704 DIPTERA OP AUSTRALIA, 



oval. Petiole scarcely paler than the fork, shorter than the 

 anterior branch, about the same length as the posterior branch, fg 

 nearly twice the length of gh. 



Hah. — Glenbrook, Blue Mountains (Masters). November. 



122. SCIAKA ATRATULA, Sp.n. 



9. — Length of antenna? 0-020 inch ... 50 millimetre. 



Expanse of wings 0-050 x 0-020 ... 1-27x0-50 



Size of body 045 x O-OlO ... 1.13 x 0-25 



Antennae slender, as long as the head and thorax together, 

 black, with a dense brown pubescence ; joints of the scapus 

 brown, with apparently no pubescence ; flagellar joints sub-sessile, 

 rather longer than broad towards the tip, the terminal joint 

 about twice as long as broad. Head black. Eyes almost 

 contiguous above. Palpi black or deep brown. Tliorax black, 

 levigate, with three very indistinct longitudinal double rows of 

 very short bi-ownish hairs, the intermediate one particularly 

 indistinct, apparently only extending to the middle of the thorax, 

 the lateral ones wider, running almost to the scutellum ; a few 

 long brownish liairs anterior to the origin of the wings; apparently 

 no pube.scence on the scutellum. Halteres black, the base of the 

 stem sordid ochraceous ; club very little thickened ; apparently no 

 pubescence. Abdomen rather wider than the thorax, deep olive- 

 brown, darker between the segments, clothed with a very short 

 dense pubescence ; lamellae of the ovipositor very small, elongate. 

 CoxsB and femora fuliginous-ochraceons. Tibiae and tarsi almost 

 fuliginous. In the fore-legs the tar.si nearly ^ longer than the tibiae; 

 in the intermediate- and hind-legs the tibiae and tarsi of equal 

 length. Spurs very small. First joint of the tarsi twice the 

 length of the second ; second joint about \ longer than the third ; 

 third and fifth joints of equal length, about \ longer than the 

 fourth. Wings pellucid, with an almost fuliginous tint ; cupreous 

 and violaceous reflections. Costal and two tirst longitudinal veins 

 fuliginous. First longitudinal vein reaching the costa considerably 



