230 P. CAMERON. HYMENOPTERA. 



front coxae black, the middle whitish yellow, the 4 front femora largely black, the middle 

 pair more largely than the anterior, the hind coxae yellowish white, the rest black, except 

 the basai two-thirds of the tibiae which are dark testaceous; ail the tarsi are black. The 

 6th to I3 th antennal joints white, black above. Wings hyaline, a curved fuscous cloud, narrowed 

 behind, between the base of the radius and the areolet and there is a narrower, fainter cloud 

 at the apex; the stigma and nervures black. Q. 



Length 10 m. m. 



Face closely, distinctly punctured, more strongly on the raised central part than on 

 the sides; the front and vertex smooth. The pro- and mesothorax smooth, shining, the 

 parapsidal furrows narrow, but distinct, only extending to the base of the apical third, where 

 they are united by a band of irregular foveae. Scutellum smooth, shining, its apex narrowed. 

 Base of metanotum smooth, the rest transversely reticulated striated, the base in the centre 

 finely reticulated, the apical slope coarsely transversely striated ; the metapleurae somewhat 

 strongly and closely obliquely striated, more strongly at the apex than at the base. Propleurae 

 at the apex in the middle strongly foveate-striated, the lovver part stoutly longitudinally 

 striated; the mesopleurae smooth and shining. 



Differs from the type (C macid l ceps, Cam.) in the head being entirely black, by the 

 fasciated wings and by being larger and stouter. 



Melcha, Cam. 



1. Melclia melanostoma sp. n. 



Bivak Island, September. Lorentz River, September. 



Black, the apex of the 5* antennal joint and the 6 th to I3 th , except above, palpi, 

 tegulae, scutellums, the middle of the metanotum, the sides of the apical slope, the white 

 extending on to the apex of the metapleurae, post-petiole, more than the apical third of the 

 2 n( i abdominal segment and the whole of the apical 2, yellow, the base of the ist abdominal 

 segment broadly rufous, the middle with a black line on eitherside above, the space between 

 them being whitish yellow. Anterior coxae and trochanters black, the femora dark rufous' 

 darker behind, the tibiae white, rufous tinted behind, the tarsi blackish, the middle legs 

 almost similarly coloured, but with the coxae yellow, rufous behind, hind coxae bright red, 

 the trochanters and more than the apical half of the femora, the tibiae and tarsi black, the 

 femora rufous to near the middle, the tibiae with a rufous band near the base; wings hyaline, 

 the nervures black, a fuscous band of almost uniform width runs across from shortly behind 

 the base of the radius to shortly beyond the apex of the radius and there is a narrower cloud 

 at the apex; the areolet is small, slightly narrowed in front, a little longer along the transverse 

 cubital nervures than along the radius, the 2 nd transverse cubital nervure faint, the récurrent 

 nervure received shortly beyond the middle; the transverse médian shortly behind the 

 transverse basai. Ç. 



Length S m. m., terebra 2 mm. 



Head shining, smooth, the face closely, irregularly transversely striated ; an indistinct 

 keel runs down from the ocelli ; the space below the ocelli is finely, closely obliquely striated. 

 Pro- and mesothorax smooth; a narrow, oblique band of striae on the upper half of the 



