136 FAMILY V.— CEDIPODIN^. 



D. Inferior margin of lateral lobes oblique, the 

 posterior angle thereby acute or posteriorly 

 produced. 



E. Lateral canthi of the metazona termi- 

 nating at the principal sulcus, or, if con- 

 tinued, it is a different course; tegmina 



fasciate or maculate Mestobregma. 



EE. Lateral canthi of the metazona acute, 

 passing in the same course beyond the 

 principal sulcus; proximal half of the 



tegmina densely coriaceous Psinidia. 



DD. Inferior margin of the lateral lobes hori- 

 zontal, but anteriorly oblique, the posterior 

 angle rounded-rectangulate. 



F. Radiate veins of anal field of wings 



normal Trimerotropis . 



FF. Radiate veins of anal field of wings 

 distinctly incrassate Circotettix. 



GENUS Arphia Stal. (1873). 

 Body compressed ; pronotum granulated ; median carina 

 either notched or entire. Wing-covers subcoriaceous, densely 

 and irregularly reticulate, only at the apex remotely areo- 

 late; the intercalary vein nearer the median than the ulnar 

 vein ; of one color, but sprinkled with minute black dots. 

 Wings brightly colored, red or yellow at the base, margined 

 externally with black ; none of the veins incrassate and no 

 costal stigma; ulnar area not noticeably dilated. 



THE YELLOW-WINGED LOCUST. 



{Arphia sulphurea Fab.). 

 Foveola of the vertex in the female slightly transverse, 

 divided bv a median carina, triangular in front, the margins 

 raised and connecting in front, or aptiroaching near to each 

 other in a right angle ; in the male somewhat elongate ; the 

 frontal costa prominent, more or less bisulcate above the 



