Vol. l] Yan Duzee. — Synoptical Keys to Genera of Miridae. 21 8 



— Head truncate before, not produced before eyes; vertex broadly ex- 



cavated, base arcuated and cannate; elytra broad, the embolium 

 well developed; areoles of membrane merged into one, dividing 

 nervure nearly or quite obsolete, their surface similar in structure 

 to the diaphanous corium and c uncus 4. Hyalochloria Eeut. 



4. Eyes rounded behind, in conformity with the curve of the base of the 



vertex, thus bringing eyes away from jjronotal angles; base of 

 vertex ecarinate in the male, very obtusely carinate in the female; 



elytra ample, flat, subhyaline 5. Diaphnidia Uhl. 



■ — Hind margin of vertex and eyes forming nearly or quite a straight 

 line, thus bringing eyes into proximity to pronotal angles 5 



5. Tender whitish insects with elytra a little wider than humeri; basal 



joint of antennae lineate with black exteriorly; vertex ecarinate. 

 6. Reuteria Put. 



— Sometimes tender and whitish, then with vertex carinate at base and 



first antennal joint without a black line 6 



6. Vertex with a distinct carina at base behind a transverse impression, 



this impressed area sometimes with a foveate dot on either side.... 7 



— Vertex without a distinct basal carina; sometimes tumid at base, 



simulating an obtuse carina, with surface before it broadly tri- 

 angularly depressed 8 



7. Head viewed from the side short, apex never produced the length of 



the eye below its lower angle; pronotum without a round black 

 spot behind callosities 7. Orthotylus Fieb. 



— Head viewed from the side longer, apex produced at least the length 



of the eye below its lower angle; pronotum with an imj^ressed 

 round spot behind outer angle of callosities 8. Ilnacora Rent. 



8. Head vertical, with an oblique impression either side on vertex; 



clypeus prominent, convex, well distinguished at base; body above 

 smooth, clothed with deciduous black hairs and minute silvery scale- 

 like hairs (type Macrotylus angularis Uhl). ...11. Pseudopsallus n. gen. 



— Vertex without an oblique impression at base 9 



9 Pronotum with its base elevated above base of scutellum, strongly 



declinate anteriorly, its vertical height about equal to that of head; 

 basal two joints of antennae flattened; body opaque, hirsute, elytra 

 marked with black and white 9. Semium Rent. 



— Pronotum not greatly raised above base of vertex and little above 



the level of scutellum; antennae not flattened 10 



10. Hind femora normal, not saltatorial 11 



— Hind femora very broad (nearly one-third its length), saltatorial; head 



short, vertical; vertex ecarinate; basal antennal joint short, scarcely 



surpassing apex of tylus 15. Parthenicus Rent. 



n. Head transverse, vertical, viewed from above not projecting before 

 eyes; pronotum campanulate, humeri prominent; males with their 

 second antennal joints clavate 10. Mecomma Fieb. 



— Head viewed from above angularly produced before the line of the 



eyes; pronotum trapezoidal, humeri not abruptly prominent; an- 

 tennae never clavate 1 2 



