BY FREDERICK A. A. SKUSE. 175 



of moderate length and thickness ; tibiae without bristles, 

 the intermediate pair with very small spurs ; hind femora 

 slender ; hind tibiae slightly curved (pi. x., fig. 9). Wings rather 

 short and broad ; costal vein without bristles, ending at 

 the tip of the fourth longitudinal; auxiliary vein wanting, 

 its course indistinctly indicated by a pale wing-fold-like 

 line ; first longitudinal vein gradually bent, terminating in 

 the costa at a point rather beyond mid-way between the 

 transverse shoulder vein and the tip of the second longi- 

 tudinal, and opposite the posterior transverse vein; third 

 longitudinal vein originating opposite a point mid-way between 

 the transverse shoulder vein and the tip of the first longitudinal ; 

 hinder transverse vein slanting ; foremost of the two small basal 

 cells united with the discal cell, the posterior one entirely wanting; 

 sixth longitudinal vein stopping immediately before reaching the 

 border * (pi. x., fig. 7). 



Obs. — Judging by the above characters this genus might be 

 considered identical with Oscinis, but the far greater size and 

 peculiar habits of the contained species both give it an un- 

 mistakable distinction, and to my mind justify the retention of 

 Mr. Macleay's generic name. 



Batrachomyia nigritarsis, sp.n. 



(J. — Long 2f ; alar. 2 J lines; 9 long SJ ; alar. 3J. Antennae 

 entirely black. Head ferruginous-ochre ; the pubescence on the 

 front and short bristles on the vertex black. Ocelli on a small 

 deep brown or black triangular patch. Eyes black, with pale 

 yellow pubescence. Thorax ochreous-brown, shining, densely 

 covered with short black hairs ; very indistinct traces of four 

 light brownish bands similarly disposed to those in £. quadri- 

 lineata ; pleurae and pectus bright ochreous or ferruginous- 

 ochreous, the latter with short yellow hairs ; scutellum ochreous 

 or brownish-ochreous with short black hair, fringed at the apex 



* This vein runs so close to the border that the fact of its really not 

 reaching it can only be ascertained by very close examination with the 

 ordinary lens. 



