408 DIPTERA OP AUSTRALIA, 



c. Tip of the posterior branch of the fork nearer the apex of 

 the wing than the tip of the second longitudinal vein. 



132. SCIARA SPECTABILIS, Sk. 



S. spectabilis, Sk., I.e., p. 716. 



Several specimens from Dunoon, Richmond River, N.S.W. 

 (Helms), in March and April. Very common about Sydney 

 during March. I have also taken a single example in the month 

 of December. 



B. Halteres yellow or whitish. 



1. Palpi black or brown. 

 B. Cross-vein situated at the middle of the first longitudinal vein, 

 c. Tip of the posterior branch of the fork nearer the apex of tlie 

 wing than the tip of the second longitudinal vein. 



460. SciARA Helmsi, sp.n. 



$. — Length of antennse 035 inch ... 0-88 millimetre. 



Expanse of wings 0-090 x 0-035 ... 2-27x0-88 



Size of body 0-075x0-013 ... 1-89x0-32 



Antennae black, densely covered with a pale puljescence ; 

 slender, somewhat longer than the head and thorax combined ; 

 flagellar joints sub-sessile, twice as long as wide. Head black or 

 deep brown, sub-opaque. Eyes contiguous above. Palpi brown. 

 Thorax black, sub-levigate, with a greyish bloom, traversed by 

 three longitudinal double rows of short yellow hairs ; lateral 

 borders and scutellum with some moderately long black hairs. 

 Halteres pale yellow. Abdomen black or deep brown, wider than 

 the thorax ; clothed with short yellowish or brownish hairs ; 

 lamellae of the ovipositor small, elliptical. Legs brown, the coxae 

 and terminal joints of tarsi black. In the fore-legs the tarsi 

 scarcely longer than the tibise ; in the intermediate-legs the tibise 

 and tarsi of equal length ; in the hind-legs the tibiae about g longer 

 than the tarsi. Tibial spurs yellow. First joint of the tarsi 

 rather more than twice the length of the second ; second joint 



