Asilidae of Australia. G3 



white. Antennm blackish, the first two joints with black 

 hairs. Forehead with black hairs. Thorax brownish, with 

 grey tomentum and with black stripes, the median one broad, 

 the Bi le ones shorter; dorsum covered with short black hairs 

 and long black bristles posteriorly, one or two are white. 

 Scutellum 'with two white bristles on its outer border. Abdo- 

 men black, with grey segmentations, those on the second and 

 third segments broadest ; pubi 9 i dorsum black, hairs 



at sides white and black with white, and black bristles; geni- 

 talia black, with black hairs and long black bristles. Legs 

 black, the fore femora with long white pub sconce and bristly 

 white hairs, the middle and hind pair with shorter white 

 pubescence and bristles ; fore tibiae with two long black bristL s 

 on outer side and other black and white shorter bristles; 

 pubescence white, rufous on the inside, middle and hind pair 

 with white and black bristles; tarsi with black bristles only. 

 ~\Yings clear, small vein beyond the middle of discal cell. 



Female is identical, but t\\c fore and middle tibipe are 

 obscurely reddish, and the white bristles of the moustache are 

 rather more numerous; ovipositor nearly as long as the last 

 two segments toeel her. 



Cerdistus sydneyensisj Schiner, ' Novara ' Reise, Dipt. p. 187 

 (186S). 



One male and oik; female from Sydney, in Mr. Gibbons's 

 Coll. 



One male from Hornsby, in Mr. Gibbons's Coll. 



This is a small species distinguished by the reddish-yellow 

 bases of tibiae and femora; the bristles on the legs are largely 

 white, most numerous on the underside of the hind femora ; 

 the two bristles on margin of scutellum are black, the bristles 

 on .-ides of abdomen black. 



The type was described as from Sydney. 



Cerdistus maricus, Walker, Insecta Saunders, Dipt. i. p. HI 

 (1851) ; id. List Dipt. Brit. Mus. vii., Suppl. 3, p. 735 

 (1855); Ricardo, Ann. & Mag. Nat. Hist. (8)xi. p. 436 

 (1913). 



In my description of the above the two weak yellow long 

 bristles on scutellum are present on the specimen from 

 Queensland (a female) : in the type (a male) they are black. 

 Another female in Mr. Gibbons's Coll. from Sydney has them 

 yellow. 



