548 Syrphidae. 



species in a poplar, attacked by Cossus, in Holte on ^^/s, and pupæ 

 were taken the next spring on Ihe same place on ^-^/s at the foot of the 

 tree (Kryger). The larvæ of the two species thus hved here together, 

 but only a couple of specimens of ruficornis were bred (and only one 

 was secured) so that evidently the larva of cuprea was by far the 

 most numerous; the specimens of ruficornis developed on ^'"U. 



Geographicai distribution:— Europe down into Italy (if Rondani's 

 species is correctly determined); Zetterstedt does not mention it from 

 Sweden, but Loew mentions (1. c. 619) that he had got a specimen 

 from Zetterstedt so that the species goes towards the north to Sweden. 



Remarks: The synonymy of the two species is mainly due to 

 Loew; it is perhaps doubtful whether ruficornis Fabr. is this species 

 or cuprea; in the coUection of Tonder Lund and Sehestedt there is a 

 specimen labelled ruficornis, and it is cuprea ; Fabricius says "Habitat 

 in Daniæ floribus", but as he does not quote the said collection, the 

 specimen is certainly not the type, but this latter is no doubt in Kiel. 

 — Stæger did not know the species but a few specimens were in his 

 collection under cuprea ; Rondani remarks (Dipt, Ital. Prodr. II, 1857, 

 147) that he had got the species from Denmark from Stæger; it is 

 most probable that it has been cuprea, and Rondani's description 

 seems to me to answer best to the dark variety of cuprea. 



44. Spilomyia Meig. 



Large, wasp-like flies with yellow spots on thorax and very con- 

 spicuous yellow bands on abdomen. Head semiglobular, broader than 

 high and broader than thorax; it is a little excavated behind, especi- 

 ally above. Eyes touching in the male for a not long distance, separ- 

 ated in the female; they are bare, with somewhat irregular dark, 

 longitudinal bands and spots; in the male the facets are enlarged on 

 the front part, towards the suture. Vertex elongated; frons a little 

 prominent, without hairs. Antennæ inserted above the middle of the 

 head; they are a little elongated as the two basal joints are some- 

 what long, each as long as or a little longer than the third joint, 

 which is roundish; arista inserted near the base, as long as the 

 antennæ; the basal antennal joints have small hairs and short bristles 

 at the apex above and below, third joint and arista microscopically 

 hairy. Epistoma very slightly hoUowed, almost straight from the 

 antennæ to the mouth edge, slightly more hollowed in the female; it 

 is almost not descending; it is yellow with a more or less distinct, 

 black middle stripe, and it has erect hairs except along the middle, 

 the lower side parts are bare. Jowls small, not or almost not 



