52 Cameron, Hymenoptera Orientalia. 



as long as the scape and distinctly longer than the fourth. 

 Head black, smooth, shining, impunctate ; the eyes on 

 the inner side very slightly diverging beneath ; from ' 

 shortly below their middle a distinct keel runs obliquely 

 to the basal third of the clypeus ; the face in the middle 

 flat, neither furrowed nor keeled. Mandibles before the 

 teeth reddish, below fringed with whitish hair ; the palpi 

 fuscous-testaceous. Thorax rufous ; the apical three-fourths 

 of the median segment and the metasternum, black. 

 Mesonotum blackish in the middle near the apex ; the 

 middle shagreened ; the sides minutely punctured ; the 

 furrows straight, oblique, converging at the apex, not reach- 

 ing to the base of the scutellum, which is closely and finely 

 punctured. Median segment strongly reticulated, except a 

 small semicircular, finely punctured, space at the base ; and 

 the base of the metapleurae which is closely and obliquely 

 striated, especially below ; the centre on the upper side is 

 smooth and impunctate. The pro-sternum is black and 

 impunctate ; the meso- rufous like the rest of the thorax; 

 the base irregularly transversely striated, bearing large, 

 round, deep punctures, and furrowed down the middle ; the 

 metasternum has on either side a curved keel, and there is a 

 straight one down the middle ; the metasternal process 

 short, triangular, very slightly diverging at the apex ; but 

 through their triangular form the apices are widely 

 separated. Wings hyaline, the stigma black ; the nervures 

 fuscous, the apical paler ; the cubital nervure obliterated 

 beyond the first transverse cubital nervure ; the second 

 transverse cubital nervure obliterated ; the only recurrent 

 nervure is nearly interstitial. All the trochanters are 

 white ; the front femora are black, except at the base and 

 apex ; the fore tibis are obscure fusco-testaceous ; the 

 middle tibiae and tarsi blackish ; the base of the hinder 

 tibiae and the metatarsus, white ; the hinder coxae are 



