Thelymyia. 331 



with the iisual stripes indistinct; scutellum red at apex, lower part 

 of postsciitellum polished. Thorax black-haired; apical scutellar 

 bristles converging or crossing. Abdomen black and shining, third 

 and foiirth segment with a bluish grey front band, divided in the 

 middle into two spots. Abdomen has robust black hairs, and discai 

 and marginal bristles, second segment with a pair of marginal, third 

 with a pair of discai and marginal and fourth with a pair of discai and 

 a row of marginal. Legs not long, a little robust. Wings a little yellowish 

 tinged, most at base; veins brown; apical cross-vein issuing rectangu- 

 larly and then curving outwards. Squamulæ yellow. Halteres brownish. 



Female. I do not know the female. 



Length 6,5 mm. 



B. lugubris is very rare in Denmark, only one specimen, a male, 

 is known, probably taken in North Sealand (Schlick). 



Geographical distribution: — Europe; not known north of 

 Denmark. 



69. Thelymyia B. B. 



Medium sized species of black colour with whitish pruinosity. 

 Head slightly broader than thorax, slightly convex behind and not 

 puffed out below, higher than long. Frons broad and of the same 

 breadth in both sexes, somewhat strongly protruding; eye-margins 

 parallel. Jowls narrow, about one sixth of the height of the eye. In 

 both sexes ocellar, inner and outer vertical and two orbital bristles. 

 Behind postocular bristles black hairs. Frontal bristles descending 

 to insertion of arista, two uppermost reclinate in both sexes. Cheeks 

 bare. Vibrissæ a little ascending, to about one third of the height, 

 but very small and indistinct. Eyes hairy. Epistoma somewhat 

 retreating, almost not reflected below. Antennæ inserted high above 

 middle of the eye, third joint thrice as long as second; arista with 

 second joint not or slightly elongated. Thorax rectangular; three 

 postsutural dorsocentrals, and three præ- and three postsutural 

 acrostichals ; a præsutural intraalar bristle. Scutellum with four 

 marginal bristles on each side, the apical crossing. Three sterno- 

 pleural bristles. Pteropleura with a couple of bristles above. Abdomen 

 elongated conical; excavation on second segment reaching to near 

 margin; abdomen has discai and marginal bristles, second segment 

 with a pair of marginal ; fifth segment with several rows. Hind tibiæ 

 with unequal anterodorsal bristles; claws and pulvilli not elongated 



