PSYCHE. 233 



the posterior ulnar, this lower field regularly fenestrate in the ^ , 

 densely reticulate in the 9 . .... Syrbula Stal. 



c'^'. Hind tibiae armed with less numerous spines, rarely numbering as 

 many as 15, usually only 10-12, on outer margin. 



d^. Radial veins in apical third of wing in $ normal, not constricted 

 nor specially incrassate, the discoidal field not fenestrate. 



e'^. Head usually more or less conical, ascending, sometimes 

 strongly ; eyes usually prominent ; upper portion of frontal 

 costa produced so that the front, as seen laterally, is more or 

 less sinuate or excavato-angulate at the ocellus ; wings usually 

 banded or highly colored (Acrolophiti) . 



yi. Head as viewed laterally strongly ascending ; face 

 below ocellus subperpendicular ; antennae more than half 

 as long as the tegmina ; metazona distinctly elevated above 

 the prozona, tumid or crested. 



g^. Metazona much longer than prozona, with an 

 elevated but tumid crest. Acrolophitus Thomas. 



g'''. Metazona barely longer than prozona, tumid, but 

 with only a slight carina. . Acrocara Scudder. 



/'-. Head as viewed laterally with scarcely ascending 

 vertex ; face below ocellus distinctly though not greatly 

 oblique ; antennae less than half as long as tegmina ; meta- 

 zona not or barely elevated above the prozona, feebly 

 tumid at most. 



g^. Antennae much longer than the face ; lower mar- 

 gin of lateral lobes anteriorly excised, broadly expos- 

 ing the pleura ; basal third of tegmina densely retic- 

 ulate, the intercalary vein obscure. 



Ft'dioscirtetes Thomas. 

 g'^. Antennae shorter than the face; lower margin of 

 lateral lobes nearly horizontal throughout, scarcely 

 exposing the pleura ; only the extreme base of the 

 tegmina densely reticulate, the intercalary vein dis- 

 tinct. ..... Gymnes Scudder. 



e'^. Head obscurely or not conical, never, unless very feebly, 

 ascending; eyes seldom prominent; face, as seen laterally, 

 straight throughout or uniformly rounded, never sinuate or 

 excavato-angulate ; wings generally clear or (apically) faintly 

 fuliginous. 



