464 Annals of the Carnegie Museum. 



bb. Tegmina and wings of males as long as or longer than the abdomen. 



c. Tegmina rapidly and evenly tapering apically. The fastigium of the 

 vertex smaller. 

 d. Apex of the tegmina rounded [Brazil]. 



parvispina Pictet et Saussure. 

 dd. Apex of the tegmina oblique [Chapada, Matto Grosso, Brazil]. 



humilis Rehn. 

 cc. Tegmina not as rapidly tapering apically. The fastigium of the vertex 

 larger. 

 d. Median carina of the pronotum subobsolete, the posterior margin 

 of its disk obtusangulate (9). rectangulate (cf) [Brazil]. 



trilineata Serville. 

 dd. Median carina of the pronotum distinct, the posterior margin of 

 its disk rectangulate (9), frequently acutangled (cf) [Ar- 

 gentina] viridicata Serville. 



A A. Spines on inner margin of the hind tibiae nearly straight and much longer than 

 those on the outer margin. Tegmina subacuminate, in the male sur- 

 passing, in the female almost or quite as long as the abdomen. Wings 

 usually orange or reddish. Anterior margin of the pronotum at middle 

 sinuate or emarginate. 

 b. Wings for the most part testaceous or pale yellow; anterior margin of the 

 pronotum sinuate. 



c. Larger ( 9 , 68 mm.) [Brazil] scabra Thunberg. 



cc. Smaller ( 9 . 51 mm.) [Bogota, Colombia] granulosa Stal, 



bb. Wings dark yellow, orange, or red. Anterior margin of pronotum emar- 

 ginate. 

 c. Wings ochraceous or crocus-yellow. 



d. Size smaller (cf, 31 mm.). Wings ochraceous with infuscated 



apex [Brazil] spoliata Walker. 



dd. Size larger (d\ 36 mm.). Wings saffron-yellow with a greenish 



apex [Brazil] hymencea Gerstaecker. 



cc. Wings orange-red, tile-red, or vermilion. 



d. Sides or lateral lobes of pronotum and cheeks conspicuously 

 bilunate with white. Front on each side of frontal costa 

 also largely white. Anterior and posterior margins of the 

 tegmina greenish white. Wings brick-red with infus- 

 cated apical region [Bogota, Colombia]. 



picticollis Gerstaecker. 



dd. Sides or lateral lobes of pronotum and cheeks concolorous. 



Costal margin of the tegmina also concolorous, not pallid. 



e. Disk and base of the tegmina concolorous, without paler 



lunules or maculae. 



/. Tegmina with only the dorsal or hind margin pale vittate. 



g. Wings orange-red, the apex broadly infumate. 



[Cumbase, Peru] hilaris Gerstaecker. 



gg. Wings vermilion-red, rather broadly banded towards 

 the apex with fuscous [U. S. of Colombia]. 



psitlacina Gerstaecker. 



