BY FREDERICK A. A. SKUSE. 405 



scapus yellow (light reddish-brown in one specimen), sparingly 

 pubescent ; flagellar joints sub-sessile, 2 to 3 times as long as 

 wide ; the terminal joint slender, about twice the length of the 

 penultimate one. Head black, sub-opaque. Palpi yellow. Thorax 

 usually ochreous-yellow, somewhat shining, with three broad 

 brown stripes ; intermediate stripe short, disappearing before the 

 pronotum ; lateral ones starting before the humeri, extending to 

 the scutellum ; lateral border's and scutellum with long black or 

 brown hairs ; pleurse brown or ochreous-brown ; scutellum and 

 metanotum varying from yellow to deep blackish-brown. Halteres 

 deep brown or black, the basal half of stem yellow. Abdomen 

 deep brown or blackish, the incisions paler ; venter ochreous or 

 ochreous-brown, clothed with short black or brown hairs ; lamellae 

 of the ovipositor deep brown or black, short and rounded. Coxse 

 and femora yellow or brownish-yellow, with blackish hairs. 

 Tibiae and tarsi cinereous, the terminal joints of latter black (in 

 one specimen the tarsi entirely black). In the fore-legs the tarsi 

 nearly I longer than the tibia3 ; in the intermediate-legs the tarsi 

 a little longer than the tibiae ; in the hind-legs the tibiae slightly 

 longer than the tarsi. Spurs yellow. First joint of the tarsi in 

 the fore-legs 2|, in the intermediate-legs 3, and in the hind-legs 

 nearly 4 times the length of the second ; second joint about ^- 

 longer than the third, and longer than the fourth and fifth com- 

 bined ; the latter two of equal length. Wings hyaline, brilliantly 

 iridescent ; all the veins (except petiole) distinct, deep brown or 

 blackish. First longitudinal vein reaching the costa a short 

 distance before the base of the fork ; cross- vein distinct, situated 

 at the middle of the first longitudinal vein ; petiole extremely 

 indistinct, except close to the fork, longer than the posterior 

 branch and almost as long as the anterior ; branches almost 

 equally arcuated at the base, directed downwards for the anterior 

 half, slightly divergent at the tips, fg not ^ longer than gh ; kl 

 shorter than Im. 



Hah. — Sydney, and Narara, Hogan's Brush, near Gosford, 

 N.S.W. (Skuse) ; Dunoon, Richmond River, N.S.W. (Helms). 

 Three specimens. 

 27 



