—24— 



Head short, somewhat prominent before the eyes ; vertex arcuate, very short ; 

 frons not keeled, with two lonsi;itudinal impressions; sides of clypeus 



slii^htly keeled at base ; veins of clavus united before the middle 



G. 3. Rudia, Stal. 



Head moderately produced bt-fore the eyes ; vertex profluced ; frons distinctly 

 keeled ; costa remote from mari^in, sending out numerous transverse 

 nervules G. 4. Numcia, Stal. 



2 Anterior tibiie somewhat longer than the femora and trochanters iniited ; head 



short, somewhat prominent before the eyes, obtuse ; frons somewhat convcxly 

 reflexcd at base, also without a keel at base ; sides of clypeus obtusely sub- 

 carinated. 



Head very slightly prominent before the eyes G. 5. Clardea, Signoret. 



Head very much produced liefore the eyes .... G. 6. Conchoptera, Stiil. 



Wings subelongated, scarcely enlaiged toward apex ; frons wiih a median 



keel, obliterated toward^ the base G. 7. Isporisa, Stal. 



Wings toward apex gradually, greatly etilarged ; frons without a keel 



G. 8. Paricana, Stal. 



3 Exterior margin of wing all greatly rounded ; radial vein forked nearer to the base 



than to the interior ulnar vein, emitting olilique branches 



G. 9. Alcestis, Stal. 



Costal margin of wing scarcely or slightly rounded ; the radial and interior ulnar 



veins very much alike forked from base, without branches, costa remote from 



margin and emitting numerous transverse veins ; frons with one or three keels. 



Head Very greatly triangularly produced G. 10. Daradax, Stiil. 



Head slightly prominent before the eyes, obtu-e . . .G. 11. Tropiduchus, Stiil. 



4 Body broad, oval, depressed ; wings depressed, slightly horny, reaching somewhat 



beyond the apex of abdomen G. 12. Gastrina, Stiil. 



Tribe HI. DERBINI. 

 TABLE OF GENERA. 



Head narrower than the thorax 2. 



Head and thorax of equal breadth G. i. Fescennia, Stiil. 



2 Antennre with appendages at base ; last joint of rostrum twice longer than broad . 



G. 2. Otiocera, Kirby. 

 AntenncE without appendages. 



Second antennal joint oblong or elongated, apex with a sinus above 3. 



Second antennal joint of variable length, subglobose or elongated, apex without a 



sinus above. 



Antennae remote from clypeus, inserted close to the eyes or behind the inferior 



part of the cheeks. 



Wings from within behind the clavus, dilated, rather long, obliquely roundedly 



truncate at apex ; clypeus somewhat longer than the frons, narrow, with 



keels ; scutellum with three keels G. 3. Flaccia, Stal. 



Wings from within behind the clavus not enlarged. 



Head before the eyes strongly produced. G. 4. Persis, Stal. 



Antennse inserted on the inferior part of the cheeks near the clypeus. 



Head before the eyes very slightly prominent, compressed 



G. 5. Phenice, Westwood. 

 Head before the eyes greatly produced G. 6. Halcita, Stiil. 



