26 Cameron, Hymenoptera Orientalia. 



Thorax shining, impunctate above ; the furrow on the 

 middle lobe of the mesonotum is wide and deep ; the 

 scutellum large, pyramidal, smooth ; its basal and apical 

 slope about equal in length. Propleurse smooth, roundly, 

 largely tuberculate in the middle above. The mesopleurae 

 bearing large, deep, irregular punctures ; its extreme base 

 smooth ; the lower part, at the apex, largely, somewhat 

 triangularly, projecting. Mesosternum bearing fine, widely 

 separated punctures ; its base oblique ; the central longi- 

 tudinal furrow minute ; the apex, on either side of the 

 middle, projects into triangular tubercles. Legs black ; 

 all the trochanters, the apices of the four hinder coxae, the 

 apices of all the femora narrowly, and the bases of all the 

 tibiae broadly — the hinder more broadly than the others — 

 yellow. Wings fuscous-violaceous, the posterior and the 

 hinder part of the anterior lighter in tint ; the first 

 recurrent nervure is received shortly before the middle ; 

 the second in the basal fourth of the cellule. Abdomen 

 shining, the basal segments broadly, and the apices of the 

 others narrowly, branded with yellow. 



In certain lights the black colour has a distinct 

 violaceous tint. 



Allantus brunneus, sp. nov. 



Riifus, abdominis basi nigro ; tarsis posticis pallide 

 flavis ; femoribus anterioribus supra nigris ; alis fulvo- 

 hyalinis. $ . 



Long. 13 mm. 



Antennae not much longer than the thorax ; the 

 apical four joints distinctly thickened ; the third joint 

 almost twice the length of the fourth ; the ocellar region 

 and the front distinctly raised ; the former depressed in 

 the middle, thickly covered with short, fuscous hair. 

 Clypeus and labrum smooth, the latter with a yellowish 



