Hymenoptera Orient alls. 127 



apex broadly projecting, and with a distinct incision in the 

 middle. Thorax half shining, coarsely punctured ; the 

 metathorax more closely punctured than the mesothorax, 

 and densely covered with white hair ; pleurae and sternum 

 shining, the punctures widely separated. Pro- and meso- 

 thorax closely covered with dull whitish pubescence. Pro- 

 notum in the middle projecting into the mesonotum, which is 

 thus incised broadly. Meta- longer than the mesothorax, 

 the apex perpendicular, indistinctly furrowed in the 

 centre. Abdomen as long as the thorax ; covered 

 closely with white pubescence (sparsely on the top of 

 the second and third segments), the apex rather acutely 

 pointed. Pygidial area punctured ; covered with a soft 

 white pubescence ; the sides not keeled, the apex incised. 

 The basal two segments are red, broadly black in the 

 middle ; the ventral segments are pale at their junction, 

 Legs covered with soft cinereous pubescence, tibial and 

 tarsal spines white ; calcaria black ; metatarsal brush pale. 

 The second cubital cellule at the top is half the length of the 

 third and hardly the length of the space bounded by the 

 current nervures. 



Hab. Tirhoot, Bengal {RotJiney). 



4. LARRA NIGRIVENTRIS, Sp. 710V. 



Nigra, fere nitida, prjihiosa, mctatJiorace opaco, striolato, 

 fere longiore quain mesothorace ; alis fere fiavo-hyalinis ; 

 apice fuscis, nervis fiavo-testaceis. Long. 12 mm. 



Antennae the length of the thorax, rather stout, covered 

 with a silvery pile ; the second joint one-third of the length 

 of the third, which is hardly one-fourth longer than the 

 fourth. Head wider than the thorax ; opaque, alutaceous ; 

 eyes at the top separated by more than the length of the 

 third antennal joint ; vertex depressed, a wide furrow along 

 either side, close to the eyes ; a shallow and less distinct 

 furrow in the centre, leading to and from the ocellus round 



