20 Orthorrhapha brachycera. 



distinct, brown, lying at the middle of tlie costa; its hinder border 

 is very distinct and marked and might be mistaicen for a vein. Costa 

 is very finely haired or spinulous from the base to the apex of the 

 subcostal vein. Halteres brownish, 



Female. I have not seen the female; according to Zetterstedt it 

 is similar to the male, but greyish, and abdomen is not incurved. 



Length 2,5 mm.; when the end of abdomen is tiiought stretched 

 out, the length would be about 3 mm. 



M. stigmaticalis is very rare , we have only one specimen , a 

 male, the same as that about which Zetterstedt notes that it was 

 taken by Stæger on a window^ in Copenhagen on ^ho 1841; the above 

 description is made after this specimen. 



Geographical distribution: — The species is otherwise only known 

 from Sweden, towards the north to Lapland, and in Finland. Zetter- 

 stedt took one specimen at the height of 3000 feet, in the snow. Bons- 

 dorff speaks of the species flying in the evening near a brook. 



3. Bicellapia Macq. 

 Species of small size and generally of black, rarely of pale colour. 

 Head globular, as broad as thorax. Occiput only slightly arched, 

 beset With hairs. The eyes are large, occupying the whole front part 



Fig. 4. Antenna of B. spuria. X 100. 



of the head; they are touching in both sexes quite from the ocelli 

 to the antennæ. The facets in the upper half part are longer than 

 below, and the dividing line is distinct. The incisure in the inner 

 eye-margin is distinct. In the living specimens the eyes are reddish 

 brown, the part with the small facets darker. There are three ocelli 

 on the vertex and a pair of ocellar bristles. The antennæ are inserted 

 near to each other in the middle; they are five-jointed , the basal 

 joint is very short, the second almost globular and bearing bristles, 

 the third is soraewhat elongated and compressed; it has a straight 

 upper margin but is somewhat dilated downwards; the two last joints 

 form a terminal arista the basal joint of which is very short. Epistoma 

 narrow. Jowls are not developed. Proboscis is short, directed 

 downwards. Labrum is as long as proboscis, strong, high at the base, 

 curved downwards towards the apex. Hypopharynx is as long as 



