228 Orthorrhapha brachycera. 



hyaline, slightly yellowish. Veins brown or pale brown. Stigma faint, 

 yellowish, Halteres yellow, somewhat large. 



Female. Quite similar to the male; tlie ovipositor thick, conical, 

 directed upwards. 



Length 3 mm, 



S. pallida is very rare in Danmark, only a pair in copula has 

 been taken, on Lolland in Merrits Skov at Maribo on ^^/e 1873 

 (Schlick). 



Geographical distribution: — Europe down into Italy; its northern 

 limit is in Denmark. It is everywhere a rare species, only few 

 specimens are known; the female was not known to Loew. 



Remarks: Loew notes, that there is some irregularity in the wing- 

 venation of his four specimens, two specimens were normal, with a 

 cross-vein between the upper cubital branch and the radial vein, one 

 specimen had the cross-vein only in one wing, and one specimen had 

 no cross-vein at all; it is curious, that my specimens also show such 

 an irregularity; the female has the wings normal, but in the male 

 only the right wing is normal, the left is irregular, but in another 

 way than in Loew's specimens, as it is here not the cross-vein but 

 the base of the cubital fork, which is absent, so that we get a forked 

 radial vein and an unforked cubital vein. 



15. Hemepodpomia Meig. 

 Species of small size and slender shape; the colours are yellowish 

 to dark grey or brown. The head is elongated and of an ovate 

 shape, its longest axis is about in the longitudinal direction of the 

 body; it is somewhat, more or less, flattened, and as broad as or 

 narrower than thorax; the mouth aperture lies on the lower side. 

 Occiput is arched, short-haired, and with a couple of very small 

 bristles. The eyes are large, more or less elongated in the longitudinal 

 direction of the head ; they are separated in both sexes, the frons 

 sometimes being slightly narrower in the male than in the female; in 

 some species the eyes are touching below the antennæ in both sexes; 

 in this latter case the facets in the front part of the eye are enlarged ; 

 otherwise they are of equal or almost equal size. The incisure in the 

 inner eye-margin is present, but small. In the living specimens the 

 eyes are somewhat metallic, generally violet above, æneous green 

 below. The vertex has a small ocellar tubercle with three ocelli and 

 a pair of very small hairs. The antennæ are inserted near to each 

 other, a Httle above the middle; they are short, four-jointed ; the two 

 basal joints short, the third a little elongated, pointed oval and com- 

 pressed, it terminates with a short somewhat thread-like arista, which 



