Bruni r : South \ n rican ] i i:; 



Since no complete synoptic kej of these South American genera 

 has heretofore appeared, one, which may be accepted as preliminary, 

 has been prepared, and is nov pit -nihil. 



Synopsis ob im Soi rn American Gi ["ryxali] 



.1. Foveolae of the vertex below or wanting. The face usually very oblique. 

 b. Antennae with the joints depres ed or flattened, usually inure or less de- 

 cidedly ensiform in one or both sexes. 

 c. \yings of male more or less strongly fenestrate on the humeral field. 

 d. Si.k's of the fastigium of the vertex strongly rounded or arcuate. 

 the apex not acuminate. Tcgmina acuminate or decidedly 

 obliquely truncate. Posteriot itli the apical 



angles horizontally produced, acuminate. Head conical, 

 trongly oblique. Foveolae of the vertex 

 indistinct, ti iagonal. 

 e. Vertex longer than the eyes. Tegmina of the male broader 

 than the length of the pronotum. Wings of the male 

 very broadly fenestrate . . . Hyalopteryx Charpentier. 

 ee. Vertex shorter than the eyes. Tegmina of the male nar- 

 rower than the length of the pronotum. Wings of 

 male less broadly fenestrate. 

 /. Tegmina acuminate, the wings tinted with dilute red. 

 Lateral carina' of the pronotum interrupted. 



Eutryxalis Bruner. 

 f. Tegmina obliquely truncate at apex; wings hyaline and 

 more or less infuscated. Pronotum with the 

 lateral carinae continuous, uninterrupted. 



g. Larger, general color green Truxalis Linnaeus. 



gg. Smaller, general color testaceous or ferruginous. 



Orphula Stal. 

 dd. Sidesof the fastigium of the vertex straight or but gently rounded, 

 the apex more or less acuminate. Tegmina broadly 

 rounded or but feebly truncated at the apex. 

 e. Fastigium of the vertex above depressed oi sulcate, without a 

 median longitudinal carina. 

 /. Lateral carina- of the pronotum less prominent than the 

 median, more or less divergent, especially on the 

 metazona; the prozona and metazona about equal 

 in length, the lateral lobe, deeper than long. 

 g. Tin lateral carinae nearly or quite as well developed 

 on the prozona as on the metazona. Lyes 

 more or less truncate in front. 

 /;. Apical half or two-third- ol tegmina mem- 

 branous. Antenna' Ion. i 

 i. Tegmina moderately broad, the apex 

 feebly truncated; disk of wings 

 tinged with yellowish. 



