150 Cameron, Hymenoptera Orientalia. 



smooth, impunctate, without a distinct depression at the 

 base; the abdominal segments strongly punctured. 



Ephialtes nigromaculatus, sp. nov. 



Flavus; capite, thorace abdominegue nigromaculatis ; 

 antennis nigris^ bast fuscis ; trochanteribus posterioribus, 

 basique tibiarinn posticarum nigris ; tarsis posticis fuscis ; 

 alls hyalinis, nervis stigmateqiie nigris. ? . 



Long. 13-14; terebra 13 mm. 



Scape of the antennae black ; the apex yellow ; closely 

 punctured, sparsely covered with long, pale hair; the 

 flagellum blackish, brownish at the base; thickly covered 

 with stiff, microscopic pubescence. Head yellow; the 

 vertex broadly in the centre, and diverging laterally above 

 the ocelli to shortly down the occiput and across to near 

 the edge, and a small mark on the face in the centre below 

 the antennae, black. Face obscurely punctured, covered 

 with longish, pale hair; the clypeus almost smooth; at its 

 base is a deep, transverse furrow; mandibles broadly 

 black at the apices; the palpi pallid yellow. Mesonotum 

 smooth, shining; a large black mark on each lobe; the 

 apex of the scutellum, the postscutellum, and a curved 

 mark on the apex of the median segment, black ; the apical 

 lobe of the propleurse is for the greater part black ; the 

 black mark at the base on the upper side being roundly 

 incised; at the apex transverse; below the middle on the 

 apex of the mesopleurae is a black mark, transverse at the 

 apex, rounded at the apex. The upper part of the meta- 

 pleurae closely and strongly punctured, the lower quite 

 smooth. Wings clear hyaline; the nervures and stigma 

 deep black; the areolet oblique, above triangular; the 

 recurrent nervure is received in the apical third of the 

 cellule. Legs shining, stout, thickly covered with white 

 hair; the apices of the four posterior trochanters and the 



