400 DIPTERA OF AUSTRALIA, 



oval. Legs black, the coxae and femora sometimes deep brov/n. 

 In the fore-legs the tarsi a little longer than the tibiae ; in the 

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

 legs the tibiae a little looger than the tarsi. Tibial spurs brown. 

 First joint of tarsi in the fore-legs slightly more than twice the 

 length of the second ; in the intermediate-legs 2|, and in the hind- 

 legs about three times its length ; second joint about l longer than 

 the third, and equal to the fourth and fifth combined ; fifth rather 

 longer than the fourth. Wings pellucid, with a pale brownish 

 tint, distinctly darker from immediately below the second longi- 

 tudinal vein to costa ; opaline reflections ; costal and first two 

 longitudinal veins black. First longitudinal vein reaching costa 

 considerably before the base of the fork ; petiole paler than the 

 fork, as long or slightly longer than the anterior branch ; extreme 

 base of the fork as pale as the petiole, branches almost parallel, 

 somewhat divergent towards the tips, f^ from 5 to 6 times the 

 length o{ gh ; kl considei-ably longer than Ini, 



Hah. — North Shore, near Sydney (Helms). Five specimens in 

 August. 



Ohs. — Considerably resembling iS. cemula, Sk., from which it 

 can however be readily distinguished by the venation of the wings. 



454. SciARA INFIXA, sp.n. 



^. — Length of antennae 0065 inch ... 1"66 millimeti'es. 



Expanse of wings 0-155 x 0-050 ... 3-93 x 1-27 



Size of body 0-165x0-025 ... 4-18x0-62 



Antennae dark brown, densely covered with pale yellow 

 pubescence ; slender, almost as long as the head and thorax 

 combined ; joints of scapus with tolerably long hairs ; flagellar 

 joints sub-sessile, rather more than twice as long as broad, the 

 terminal joint longer. Head black, almost opaque. Eyes con- 

 tiguous above. Palpi black. Thorax black, levigate, with a slight 

 grey bloom ; traversed by two very distinct longitudinal rows of 

 rather long black hairs to scutellum ; lateral borders and scutellum 

 with some longer black hairs. Halteres black, the basal portion 



