with a carina; abdomen often rotund, never produced at apex with 9 



Genus Pteromalus Swederus. 



Mandibles with three acute strong teeth; collar narrow, scarcely discernible 



Genus Metopon Walker. 

 Genus DIMACHUS. 

 Collar not separated ; funicle filiform, joint i large. 



Marginal vein thickened, stigmal nearly same length ora little longer; bodyshort... 



Subgenus Caenocrepis. 

 Marginal vein delicate, longer than stigmal. 



Abdomen with a basal yellow hand Subgenus Dimachus. 



Abdomen with no band Subgenus Hemitrichus. 



Collar separated. 



First funicle joint short. 



Antenna" short, clavate Subgenus Habritus, 



Antennae filiform Subgenus Dinarmus. 



First funicle joint cylindrical; antennae filiform ■ • • • Subgenus Picroscytus. 



Genus MERISUS. 

 hirst funicle joint short; rim of the metathorax with large punctures; coxae all rufous 



Subgenus Bceotomus Foerster. 



hirst funicle joint as long as the following. 



Abdomen subcylindrical, joint 3 short Subgenus Merisus Walker. 



Abdomen subovate, dorsum often flattened Subgenus Homoporus Thomson. 



Genus EUTELUS. 

 Marginal vein one and a half times as long as the stigmal; metathorax with distinct 

 lateral folds; club of $ antennae blackish. 

 Head with narrow vertex; 9 ocelli placed in a very slightly curved line: thorax 



short Subgenus Eutelus Walker. 



Head with broad vertex; clypeus incised or truncate at apex; ocelli large; placed 

 in a triangle: thorax long; margin of collar sharp; abdomen elongate, 



triangular Subgenus Platytermus Thomson. 



Marginal vein not at all or bnt slightly longer than stigmal; metathorax with no 

 lateral folds: first funicle joint very small; vertex and collar narrow. 



Antenna: inserted a little below the middle of the face 



Subgenus Amblymerus Thomson. 



Antenna' inserted slightly above the clypeus; metathorax very short 



Subgenus Psilonotus Thomson. 



Genus ROPTROCERUS. 

 Antennae inserted almost in the middle of the face which is impressed with large 



punctures Subgenus Roptrocerus Ratzeburg. 



Antennae inserted scarcely above tin- clypeus Subgenus Anogmus Foerster. 



Genus i^TROXYS. 

 1 lypeus armed apically in the middle with a tooth; thorax long, collar acutely 



margined and dilated laterally; metathorax with short folds or none at all 



Subgenus Stenomalus Thomson. 

 ('lypeus with no apical tooth, but with a sinuate or truncate apex. 



Wings with a large stigmal club; head with the cheeks often rounded; collar 

 separated, acute and not narrow medially. 



