— 198 — 



Stigmal vein not developed. Second abdominal segment inclosing the rest 



Subfamily Euchannae_ 



Stigmal vein developed. All abdominal segments plainly seen 



Subfamily Perilampinae. 

 Thorax not greatly developed. 

 Collar large. Antennae many-jointed. Parapsidal sutures of mesonotum 

 complete. 



Body not metallic side- of the mesoscutellum almost straight 



Subfamily Eurytominae. 



Body metallic. Sides of the mesoscutellum both curved 



Subfamily Toryminae. 



Collar small, frequently not visible in the middle. Antennae usually with few 



joints. 



Mesosternal pleura not discernible. Middle legs long, saltatorial, with very long 



tibial spur. 



Marginal vein long. Occipital border of vertex rounded. Antennae 13- 



jointed Subfamily Eupelminae. 



Marginal vein usually very short. Antenna; usually 11 -jointed. Occipital 

 margin of vertex usually acute. Parapsidal sutures of mesoscutum ob- 

 literated Subfamily Encyrtinae. 



Mesosternal pleura usually well marked. Middle legs not saltatorial. First 

 tarsal joint not swollen and incrassate. 

 Antennae 8-jointed. Parapsidal sutures plain. Middle tibial spur moderately 



long Subfamily Aphelininae. 



Antennas 10 — 13-jointed. 



Antennae 10-jointed, inserted just above the mouth, rounded and produced 



at apex. Abdomen almost sessile Subfamily Pireninae. 



Antennae 12- or 13-jointed. 

 Antennae 12-jointed, funicle 5-jointed. Pronotum very short, scarcely 

 visible in the middle. Submarginal vein subangulale, stigmal club 

 often large. Abdomen almost sessile. Parapsides of mesonotum 



distinct Subfamily Tridyminae. 



Antennae 12-jointed. Abdomen distinctly petiolate. Occipital line 



complete Subfamily Spalanginae. 



Antennae 13-jointed, club 3- jointed, ring joints 2. Occipital line not 

 complete Subfamily Pteromalinae. 



Section MICROCENTRI Thomson. 



Antenna? many-jointed, funicle 6-jomted. Tarsi of ^ 5-jointed 



Subfamily Tetracampinae. 

 Antenna' at the most 9-jointed. Tarsi 4- or 3-jointed. 

 Tarsi 4- jointed. 



Pronotum large. Mesoscutellum with four bristles. Submarginal vein not broken, 

 post-marginal distinct, sub-marginal furnished with many bristles. Posterior 

 tibice sometimes with two spurs. 

 Abdomen usually with a distinct petiole. Mesoscutar parapsides very distinct. 



Antennae inserted below the middle of the face, simple with <^ 



Subfamily Elachistinae. 

 Abdomen with a transverse, smooth and conspicuous petiole. Mesoscutar 

 parapsides not defined, or indicated only by very slight grooves. 



