Macquartia,. 239 



Female. Quite similar with the frons of same breadth, only 

 the claws and pulvilli small. 



Length 6 to about 7 mm. 



P. signatus is rare in Denmark, I possess only four specimens, 

 two males and two females, the latter taken at Hulerød and in 

 Præstevang in July (Godskesen); the males I bred from the nest of 

 Hoplomerus reniformis? taken in Ermelund on 2^/4, the imagines 

 came on ^/g and ^^/g. The species is otherwise known from nests of 

 Trypoxylon albitarse, Cemonus sp. and Lionotus delphinalis (Enslin, 

 Konowia I, 1923, 249). 



Geographical distribution: Europe down into France; towards 

 the north to Lapland. It is also recorded from North America and here 

 bred from Pelopaeus cementarius and Trypoxylon sp. 



VII. Rhinophorinae. 



39. MacquaPtia R. D. 



Species of medium or smallish size, black, more or less greyish 

 pruinose, sometimes very slightly. Head as broad as thorax, convex 

 behind and here strongly pufTed out below. Frons in male very narrow 

 with the eyes nearly touching, in female broader to as broad as the 

 eye; it is distinctly protruding, the head somewhat triangular in 

 profile. Cheeks somewhat broad, jowls about one third to half as broad 

 as the eye is high, generally broadest in female. In male only fine 

 parallel ocellar bristles present, in female stronger ocellar, and also 

 inner and outer vertical and two orbital bristles. Small postocellar 

 and occipital bristles. Behind postocular bristles occiput all black- 

 haired. Frontal bristles not reaching to the end of second antennal 

 joint, in male stopping above somewhat before vertex, crossing, in 

 female the uppermost directed outwards. Cheeks quite hairy or only 

 on upper part or just above. Vibrissæ not or quite slightly ascending. 

 Eyes hairy, densely in male, less in female. Epistoma slightly retreat- 

 ing, somewhat low. Proboscis somewhat short; palpi thread-like. 

 Antennæ inserted more or less below middle of the eye, short, not 

 reaching lower margin of epistoma, third joint only a little longer 

 than second; arista thickened just at base, short-pubescent. Thorax 

 a little rectangular; three postsutural dorsocentrals (in Danish 

 species); acrostichals varying in number from one to three præ- and 

 postsutural; one posthumeral bristle, sometimes a weak second; 



