Volucella. 395 



mulæ brownish with a brownish yellow fringe. Halteres with the 

 knob brown. 



Female. Likewise similar to the female of rostrata, but thorax 

 much more æneous, not bluish; it is more grey than in the male, 

 the black stripes narrower but more distinct; the hairs short but 



Fig. 149. Wing of B. campestris (J. 



longer than in rostrata, brown but generally more or less black in 

 the middle behind. The bristles at the seutellar margin less strong 

 than in rostrata. Abdomen either quite reddish or with an inter- 

 rupted black dorsal line and narrow incisures, but always with the 

 margin black; it is often rather darkened and brown. Legs as in the 

 male. Squamulæ pale yellowish. 



Length about 8 to 11 mm, 



This species is similar to rostrata but distinguished with certainty 

 by the colour of thorax and abdomen and of the legs, as also by the 

 different hairiness of thorax. 



B. campestris is common in Denmark; Charlottenlund, Ordrup 

 Mose, Dyrehaven, Lyngby Mose, Nordskoven at Jægerspris, Sorø, Ny- 

 raad near Vordingborg; on Lolland at Bremersvold, Strandby and in 

 Kældskov; on Langeland at Lohals; on Funen at Lundeborg on the 

 eastern coast; in Jutland in Vejle Nørreskov, at Horsens, in Marselis- 

 borg Skov at Aarhus, at Frijsenborg and Frederikshavn, and fmally 

 on Bornholm. My dates are ^^'k — ^h. It occurs on various flowers 

 in woods and fens, sometimes in great numbers. 



Geographical distribution : — Europe down into Italy, towards 

 the north to northern Sweden. 



IL Volucellinae. 



28. Volucella Geofifr. 



Robust species of large size, either densely pilose or more slightly 

 hairy. The colours are rather various in the various species, thorax 

 is dark or brown, abdomen quite or almost quite black, or with the 



