154 THE DIPTERA-BRACHYCERA OF TASMANIA, 



black longitudinal stripe, extending from the base to the 

 aipex, on each side ; wings of medium length and always 

 clear. 



Length. Female, 10 mm. 



Length of wing. Female, 7 mm. 



Female. Face, front, and antennae black. Moustache 

 white, scanty. Back of head, thorax, and abdomen black, 

 without any sign of lighter colouration. Legs with femora 

 and tibice fawn-coloured, the posterior femora with a 

 black longitudinal stripe on each side, extending from the 

 base to the apex, that on the outer side being the broader. 

 (In L. genicidata the dark marking on the hind femora 

 consists of a circular band or ring.) Posterior tibiae not 

 conspicuously paler at the base; tarsi with first joint 

 white, remaining joints brown, with apices of all joints 

 black. Wings of medium length, always perfectly clear ; 

 halteres dull brown. 



This species may be recognised without much difficulty 

 by its uniform black colouration. It is an insect of the 

 late summer and autumn, and probably does not appear 

 on the wing until the other species of LeiAog cutter are 

 over. I have only met with it in the bush at Bagdad, 

 where it frequents low vegetation. My dates range from 

 February 13 to March 2.'' 



Subfamily Dasypogoninae. 



This subfamily is numerously represented on the main- 

 land of Australia, but in Tasmania only five genera are 

 known to occur. In all these genera the marginal cell 

 of the wings is completely open. 



Tahle of fhe Ta><m(inian Genera of Da^ypogonina;. 



1 Abdomen constricted at the base; antennae with 



no very distinct terminal style. 2 



Abdomen not constricted at the base ; antennae 

 with a distinct terminal style. 4 



2. Small humpbacked species with bright red thorax. 



C A B A s A, Macq. 

 Larger species, not humpbacked, and thorax not red 3 



3. Antennae about the same length as head, the third 



joint hardly broadened. 



B R A C H Y R E H O P A L A, Macq. 



Antennae four timesi the length of head, the third 

 joint conspicuously broadened. 



E R Y T H R O P O G O N, WllitO^ 



