Ghilosia. 173 



longish, greyish yellow hairs, more or less mixed witli black and often 

 quite black above. Abdomen somewhat short, æneous black, second 

 and third segments almost quite duU, only the latter a little shining at 

 the sides; the fourlh shining; abdomen is clotlied with rather long, 

 erect hairs, shorter on the middle; the hairs are yellow but more or 

 less black on the middle and at the hind margins of third and fourth 

 segments; the yellow hairs at the sides are thus interrupted by black 

 at the hind corners of third and fourth segments; also at the hind 

 corners of second segment may be a few black hairs. Venter black, 

 densely grey pruinose, with long, pale hairs, on third and fourth seg- 

 ments also black hairs. Legs black, anterior femora slightly reddish 

 at the extreme apex; tibiæ yellowish or reddish in about the basal 

 third and at the apex, hind tibiæ rather indistinctly ; tarsi blackish, 

 middle tarsi obscurely reddish at the base; sometimes the anterior 

 tarsi more reddish; the long hairs behind front femora black, on 

 posterior femora white but black at the apex of hind femora, and 

 also at the apex of middle femora a few black hairs ; tibiæ dark-haired 

 except the golden pubescence below front and hind tibiæ, and they 

 are somewhat fringed above ; hind femora black-setulose below, at the 

 base the bristles yellow, towards apex some longer, bristly hairs; hind 

 metatarsi almost not thickened. Wings more or less yellowish or some- 

 what brownish tinged, especially towards the anterior margin; upper 

 marginal cross-vein curved above, the upper angle rectangular. Squamulæ 

 dirty whitish with a brownish margin and a yellow fringe. Balteres 

 yellowish or pale yellowish, the knob sometimes slightly darkened. 



Female. Frons somewhat broad, slightly Avidening downwards, 

 the middle channel indistinct ; it has yellowish hairs, directed forwards, 

 but above and on vertex the hairs are black. Antennæ with the third 

 joint somewhat larger than in the male. Thorax more coarsely punc- 

 tate, with short, somewhat decumbent, greyish yellow pubescence, 

 mixed with some slightly longer, black hairs; the scutellar bristles con- 

 siderably stronger than in the male. Abdomen somewhat bluish black, 

 with somewhat short, depressed, white hairs, erect at the basal corners 

 of the segments; on the whole middle of second, third and fourth 

 segments are short, black hairs, rather extended at the hind margins 

 of the two former segments. Legs all pale-haired and hind femora 

 not setulose beneath. Wings generally less or almost not tinged. 



Length 7,5—8,0 mm. 



This species is nearly allied to gigantea but it is smaller, the 

 facial knob is a little broader; abdomen more dull above, and it is 

 relatively shorter as it is about as long as thorax and scutellum 

 together, while in gigantea it is longer than thorax and scutellum; 



