BY FREDERICK A. A. SKUSE. 391 



Antennae black or sooty-brown, slender, with a short pale 

 pubescence ; as long as head and thorax taken together ; joints of 

 scapus sparsely pubescent ; flagellar joints sub-sessile, about 3 

 times as long as broad, progressively diminishing in thickness. 

 Head black, sub-levigate. Eyes contiguous above. Palpi brown. 

 Thorax black, sub-levigate, with three almost parallel rows of 

 yellow hairs reaching to the scutellum ; pleurae and metanotum 

 black ; scutellum deep reddish-brown, with black hairs. Halteres 

 reddish-brown. Abdomen black or very deep brown, clothed with 

 short brown hairs ; in the middle about as broad as thorax ; 

 lamellae of the ovipositor black, elongate. Legs deep umber-brown, 

 the tarsi black. In the fore- and intermediate-legs the tibiae and 

 tarsi of about equal length ; in the hind-legs the tibiae a little 

 longer than the tarsi. Spurs very short. First joint of the tarsi 

 twice the length of the second ; second a little longer than third, 

 about equal to fourth and fifth combined ; the last two about 

 equal in length. Wings pellucid, with a greyish-brown tint, the 

 costa and first two longitudinal veins deep brown ; margaritaceous 

 reflections. First longitudinal vein reaching the costa exactly 

 opposite the base of the fork ; cross-vein distinct, situated imme- 

 diately before the middle of the first longitudinal ; petiole much 

 paler than the fork, about the length of the posterior branch ; 

 branches parallel ; tip of the anterior one scarcely divergent, fg 

 twice and half the length of gh ; kl somewhat shorter than Im. 



Hah. — Mossman's Bay, near Sydney (Skuse). September. 



Ohs. — Follows S. Macleayi, Sk., in the classification. 



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



vein, 

 a. Tip of the second longitii^dinal vein nearer the apex of the 

 wing than the tip of posterior branch of the fork. 



446. SciARA Tryoni, sp.n. 



^. — Length of antennae 0'120 inch ... 3*04 millimetres. 



Expanse of wings 0-160 x 0-060 ... 4-06 x 1-54 



Size of body 0-130x0030 ... 3-30x0-76 



