Helophilus. 459 



broader, black or yellowish and densely chagreened. The anterior 

 femora are paler, not fuUy the basal half or only the third black; 

 hind femora with only a small protuberance on the lower posterior 

 side near the base, beset with mostly reddish hairs. 



Feraale. Likewise very similar to the female oi f rutetorum, especi- 

 ally as the abdominal side spots on second and third segments are 

 narrower than in the male and not connected with the orange hind 

 margins; the grey lunule on first segment more or less divided as in 

 the male; it is distinguished from frutetorum by the want of black 

 hairs behind the upper eye-margin, and the anterior femora have as 

 in the male the yellow colour more extended, sometimes to rather 

 near the base. 



Length 9,5 to nearly 11 mm. 



Verrall states that the abdomen in the female is much darker 

 than in frutetorum because the black is more extended, but this I 

 have not foimd to be the rule; some specimens have the abdomen 

 darker but others not; on the other hånd I find almost always the 

 anterior femora paler to a greater extent. 



H. versicolor is like the preceding species not rare in Denmark, 

 though perhaps a little rarer than it, and it is generally found in 

 Company with it; Ordrup Mose, Lyngby Mose, Frerslev Hegn and in 

 Jutland at Horsens. My dates are only '^'^le—'^h. 



Geographical distribution: — All Europe and in Asia Minor; to- 

 wards the north to southern Sweden, and in Finland. 



7. H. consimilis Malm. 



1860. Malm, K. V. och V. Samh. Goteborg Handl. VII, 80. — 1906. 

 Frey, Medd. Soc. pro Fn. et Flor. Fenn. XXXIII, 11. — 1907. Kat. palåarkt. 

 Dipt. III, 110. — 1910. Beck. Berl. ent. Zeitschr. LV, 229. 



This species is again very similar to the two preceding; I only 

 know the female; according to the descriptions of the male it differs 

 from the others by having the epistoma a little more hollowed below 

 the antennæ and the central knob or mouth edge more produced so 

 that it is as much or more produced than the antennal prominence. 

 Frons with black hairs; behind the upper eye-margin no black hairs. 

 Abdomen mainly as in versicolor and thus with the side spots on 

 second and third segments confluent at the sides; the grey lunule on 

 first segment distinctly divided. The front tibiæ blackish at the apex 

 all round; hind femora without any process or bristles below at the 

 base (or at all events very slightly). 



Female. Likewise very similar to the females of the preceding 



