102 Cameron, Hymetioptera Oricntalia. 



BALIENA LEPTOrUS, sp. nov. 



Nigra; pcdibns fuh'is, coxis nigris, tibiis posticis albis, 

 medio late iiigris, apice nigris ; alis /lya/iiiis, nervis 

 siigi/iaieqiie nigris. ? . 



Long. 14 ; terebra \2 mm. 



Antenn?e black ; the middle broadly clear white ; the 

 scape brownish beneath, shining, almost bare. Head 

 black, shining ; the face and the lower part of the front 

 yellowish-white, impunctate ; the vertex and face sparsely 

 covered with long, pale fuscous hair, and the face also 

 with white pubescence ; the apex of the clypeus brownish ; 

 the mandibles entirely black, shining ; the ]:)alpi yellow. 

 The pro- and meso-thorax plumbeous black ; the tegular, 

 tubercles, scutellum, post-scutellum, and the hinder 

 edge of the mesopleur<e above, yellow ; the mesonotum 

 somewhat strong!)- punctured ; the apex of the middle 

 lobe and the inner sides of the lateral transversely 

 striated. Scutellum black and wrinkled at the base ; 

 the rest of it with shallow punctures ; the post-scutellum 

 impunctate, shining ; the depressions at the sides of 

 the scutella smooth ; the sides of the scutellum obscurely, 

 longitudinally striated. Median segment opaque ; the 

 middle strongly reticulated, more closel}' at the sides 

 and apex than at the base ; the segment has a 

 gradually oblique slope. Pro- and meso-plcura; smooth 

 and shining ; the pro- almost bare, the meso- and meta- 

 pleur.-e thickly covered with long grey hair ; the meta- 

 pleur;c strongly and closely reticulated ; the lower 

 separated from the upper part by a narrow, but distinct, 

 curved keel ; shortly be\ond the middle, touching it on 

 its lower side, is a large, deep, smooth fovea. The four 

 front legs fulvous, the tibial of a paler, more yellowish tint, 

 their coxa; black, white in front ; the hinder cox;c black ; 



