Hilarella. 227 



labelled with locality nor witli the name of the collector Dr. Pflug, 

 whom Fabricius mentions, and as lie does not refer to the said collec- 

 tion, the specimen is not the type, which probably is in Kiel. Under 

 these circumstances I have not altered the name. 



33. Hilarella Rond. 



SmalUsh, greyish or more or less yellowish pruinose species, 

 with small or minute spots on abdomen. Head only slightly broader 

 than tliorax, flat behind, a little higher than long. Frons broad 

 shghtly broader in female than in male, rather much protruding. 

 Jowls about one fourtli of the height of the eye. In both sexes small 

 ocellar, outer and inner vertical and two orbital bristles present. 

 Postocular bristles fme, behind them downwards black hairs. Frontal 

 bristles reaching to insertion of antennæ, three uppermost reclinate 

 in both sexes. Cheeks with fme hairs. Vibrissal ridges a little con- 

 verging below; a large vibrissa present, above it a couple of small. 

 Epistoma somewhat retreating and distinctly reflected below. Oral 

 cone and proboscis not long; clypeus somewhat forceps-shaped. 

 Palpi nearly thread-like. Antennæ inserted at about the middle of 

 the eye, short, third joint not twice as long as second; arista distinctly 

 pubescent, especially near the thickened base, second joint short. 

 Thorax rectangular; three postsutural dorsocentrals; acrostichals 

 only hairs, the præscutellar the longest. Scutellum with three mar- 

 ginal bristles on each side. Two sternopleural bristles. Above on 

 pteropleura a couple of small bristles. Abdomen elongated conical; 

 excavation on second segment not reaching hind margin; there are 

 only marginal bristles, none on second segment. Genitalia quite 

 small. Legs not long; hind tibiæ with a row of quite unequal antero- 

 dorsal bristles and a couple of small ventral. Claws and pulvilli small. 

 Wings with first posterior cell closed or quite short pedicellate, ending 

 long before apex of wing; discai angle rectangular, apical cross-vein 

 bent strongly outwards; angle with a long veinlet; posterior cross- 

 vein nearer to the angle than to the medial cross-vein; cubital vein 

 with only a few bristles at base; a costal spine present. 



The species occur especially in sandy piaces, one (stictica) is 

 known to live as larva in the nest of Ammophila sabulosa. 



Four European species are recorded, but there seem in reality 

 to be only two (or one, according to the way in which the genera 

 are accepted); one occurs in Denmark. 



16* 



