BY AUTHLK WHITE. 75 



This species is easily recognised by the parti-colourcd 

 -wings, black moustache, red and black thorax and shining 

 black abdomen. It can only be confused with li. nificor- 

 11 is, Macq. The latter species is net represented 

 ill the British Museum Collection, but, according to Miss 

 Ricardo's description, it is a much smaller species, with 

 the wings basally brown and apically hyaline, instead of 

 vice-versa, the moustache is yellow, the thorax black in- 

 ■stead of black and red, and abdomen black with yellow 

 bands, instead of black with only the extreme tip yellow. 



B. helln is at present only known from a single speci- 

 men taken in Victoria by Mr. French. 



Saropogon, Loew. 



This genus consists of small species, in which the an- 

 terior tibiae possess a terminal cun'cd spine, antennpe with 

 a small terminal style, scutellum wilh marginal bristles, 

 and femora without bristles on the underside. Five Aus- 

 tralian species have so far been described ; an additional 

 species is now added. 



Saropogon dissimulaxs, Sil nnv. 



Face and front pale brown, moustacho white; an- 

 tennae red ; thorax brown, with a broad brown dorsal 

 etripe, edged with light yellow-brown, and bordered an- 

 teriorly with a patch of very dark brown, and with shoul- 

 ders yellowish white; scutellum grey; abdomen black, 

 •with grey hindmargins, which are partially interrupted in 

 the middle ; legs brownish-yellow, the middle and pcsterior 

 I'lmora black above: wings hyaline, the marginal cell 

 closed; fourth posterior cell narrowly, and anal cell very 

 narrowly, open. 



Lfiif/tlt. Male, 11 mm. 



Hah. Orange, N.S.W. 



Mule. Face whitish, with a little brown tomentum ; 

 moustache composed of a single row of stiff white bristles. 

 Front pale brown ; ocellar tubercle with long divergent 

 black bristles. Antennae slightly longer than the head, 

 the first joint a little longer than the second ; the third 

 twice the length of the first two tcgethcr, nearly straight 

 above, but cui'ved below, and terminated by a very small 

 blunt style ; the three joints are red, the style black, and 

 the first and second joints bear white bristles. Thorax 

 mottled with various shades of brown ; the greater part of 

 the dorsum a bright yellow-brown, with a broad dull brown 

 Jiiedian stripe, which is divided centrally by a very fine 



