366 M. W. R. de V. GRAHAM 



71 (70) Head distinctly protuberant at level of antennal toruli, face receding ; 



postmarginal vein of fore wing at most slightly more than half as long as 

 the marginal vein, wing immaculate with its apical margin nearly always 

 bare., at least between the tip of the postmarginal vein and the tip of the 

 wing ; first funicular segment much shorter than the pedicellus 



TRITNEPTIS Girault (p. 801) 

 If the head is protuberant at the level of the antennal toruli, then the post- 

 marginal vein of the fore wing is much more than half as long as the 

 marginal vein ; and either the fore wing is maculate, or the apical margin 

 is ciliate throughout, or the first funicular segment is not shorter than the 

 pedicellus ........... 72 



72 (71) Antennae (Text-fig. 569) with flagellum slender, proximally hardly stouter 



than the pedicellus, with the proximal funicular segments longer than 

 broad ; scape distinctly longer than an eye ; clava as long as the three 

 preceding funicular segments together. Head (Text-fig. 303) slightly 

 protuberant at level of toruli. Postmarginal vein of fore wing about as long 

 as the marginal vein . . HETEROPRYMNA Graham (p. 697) 



Antennae different in form ; either the flagellum is stouter or has shorter 

 segments, or the scape is not longer than an eye, or the clava is relatively 

 shorter. Most often the head is not protuberent at the level of the toruli. 

 Postmarginal vein sometimes shorter than the marginal vein ... 73 



73 (72) Gena, above base of mandible, with a large hollow, which extends about one 



third to half way to the eye (Text-fig. 302). Either the gastral petiole is lon- 

 ger than broad, nearly as long as the propodeum ; or the pronotal collar 

 is sharply and regularly margined anteriorly ; or else the fore wing 

 virtually lacks a speculum ......... 74 



Gena usually without a hollow, if a very small one is present (Capellia, 

 Spilomalus , some Pteromalus) then the gastral petiole is as broad as long 

 and shorter than the propodeum, the pronotal collar is usually weakly and 

 irregularly margined, and the fore wing has a large speculum ... 79 



74 (73) Fore wing without a speculum or with at most a very narrow bare strip just 



outside the basal vein. Pronotal collar not margined but somewhat roun- 

 ded off anteriorly. Petiole of gaster transverse. Head in front view 

 (Text-fig. 302). Mandibles similar, both with four teeth, of which the 

 second is smaller than the others and approximated to the third 



CATOLACCUS Thomson (p. 467) 

 Fore wing with a moderate-sized to large speculum. Pronotal collar usually 

 sharply and regularly margined anteriorly, if immarginate then gastral 

 petiole longer than broad. Head of different form. Mandibles most 

 often otherwise .......... 75 



75 (74) Pronotal collar not margined, its lateral angles rather prominent ; petiole of 



gaster fully 1 -5 times as long as broad, nearly as long as the propodeum, 

 lightly reticulate, its sides nearly parallel ; all funicular segments, except 

 sometimes the first, transverse . . EURYDINOTA Forster (p. 474) 



- Pronotal collar sharply margined anteriorly, its lateral angles not prominent. 



Petiole of gaster usually shorter than the propodeum and not longer than 

 broad, if approaching the above in length and shape, then smooth, and the 

 funicular segments not distinctly transverse ..... 76 



76 (75) Gaster (Text-fig. 463) lanceolate, acuminate, much longer than head plus 



thorax ; last tergite much longer than its basal breadth. Proximal seg- 

 ments of funicle longer than broad. Marginal vein of fore wing (Text-fig. 

 467) fully twice as long as the stigmal vein. Nucha of propodeum not 

 developed LONCHETRON Graham (p. 596) 



