22 Cameron, Hymenoptera Orientalia. 



shining, almost glabrous ; the metanotum sparsely 

 covered with white hair ; the scutellum is broadly yellow 

 in the middle ; post-scutellum yellow ; the two fove.-E at 

 its base deep. The curved furrow on the side of the 

 mesosternum is wide, deep, and obscurely crenulated ; 

 the mesosternal furrow is smooth. Over the four hinder 

 coxae is a narrow curved keel. The stigma and apical 

 nervures are fuscous ; the second transverse cubital 

 nervure is faint. The two front legs are entirely pallid 

 yellow, as are also the middle pair, but the femora and 

 tibiae are darker above ; the middle tarsi are black ; the 

 hind legs are black above ; the tibiae black all round 

 towards the apex ; the tarsi white ; the basal half of the 

 metatarsus black. Abdomen black, shining ; the second 

 and following segments narrowly lined with white. The 

 white mark on the apex of the metanotum does not 

 extend to the middle of the segment, and is square at the 

 base, with the sides dilated. 



Characteristic of this species are the black, immaculate 

 pleurre and petiole. 



ETHA FUSCIVENTRIS, Sp. 7WV. 



Nigra ; flavO'inaculatn ; apice vietanoti late inaculisqne 

 pleuralis flavis ; pedibus sordide fulvis, posticis fusco- 

 viaculatis, tarsis albis ; alls hyalinis, stigniate testacco. ? . 



Long. 12 ; terebra 3 mm. 



Antennae black ; the scape and the base of the fla- 

 gellum dirty testaceous ; the seventh to thirteenth joints 

 clear white; head black ; the face, clypeus, labrum, 

 mandibles (except their teeth), palpi, the inner orbits 

 narrowly from the front ocellus to the ba.se of the 

 antennae, and the outer orbits broadly on the lower half, 

 yellow. The face punctured, strongly and more closely 

 on the middle, which is roundly projecting ; the clypeus 



