BY FREDERICK A. A. SKUSE. 79 ( 



suture in the middle, and one on each side above the origin of the 

 wings ; bordered laterally and in front by a narrow yellow stripe, 

 followed on the pleurae by three longitudinal stripes, brown and 

 yellow alternately ; scutellum yellow, somewhat tinged with brown 

 anteriorly ; metanotum deep brown. Halteres yellow. Abdomen 

 brown, sometimes deep brown ; venter and ovipositor usually pale 

 ochreous-yellow. Legs light umber-brown, the terminal tarsal 

 joints blackish. Wings slightly tinged with brownish-grey or 

 very pale brownish ; veins light umber-brown ; stigma colourless 

 or just perceptibly brownish, elongate, narrow, stretching almost 

 the entire length of the ultimate section of the second longitudinal 

 Auxiliary vein reaching costa considerably beyond origin of second 

 longitudinal, usually a distance equal to about twice the length of 

 great cross-vein ; sub-costal cross- vein a little before the tip of 

 auxiliary vein, sometimes even a distance equal to length of great 

 cross-vein ; pr^efurca equal in length to the continuation of the vein, 

 originating at an acute angle ; discal cell about half the length 

 of second posterior cell ; great cross-vein situated somewhat before 

 its inner end. 



^«6.— Knapsack Gully, Blue Mts., and Sydney, N.S.W. 

 (Masters and Skuse.) Five specimens in September. 



319. Leiponeura brevivena, sp.n. 



9. — Length of antennae 0*037 inch ... 0*90 millimetre. 



Expanse of wings 0*180 x 0-045 ... 4*56 x M3 



Size of body 0-150x0.020 ... 3-81x0-50 



Head, including rostrum, palpi and antennae dark brown or 

 black, the joints of the scapus ochraceous or light ferruginous. 

 Thorax similarly coloured to that of L. gracilis ; the first lateral 

 yellow stripe, however, is much broader in this species, and 

 the following brown one a mere line ; and the yellow spots in 

 front of the scutellum are indistinct. Halteres pale. Abdomen 

 brown, each segment very slightly bordered posteriorly with 



