120 Orthorrhapha brachycera. 



cubital veins a little darker; the cubital fork about rectangular. 

 Stigma faint, yellowish. Halteres black. 



Female. Frons broad, grev. The bristles on thorax very short, 

 and abdomen likewise short-haired. Front tibiæ ciliated above; 

 posterior legs somewhat compressed, the middle femora ciliated on 

 both sides, the hairs very slightly scaly, the hind femora haired in 

 the same way, but the hairs a little more broadened, tow^ards the 

 apex with some bristly hairs on the antero-ventral side; the posterior 

 tibiæ short ciliated, especially on the dorsal side. Wings slightly 

 brownish; veins brown. 



Length 3,2—3,8 mm. 



E. chioptera is a common species in Denmark, but it has, how- 

 ever, hitherto only been taken on Sealand; Charlottenlund, Ordrup 

 Mose, Ermelund, Dyrehaven, Ørholm, Geel Skov, Tyvekrogen and on 

 the little island Egholm at Skelskør. It is a spring species, my dates 

 are ^^/o— 2*^/6. It occurs in grass, low herbage and on bushes, I have 

 especially taken it on flowering Prunus spinosa, and it is often 

 present in no small numbers. 



Geographical distribution: — Northern and middle Europe down 

 intoFrance; towards the north to middle Scandinavia, and in Finland. 



19. E. prodromus Loew. 



1867. Loew, Bed. ent. Zeitschr. XI, 42 et 54, 13. - 1903. Kat. 

 palåarkt. Dipt. II, 243. 



Male. Eyes contiguous; epistoma greyish black. Occiput of the 

 same colour, with black, downwards paler hairs. Labrum scarcely 

 longer tlian the head is high; palpi black. Antennæ black, shorter 

 than the head. Thorax black, shining, unstriped. The dorsocentral 

 and acrostichal bristles short, black, biserial, the former a little longer 

 and uniserial behind. Further a humeral bristle, a posthumeral, about 

 three notopleural, a supraalar and a postalar bristle, all black, some- 

 what short and not much conspicuous between the other, more or 

 less strong hairs present at the sides of the disc. Scutellum with 

 two black marginal bristles. Pleura black, very slightly greyish 

 pruinose; the hairs on metapleura black. Abdomen black, somewhat 

 shining, clothed with short, whitish or greyish white hairs; venter 

 similarly coloured and haired. Exterior genitalia small, the lower 

 lamellæ broad and short, somewhat triangular; the upper lamellæ 

 are seen above the lower, so far as I could see they seem to be 

 divided into two branches, the lower of A\'hich is lamelliform, the 

 upper directed upwards, small and somewhat styliform. Penis directed 

 upwards between the lamellæ, slightly curved, with a black, shining 



