36 p. CAMEEON. HYMENOPTERA OF THE DFTCH EXPEDITION 



Trigonophatnns gen. uov. 



Eyes large, reaching quite close to the base of the mandi- 

 bles, the malar space being very short ; they are parallel and 

 are incised, but not deeply opposite the antennse. Temples 

 short, obliquely narrowed. Clypeus separated from the face. 

 Mesonotura trilobate. Metanotum with an elongated area in 

 the centre, its basal half becomes gradually narrowed to a 

 sharp point ; the spiracles are small, oval, about twice longer 

 than wide. Pleurae without furrows. Basal two segments of 

 abdomen keeled down the middle ; the suturiform articulation 

 deep, moderately wide, crenulated ; hypopygium large, bluntly 

 cultriform. Transverse median nervure received very slightly 

 beyond the transverse basal, almost interstitial ; the recurrent 

 is received at the apex of the P^ cubital cellule, almost inter- 

 stitial. First abscissa of radius not one fourth of the length 

 of the second, about half the length of the 2"'^ transverse 

 cubital nervure. Ocelli large, placed in a triangle, the hinder 

 as near to the eyes as they are to each other. The recurrent 

 is slightly roundly curved. 



This genus, by its large eyes, comes near to Megarhogas 

 Sze'p., which appears to be sufficiently distinguished from it 

 by the elliptical metanotal spiracles, by the mesopleurœ having 

 a furrow and by the innerside of the stigma being half the 

 length of the outer, instead of being of equal length. The 

 hinder coxae are long, obliquely depressed an the outerside ; 

 the calcaria are short as usual with the Bhogadince. 



Trigonopliatnus alhohalteatus sp. nov. 



The antennae, head and 3"^ and following segments of the 

 abdomen black, the basal two abdominal segments, the apices 

 of the others and the greater part of the ventral surface, 

 white ; the thorax, palpi and 4 anterior legs rufous ; the hind 



