BY P. CAMERON. 639 



which is smooth, has a stout keel down its base, but not on the 

 basal edge; it has two longitudinal upper and lower keels. There 

 aie two rows of punctures on the apices of the third and fourth 

 abdominal segments, the others being opaque, and finely rugose. 



Antiirocephalus marginiceps, sp.n. 



Black; the four anterior knees and tarsi rufo-testaceous; wings 

 hyaline, the apical half tinged, slightly, but distinctly with 

 fuscous, the nervures black; face, outer orbits, apex of meso- 

 pleurte, metapleurse and the sides of the apical abdominal segments 

 densely covered with long silvery pubescence, the rest of the body 

 with the silvery pile shorter and sparser, except on the meso- 

 notum, where it is short and black; legs covered with white 

 pubescence, which is dense, especially on the femora and tibiae. 

 The last abdominal segment and the sheath of the ovipositor 

 covered densely with a short white pile. ^<^. Length, 5 mm. 



Mittagong, N.S.W.; in January; caught on the wing(W. W. 

 Froggatt). 



Antennae lungish, of uniform thickness. Frontal depression 

 finely, closely transversely, regularly striated to the anterior 

 ocellus, which is placed inside it in a smooth shining space; it is 

 bordered by a stout keel, the space between which and the eyes 

 is regularly, rather closely, and strongly striated. Occiput 

 closely, almost transversely, not very strongly rugosely punctured, 

 the punctures on the top larger, and more distinctly separated. 

 Pro- and mesonotum, and scutellum moderately strongly punc- 

 tured, the punctures on the mesonotum more widely separated. 

 Metanotuni bordered by a stout keel, commencing at the outer 

 basal part, where it is roundly dilated, forming almost an oblique 

 semicircle from which it runs obliquely to the lower central part, 

 forming a triangular area; the keel has two outward projections 

 inside it. In the narrowed basal part, are some oblique striae, 

 the innermost larger and rounded inwardly; on the base is a 

 crenulated furrow; the area is bare, but it is fringed densely by 

 long silvery hair. Pleurae strongly punctured, the depressed 

 basal part of the mesopleune bare, sliining, strongly striated, the 

 striie clearly separated, the central more irregularly sloped than 

 the others. Seen from the top, the metanotum, on the outer 



