Syrphus. 335 



more pale-haired as only a few hairs at the tip are black. The basal 

 abdominal spots large and white, much larger than in the male as 

 they are produced to the front margin of the segment and going in 

 fuU width over the side margin ; the other spots as in the male but 

 going over the side margin. Legs paler than in the male, the anterior 

 tibiæ with only faint or almost wanting rings, hind knees more 

 distinctly pale. 



Length 8,5 — 10 mm. 



Remarks: Verrall describes the hairs on scutellum as mainly yellow, 

 with only a few black hairs near the tip; about the female he says 

 nothing; my males have scutellum quite black-haired or with more 

 or fewer yellow hairs at the base, while the females have it almost 

 quite pale-haired. — I have examined the type of Fabricius, which 

 is present in the collection of Tonder Lund; it is a female. 



S. umhellatarum. is somewhat rare in Denmark ; Ordrup Mose, at 

 Fure Sø, Geel Skov; on Lolland at Strandby; in Jutland at Horsens 

 and in Marselisborg Skov at Aarhus. My dates are '^h—'^^k. I have 

 taken it in a fen on Umbelliferæ. 



Geographical distribution: — Northern and middle Europe down 

 into Austria and Styria; towards the north to middle Sweden. It is 

 also recorded from North America but with doubt. 



32. S. compositarum Verr. 



1873. Verr. Eutom. Month. Mag. IX, 254 et 1901. Bnt. Fl. VIII, 412, 

 31, fig. 304. — 1907. Kat. palåarkt. Dipt. III, 62. — S. umhellatarum 

 Meig. (nec Fabr.) 1822. Syst. Beschr. III, 320, 68. — 1843. Zelt. Dipt. 

 Scand. II, 734, 36 et 1849. VIII, 3142, 36 et 1859. XIII, 5098, 36 {Scaeva). 



This species is very similar to umhellatarum. Male. Epistoma 

 with a broader, black line, produced a little higher up; the lower 

 side parts of epistoma a little darker. Eyes not quite bare, but the 

 hairs very short and scattered. Thorax greenish æneous, slightly 

 shining, dull or duUish, clothed with yellowish brown hairs. Scutellum 

 black-haired with some pale hairs intermingled. Pleura with whitish 

 hairs. Abdominal spots more yellow than in umhellatarum; the basal 

 spots small, roundish, not produced towards the margin at the upper 

 corner; the other spots as in umhellatarum^ all isolated. Genitalia 

 quite greyish pruinose, with pale hairs. Legs more black than in 

 umhellatarum, the anterior feniora with only the apex yellow, tibiæ 

 with the apical half dark, but, however, a middle ring darkest. 



Female. Likewise similar to umhellatarum, but the frons con- 

 siderably more black as the dust spots are somewhat narrow, forming 

 a bow over the middle of the frons and going only narrowly down 



