16 Platypezidae. 



margin, shining; below there is a pair of simple, rod-like appendages, 

 issuing from a globular part. Legs coloured mainly as in amoena 

 and haired in the same way, and the hind legs similarly shaped; 

 near the base of hind femora there is a longer bristle below (also often 

 present or indicated in amoena) and middle tibiæ have generally 

 two dorsal bristles beside each other. Wings less yellow or not at 

 all. Halteres with the peduncle brown, knob black. 



Female. As in amoena of qiiite different appearance. Eyes 

 separated, frons silvery; vertical and frontal bristles as in amoena. 

 Palpi yellow. Thorax as in amoena with silvery humeral spots and a 

 silvery hind band. Abdomen with four yellow or silvery bands, the 

 first going over second and hind margin of first segment, the second 

 and third at hind margins of third and fourth segment, and the 

 fourth occupying nearly the whole sixth segment; the two middle 

 bands are narrower than the basal and apical. The two first bands 

 are yellow, more or less silvery, the two last silvery. Legs yellow 

 with tip of hind femora, hind tibiæ and tarsi and ends of anterior 

 tarsi black, The hind legs and middle tarsi dilated as in amoena^ 

 and front and hind femora shorter-haired than in the male; middle 

 tibiæ generally with one dorsal bristle, and a distinct long bristle 

 below hind femora at tip but no bristle at base. Halteres orange. 



Length 3,5 — 4 mm, it is thus smaller than amoena. 



C. speciosa is common in Denmark and sometimes present in 

 great numbers; Geel Skov, Holte, Tisvilde, Stensby Skov, on Lange- 

 land at Lohals (the author), on Falster at Resle (H. J. Hansen) 

 and Sortsø (the author), on Lolland at Maribo and in Aasø Skov, 

 on Funen at Langesø (Schlick), and in Jutland at Hejls, Ry and 

 Skørping (the author); the dates are Ve— '/s- It occurs in the same 

 way as amoena and sometimes in company with it. At Tisvilde I 

 took it in July in very great numbers on Kubus. 



Geographical distribution: — Northern and middle Europe 

 down into Belgium and Germany; towards the north to northern 

 Scandinavia, and in Finland. 



4. Agathomyia Verr. 



Small elongated species of shape and colour about as in Callimyia. 

 The genus is upon the whole very nearly related to, and in almost 

 all respects similar to Callimyia. The third antennal joint is in some 



