Chilosia. 



137 



Brernersvold, Kældskov and Strandby; the dates are ^/s — Vt. I have 

 taken it on flowers on humid meadows. 



Geographical distribution:— Northern and middle Europe and, 

 as it seenris, down into Italy; towards the north to northern Sweden, 

 and in Finland. 



4. C. vicina Zett. 



1849. Zett.Dipt. Scand. VIII, 3175, 38—39 et 1859. XIII, 6021, 38—39 

 (Eristalis). — 1894. Beck. Nov. Aet. Leop. Garol. Akad. LXII, 342, 12, Fig. 132. 

 — 1907. Kat. palåarkt. Dipt. III, 41. — Eristalis Schmidtii Zett. 1843. 

 Dipt. Scand. II, 814, p. p. var. b. 



Male, Eyes bare. Frons greyish pruinose, dull, with a longitudinal 

 groove; vertex and frons with blaek hairs. Epistoma much hollowed 

 below the antennæ, the central knob somewhat strongly protruding, 

 about as in antiqua, and epistoma hollowed 

 between it and the mouth edge; it is pruinose 

 below the antennæ, for the rest very slightly 

 pruinose and almost not descending. Eye- 

 margins somewhat narrow, distinctly punc- 

 tate and with short, white hairs. Occiput 

 grey pruinose along the eyes and below them, 

 the pruinosity stopping here; the hairs are 

 pale, but above there are long, black hairs. 

 Antenna small, black, third joint roundish, 

 not longer than broad; arista not long, 

 distinctly but short-pubescent. Thorax black 

 or generally greenish or bluish black, densely 

 and coarsely punctate, but less coarsely than 

 mnigripes, somewhat shining; it has a double pubescence as in nigripes, 

 but the hairs are shorter and more decumbent, and the long hairs 

 much more scattered; the long hairs are black or blackish, the short 

 yellowish, but mixed with dark hairs, these latter are especially present 

 on the middle, generally in such a way, that when viewed from in 

 front a dark middle band is seen and sometimes also traces of a dark 

 cross-band; there are distinct and not weak notopleural, postalar and 

 scutellar marginal bristles; also supraalar bristles are present, but 

 shorter. Pleura with longish, pale hairs, only the bristly hairs at the 

 top of mesopleura black. Abdomen black, densely punctate; it is 

 shining, but dullish on first and second segments and slightly and 

 indefmitely on third segment; it is clothed with short, yellowish hairs, 

 longer on the sides at base; on the posterior part of the second and 

 on the whole disc of third and fourth segments the hairs are black. 



Fig. 61. Head of 

 C. vicina cf. 



