36 SYNOPSIS OE GENERA. 



24 (21) Cheeks half as long as the eyes ; apical joints of flagellum 



thicker than the fifth or sixth ; pronotum small ; radial 

 cellule long, nari'ow, open. 



25 (26) Base of scutellum with two sharply separated fovese ; carinas 



of metanotum straight and parallel, seldom curved or 

 diverging towards the apex ; parapsidal furrows sharp and 

 complete; antennae and tibia3 not covered with hairs, the 

 third joint longer than the fourth. . Andricus. 



26 (25) Base of scutellum with a transverse furrow, or with two 



sharply separated fovese; in the latter case the keels on 

 metanotum curved. 



27 (28) Claws single; antennas and tibiae not covered with stiff hairs; 



base of the scutellum with two fovese ; mesonotum polished ; 

 body yellowish. BiorMza. 



28 (27) Claws bifid ; antennae and tibise closely covered with stiff 



hairs ; a transverse furrow at base of scutellum ; the agamic 

 form hairy, especially on the legs and antennse; thorax 

 Opaque, shagreened ; sexual form polished, glabrous. 



Dryophanta. 



Males. 



1 (2) Petiole rugosely longitudinally furrowed ; face sharply stri- 



ated ; frontal keels seldom short and indistinct ; radial 

 cellule closed ; antennae 15-jointed, third joint sometimes 

 enlarged. Synergus. 



2 (1) Petiole not longitudinally furrowed. 



3 (4) Face with two parallel keels between the antennae and cly- 



peus ; antennae 15-jointed, the third joint enlarged and as 

 long as the fourth ; base of scutellum with two f oveae ; meta- 

 notum with two parallel carinae. Ceroptres. 



4 (3) Face without kee.ls. 



5 (6) Mesopleurae on lower side with a stout, often punctured or 



reticulated longitudinal furrow ; third antennal joint the 

 longest ; radial cellule closed ; claws simple. Bhodites. 



6 (5) Mesopleurae without a longitudinal furrow. 



7 (8) No transverse keel behind the depression at base of scutel- 



lum ; abdomen petiolated ; parapsidal furrows absent or 

 indistinct. Neuroterus. 



8 (7) A transverse keel behind the fovese at base of scutellum. 



9 (10) Cheeks with a shai'p furrow ; antennae longish, thin, 15- 



jointed, the joints at least three times as long as thick ; 

 mesonotum polished ; the furrows complete ; metanotum 

 with two keels ; two fovese at base of scutellum, separated by 

 a sharp keel. Trigonaspis. 



10 (9) Cheeks without a furrow. 



11 (12) Second and third abdominal segments amalgamated, with 



scarcely a trace of suture ; abdomen not petiolated ; antennae 

 14-jointed ; radial cellule closed ; claws bifid ; mesonotum 

 finely rugosely punctured. Periclistus. 



12 (11) Second and third abdominal segments not closely amalga- 



mated ; the suture quite distinct. 



13 (14) Yertex, front, mesonotum, and mesopleurae polished, glabrous ; 



pronotum with two foveae in front, polished between them ; 

 antennse 14-jointed; claws simple; radial cellule open in 

 front. Xestophanes. 



