148 Cameron, Hymenoptera Orientalia. 



the petiole and a broad band down its middle, a long line 

 down the middle of the second segment ; a narrow trans- 

 verse one on its apex, the apices of the third, fourth, and 

 fifth segments broadly yellow ; the apical segments 

 obscure rufous ; the ventral segments, except the apical, 

 testaceous. 



EPHIALTES. 

 A. Yellow marked with black. 



The Indian species belonging to this genus form two 

 well marked sections. 



I. Middle lobe of the mesonotum raised and distinctly 

 separated from the lateral ; the median segment coarsely 

 punctured ; in the middle at the base with a distinct 

 depression ; the second and third abdominal segments 

 with distinct transverse depressions, smooth. 



Ephialtes NIGRITARSIS, Sp. nov. 



Flavus, nigromaculatiis ; inetanoto punctata ; alls 

 hyalinis, stiginate focsco, nervis nigris. $ . 



Long. 16 mm. 



Antennae nearly as long as the body, black ; the scape 

 yellow, marked with black above ; the base of the flagellum 

 brownish. Head smooth ; the face slightly punctured, 

 shining ; the front broadly, the vertex at the top and the 

 occiput, black. Mandibles black, yellowish at the base ; 

 the palpi yellow ; the face slightly projects in the middle 

 at the base, the projection being bordered by black. 

 Thorax shining ; the middle lobe somewhat pear-shaped, 

 raised above and clearly separated from the lateral ; it is 

 broadly black in the middle ; the lateral lobes are broadly 

 black down the middle, the black line somewhat abruptly 

 narrowed beyond the middle and continued across the 

 apex, there being also a broad central line. Scutellum 

 and postscutellum, smooth and impunctate. Median 



