(58 Oillionhapha brachycera. 



the margin of the last segment the two al llie apex are shorl: it lia.s 

 a lenght of about 7 mm. 



M.polita is very common here, it occurs nearly everywhere, gene- 

 rally in great numbers, and it has been taken in most parts of Den- 

 mark; it is common in gardens; my dates are '/d — "ii. The larvæ 

 have been taken at Randers in decaying vegetable matter and in 

 Damhusmosen in great numbers in dung, in the latter place on the ^'/m. 



Geographical distribution: — Northern and middle Europe down 

 into France, towards north to northern Scandinavia and Lapland; 

 it occurs also in North America in Canada. 



2. M. flavicornis Meig. 



1822. Sargiis, Meig. Syst. Beschr. 111. 112. 10. — IS.no. Low. Verh. 

 Zoo), hot. Ver. Wien, V, 139. — 1862. Chnisoniyia. Scliin. F. A. 1, 23. — 

 1903. Kat. palaarkt. Dipt. II, 34. — 1842. Chrysomyia paUipes, Zett. Dipt. 

 Scand. I, 155, 3 and Chrysomyia cyaneiventris ibid. 156, 4. 



Male. Eyes almost bare, greenish. unicolorous: facets in the two 

 upper thLrds larger than below, the dividing line sharp. Front and 

 face metallic greenish, front with somewhat depressed pubescence. 

 Antennæ yellowish or brownish with the basal joints yellowish. 

 Thorax golden green with very short, dark brownish or blackish 

 pubescence. On the sides the margin between the dorsum and the 

 pleura is narrowly yellowish from the humerus to the wing-root. the 

 yellowish stripc is slightly widened behind. Abdomen golden green 

 or slightly copper-coloured, in single cases nearly black, with short. 

 dark brownish pubescence. Venter dark, somewhat metallic greenish. 

 Legs yellow; the posterior femora somewhat darkened in the middle: 

 Ihe hind tibiæ slightly darkened near the apex and the tarsi likewise 

 towards the ands. Legs very finely pubescent in the ordinary way. 

 Wings hyaline with brownish veins, the third of tlie veins rising from 

 Ihe discai cell very thin and inconspicuous; stigma pale yellowish. 

 Halteres yellow. 



Feniale. Eyes bare. Front broad. metallic bluish. hinder eye- 

 margin broad, of the same colour. Thorax golden greenish or bluish. 

 with extremely short, whitish pubescence. Abdomen generally metallic 

 bluish. pubescence paler than in the male. 



Length 3, o — 4.6 mm. 



This species is nearly related to polita but, besides by the distinctly 

 smaller size, it is distinguished by the paler antennæ which have, at 

 all events the basal joints yellowish, by the somewhat paler legs 

 and the yellowish stripes on the sides of thorax. 



M. flavicornis is not common in Denmark, but il has been taken 



