SUBFAMILY II. OEDIPODFN.E. 247 



faintly yellow, not distinctly bounded by a blackish border but 

 with the outer half tinged with fuscous. 



c. Pronotum with its disk tectiform, the sides sloping downward, 

 its dorsal front margin acute-angulate ; hind femora, without 

 dark cross bars on lower outer face. II. CHOBTOPHAGA, p. 254. 

 cc. Pronotum with its disk flat or nearly so, its dorsal front mar- 

 gin obtuse-angulate or truncate; hind femora with dusky 

 cross-bars on their outer face. 



d. Disk of pronotum rugose, its median carina distinct, higher 

 on prozona than on metazona, distinctly cut by the prin- 

 cipal sulcus; frontal costa of male strongly sulcate through- 

 out their full length. III. ENCOPTOLOPHUS, p. 258. 

 del. Disk of pronotum not rugose, its median carina low, of equal 

 height throughout, faintly cut by the principal sulcus: 

 frontal costa of male sulcate only below the ocellus. 



IV. CAMNULA, p. 260. 



bb. Basal portion of inner wings red, orange, black or yellow in color, 

 when not black, distinctly bounded outwardly with a blackish 

 border (Fig. 106, a.) 



e. Body, especially that of female, robust; pronotum with its disk 

 rugose or with numerous tubercles, the lateral lobes with 

 principal sulcus faint or obsolete; base of inner wings red or 

 yellow; sides of tegmina usually with a number of large 

 rounded or subquadrate dark spots. V. HIPP;SCUS, p. 262. 

 ee. Body more slender, often compressed; pronotum with disk al- 

 most smooth, the lateral lobes with principal sulcus distinctly 

 developed; base of inner wings black or pale yellow; tegmina 

 with numerous small dark spots which are sometimes .united 

 into cross bars. 



f. Inner wings black with a yellow border; intercalary vein of 

 tegmina very distinct, arcuate, remote from the median 

 vein. VI. DISSOSTEIRA, p. 271. 



/f. Inner wings yellow, apically hyaline, and with a black or fus- 

 cous curved median band ; intercalary vein of tegmina less 

 distinct, hardly arcuate, nearer the median than the ulnar 

 vein. 



g. Median carina of pronotum crested, deeply notched by the 

 principal sulcus, arched on the metazona as viewed in 

 profile (Fig. 96, c) ; tegmina rather broad, the intercal- 

 ary vein sinuous. VII. SPHAUAGKMOX, p. 275. 

 gg. Median carina low, nearly straight throughout, but feebly 

 notched (Fig. 96, d) ; tegmina very narrow, the inter- 

 calary vein straight, subobsolete. 



VIII. SCIRTETICA, p. 283. 



I. ARPHIA Stal, 1873, 113, 119. 



Rather large, robust species, having the body more or less com- 

 pressed ; vertex horizontal, either subpentagonal or triangular, its 

 disk with a distinct, usually deep concavity, this often divided by 

 a transverse curved impression slightly behind the middle; median 



