New Australian Tabanidae. 15 



Four specimens under examination. ^The species is somewhat 

 variable in the coloration of the abdomen, in one specimen the 

 .{segmentations are broader and more reddish, while in another 

 the third and fourth segments are almost wholly reddish, while 

 the black on the second is reduced to a large median spot ; the 

 wings in these two are also more heavily shaded with brown, 

 and the palpi more dusky. As in other respects these agree with 

 .the type, I cannot separate them specifically. 



The species should be readily recognised by the frontal struc- 

 ture; the hairy eyes will also distinguish from most described 

 Australian species of Sifoius. 



The type has been kindly presented to the Australian Museum, 

 .Sydney, by Mr. G. H. Hardy. 



SlLVIUS NIGROAPICALIS, 11. Sp. 



A dark winged species allied to 5\ nigripcunis, Ric., but with 

 basal two-thirds of abdomen bright yellow. 



cT Long: — 12 mm., width across head 4 mm., wing 10.-5 mm. 



Face clothed with bright golden yellow tomentum and similar 

 •coloured pubescence ; beard golden yellow ; palpi black clothed 

 with short black hairs, first joint short and narrow, second joint 

 rather stout, broader than first and about three times as long; 

 antennae black, first two joints with black hairs, third joint broad 

 .and angulate above at base, annuli indistinctly divided. Sub- 

 callus not protuberent, densely clothed with golden yellow tomen- 

 tum. Eyes contiguous, bare, facets equal ; ocelli present. 



Thorax black, clothed with dense black pubescence ; shoulders 

 .and pleurae clothed with dense tufts of long golden yellow hairs; 

 .scutellum black with black pubescence. 



Abdomen with first three segments golden yellow, with rather 

 •scanty golden pubescence along the posterior margins, remaining 

 segments black with black pubescence; venter with same alterna- 

 tion of colour, golden pubescence on basal segments rather more 

 dense. Legs black. Wings tinged dark sooty grey, almost 

 black, slightly paler in centre of cells and at extreme tip; no 

 appendix present. 



Hab. : — North Queensland, Claudie R. (J.. A. Kershaw, 

 16/1/14). 



The species, of which I have two males before me, is allied 

 to S. nigripennis, Ric, from the same locality. The differences 

 in the clothing of head and thorax and in the coloration of the 

 abdomen are too great for me to consider that it is the male of 



