44 Orthorrhapha brachycera. 



Female. Epistoma broader than in the male. Thorax generally 

 more greyish pruinose. Legs simple, withoiit spine on the middle 

 coxæ or squamular hairs on the middle femora, but they have more 

 and stronger bristles, the bristles at the apex of the front coxæ 

 stronger, and also black bristles at the apex of the middle coxæ; the 

 bristles on the posterior tibiæ stronger and more numerous. 



Length 5,5 — 6 mm. 



N. pallida is very rare in Denmark, we have only three specimens, 

 all females; at Hillerød in 1898 (Godskesen), at Tisvilde i^/t 1909, 

 and in Jutland at Hald near Viborg ^-'/u 1910 (the author). 



Geographical distribution:— Northern and middle Europe dovi^n 

 into Austria, Hangaria and Styria; towards the north to middle 

 Sweden; and in Finland. 



3. N. suturalis Fall. 



1823. Fall. Dipt. Suec. Dol. 21, 32 (DoUchopits) . — 1830. Meig. Syst. 

 Beschr. VI, 363,30 {Porphyrops). — 1838. Meig. ibid. VII, 155 {Medeterm). 



— 1843. Zett. Dipt. Scand. 11, 613, 99 et 1849. VIII, 3097 {DoUchopus). 



— 1862. Schin. F. A. I, 183. — 1903. Kat. palåarkt. Dipt. II, 293. 



Male. Vertex and frons grey, the bristles black, the postvertical 

 bristles yellow. Epistoma narrovi^, light grey. Palpi whitish yellow, 

 Occiput grey; postocular bristles pale yellow. Antennæ yellow, arista 

 brown. Thorax grey, with two narrow, indistinct stripes, one on 

 each side of the acrostichal bristles; humeri a httle reddish. Scutellum 

 yellow, with the base grey; it has two black bristles and on each 

 side a small hair. Postscutellum grey. Pleura grey, metaepimera 

 yellow; there is a whitish prothoracic bristle. Abdomen yellow or 

 brownish yellow% somewhat shining, with narrow, brown, not very 

 distinct incisures at the front margin of the second, third and fourth 

 segments, generally very indistinct on the second segment, only more 

 distinct at the sides; the lifth segment is brown, its ventral plate is 

 black and produced forwards as two triangular ventral teeth; the 

 sixth and seventh segments hidden. Abdomen clothed with short, 

 brown or blackish brown hairs, at the side margin the hairs are yel- 

 low, and the fifth segment is partly yellow-haired. At the hind margin 

 of the segments there are somewhat longer, black bristles, long on 

 the first segment. Venter yellow and yellowish haired. Hypopygium 

 black, shining; the eighth segment has some pale hairs, and is a little 

 pruinose at the hind margin ; otherwise the hypopygium is constructed 

 about as in quadrifasctata, the outer lamellæ likewise small, almost 

 hidden, pale and pale-hairy; of the inner lamellæ a pair of hairs are 

 seen at the end. Legs simple, yellow, hind tibiæ and tarsi slightly 



