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Scape quite slrons^ly broadened below; scutellum flat; waiLjs ludimeniary 



*Geinis Dinocarsis Foerstei-. 



Scape not compressed; scutellum stron;^!)' transversely arched; \ving> deve- 

 loped *Genus Prionomastix Mavi . 



I'unicle not or but slightly compressed. 



Head and mesouotum with thick and sharp round punctmes; marginal 



vein wanting or very sh irt Genus Copidosoma Ratzeburg. 



Head and mesonotum not so sculptured. 



Mesonolum lusterless, no sculpture perceptible with a low iiower. 



Middle of face transversely .strongly arched. Mesoiioium under a 

 high power with close longitudinal line or impressions. Pedicel 



shorter than first funicle joint *Genus Holcothorax Mavr. 



Face delicately arched. Pedicel longer than first fimicle joint 



Genus Aphycus Mayr. 

 -Mesonotum moderately or strongly lustrous and usually with easily 

 perceptible sculpture. 



Marginal vein evidently longer than the stigmal 



*Genus Ericydnus Walker. 

 Marginal vein usually shorter than stigmal, seldom as long, or the 

 wings are rudimentary. 

 Wings rudimentary. 



Scutellum large, very fiat, reaching behind to the base of the 



first abdominal segment *Genus Choreia Westwood. 



Scutellum small, arched, not reaching to abdomen 



*(ienus Baeocharis Mavr. 

 Wings develo^ied. 



Head covered with large shallow impressions, over these thickly 



and finely punctured *Genus Phaenodiscus Foerster. 



Head not much punctured, usually with only a few scattered im- 

 pressions near the eyes. 

 Head lengthened below eyes, trapezoitlal when seen from be- 

 fore Genus Psilophrys Mayr. 



Head not lengthened below eyes, round or oval v/hen seen 



from before Genus Encyrtus Dalman. 



Subfamily APHELININAE. 

 Fore wings with a hairless line, extending from stigma transversely towards base of 

 wing; antennae apparently 6-jointed. 



Fore wings dusky on basal half and furnished with cilia towards tip 



*Genus Plastocharis Foerster. 

 Fore wings not dusky and not with especially long cilia. 



Three antennal joints before club of equal length *Genus Mesidia Foerster. 



Three antennal joints before club of unequal length. 



Ovipositor exsertcd to more than one-thn-d the length of abdomen 



Genus Centrodora Foerster. 

 Ovipositor not at all or but slightly exserted . . .Genus Aphelinus Westwood. 

 lore wings with no hairless line; antennas plainly 8-jointed. 



Antennal club only 2-jointed; hind border of hind wings with very long cilia 



*Genus Encarsia Foerster. 



.\nlcnnal club 3-jonitt-d ; hind border of hind wings with no very long cilia 



Genus Coccophagus Westwood. 

 (To be continued.) 



