678 DIPTERA OF AUSTRALIA, 



scutelluni, and a fe^v long yellowish-brown hairs between the 

 wings and the humeri ; scutelluni black, with a few long 

 hairs on the posterior margin. Halteres pitch-brown, the base 

 of the stalk ochraceous ; club sparsely covered with short 

 hairs. Abdomen ochraceous-brown, the dorsal segments later- 

 ally inclined to fuscous, and the four terminal segments with 

 the lamellce of the ovipositor almost umber brown ; lamellst' 

 almost elliptical. Legs pitch-brown. In the fore-legs the tarsi 

 a little longer than the tibiaj ; in the intermediate legs the 

 tibife and tarsi of about equal length ; in the hind-legs the 

 tibiee }.; longer than the tarsi, and .V longer than the tibiae of 

 the intermediate-legs. Spurs yelloAvish, as long as the la.st joint of 

 the tarsi. First tarsal joint in the two first pairs of legs rather 

 more than twice the length of the second joint, in the hind-legs 

 more than three times the length ; second joint I longer than the 

 third, and about equal in length to the fourth and fifth joints 

 together. Wings pellucid with a pale greyish-brown tint ; bril- 

 liant margaritaceous retiections when viewed at a certain obli- 

 quity. First longitudinal vein joining the costa almost opposite 

 but immediately before the base of the fork of the third longitu- 

 dinal vein ; petiole indistinct, and rather shoi'ter than the anterior 

 branch ; anterior branch twice as arcuated at the base as the 

 posteiior ; both branches scarcely divergent at the tips, fg about 

 1| times the length oi gh ; kl about the .same length as Im. 



Hah. — Glenbrook (Masters). End of November. 



C. Cross-vein situated beyond the middle of the first longi- 

 tudinal vein. 



a. Tip of the second lorigiticdinal vein nearer the apex of the 

 loing than the tip of the i^osterior branch of the forh. 



t Thorax with tioo longit%idinal roios of hairs. 



101. SCIARA .EMULA, Sp.n. (PI. XL, fig. 3). 



c^. — Length of antennee 0*065 inch ... 1*66 mil limetre.s. 



Expanse of wings 0-180 x 0-065 ... 4-56 x 1-66 



Size of body 0-160 x 0-030 ... 4-06 x 0-76 



