590 Syrphidae, 



than on the disc, pale. Abdomen black, coarsely punctate, dullish; 

 the first segment is yellow at the front margin, stretching baekwards 

 at the sides ; at each side the front margin is somewhat raised into a 

 swoUen part, which is yellow; the second, third and fourth segments 

 have yellow, likewise somewhat raised hind margins; abdomen has 

 thus the base yellow and three yellow bands ; it is clothed with short 

 hairs, which are partly black, partly yellow, but they are so exceedingly 

 short that they are almost not to be detected; they are longer only at the 

 basal corners and here yellow. Genitalia black with a little longer, 

 pale hairs. Venter black, shining, with pale hind margins to the seg- 

 ments, and with long, whitish hairs. Legs with the femora black with 

 base and apex yellow, on the hind femora the yellow basal part large, 

 and on the anterior femora the black colour stretches nearer to the 

 apex behind than in front; tibiæ yellow with the apical half blackish, 

 but generally the apex again more or less pale ; anterior tarsi brownish 

 with yellow base, or only brownish towards the end, hind tarsi quite 

 brownish ; hind femora thickened and curved, with two rows of black 

 spinules below, and there are traces of the same armature below the 

 apex of middle femora; hind tibiæ somewhat curved; the legs are 

 quite short-haired, only middle femora with somewhat longer hairs 

 behind; the hairs are mainly or all yellow. Wings with the anterior 



Fig. 202. Wing of C. conopsoides (J. 



half brown, down to vena spuria and on the outer part to the cubital 

 vein; the stem of the postical vein and the base of its upper branch 

 brown seamed. Squamulæ and fringes whitish. Halteres yellow. 



Female. Similar; vertex and frons black, above the antennæ a 

 yellow cross-band, interrupted in the middle. Epistomal stripe broader. 

 Hind femora slightly thickened and not curved. 



Length 11,5— 12,5 mm. 



This species is very similar to a Conops. 



Remarks: The above description is made from our two Danish 

 specimens; it will be seen that they differ somewhat from Schiner's 

 description, as they have the humeri only slightly yellow and no yellow 



