BY FRANK H. TAYLOR. 519 



with a median black spot on the anterior margin, densely clothed 

 with golden pubescence; shoulders with a dense tuft of golden 

 hairs, wing-roots with mixed black and grey hairs beneath, and 

 grey ones above; scutellum shining black, with golden pubes- 

 cence laterally; pleur?e black, with grey pubescence. 



Abdomen pale yellowish-brown, first three segments with 

 median, black, almost square, plugs, that on the second tapering 

 to a blunt point, the third not reaching the posterior margin, 

 lateral, basal, black spots on the first four segments; pubescence 

 orange-coloured, dense, apex with a few black hairs; venter 

 black, segmentations and lateral borders with greyish-white 

 hairs. 



Legs : coxae black, femora of fore- and midlegs reddish-brown, 

 fore-femora with a black streak above on the basal half, hind 

 black above, reddish-brown beneath, tibiae and tarsi reddish- 

 brown, the latter darker, pubescence pale. 



Wi7igs orange-coloured, veins orange-yellow, except the apical 

 half of the radial, anterior branch of the cubital, and the first 

 and third posterior veins, which are brown, and faintly clouded, 

 apical cell and portion of the apex of the cubital dark dusky- 

 brown; stigma orange-yellow. 



Hab.—Q.: Brisbane (H. Hacker; Sept., 1914). 



Type in Queensland Museum. 



SiLVIUS STRADBROKEI, sp.n. 



Length, 13; width of head, 4; length of wing, 10 mm. 



An elongate species. Abdomen light mummy-brown. Legs 

 pale; antennae reddish. 



9. Head: face cinnamon-rufous, cheeks black, with grey 

 tomentum and black pubescence ; front parallel, cinnamon- 

 rufous, with dark tomentum and pale pubescence; beard grey, 

 scanty; frontal callus yellowish-red, wedge-shaped, tapering to a 

 fine point, basal half with a deep median groove, base about one- 

 third the width of front; subcallus shining yellowish-red; palpi 

 yellow, nearly the length of proboscis, pubescence black, dense; 

 antennae with first two joints pale yellowish-red, with golden 

 tomentum, pubescence black, scanty, short except at the apex 



