Ghilosia. 153 



and the short hairs at the apex of posterior femora black; tibiæ 

 blackish-haired except the usual golden pubescence on front and hind 

 tibiæ; hind femora somewhat strongly black-setulose below except at 

 the base; hind metatarsus not or ahnost not thickened. Wings more 

 or less brownish tinged, most towards the anterior margin; the upper 

 marginal cross-vein strongly curved above, the upper angle rectangular. 

 Squamulæ whitish with a whitish fringe. Halteres yellowish with the 

 knob brovvn or blackish. 



Female. Frons somewhat broad, widening downwards, trisulcate 

 (generally); it has yellow hairs intermingled with longish, darker hairs, 

 especially above and on the vertex. Antennæ with the third joint a 

 little larger than in the male. Thorax with double pubescence as in 

 the male, but the hairs much shorter and decumbent; the bristles 

 more conspicaous than in the male. Abdomen shining, a little in- 

 defmitely dullish on the middle of second and third segments, haired 

 chiefly as in the male, but the hairs at the sides shorter, except at 

 the base, and all pale. Hind femora less setulose below and only on 

 the apical two thirds. Halteres quite orange. 



Length 10—11 mm; sometimes smaller specimens occur down to 

 scarcely 9 mm. 



Remarks: I have examined the type-specimens of Eristalis ater 

 Fabr. in Sehestedt's collection; there are two, the specimen on the 

 label is a female of albitarsis, the other a female of the present species. 



C. variabilis is common in Denmark; Charlottenlund, Ordrup Mose, 

 Ermelund, Dyrehaven, Lyngby Mose, Hareskov, Ørholm, Geel Skov, 

 Søllerød, Hillerød, Nyrup Hegn, Nordskoven at Jægerspris ; on Lolland 

 at Maribo, Strandby, Kældskov, Bremersvold and Ghristianssæde ; on 

 Funen at Middelfart, Odense, and on Fænø; in Jutland in Nørholm 

 Skov at V^arde, Højenbæk Dal at Vejle, Horsens and Frederikshavn, 

 and on Bornholm at Hasle. My dates are ^/s — ^^/s ; I have taken it 

 in copula on ^Y''- It occurs in woods and fens on various flowers. 



Geographical distribution : — All Europe, towards the north to 

 northern Sweden, and in Finland. 



12. C. honesta Rond. 



1868. Rond. Atti Soc. .ital. Se. Nat. XI, 30. — 1894. Beck. Nov. Aet. 

 Leop. Carol. Akad. LXIl, 255. — 1901. Verr. Brit. Fl. VIII, 226, 9. — 

 1907. Kat. palåarkt. Dipt. III, 29. — C. lasiopa Kow. 1885. Wien. ent. Zeitg. 

 IV, 206. — 1894. Beek. 1. c. 386, 43, Fig. 108. 



Male. Eyes hairy with pale hairs. Frons black, dusted at the 

 sides, with a longitudinal groove; frons and vertex black-haired. 

 Epistoma distinctly pruinose, with a triangular, whitish spot at each 



