Bucentes. 469 



especially on each side of the middle; more than one pair of discai 

 bristles on fourth segment, 



Length. Aboiit 6 mm. 



A. versicolor is rare in Denmark, I know only four specimens, 

 two males and two females; one female from Nakskov, bred on ^/g from 

 an undetermined lepidopterous larva (Sønderup), the other from 

 Tørrig near Nakskov taken on ^"/g (L. Jørgensen); the males are 

 from Jutland at Sønderborg, taken on ^/g (Wiistnei). 



Geographical distribution : — Europe down into France ; towards 

 the north to southern Sweden. 



Remarks: Whether the present species is latifrons Meig. is 

 doubtful. That it is versicolor Fall. I think sure as I have examined 

 specimens from Zetterstedt's collection which proved to be the present 

 species. 



111. Bucentes Latr. 



Species of rather small size and greyish, greyish brown or greyish 

 and yellow colour. Head not broader than thorax, somewhat convex 

 behind and liere a little puffed out below, higher than long. Frons 

 broad and equal in both sexes, only shghtly protruding; in the male 

 the eye-margins very slightly converging downwards, in the female 

 they are parallel. Cheeks narrow and jowls likewise. In both sexes 

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

 and occipital bristles relatively large. Behind postocular bristles 

 black hairs. Frontal bristles descending to or fully to end of second 

 antennal joint, two uppermost reclinate, the hinder of them directed 

 outwards. Cheeks a little hairy above or down to the middle with 

 short, fme hairs. Jowls with few hairs. Vibrissæ not ascending, above 

 the large vibrissa at most a couple of small hairs. Oral bristles few 

 in number. Eyes bare. Epistoma a little retreating, the head in pro- 

 file nearly rectangular. Oral cone and proboscis long, the latter longer 

 than the former and quite thin, labella long, thin and styliform, a 

 little longer than basal part of proboscis; as they are in rest bent 

 back towards the proboscis the whole organ is doubly geniculate; 

 when oral cone and proboscis with labella are stretched out they are 

 as long as the body. Palpi thin, thread-like. Antennæ inserted high 

 above the middle of the eye or near its upper end, third joint from 

 about three to five times as long as second, longer in male than in 

 female; arista with second joint elongated, geniculate towards third. 



