Arctophila. 561 



likewise slightly curved and with the spur-like prolongation very short ; 

 legs with the femora less densely and long-haired than in homhiformis, 

 the hairs nearly all black or more or less yellow below and behind 

 the anterior femora, especially towards the base, and just at the base 

 of the hind femora ; on the front tibiæ the usual, adpressed pubescence 

 on the anterior and ventral side is brown. Wings somewhat tinged, 

 from the base to the stigma they are yellow on the anterior part; 



Fig. 188. Wing of A. mussitans S- 



below the stigma is a somewhat broad, brown fascia; no stigmatical 

 cross-vein; cubital vein very slightly curved; medial cross-vein plaeed 

 a little before the middle of the discai cell. Squamulæ blackish with 

 a brown fringe. Halteres with the peduncle yellow, the knob blackish. 



Female. Vertex and frons broad, widening downwards, brownish 

 yellow pruinose, the hairs yellow. Legs with the hind femora straight 

 and thinner than in the male, and all femora more pale-haired, 



Length 13—16 mm. 



This species is rather similar to Criorrhina oxyacanthae. 



In the collection of Tonder Lund and Sehestedt are two speci- 

 mens of this species, a male and a female, which I have examined; 

 as Fabricius refers to the said collection the specimens are, no doubt, 

 the types. 



A. mussitans is somewhat common in Denmark ; vicinity of Copen- 

 hagen, Ermelund, Hillerød, Vemmetofte, at Slagelse; in Jutland in 

 Greisdal at Vejle, at Horsens, Frijsenborg, Rye near Silkeborg and 

 Rebbild near Skørping; on Bornholm at Blykobbe Aa and at Hammeren. 

 My dates are ^'^h — "^/lo, it is thus a somewhat late occurring species. 

 It occurs in and at woods and also on fieids, and it frequents various 

 flowers, 



Geographical distribution : — Northern and middle Europe down 

 into France and also recorded from northern Italy ; towards the north 

 to southern Sweden. 



36 



