_j 



104 DIPTERA OF AUSTRALIA, 



dorsal segments darker, inclining to umber ; clothed with a pale 

 )3ubescence. Legs long, slender, densely pubescent, almost 

 cinei'eous ; coxge and femora somewhat ochraceous. Wings densely 

 haired, pellucid, with the faintest bluish tint ; brassy reflection. 

 Veins yellowish. Cross- vein very oblique, distinct ; third longitu- 

 dinal indistinct, anterior branch barely distinguishable. (Descrip- 

 tion drawn from dried specimen). 



Hah. — Wheeny Creek, Hawkesbury district (Skuse). January. 



Ohs. — Closely allied to the preceding. 



55. DiPLOsis NEGOTiosA, sp.n. 



J". — Length of antennae O'lOO inch ... 2 '5 4 millimetres. 



Expanse of wings 0-090 x 0-035 ... 2-27 x 0-88 



Size of body 0-070 x O'OIO ... 1-77 x 0-25 



5. — Length of antennae 0-035 inch ... 0-88 millimHre. 



Expanse of wings O'llOx 0-040 ... 2-79x1-01 



Size of body 0-060x0-020 ... 1-54x0-50 



Antennae in the ^ longer than the wings, pale brown ; joints 

 sub-globose, alternate joints rather larger ; the characteristic long 

 hairs shoi'ter in the larger joints ; becoming considerably smaller 

 towards the tip of the flagellum ; pedicels rather longer than the 

 joints ; 9 darker brown ; cylindrical, sub-vSessile j terminal joint 

 with a shoi't narrow projection ; verticillate-pilose. Hypostoma 

 and front pale brown. Palpi slender, very pale brown. Thorax 

 in the ^ pale brown, pale pubescence ; coUare and humeri ochra- 

 ceous ; pleurae ochraceous ; scutellum pale brown : ^ deep brown, 

 pale pubescence ; col lare and humeri pale reddish-brown; pleurae 

 pale reddish-brown; scutellum pale brown. Halteres pale reddish- 

 brown at the base, the stalk and club with a blackish pubescence, 

 the latter distinctly pyriform. Abdomen in the ^ umber-brown 

 on the dorsal segments, pale brown underneath and towards the 

 extremity of the body, densely pubescent, particularly about the 

 forceps, the latter large, pale brown : 9 deep umber-browa supe- 

 riorly, pale brown underneath, pale pubescence ; lamellae small, 



