610 DIPTERA OP AUSTRALIA, 



Coxse and femora pale yellow, the hind femora infuscated with 

 brownish at the base ; tibiae dark greyish ; tarsi black. Tibial 

 spurs black. In the fore-legs the tibiae I longer than the meta- 

 tarsus. Wings pellucid, almost hyaline ; veins black or deep 

 brown. Auxiliary vein terminating in the costa somewhat beyond 

 the middle of the marginal cell ; the sub-costal cross-vein sitviated 

 mid-way between the tip of the auxiliary vein and the proximal 

 end of marginal cell ; marginal cell twice as long as wide ; petiole 

 equal in length to the anterior branch of the fork ; base of the 

 fork of the fifth longitudinal vein situated a little before the 

 proximal end of first posterior cell. 



Jflab. — Hogan's Brush, Narara Creek, near Gosford, N.S.W. 

 (Skuse). August. 



II. Base of the fork of the fifth longitudinal vein situated 



opposite the proximal end of the first posterior cell, 

 a. In the fore-legs the tibice longer than the metatarsus. 



4,12. SciOPHiLA SYLVicoiiA, sp.n. 



$. — Length of antennae 0*130 inch ... 3'30 millimetres. 



Expanse of wings 0-180 x 0-170 ... 4-56 x 1-77 



Size of body 0-200 x 0-035 ... 5-08 x 0-88 . 



Antennae moderately robust, considerably longer than the head 

 and thorax combined ; joints of scapus and base of first flagellar 

 joint yellow ; remaining flagellar joints dark brown, with a hoary 

 pubescence. Hypostoma, proboscis, and palpi sordid yellowish- 

 brown. Front sordid yellowish, the vertex dark brown. Thorax 

 brown, somewhat shining, with three convergent longitudinal 

 indistinct paler lines, beset with double rows of black hairs ; 

 lateral borders and scutellum setiferous ; pleurae considerably 

 tinged with sordid ochreous-yellow. Halteres yellow, the club 

 brownish. Abdomen black or deep brown, somewhat shining, 

 the first five or six segments more or less distinctly marked at the 

 sides with yellowish-brown or reddish-fulvous ; densely clothed 

 with black hairs. Coxae and femora sordid ochreous ; tibiae 



