152 Tachinidae. 



Zett. Ins. Lapp. 656, 14 et 1845. Dipt. Scand. IV, 1328, 1 {Musca). — 1862. 

 Schin. F. A. I, 584. — 1896. Pand. Rev. Entom. XV, 213, 8. — 1907. Kat. 

 palåarkt. Dipt. III, 548. — 1917. Kram. Abhandl. Nat. Geseli. Gorlitz, 27, 

 28, 291, Fig. 3. — 1924. Stein, Arch. f. Naturgesch. 90, 6, 265, 3. — Musca 

 carnivora Fabr. 1784. Entom. Syst. IV, 313, 4 et 1805. Syst. Antl. 285, 5. 



Male. This species is similar to the preceding. Frons quite 

 narrow, the orbits touching or nearly; they are black above, down- 

 wards together with the cheeks yellowish grey; jowls black, grey 

 pruinose. Frontal stripe black or brown. Jowls black-haired but 

 with red hairs behind and below. Occiput with pale hairs and black 

 hairs behind postocular bristles, below the hairs are red. Thorax as 

 in the foregoing, black- or brownish black-haired. Abdomen like- 

 wise as in erythrocephala, but the whitish pruinosity thinner and less 

 shifting, mainly leaving the hind margins uncovered. The marginal 

 hairs on third segment not bristly and also the marginal bristles on 

 fourth segment smaller than in erythrocephala and more numerous. 

 Legs and wings as in erythrocephala. 



Female. Similar; frons as broad as or a little broader than 

 the eye. 



Length 9—12 mm. 



C. vomitoria is less common than erythrocephala; Copenhagen, 

 Amager, Damhussø, Charlottenlund, Bidstrup Hegn, Grib Skov, 

 Jyderup and in Jutland at Sønderborg, Kliplev and Skanderborg; 

 the dates are ^^/g — ^^/g. It occurs together with the foregoing, but 

 is generally not seen in houses. 



Geographical distribution: — All Europe, towards the north 

 to northern Sweden, and in Lapland; further in Japan and North 

 America. 



22. Onesia R. D. 



Species of medium size or small, of bluish, sometimes greenish 

 colour, with only shght pruinosity. Head about as broad as thorax, 

 somewhat flat behind, higher than long. Frons in male narrow, 

 sometimes the orbits nearly or quite touching, in female the frons 

 broad, it is more or less to slightiy protruding, and cheeks broad 

 or narrow. Jowls broad, from less than half to two thirds of the 

 height of the eye. In male almost parallel ocellar and inner vertical 

 bristles, in female the ocellars stronger and diverging and also outer 

 vertical and two orbital bristles present. Postocellar and occipital 



