Tabanidse of the Australian Region. 267 



Abdomen long and narrow. Wings rather large, with the 

 first posterior cell not at all narrowed at border. 



A slender reddish-yellow species ; the antennae black at 

 apex. Legs black and yellow. Wings clear. 



Length 11 mm. ; proboscis 1| mm. 



Female. Face and forehea d raw-sienna in colour; the an- 

 tenna situated beyond the middle of the head, nearer the 

 mouth ; the face is short, convex, separated by a deep furrow 

 from the small cheeks, quite bare ; a few very short hairs 

 are visible just below the antennae. Palpi the same colour 

 as lace, but becoming darker towards the apex, with short 

 black pubescence. Beard almost nil, represented by a few 

 short reddish hairs. Antenna same colour as face, the first 

 two joints with some black hairs, the first joint short, the 

 second only half its length, the third with the last four 

 divisions deep black ; the basal division is almost square, 

 nearly as long as the second joint, the next three divisions 

 small, the last four rather larger. Forehead wide, with no 

 callus, wider anteriorly, about half as long as the length ; 

 between the subcallus and the vertex the forehead is concave; 

 ocelli distinct. Eyes quite bare. Thorax, scutelium, and 

 abdomen raw-sienna in colour, bare, a few same-coloured hairs 

 on abdomen. Halteres black. Wings rather large, clear ; 

 appendix present, stigma blackish, veins black. Legs rather 

 variable in colour, black, the femora usually yellowish, 

 darker at their apices, all coxae yellowish. 



Bigot's type [angusta) has the legs entirely yellow, the 

 tarsi a little darker. Wiedemann describes the legs as all 

 black. 



Male very similar, more hairy. Palpi almost the same in 

 shape, with longer and more numerous black hairs ; face 

 also covered with brown hairs. Eyes with larger facets 

 covering most of their surface, only leaving the lower third 

 with small ones. Thorax rather darker in colour, with 

 brown long pubescence; scutelium with yellowish hairs. 

 Abdomen with long yellowish hairs at sides, somewhat darker 

 at the apex. Legs with the femora yellowish or often largely 

 black. In Bigot's types {angusta) they appear almost 

 wholly reddish yellow. His type rubiginosa is in very bad 

 condition, and the three male types of angusta are little 

 better. 



C.enoprosopon, gen. nov. 



Formed for two females from Blue Mts., New South 

 Wales, in Mr. Wainwright's Coll. 



The most striking characteristic in this species is the 



1 ( J* 



