306 DTTEHAM DIPTEEA. 



XXXIV. 496. 



28 (25). Hind tibiae with only 5-6 bristles ; X.4. not clouded. 



29 (30). Legs all black ; hind femora dusted, matt. 



(oceana, Mcq.) 



30 (29). Legs not all black ; hind femora shining. 



31 (32). The tip third of all femora orange in the male, in the 



female all the femora orange, with a stripe on the 

 upper side ; frons purple-red, with, in the male, a 

 black band above the antennae; base of the wing 

 strongly yellow. {lurida, Schin.) 



32(31). Femora orange with stripes in both sexes; frons in 

 both sexes bright yellow without any band ; wing 

 base not brightly coloured. {cineraria, Mg.) 



33 (1). Arista bare, or nearly so. 



34 (42a). X-veins darker than the other veins and clouded, at 



least X.4. 



35 (38). Third antennal joint black. 



36 (37). Thorax and legs with long soft hairs ; femora without 



bristles; acrostichal bristles irregular, long and 

 fine ; palpi broadly black-brown ; X.4. distinctly 

 clouded. (?nollis, Beck.) 



37 (36). Thorax and legs only sparingly clothed with fine 



hairs; femora with bristles; acrostichal bristles 

 two-rowed, very short and fine ; palpi orange ; X.4, 

 darker than the other veins, but not clouded. 



(2238. decifiiens, Hal.) 



38 (35). Third antennal joint orange or red brown. 



39 (42). Both X-veins distinctly clouded ; scutellum yellowish 



brown to yellowish grey dusted of the same colour 

 as the dorsum. 



40 (41). Legs yellow with a black streak on the fore femora. 



2230. Scatofihaga squalida, Mg. 

 Belburn, 1 $, Bishop Auckland, 1 $ and 4 ?, Stan- 

 hope, 1 $, Harperley, 3 ?, Gibside, 1 ?, April- 

 June, 1900-01. 



41 (40). Base of the fore and mid femora black. 



(2235. arrogans, Hal.) 



