686 DIPTERA OF AUSTRALIA, 



broad, the terminal joint considerably longer than the one imme- 

 diately preceding it. Head Vjlack, sub-nitidous. Eyes non- 

 contiguous above but very close. Palpi brown. Thorax black, 

 very nitidous, with two longitudinal rows of minute hairs, slightly 

 convergent, and not extending as far as the scutellum, also 

 some long hairs between the humeri and the base of the wings ; 

 scutellum deep brown, sub-nitidous, with two or three long hairs. 

 Halteres pitch-brown, the base of the stem ochraceous. Abdomen 

 black, with a shoi-t moderately dense pubescence, slender ; forceps 

 considerably broader than abdomen, densely pubescent. Legs 

 pitch-brown. In the fore-legs the tarsi rather more than -]- 

 longer than the tibiae ; in the intermediate-legs the tarsi almost 

 g longer than the tibiae ; and in the hind-legs the tarsi 5 longer 

 than the tibiie. Spurs yellowish, as long as the last tansal joint. 

 Firet joint of the tarsi twice the length of the second ; second | 

 longer than the third joint, and rather longer than the fourth and 

 fifth together ; fourth somewhat longer than the fifth. Wings 

 ]>ellucicl, with a very pale somewhat reddish-brown tint and 

 brilliant opaline reflections; veins pale reddish brown. First 

 longitudinal vein reaching the costa considerably before the base 

 of the fork : petiole very little paler than the fork, and almost as 

 long as the anterior branch ; posterior branch veiy little arcuated 

 at the base, and both slightly divergent at the tips, fij more than 

 4 times the length of gh ; kl rather longer than Ini. 



9. — Antennie half the length of the body, joints 2i to 3 times 

 as long as broad. Abdomen robust ; lamellaj of the ovipositor 

 brown, short, almost elliptical. Legs much darker than in the $. 

 In the fore- and intermediate-legs the tarsi not quite | longer 

 than the tibite ; in the hind-legs the tarsi a little longer than 

 the tibiae. 



Hob. — Elizabeth Bay (Masters and 8kuse) ; Glenbrook, Blue 

 Mountains (Masters). November. 



Ohi. — It is remarkable that we should have taken this species 

 only in the two above-named and widely separate localities, 

 where it occurs very abundantly. 



