164 Cameron, Hymenoptera Orientalia. 



middle is a black mark, extending to the apex, much 

 narrowed in the middle, where it extends from side to side 

 and is united to a mark on the sides, which is broad at the 

 base, becoming much narrowed at the base. Scutellum 

 pyramidal, the sides stoutly keeled ; the apex with a more 

 gradual slope than the base, smooth, impunctate, sparsely 

 covered with pale hair ; the sides of the postscutellum 

 carinate laterally ; the depression at the base shorter 

 and more abrupt than on the apex. Metanotum shining ; 

 the middle area at the base, clearly wider than it is long ; 

 the basal lateral area on the outer side almost twice the 

 width of the inner side ; the apical area shorter than it, 

 slightly wider on the inner, distinctly narrower on the 

 outer side than the basal one ; the central keel larger than 

 the others, especially on the outer side. Pleurae smooth 

 and impunctate; below the tegulse there is a projection, 

 or tubercle ; immediately above the middle of the meso- 

 pleurae there is a stout, slightly oblique projection, 

 which is flatter towards the apex. Wings hyaline ; the 

 stigma and nervures black; the apex of the fore-wings 

 distinctly, of the posterior faintly, infuscated ; the areolet 

 triangular, very slightly appendiculated at the top ; the re- 

 current nervure is received very shortly beyond the middle. 

 Legs stout, coloured like the thorax ; a mark, longer than 

 broad, and narrowed towards the apex on the hinder 

 femora between the middle and the apex above; the base 

 of the hinder tibise, the extreme base of the hinder tarsi 

 and the apical two joints of the hinder tarsi, black. On 

 the petiole, at the end of the keels, are two obscure dots ; 

 near the base of the third are two marks, rounded and 

 dilated on the inner side at the base ; on the fourth and 

 fifth segments are somewhat large marks, broader than 

 they are long ; rounded on the outer side, transverse on 

 the inner; the penultimate broadly black at the base; the 



