J^O Platypezidae. 



Geographical distribution : — England and Scandinavia ; towards 

 the north to middle Sweden. 



Remarks : I have treated the genus here, but as known it was 

 by Zetterstedt placed to the Empids and later on transferred to the 

 Platypezids. I am, however, strongly inchned to think, that it really 

 belongs to the Empids, as also is the opinion of Strobl (Mittheil. 

 Ver. Steierm. 1893, 14). The wing-venation and especially the posi- 

 tion and construction of the hypopygium points, besides other char- 

 acters, towards the Empids. Mr. Collin has also communicated to 

 me, that he holds the same opinion. 



For this and the foregoing genus I cannot agree with Verrall's 

 description of the thoracic chætotaxy; I fmd no peculiarly curved 

 bristles (ox-horn bristles Verrall), and in Platycnema I fmd distinct 

 dorsocentral rows \\\i\\ two long bristles behind. 



3. Callimyia Meig. 

 (Callomyia.) 



Small or smallish, elongate, very beautiful flies; males and females 

 of very different appearance. The males are velvet black, without 

 or with more or less distinct silvery side spots on abdomen; the 

 females have silvery spots on thorax, and abdomen more or less 

 yellow or with yellow or silvery bands. Head as broad as or slightly 

 broader than thorax, broader than high, flat behind or a little convex 

 downwards. Eyes in male large, touching for a long space, so that 

 there is only a somewhat small frontal triangle, and the inner eye- 

 margin is incised at the base of the antennæ; in the female the eyes 

 are smafler and broadly separated. In the male the facets in the 

 upper half of the eye are enlarged, the division between large and 

 small facets transverse. On the vertical triangle is a pair of ocellar 

 bristles, stronger in female than in male, and along the hinder eye- 

 margin a row of postocular hairs; in the female there is a pair of 

 vertical bristles and a frontal bristle on each side at the middle of 

 the frons, and below it one or a couple of quite minute bristles; for 

 the rest the frons is bare. The antennæ are inserted near to each 

 other, at or a little below the middle of the head; the basal joints 

 are small, the third triangularly oval, slightly longer than broad, 

 somewhat pointed and bears an apical arista, the two basal joints 

 of which are distinct; the basal antennal joints have small apical 



