Chilosia. 181 



Epistoma similar but the Iower part less prominent, and also less 



descending. Eye-margins a little broader. Antennæ with the third 



joint a little larger. Thorax bluish black, similarly haired, but the 



hairs shorter and a difference between long 



and short hairs only present on the posterior 



part and scutellum, and the long hairs only 



about twice as long as the short. Scutellar 



marginal bristles alniost not longer than the 



long hairs. Abdomen likewise with the erect 



hairs shorter. Legs a little paler, the tibiæ 



distinctly reddish yellow at the base, in- 



distinctly at apex; the legs haired chiefly in 



the same way as in carbonaria, hind femora 



likewise densely but less strongly setulose 



beneath. Wings similar but short, consider- 



ably shorter than in carbonaria. Squamulæ Fi«-. 91. Head of 



white with the fringe whitish. Balteres pale c. cynocephala c?- 



yellow. 



Female. Likewise similar to the female of carbonaria. Antennæ 

 considerably larger than in the male and consequently also larger than 

 in the female of carbonaria, and more brown. Thorax and abdomen 

 more densely and coarsely punctate. The hairs on thorax slightly 

 shorter and more mixed with black; the scutellar bristles a little 

 shorter. Pubescence on abdomen similar, but I find no traces of 

 fasciæ. Legs as in carbonaria but the front femora black-haired 

 behind and the tibiæ much more black-haired. Wings likewise with 

 the contrast between the basal and the brown apical part distinct, 

 but they are considerably shorter. 



Length 8 — 8,5 mm. 



C. cynocephala is rare in Denmark, we have only five specimens, 

 two males and three females; the three specimens are from earlier 

 time, without particular locality; of the other two one is taken at 

 Damhussø on ^/n 1915, the other at Thisted in Jutland on ^^/s 1906 

 (the author); they are both taken in low herbage at water. 



Geographical distribution:— Northern and middle Europe down 

 into Austria and Styria, and also recorded from Italy; towards the 

 north to southern Sweden, and in Finland. 



27. C. vernalis Fall. 



1817. Fall. Dipt. Suec. Syrph. 55, 12 (Eristalis). — 1843. Zett. Dipt. 

 Scand. II, 797, 21 et 1849. VIII, 3171, 21 et 1859. XIII. 6016, 21 (Eristalis). 

 — 1862. Schin. F. A. I, 287. — 1894. Beck. Nov. Aet. Leop. Carol. Akad. 



