Dolichopodidae. 379 



same volume Zetterstedt mentions ^'•Medeterus signatur n. sp." from 

 Stæger, and gives in Danish some remarks written to him from Stæger, 

 and he adds: "Hæc species (Medet, signatus) mihi de cetero ignota" ; 

 it is curious that he was not aware, that it was the same species, 

 which he had described as Chrysotus signatus a few pages before. In 

 the remarks mentioned, written from Stæger to Zetterstedt, the former 

 says that the hind tibiæ have a double spine belovv in the middle, 

 but this is, as seen in my description, a mistake, it is however easily 

 understood that the close-standing spines may have presented them- 

 selves as such by a not sufficient enlargement. As Zetterstedt says : 

 "Stæg. in litt." the name is originally due to Stæger. 



T. signatus is very rare in Denmark; there exist in all only two 

 specimens, both without any exact locahty given; one of them is in 

 Zetterstedt's collection, the other (rather damaged) in ours. 



Geographical distribution : — The species is only known from 

 Denmark, the two specimens mentioned being the only existing. 



28. Sympycnus Loew. 



Species of small size, of dark metallic colour, and not or slightly 

 shining. Head a little broader than thorax, as broad as high or a 

 little higher than broad, slightly narrowed downwards and about 

 semiglobular, with the occiput slightly arched. Vertex a little ex- 

 cavated, ocellar tubercle a little prominent. Frons broad, broadest in 

 the females, narrowed towards the antennæ. There are ocellar, outer 

 vertical, and somewhat distantly placed postvertical bristles; besides 

 a pair of small hairs on the ocellar tubercle. Eyes large, somewhat 

 oval, a little narrowed downwards; they are short-hairy. The facets 

 are a little enlarged towards the epistoma in both sexes. The eyes 

 are separated, most broadly in the female, more or less narrowly in 

 the male, and in this sex nearest to each other below. The ocellar 

 bristles form a single rovv, but besides there are some bristly hairs 

 on the lower part of occiput. Antennæ inserted near to each other 

 above the middle; they are short, the first joint obconical, the second short 

 and simple, the third more or less triangular, and more or less pointed, 

 generally a little longer in the male than in the female; arista dorsal, 

 much longer than the antennæ, its first joint somewhat short. The basal 

 antennal joint is bare, the second has bristles at the apex, the third 

 is distinctly and somewhat strongly hairy and the arista pubescent. 

 Epistoma narrow in the male, broadest above, more or less con- 

 tracted downwards; it is broader in the female and with parallel or 

 almost parallel margins; the clypeus is short and only indistinctly 



