204 THE DIPTEUA-BRACHYCERA OF TASMANIA, 



separated. Antenna? short, about one quarter the length 

 cf head ; the first and second joints rounded and of about 

 equal length, the third bulb-shaped, about as long as the 

 two first joints toigether, and without a style. Thorax 

 narrow, not at all arched, with a little short pubescence, 

 but without any evident bristles. Abdomen bare, long, 

 narrow, and cylindrical. Legs short, slender, and quite 

 bare, even the tibiae being without bristles. AVing,s of 

 medium length, but narrow, the alula wanting, and the 

 hind-angle quite sloped away ; median cross-vein upright, 

 situated a little beyond the middle of the discal cell ; 

 radial vein strongly looped and slightly recurrent; the four 

 posterior cells and the anal cell all wide open ; number of 

 submarginal cells two ; halteres long-stalked. 



This genus is proposed for two undescribed species, one 

 of which occurs both in Victoria and Tasmania, whilst the 

 other seems to be confined to Victoria. The Tasmanian 

 species is a slender, delicate fly, and bears more resemblance 

 to a Syrphid than to one of the Bowhylidce. 



DociDO?,iYiA PUELLARis, Sp. nov. (Fig. 37). 



Face, front, and thorax black ; abdomen black, the in- 

 cisions of segments usually white; legs black, with the 

 knees light brown ; wings hyaline. 



Length. 7 mm. 



Hab. Bagdad. (Also in Victoria.) 



Face, front, and antennae black. Thorax black, with soft 

 white lateral pubescence; both thorax and scutellum with- 

 out bristles. Abdomen black, the hindmargins of segments 

 usually narrowl^' white; first segment with white pube- 

 scence at sides. Legs black, v.ith the knees light brown. 

 Wings hyaline. 



This species may be easily recognised by its slight, 

 slender shape, absence of bristles, black colouration, and 

 clear wings. The undescribed Victorian species, referred 

 to previously, which may possibly be found to occur also in 

 Tasmania, has the wings light brown, and the cubital fork 

 possesses a long recurrent veinlet. 



D. piiellarin seems to be generally scarce ; the only two 

 specimens that I have met with occurred on November 7 

 and January 19 respectively. 



Subfamily Anthracinse. 



This subfamily may be recognised by the venation, the 

 bifurcation of the radial and cubital veins taking place at 

 a right-angle, almost opposite the median cross-vein. The 



