SCUDDER, — THE GENUS SCHISTOCERCA. 443 



e^. Pronotum not or scarcely tectiform ; eyes normal. 

 /^. Relatively small and slender; prozona as long as metazona ; greatest 

 dorsal width of metazona not exceeding width at eyes . . 1. (jracilis. 

 /'-. Relatively stout and large ; prozona shorter than metazona ; great- 

 est dorsal width of metazona exceeding widtli at eyes. 



r/i. Wings flavo-fuliginous 2. aurantia. 



g~. Wings hyaline with fuscous veins. 



10-. Maculation of tegmina delicate, obscure, in the distal half sub- 



strigate 3. curinata. 



Ifi. Maculation of tegmina coarse, distinct. 



i^. Wings more or less distinctly infumate ; prosternal spine erect, 

 yi. Fusco-testaceous ; hind femora with hoary outer face ; hind 



tibiae purple 4. cnhimbina. 



j-. Olivaceo-testaceous ; hind femora and tibia flavo-oliva- 



ceous 5. crocoluria. 



P. Wings hyaline ; prosternal spine retrorse . . 6. interrita. 

 e2. Pronotum distinctly tectiform ; eyes more oblong than usual. 



7. camerata. 

 d^. Pronotum with median dorsal stripe and diversified lateral lobes. 



f-. Dorsal stripe of pronotum of equal width throughout; lateral lobes 

 longitudinally banded, the bands not or scarcely oblique. 

 f^. Prosternal spine slender ; wings more or less infumate ; hind femora 

 without fasciation. 



9I. Males with no distinct dorsal stripe ; maculation of tegmina dis- 

 tinct; wings distinctly flavo-infumate throughout ... 8. mellea. 

 (j^. Males with a conspicuous pale dorsal stripe on head and prono- 

 tum ; maculation of tegmina often obscure ; wings very feebly infu- 

 mate at most 9. zapoteca. 



f^. Prosternal spine stout; wings hyaline or nearly hyaline; hind 

 femora obscurely fasciate. 

 g^. Pronotum very coarsely carinate, the position of the lateral carinas 



unmarked ; tegmina densely maculate 10. vaga. 



g"^. Pronotum finely carinate, the position of the lateral carinae marked 



anteriorly with fuscous ; tegmina sparsely maculate. 11. simulatrix. 



c^. Dorsal stripe of pronotum narrowing from in front posteriorly. 



yi. Lateral lobes of pronotum mottled and longitudinally variegated 



with fuscous, the lower anterior margin not distinct from the rest ; costal 



area of tegmina with no light streak 12. pi/ramldala. 



/'-. Lateral lobes of pronotum with a strongly oblique anterior and in- 

 ferior light patch, edged with fuscous ; costal area of tegmina marked 



with a pallid streak 13. desiliens. 



c^. Tegmina immaculate, or if rarely feebly and obscurely maculate, then the 

 pronotum is marked with a dorsal stripe, narrowing posteriorly ; lateral lobes 

 of pronotum often marked below with dull yellow, separated very obliquely 

 from the darker parts above. 



d\ Lateral lobes of pronotum with a very obliquely delimited inferior clay 

 yellow patch, often obscure in the female. 



