinus entire, unarmed; be- 

 fore the sinus rounded, white-calloused and obtusely dentate; 

 front portion of pronotum with a deep median impression each 

 side of base of which is a large elevated irregular ivory-white 

 smooth space; basal angles of scutellum each with a similar 

 smooth space surrounded by very coarse black punctures. 



57. MYOPS. 

 dd. Side margins of pronotum distinctly toothed before and behind the 

 sinus; pronotum and scutellum without ivory-white smooth 

 spaces as in d, or, if present, small and indistinct. 

 e. Second joint of antenna? longer than third. 



/. Apex of head triangular, much produced in front of the sinus 

 of cheeks; humeral projections of pronotum broad with their 

 tips rounded ; color above black with numerous smooth yellow 

 markings; length 17 or more mm. 58. cariosa. 



ff. Apex of head subtruncate, but little produced in front of sinus 

 of cheeks, the latter almost obsolete; humeral projections of 

 pronotum triangular, their tips subacute; color above grayish- 

 yellow with numerous white and black punctures; length, 13 — 

 15 mm. 59. pallida. 



ee. Second joint of antenna? distinctly shorter than third. 



