lo Cameron, Hymenoptera Orientalia. 



Hylotoma luteiventris, sp. nov. 



Nigra; abdomine luieo, supra late nigro ; alts fusco- 

 violaceis, 7iervis stigmateque nigris. $ . 



Long. 7 mm. 



The scape of the flagellum black ; the flagellum 

 brownish, thickly covered with long, black hair. The face 

 has a slight bluish tinge, closely and minutely punctured, 

 thickly covered with short, fuscous hair; broadly, triangu- 

 larly projecting in the middle ; the sides of the projection 

 bordered by a furrow, which is deepest and widest below. 

 The apex of the clypeus has a shallow incision ; the 

 mandibles are black, with bronzy tints ; the palpi are black, 

 covered with white hair ; the apical joint of the maxillary 

 obscure testaceous. The front and vertex are thickly 

 covered with short, black hairs ; the centre of the front 

 raised, the raised part becoming higher towards the apex ; 

 its centre hollowed ; the depression of equal width, except 

 that it is slightly narrowed near the apex. Thorax black, 

 with bluish tints ; covered with short, black pubescence ; 

 the scutellum more thickly with longer, black pubescence; 

 the post-scutellum very smooth and glabrous with a 

 violaceous lustre and deeply and widely depressed at the 

 base. The basal segment of the abdomen coarsely acicu- 

 lated ; the other segments are smooth, the black with blue 

 and violaceous reflections on the sides, the apical two and 

 and the ventral segments luteous. Legs blue-black, 

 thickly covered with short, black hair. The wings are 

 lighter-tinted towards the apex ; the second cubital cellule 

 at the top is shorter, at the bottom slightly longer, than 

 the third ; the first recurrent nervure is received near the 

 basal fourth of the cellule; the second about the same 

 distance from the base of the third cellule. 



Allied \.o H. zanthogaster Cam. 



