42 Journal New York Entomological Society. [Vol. xxvi. 



7. Claws sharply bent (figs. 37, 38), arolia broadly divergent and more or 



less thickened Dicyphinae. 



Claws normal, arolia more or less linear, erect and diverging from the 

 apical half (figs. 50-55) Mirinae. 



8. (i) Prothorax simple, destitute of an apical stricture P'hylinag. 



Prothorax provided with an apical stricture, sometimes fine and shallow ; 



when apparent only at the sides an impressed line extends back to the 

 rear of the calli 9 



9. Claws simple and slender, rarely spread widely (figs. 40, 41); tibiae not 



strongly spinose. long and tapering at the apex or else greatly short- 

 ened, in the latter case segment I of the tarsi is unusually long, the 



head transverse and eyes strongly protruding Cylapinae. 



Claws thick, usualy sharply curved or bent, toothed near the base or thick 

 and broadly curved (figs. 39, 45-49) 10 



10. Pronotum with an apical gibbosely convex area; stricture apparent only 



at the sides from which an impressed line extends to the rear of the 



calli Clivineminae. 



Pronotum with an annuliform apical stricture 11 



11. Hemelytra hyaline, glassy, ovate, with a sharply defined inverted Y- 



shaped red or fuscous mark (Hyaliodes) Dicyphinae (pars). 



Hemelytra not hyaline or glassy ; claws more or less toothed, destitute of 

 arolia but often with two stiffs parallel bristles evident between the 

 claws at base (figs. 46-49) Deraeocorinae. 



The writer has found in addition to the arolia which arise normally 

 between the bases of the claws, a translucent horn-like development 

 occurring on the inner curve of the claws to which he has given the 

 name pscndo-aroUa. In certain species it is perfectly apparent that 

 the pseudo-arolia is nothing more than the thin transparent edge of 

 the claw (figs. 18-20. 27-29, 32, 33. 53-55). In the PhylincT, how- 

 ever, this claw development of the pseudo-arolia is so prominent that 

 Renter and others have referred to "' minute arolia " or " arolia con- 

 nate with the claw." In Oncotyhts and Macrotylus (figs. 13-14) we 

 see the most confusing development of pseudo-arolia. In Macrotylus 

 there is an unusual development of the pseudo-arolia and claw, a 

 condition that has been regarded as " arolia attached at the base of 

 the claw.'" To be true arolia the writer believes the origin of the 

 same should be between the bases of the claws, and not upon the 

 claw. In Pycuodcrcs and Sixcouotiis is seen the most confusing 

 condition of all, arolia or pseudo-arolia being greatly developed and 

 broadly united with the claws. The morphological development of 



