84 Orthoirhapha brachycera. 



Length 4,6 — 5,2 mm. 



This species is in the female rather similar to melanopus, but is 

 distinguished by tlie anterior tibiæ being pale at the extreme apex, 

 and the small ventral bristles on the hind tibiæ being more densely 

 placed; also the bristles on the legs differ somewhat. 



D. picipes is not rare in Denmark, though it cannot be termed 

 common; Ordrup Mose, Ermelund, Dyrehaven, Ørholm, Lyngby Mose, 

 Hillerød and Præstevang at Hillerød, Sorø; on Funen at Veflinge; in 

 Jutland at Funder near Silkeborg and Hald near Viborg, and on 

 Bornholm at Rønne and Almindingen. My dates are ^/g to the last 

 part of July; Stæger records it from May. It occurs in fens and on 

 humid piaces at the outskirts of woods. 



Geographical distribution : — Northern and middle Europe, down 

 into France; tow^ards the north to northern Sv^^eden, and in Finland. 



10. D. varitibia n. sp. 



Male. Vertex and frons green. Epistoma rather narrow, white. 

 Palpi blackish. Occiput green, grey pruinose; postocular bristles black. 

 Antennæ black, about as long as the head, third joint triangularly 

 ovate, as long as broad. Thorax dark greenish or olive greenish, a 

 little brov^nish pruinose; scutellum flinely yellov^-haired at the margin; 

 postscutellum grey pruinose. Pleura green, grey pruinose; propleura 

 with fine, pale hairs and a black prothoracic bristle. Abdomen green, 

 bronze-coloured above, finely whitish pruinose downwards; the hind 

 margins of the segments dark. It is clothed with short, black hairs, 

 and has somewhat long, hindmarginal bristles. Venter grey, a little 

 yellow-haired at the base. Hypopygium somewhat large, black, greyish 

 pruinose ; the eighth segment with black hairs, and yellowish pruinose 

 at the upper margin; there are somewhat projecting, rounded posterior 

 ventral lobes, with a hair at the apex; they issue more basally than 

 commonly, and do not reach the end of the hypopygium ; the inner 

 lamellæ fully half as long as the outer, curved downwards, the median 

 pointed, the lateral dilated and with excisions at the apex; the outer 

 lamellæ rather small, narrowed towards the end, whitish, with a nar- 

 now, blackish margin, only broad at the end ; at the latter there are 

 some teeth with curved, black hairs, the ventral margin slightly ser- 

 rated, with distant, black, almost straight hairs, and inwards with 

 dense, somewhat strong, curved hairs; the dorsal margin has rather 

 long hairs. Legs black, coxæ grey, anteriorly whitish grey pruinose; 

 also the femora somewhat pruinose; knees somewhat broadly reddish; 

 front tibiæ yellowish, with an indistinct, dark ring below the base, 

 middle tibiæ likewise yellowish, with a distinct and broad dark ring 



