Sericomyia. 565 



mosen, Lyngby Mose, Geel Skov, Hillerød, Nyrup Hegn, Tisvilde; in 

 Jutland in Nørholm Skov at Varde, in Greisdal and Højenbæk Dal at 

 Vejle, at Horsens, Frijsenborg, Funder and Sminge near Silkeborg, 

 Støvring near Randers, Hald near Viborg, Rebbild near Skørping, 

 Frederikshavn and Jerup near Frederikshavn, and on Bornholm at 

 Hammeren. My dates are ^/g — ^^Is. It occurs in woods and fens on 

 various flowers often on Umbelliferæ. 



Geographical distribution: — Northern and middle Europe down 

 into France; towards the north to northern Svveden, and in Finland. 



2. S. lappona L. 



1758. Linn. Syst. Nat. X, 591 et 1767. XII, 2, 983, 27 et 1761. Fn. 

 Suec. 1794 (Musca). — 1822. Meig. Syst. Beschr. III, 344, 3. — 1843. Zett. 

 Dipt. Scand. II, 646, 4. — 1862. Schin. F. A. I, 331. — 1901. Verr. Brit. FI. 

 VIII, 637,2, figs. 435—436. — 1907. Kat. palåarkt. Dipt. III, 141. — Syr- 

 phus lapponum 1781. Fabr. Spec. Ins. II, 422, 4 et 1805. Syst. Antl. 226,' 7. 

 — 1816. Fall. Dipt. Suec. Syrph. 20, 8. 



Male. This species is somewhat similar to horealis, but it is much 

 smaller and less strong, Vertex black, frons whitish pruinose only at 

 the sides, for the rest black and shining, with a deep middle furrow; 

 epistoma with the black middle stripe broader than in horealis and 

 the central knob a little larger; vertex black-haired, frons with yellow 

 hairs at the sides, black on the middle ; epistoma haired as in horealis. 

 Occiput grey pruinose, with the black hairs above more numerous. 

 Antennæ reddish brown or dark brown. Thorax as in horealis, the 

 tuft-like hairs on præalar and postalar calli darker and less conspicuous; 

 Scutellum reddish, likewise with black hairs on the disc, yellow round 

 the margin. Abdomen black or bluish black, less dull, the hind mar- 

 gins of the segments shining, the fourth segment shining on the hinder 

 half; the bands are narrower than in horealis, bony white or pale 

 yellow, sometimes darker (in drying the bands generally turn dark 

 yellow as in horealis), and they are not or very slightly widening to- 

 wards the sides ; there are no pale hind margins to the segments, and 

 the bands are separated from the side margins. Abdomen haired as 

 in horealis, the hairs likewise following the ground colour but all or 

 almost all pale on fourth segment, except at the front margin, and 

 sometimes also along the hind margin of third segment; at the sides 

 they are yellow ; the long hairs at the basal corners are brownish red. 

 Genitalia black, shining, with long, yellow hairs. Venter black, shining, 

 with pale incisures and long, pale hairs. Legs red, front femora black 

 on the basal half or more, the black colour prolonged forwards behind; 

 middle femora black on the basal part, sometimes only behind: the 



