Myiocera. 279 



tage at Sorø; on Funen at Odense; on Fænø; in Jutland at Sønder- 

 borg, Sottrup, Kolding, Horsens, Frijsenborg, Hoed south of Grenaa, 

 Støvring and Thisted, and on Bornholm in Almindingen; the dates 

 are ^^/e — ^^/e- It occurs in and at woods on leaves of bushes and on 

 flowers of composites and umbellifers, not rarely at horders of 

 streamlets. 



Geographical distribution: — Europe; towards the north to 

 middle Sweden, and in Finland. 



2. M. ferina Fall. 



1816. Fall. Vet. Acad. Handl. 242, 14 et 1822. Dipt. Suec. Muse. 43, 14 

 {Musca). — 1826. Meig. Syst. Beschr. V, 42, 16 (Dexia). — 1844. Zett. Dipt. 

 Scand. III, 1286, 5 et 1855. XII, 4708, 5 (Dexia). — 1862. Schin. F. A. I, 560 

 (Dexia). — 1889. B. B. Denkschr. Akad. Wiss. Wien, LVI, 126, Tab. VIII, 

 Fig. 205. — 1896. Pand. Rev. Entom. XV, 158, 7 (Dexia). — 1907. Kat. palå- 

 arkt. Dipt. III, 451. — 1921. Baer, Zeitschr. f. angew. Ent. VII, 381. — 1924. 

 Stein, Arch. f. Naturgesch. 90, 6, 240, 2. — Dexia carinifrons Meig. (nec Fall.) 

 1826. 1. c. V, 45, 20. 



Male. Frons narrow above, about one fifth of the eye, somewhat 

 protruding; head higher than long; cheeks broad and jowls about 

 half as broad as the eye is high. Head silvery pruinose, jowls reddish 

 in certain views; frontal stripe velvet black. Orbits with very few, 

 small hairs; jowls black-haired behind. Occiput grey, with black 

 hairs and yellow hairs inwards. Antennæ black or brownish black. 

 Palpi blackish or brown, palest at apex. Thorax black, whitish grey 

 pruinose, with similar stripes as in carinifrons, the median likewise, 

 and more distinctly, divided into three. Thorax black-haired; four 

 postsutural dorsocentrals and generally three præsutural, but only 

 two postsutural acrostichals ; three intraalar bristles (generally). 

 Abdomen black, grey or whitish grey pruinose shifting with irregular 

 brown or blackish tessellations according to view; excavation on 

 second abdominal segment reaching hind margin. Abdomen black- 

 haired, with marginal bristles, a pair on second and third segment 

 and a row on fourth and fifth; sometimes there are four on third 

 segment. Legs black. Wings somewhat brownish tinged. Squamulæ 

 yellowish white. Halteres yellow. 



Female. Similar; frons broad, about as broad as the eye. 



Length 11 — 13,5 mm. 



M. ferina is more rare in Denmark than carinifrons and has 

 been taken only on Lolland at Maribo and in Jutland at Graasten 



