138 Syrphidae. 



Venter black, shining, with pale hairs, longish on the two first seg- 

 ments. Legs black, pubescence mainly as in tiigripes; hind femora 

 black setulose beneath, hind metatarsi slightly thickened. Wings very 

 sliglitly tinged or almost hyaline; upper marginal cross-vein almost 

 straight, the upper angle somewhat acute. Squamulæ whitish with a 

 whitish fringe. Balteres with the peduncle yellowish brown, the knob 

 brown or blackish brown. 



Female. Frons of medium breadth, widening downwards, slightly 

 trisulcate; it has short, yellow hairs with some black intermingled, 

 and the vertex is black-haired. Antennæ a little larger than in the 

 male. Thorax and abdomen coarsely punctate, but, however, less 

 coarsely than in nigripes; thorax has short, depressed, greyish yellow 

 hairs, but on the middle there is a longitudinal patch of black hairs; 

 abdomen has likewise short, depressed, pale hairs, but black hairs on 

 the middle. Hind femora only setulose in the apical half. Halteres 

 orange. 



Length 6 to about 8 mm. 



This species is much like nigripes, but is in general smaller; it 

 has thorax and abdomen a little less coarsely punctate, and the wings 

 are incoloured or almost so ; thorax is in the male shorter-haired and 

 in both sexes generally paler-haired, and the black band or longitudinal 

 patch on thorax, formed of the hairs, is somewhat characteristic. — 

 According to Zetterstedt (1. c, VIII) it was Stæger who first separated 

 it as a species from nigripes^ and the name is due to him ; I have 

 examined Stæger's specimens, 



C. vicina is not rare in Denmark ; Søndermarken, Ermelund, Dyre- 

 haven, Ørholm, Geel Skov, Hillerød, Tyvekrogen, Tisvilde, Roskilde; 

 on Lolland at Bremersvold and Strandby; on Langeland at Lohals; 

 on Funen at Odense and in Jutland at Frijsenborg and Laven near 

 Silkeborg. The dates are ^^/5 to the first part of August. 



Geographical distribution: — Scandinavia, Denmark and Finland, 

 towards the north to northern Svveden, Perhaps it goes down into 

 France if the record in Pandellé (Rev, entom. XXIV, 1905, 40) is 

 correct. 



5. C. pubera Zett. 



1838. Zett. Ins. Lapp. 613, 16 et 1843. Dipt. Scand. II, 810, 34 et 

 XII, 4669, 34 (Eristalis). — 1857. Loew, Verh. zool. bot. Geseli. Wien VII, 

 324, 24. — 1862. Schin. F. A. I, 278. — 1894. Beck. Nov. Aet. Leop. Garol. 

 Akad. LXII, 346, 15, Pig. 140. — 1907. Kat. palåarkt. Dipt. III, 36. 



Male. Eyes bare. Frons a little pruinose, slightly shining, with a 

 longitudinal groove. Vertex and frons black-haired. Epistoma much 



