Hymenoptera from Northern India. 219 



siou, which becomes gradually wider towards the apex and is 

 moderately deep ; there is a smooth, narrower, oblique 

 furrow on the sides. Legs black, pilose, the hair on the 

 femora longer. Wings clear hyaline, the sides of the dilated 

 apex of the petiole and the base and sides of the second 

 segment rufous ; the petiole long and slender, as long as the 

 following three segments united. ? . 



Length 22 mm. 



Hub. Khasia Hills. Coll. Rothney. 



Psen rufo-balteata, sp. n. 



Black ; the apex of the second abdominal segment and 

 the whole of the third rufous ; the fifth and following joints 

 of the antennae testaceous beneath. Legs thickly covered 

 with white hair ; the spurs pale rufous. Wings clear hyaline ; 

 the first cubital cellule in front is half the length of the 

 second, the first recurrent nervure is received very near the 

 first transverse cubital, the second at twice the distance from 

 the second transverse cubital. $ . 



Length 5 mm. 



Hub. Khasia Hills. Coll. Rothney. 



Antennas stout, thickened towards the apex; the scape 

 beneath sparsely covered with long black hair. Face and 

 clypeus thickly covered with silvery pubescence; the front 

 and vertex almost bare, sparsely punctured ; the eyes almost 

 parallel ; the ocelli in pits ; the front with a shallow central 

 furrow ; antennal tubercle large, the apex triangular, its 

 sides distinctly margined, the middle depressed ; below this 

 is a larger broader one, roundly incised at the apex, the sides 

 rounded. Pro- and mesothorax shining, sparsely covered 

 with white hair ; the mesonotum distinctly but not closely 

 punctured ; the scutellums with a few fine punctures. Area 

 on the base of metanotum narrow, elongate, and marked 

 with stout strise ; the central furrow is wide and deep, 

 becoming slightly wider towards the apex, and marked with 

 a few stout stria?; on either side of it at the apex is a large 

 leaf-like expansion, its apex transverse, on the outer side 

 covered with long hair ; at its base is a small rounded pro- 

 jection. Pro- and mesopleurse finely and sparsely punctured ; 

 below the mesopleural tubercles is a wide, deep, slightly 

 oblique furrow, marked with some transverse keels ; there 

 is a smooth furrow near the base of the metapleurse : the 

 apex of the latter is rugose and is marked with some trans- 

 verse keels. 



Comes near to P. rufiventris, but is quite distinct 

 therefrom. 



