48 Orthori-hapha brachycera. 



apical bristles, also the posterior metatarsi have some bristles, the 

 hind ones only below. Wings yellowish; veins brown; the discai vein 

 with a considerable bend, the first posterior cell somewhat narrowly 

 open; the posterior cross-vein rather near the middle; axillary lobe 

 somewhat developed. Squamulæ whitish yellow, with a whitish fringe. 

 Halteres yellow. 



Female. Epistoma somewhat broad. Abdomen with four distinct 

 bands as the band on the fifth segment is conspicuous. Front tarsi 

 of common shape, longer than the tibiæ, the metatarsus about as 

 long as the three foUowing joints; claws and pulvilli not enlarged. 



Length 3,5— 4 mm. 



The female of this species shows resemblance to the female of 

 quadrifasciata, and it was also originally confused with it by Zetter- 

 stedt, and it was first later, in vol. VIII, that, advised by Stæger, he 

 distinguished the two species correctly; quadrifasciata is distinguished 

 by the grey spot on thorax, the bands on abdomen being incised 

 and the postscutellum more or less grey, and finally it has the first 

 posterior cell more broadly open. 



iV. Erichsoni is very rare in Denmark, we have only one specimen, 

 a male, caught many years ago, and without any locality given. 



Geographical distribution:— Enrope down into Styria and Hungaria; 

 towards the north to southern Sweden; and in Finland. 



3. Cutapsus Loew. 



Head a little broader than thorax, and in the male a httle higher 

 than broad, in the female broader than high; it is somewhat short, 

 and a little arched behind. Vertex slightly excavated; the ocellar 

 tubercle a little prominent. Frons somewhat broad, broadest in the 



Fig. 11. Antenna of E. aulicus d". From the inside. X 65. 



female, a little decreasing in breadth towards the antennæ, especially 

 in the male, slightly in the female. There are ocellar, outer vertical 

 and postvertical bristles; on the posterior side of the ocellar tubercle 

 a pair of small bristles. Eyes large, somewhat oval, hairy; the facets 

 slightly enlarged towards the epistoma in the male. The eyes are 



