TEYXALIN^E. 29 



j. Antennae nearly or quite as long as hind femora, 

 somewhat flattened at the base; lateral 

 carinae of pronotum wanting, the supple- 

 mental carinse present , , Ochrotettix, Bruner. 



jj. Antennae much shorter than hind femora, 

 filiform or gently ensiform ; lateral carinse 

 present, the supplemental carinas sometimes 

 wanting. 

 k. Antennas feebly clavate in £, depressed 

 but not basally expanded in ? ; supple- 

 mental subdorsal carinse on pronotum 



present ; tegmina and wings complete . Amphitornus, McNeill. 



kk. Antennae apically acuminate in $ , basally 



expanded so as to be subensiform in $ ; 



no supplementary carinas on pronotum j 



tegmina and wings usually abbreviated . Opbia 3 McNeill. 



ii. Scapular area of tegmina in both sexes not at 



all dilated, and of the same density as the 



other areas Amblytropidia, Stal. 



gg. Antennae but little or not at all flattened, filiform, 

 generally long ; fastigium more or less excavate, 

 or, if rotundate, with distinct lateral costulation ; 

 no median carina on the head unless the fastigium 

 is deeply sunken, with high margins; no supple- 

 mentary carinse ; face usually subvertical ; lateral 

 carinse of the pronotum strongly converging 

 mesially, the pronotum being constricted mesi- 



ally. (PHLIBOSTROMiE.) 



h. Face quite strongly oblique ; eyes oblique ; 

 scapular area of tegmina in both sexes broader 

 apically than basally ; prozona much longer than 

 metazona, the latter subtruncate posteriorly . Alpha, Brunner. 

 hh. Face subperpendicular; eyes subvertical; sca- 

 pular area of tegmina in both sexes broader 

 basally than apically ; prozona and metazona of 

 subequal length, the latter angulate posteriorly. 

 i. Antennse much longer than head and pronotum 

 together; no median carina on head, except 

 sometimes posteriorly ; interspace between the 

 eyes as broad as the narrowest part of pronotal 

 disk ; longest hind tibial spur scarcely longer 



than last tarsal joint Phlibostroma, Scudder. 



dd. Radial veins in apical third of wings of £ incrassate and 

 constricted, the discoidal field fenestrate. 

 e. Antennae relatively short, at most but little longer than 



