SUBFAMILY III. — ORTHOTYLIN^E. 797 



g. Sides of pronotum distinctly carinate; front margin of prono- 

 tum usually elevated in a collar-like ridge by a transverse 

 depression before the calli; width of vertex greater than 

 length of head; front of head strongly produced vertically; 

 body opaque or nearly so. VII. Lopidini, p. 831. 



gg. Sides of pronotum not carinate, or if so, the front margin of 

 pronotum not elevated ; head usually as long as or longer 

 than width of vertex, its front less vertical; body more or 

 less shining. VIII. Orthotylini, p. 844. 



Tribe I. LABOPINI Reuter, 1883, 567 (Laboparia) . 



This tribe contains only a single genus which is easily dis- 

 tinguished by the wide head and pedunculate eyes. 



I. Labops Burmeister, 1835, 279. 



Oblong-oval hirsute species having the head across eyes 

 wider than base of pronotum ; front vertical ; eyes projecting 

 outward far beyond front angles of pronotum ; beak reaching 

 between hind coxae; antennae two-thirds the length of body, 

 hirsute, joints 3 and 4 more slender than the others; pronotum 

 trapezoidal, wider at base than long, base one-third wider than 

 apex, sides straight, disk feebly declivent, calli present but 

 low; scutellum triangular, equilateral; elytra dimorphic, in 

 macropterous forms surpassing abdomen with membrane well 

 developed ; in brachypterous ones reaching sixth dorsal, with 

 disk convex and tips broadly separately rounded, membrane 

 absent, clavus and cuneus scarcely differentiated. Two species 

 occur in our territory. 



KEY TO EASTERN' SPECIES OP LABOPS. 



a. Cheeks of male strongly convex, concealing base of tylus when 

 viewed from the side; front of vertex of female strongly de- 

 clivent. 837. HESPERIUS. 

 act. Cheeks of male less convex, base of tylus visible as viewed from 

 the side ; vertex nearly horizontal in both sexes. 



838. BURMEISTERI. 



837 (1117). Labops hesperius Uhler, 1872, 416. 



Oblong, sides subparallel, male, suboval, female. Upper surface 

 thickly clothed with long inclined yellowish hairs, intermixed with ap- 

 pressed scale-like pubescence. Head black, shining; lorse, cheeks, median 

 longitudinal line on vertex and a triangular spot at inner basal angle of 

 each eye extending along base of vertex, yellowish-white; pronotum and 

 elytra black, opaque, the latter with embolium and sometimes the outer 

 third of corium pale yellow; membrane fuscous, veins black; legs fus- 

 cous-black, the middle of hind tibias, tips of all femora and some spots 

 on their under surface dull yellow; under surface shining black, thickly 



