DKSCKIITIONS OK I'MKS HARHY. 195 



Cliarni'ti'rs. — The aiitemia? contain ten segmentH, of vvliicli the first is 

 clearly distinct ; the second joint is askew and somewhat amalgamated 

 with the third; the third to sixth segments form a third and cinnplex 

 joint, all the segments of which ai-e askew, so that the apex (the base of 

 the arista) is situated on wliat is ap[)arently the side. The arista is 

 composed of the seventh to tenth segments, the two basal ones very short, 

 the next much longer, and the apical one very long. The scutellum is 

 without spines. The wings have the cubital vein forked and contain four 

 postical veins. 



Type of the genus. — /). narilineata sp. nov., Queensland. 



DoCUMlOCKkA ATHIMNKATA, Sp. UOV . 



Plate xxxvi., figs. 1 and 2.) 



Denrn'ptiuii. — 9. Black, with antenna', venation, halteres, most of 

 the legs and some tomentum, yellow. 



Head broader than the thorax and black; behind the head a slightly 

 elevated flange borders the upper margin of the eyes. Ocellar tubercle 

 brown or black, and on each side is a shining black callus. These calli, 

 bordering the innei- margin of the eyes, extend nearly the full length of 

 the front, and approach each other towards the antennal tubercle. The 

 area enclosed by the calli is covered with a golden yellow tomentum. 

 Antennal tubercle slightly prominent. Anteunse composed of ten segments 

 and of the form described under the generic characters. Face brown, or 

 brown and black, very short, and contains a little golden tomentum. The 

 cheeks consist of very small strips behind the eyes and are either entirely 

 covered with a silvery tomentum or are brown. 



The thorax is rather long and black, and contains five stripes of 

 golden yellow tomentum which alternate with four stripes of reddish 

 tomentum; there are some slight traces ef golden yellow tomentum 

 ventral ly. The scutellum is also I'ather long, and contains golden yellow 

 tomentum on the sides. 



The abdomen is considerably broader than the thorax, short, and 

 black in colour ; it contains conspicuous traces of golden yellow tomentum. 



The legs have black or yellow coxae ; trochanters, two-thirds of 

 femora, and base of tibiae, are bright brownish yellow ; on the posterior 

 femora, in the holotype, there is a little black between these colours. 

 The tibia? are mostly black or black and brown, with a yellow central 

 area which, however, is almost obsolete on the anterior legs. The anterior 

 tarsi black ; the intermediate or posterior tarsi yellow or white. 



Wings hyaline with yellow veins. Mediastinal vein very faint and 

 inconspicuous. Radial vein branches considerably before the intermediate 

 cross vein. Cubital vein forked. The first and second postical veins 

 are complete and rise independently from the distal cell ; the third is 

 absent ; the fourth branches from the distal cell and is complete. The 

 fifth meets the anal considerably before the wing margin. Anal vein 

 sinuous. 



5- The male is not known. 



Leiiijfli. — 5 mm. 



