Agathomyia. 19 



bristles on anteroventral side; hind femora have a short, but strong 

 and blimt bristle below near base. Wings clear but rather yellow, 

 in third costal segment more saturated; veins blackish. Squamulæ 

 pale with brownish margin. H alteres yellow with the outer side of 

 the knob blackish. 



Female. Somewhat similar. Frons broad, grey. Antennæ witliout 

 the long bristle above on second joint, present in the male. Thorax 

 grey, not brownish. Abdomen much as in the male, yellow with 

 broad brownish bands on the segments, more or less interrupted 

 in the middle and only as small spots on second segment. Abdomen 

 short-haired except at base; at the ventral apex some black bristles. 

 Hind legs, especially metatarsus, much less dilated than in male, 

 and only hind femora distinctly fringed above; middle tarsi with the 

 three last joints slightly dilated; the various bristles present in 

 the male are here wanting, except the apical spur and a dorsal bristle 

 on middle tibiæ. Wings generally less yellow. 



Length 3,5 to fully 5 mm. 



A. Falleni is rare in Denmark and only taken in Frederiksberg 

 Have at Copenhagen, in some number (Stæger), in Ermelund and 

 in Geel Skov (the author); the dates are in September; I took it 

 running on leaves of Acer. 



Geographical distribution: — Northern and middle Europe 

 down into Austria; towards the north to southern Sweden; it seems 

 to be an autumn species, Zetterstedt records it from ^^/g — ^7ii- — 

 I have examined Zetterstedt's type specimens in Lund. 



2. A. elegantula Fall. 



1815. Fall. Dipt. Suec. Plat. 7, 2 et 1826. Suppl. 4, 4 (Callomyza). — 1819. 

 Zett. Vet. Acad. Handl. 80, 33 (Callomyza) et 1844. Dipt. Scand. III, 916, 7 

 (Callomyia). — 1824. Meig. Syst. Beschr. IV, 13, 3 (Callomyia). — 1900. Verr. 

 Cat. eur. Platyp. 4 {Callimyia). — 1907. Kat. palåarkt. Dipt. III, 184 {Calli- 

 myia). — 1910. Wahlgr. Entom. Tidsskr. 32, 33 et 232, 7. — 1910. Wood, 

 Ent. Month. Mag. 2, XXI, 45. 



Male. Vertex, frons and face black. Occiput black, with black 

 hairs below. Antennæ black, third joint of a shape as in Falleni. 

 Thorax velvet black and pleura blackish. Abdomen velvet black, 

 apical part of first segment, second segment and third segment, 

 except a dorsal median stripe, orange; abdomen is thus orange on 

 basal half, black on apical half with a black prolongation along 

 middle of third segment to its base; apex of sixth segment grey, 



