682 DIPTERA OF AUSTRALIA, 



before the base of the fork ; cross-vein very distinct ; petiole 

 paler than the fork, longer than the anterior branch ; anterior 

 branch rather more arcuated than the posterior one ; both 

 branches slightly divergent at the tips ; branches of fourth 

 longitudinal vein darker than the last, fg twice the length of 

 gh; kl about equal in length to Im. 



JIah. — Middle Harbour (Froggatt). April, 



104. SciARA FREQUEXS, sp.n. 



$. — Length of antennte 0"060 inch ... I'oi millimetres. 



Expanse of wing.s OllOxO-045 ... 2-79xM3 



Size of body 0100 x 0-015 ... 254 x 0-38 



Antennae black, with a minute brownish-yellow pubescence ; 

 rather slender, more than half the length of the body ; basal 

 joints black, almost without any pubescence ; flagellar joints with 

 very short pedicels, 2 to 4 times as long as broad, the terminal 

 joint considerably longer than the one immediately preceding it. 

 Head black. Eyes almost contiguous above. Palpi light 

 brown. Thorax dull black or deep brown, with three longitudinal 

 and almost parallel rows of very minute golden-yellow single 

 hairs : scutelluui with a short pubescence, the hairs longer than 

 those on the thorax. Halteres light umber-brown, the base of the 

 stalk pale brownish-yellow, with .sparse and minute puV^escence ; 

 club large, pyritorm. Abdomen deep umber-brown, with a very 

 sparse, short, golden-yellow pubescence ; almost cylindrical, rather 

 narrower than the thorax ; forceps very large, rather densely 

 pubescent. Coxae and femora very pale brownish-yellow, the 

 coxae somewhat darker than the femora, the former with a few 

 short yellow hairs on the upper side, and the latter with a minute 

 pale pubescence also only on the upper side. Trochanters light 

 brown, considerably darker than the coxte and femora. Tarsi 

 almost cinereous, but having a yellowish tinge. In the fore-legs 

 the tarsi are about one-third longer than the tibiae, in the inter- 

 mediate-legs the tarsi are somewhat longer tlian the tibite, and ia 



