ACRIDIIDAE — OEDIPODINAE 35 



h ^. Lateral canthi of the metazona typically intersected by the 

 principal sulcus, often vanishing anterior to that ; principal 

 sulcus distinctly developed on the lateral lobes. 



c 1. Pronotal carina entire or intersected by but one sulcus. 

 d^. Pronotum with a very high foliaceous crest. 



Tropidolophus Thomas. 

 d'^. Pronotum crested or carinate, but not excessively. 

 e i. Body slender, compressed ; lateral foveolae of the 

 head trigonal, short, 

 yi. The whole of the apical third of the tegmina, 

 even next the costal margin, membranaceous. 



g 1. The intercalary vein of the tegmina very dis- 

 tinct, retroarcuate, rather remote from the median 

 vein, nearly intermediate between it and the ulnar ; 

 the anterior intercalary area, therefore, rather broad ; 

 wings conspicuously marked, but not banded. 



Dissosteira Scudder. 

 g -. The intercalary vein of the tegmina more or 

 less distinct, hardly arcuate, nearer the median 

 than the ulnar vein ; the anterior intercalary area, 

 therefore, narrow, densely coriaceous ; wings with a 

 fuscous arcuate median band. 



h ^. Tegmina rather broad, the intercalary vein 

 more or less flexuous ; pronotal crest anteriorly 

 elevated, profoundly intersected, arcuate on the 

 metazona as seen laterally. 



Spharagemon Scudder. 

 h ^. Tegmina very narrow, the intercalary vein 

 straight, subobsolete ; pronotal crest low, straight 

 as seen laterally, not deeply intersected. 



Scirtettica Saussure. 

 y2. The apical membranaceous portion of the tegmina 

 oblique, the costal margin coriaceous. 



Lactista Saussure. 

 e 2. Body rather stout ; lateral foveolae of the head 

 lanceolate. .... Toinoiiotus Saussure. 



