Tabaiiida? of tlie Aiislrallan Uegion. 267 



Abdomen long and narrow. TVinf/a rather large, with the 

 first posterior cell not at all narrowed at border. 



A slender reddish-yellow speeies ; the auteaiise black at 

 apex. Legs black and yellow. Wings clear. 



Length 11 mm. ; proljoscis Ik mm. 



Female. Face Siud forehead raw-sienna in colour ; the «??- 

 iennce situated beyond the middle of the head, nearer the 

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

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

 lare visible just below the antennae. Palpi the same colour 

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

 black pubescence. Beard ahnost 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 subcalkis antl the vertex tlie forehead is concave; 

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

 a6^/cime?i raw-sienna in colour, bare, a few same-coloured hairs 

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

 appendix present, stigma blackish, veins black. Leys rather 

 variable in colour, black, the femora usually yellowish, 

 darker at their apices, all coxte 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. Eijes 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 ; scutellurn 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 [ungiista) they appear almost 

 Mholly reddish yellow. His type rub'iginosa is in very bad 

 condition, and the three male types of angusta are little 

 better. 



Cenoprosopox, gen. nov. 



Formed for two females from Blue ilts., New South 

 Wales, in j\lr. Wainwright's Coll. 



The most striking characteristic in this speeies is the 



lU* 



