BY FRANK H. TAYLOR. 757 



third reddish-brow 11, with minute, grey pubescence, base broad 

 and liat, no tooth present, w ith a very shallow angle, annuli 

 darker; inner margins of eyes parallel. 



Thorax black, denuded, with tiuces of grey pubescence, scu- 

 telluni similar to thorax; pleune covered with grey tomentum 

 and white hairs. 



Abdomen black, covered with black hairs, all the segments 

 with fairly broad, greyish-white, apical bands, and fairly broad, 

 grey, lateral patches; venter covered with grey tomentum, with 

 mixed grey and black hairs. 



Leys black, pubescence black, with a yellow knee-spot on the 

 mid-legs. 



Winys grey, costa black, veins dark brown, stigma black, 

 elongate, conspicuous; anterior branch of the third long vein 

 with a short appendix. 



//rti._N. Territory: Brock's Creek (G. F. Hill). 



A medium-sized, compact species, not closely related to any 

 other species of Ricardo's Group ix. The tricoloured antenna?, 

 and the yellow knee-joint on the mid-legs are very distincti^•e. 

 Type unique. 



Tabanus australis, n.sp. 



5. Lengtli, 10; wudth of head, 3-75; width of front at vertex, 

 0"5; length of wing, 9-5 mm. 



Head: front creamy-yellow, subcallus similar; rest of head 

 covered with grey tomentum, beard white; frontal callus chest- 

 nut, darker toward apex, oblong, with a lineal extension tapering 

 to a fine point; antenna? reddish-yellow, first two segments paler, 

 with black pubescence; third segment with the base broad, and 

 forming an obtuse angle on the dorsal surface, with black pubes- 

 cence on the apex of the angle, annuli black; palpi creamy, with 

 pale hairs on the base, black elsewhere, about one-half the length 

 of the proboscis; eyes black, nude, inner margins parallel. 



Thorax ash coloured, with scattered, short, black, appressed 

 hairs, lateral black and grey hairs fairly long, scutellum similar 

 to thorax; pleura- grey, with scattered, grey hairs. 



