Vol. ].] Yaji Duzee. — Synoptical Keys to Genera of Miridae. 207 



8. Face opaque, distinctly obliquely striate; sulcus conspicuous; clypeus 



not at all polished; callosities inconspicuous 5, Creontiades Dist. 



— Face polished, without distinct striae; sulcus inconspicuous; clypeus 



polished; callosities conspicuous 9 



9. Sides of pronotum carinate; collar broad; head subhorizontal; eyes 



small, oblique 6. AUorhinocoris Eeut. 



— Sides of pronotum ecarinate, rounded; collar very slender; head nearly 



vertical and thick at apex, extending but little below the large 

 vertical eyes 7. Adelphocoris Rent. 



10. Second antennal joint clavate, clavate portion occupying the apical 



third and strongly flattened and sulcate above; vertex without a 

 sulcus; surface polished, nude 11. Ectopiocerus Uhler 



— Second antennal joint linear, not at all clavate; surface above clothed 



with a close pubescence 11 



11. Whole upper surface closely, minutely shagreened, giving the insect an 



opaque aspect; vertex sulcate at base; antennae inserted much 

 below the eyes 13. Thyrillus Uhler 



— Upper surface more polished; base of vertex with a transverse groove 



but scarcely prolonged at the middle in a sulcus; antennae inserted 

 close against the lower angle of the eyes 12. Irbisia Eeut. 



Division 3. Dichrooscytaria Douglas and Scott 



Upper surface 0})aque or nearly so, clothed with short j>ubescence 1 



Upper surface highly polished, nude; form broad-ovate; cuneus strongly 

 deflexed 6 



1. Pronotum marked with a pair of round black points, occasionally 



wanting in specimens not fully colored 2 



— Pronotum without the pair of round black points 4 



2. Basal joint of antennae terete, or nearly so 3 



— - Basal joint of antennae strongly compressed, nearly as wide as hind 



femora 2. Lampethusa Dist. 



3. Second antennal joint linear; first joint with but few minute hairs, 



not, or scarcely, longer than the head 4. Calocoris Fieb. 



— Second antennal joint thickened toward the apex; first joint densely 



pubescent, hairs nearly or quite as long as the thickness of the 

 joint 3. Paracalocoris Dist. 



4. Antennae stout, second joint strongly clavate, third and fourth abruptly 



slender and together scarcely longer than the first; body broad oval, 

 densely sericeous-pubescent; scutellum tumid.... 1. Pycnocoris Van D. 



— Antennae slender, second joint linear, third and fourth joints together 



nearly or quite as long as the second 5 



5. Head exserted, the small rounded eyes not overlapping pronotal angles; 



base of clypeus when viewed from above much anterior to the inser- 

 tion of antennae 5. Poeciloscytus Fieb. 



— Head broad and short, closely set against pronotum, the large eyes 



overlapping its anterior angles; base of clypeus when viewed from 

 above in a line with base of antennae 6. Dichrooscytus Fieb. 



