416 Tachinidae. 



Male. Metallic coloured species. Frons above narrower than the 

 eye; cheeks about one foiirth of the diameter of the eye. Orbits 

 metallic green, somewhat whitish pruinose; cheeks and epistoma 

 white; jowls metallic green; frontal stripe brownish red, seen from 

 in front somewhat whitish pruinose. Orbits black-haired; jowls with 

 black bristly hairs. Occiput metallic green, white pruinose along the 

 lower eye-margin, with dense yellow hairs. Eyes with long, pale 

 hairs. Antennæ brownish black, a little pale at junction of second 

 and third joint; third joint rather broad and dilated outwards, 

 rounded at end; arista as long as antennæ, thickened in fully basal 

 half, but evenly tapering. Palpi yellow, with black bristles. Thorax 

 metallic green, black-haired; scutellum with a pair of discai bristles. 

 Pleura green, a little greyish, black-haired. Abdomen metallic bluish, 

 densely black-haired; second segment without bristles, third with 

 one (or two) pairs of discai and one pair of marginal bristles and fourth 

 with one (or two) pairs of discai and a row of marginal. Fifth sternite 

 with dense, short hairs. Genitalia not large; hypopygium with back- 

 wards directed bristly hairs; upper forceps somewhat lancet-like, 

 short, rounded at apex; arms of lower forceps straight, broad at base, 

 then narrowed and ending in an obtuse apex. Legs black; femora 

 somewhat metallic. Wings a little tinged; veins brown. Squamulæ 

 white. H alteres brown. 



Female. I have not seen the female; according to the descrip- 

 tions it is similar, but frons broader; third antennal joint less dilated; 

 palpi a little dilated towards apex. 



Length. About 8 mm. 



C. auratum is very rare in Denmark, we possess only one male, 

 Tisvilde ^^l-, 1914. As host for the species is known Phibalapteryx 

 tersata. 



Geographical distribution: — Europe; towards the north to 

 Southern Sweden, but rare. 



97. Trixa Meig. 



Somewhat large species of black colour, with abdomen in male 

 more or less reddish, and with greyish or silvery pruinosity. Head 

 not broader than thorax, convex behind and pufTed out below, higher 

 than long. Frons in male narrow above, widening dovvnwards, in 

 female broad and slightly widening, somewhat protruding. Eyes 

 short and jowls very broad, as broad as the eye is high. In both 



