132 DIPTEPA OF AUSTRALIA, 



Antennae half as long as the body, 2- + 1 6-jointecl ; flagellar 

 joints deep brown or black, rather longer than bread, sessile, A^th a 

 yellowish pubescence ; basal joints pale ferniginous. Head deep 

 brown or Vjlack with a golden pubescence on the vertex. Palpi 

 yellowish-brown, with a yello^Wsh pubescence. Thorax deep 

 reddish-brown, with golden scales and hairs ; humeri, scutelluin, 

 and pleurse ferruginous-ochraceous ; scutellum with golden scales 

 and hairs. Halteres ferruginous on the stalk, the club elongate, 

 almost pyriform, with a golden pubescence. Abdomen ferruginous, 

 the dorsal segments with deep brown scales, posteriorly bordered 

 with golden scales and long hairs ; forceps light umber with a pale 

 pubescence. Legs moderately long, slender. Coxae, femora, and 

 tibipe ferruginous-ochraceous, with golden scales and pubescence. 

 Tarsi covered with deep bi'own or black scales. Wings yellowish- 

 brown at the roots, hyaline, with bright margaritaceous reflections. 

 Costal and two first longitudinal veins yellowish-brown; the costal 

 with deep brown scales and a short pubescence ; third longitudinal 

 vein very pale, but distinctly discernible, gradually arcuating into 

 the posterior border ; anterior branch nearly straight, almost as 

 long as the whole of the posterior vein. (Description drawn from 

 dried specimen). 



Hah. - Gosford (Skuse). February. 



Ohs. — Six specimens taken on the wing in a .shady situation, 

 all pi*oved to be males. 



8.5. Lasioptera helvipes, sp.n. 



$. — Length of antenna 0-017 inch .. 0*42 millimetre. 



Expanse of wings 0-060 x 0-030 ... l-.54x0-76 



Sizeofbody 0.050x0-020 ... 1-27x0-50 



AntemiPe pale bi-ownish, 2--I- 17-jointed, sessile, with greyish 

 pubescence. Head black or dark brown, with a pale pubescence 

 on the vertex. Palpi yellowish. Thorax pale brown, with 

 yellowish scales and hairs, an indistinct longitudinal band of scales 

 down the middle. Halteres pale yellow. Abdomen covered with 



