100 DIPTEHA OF AUSTRALIA, 



longer than broad, with very short pedicels, verticillate-pilose ; 

 terminal joint with a small projection. Vertex with golden hairs. 

 Hypostoma and front pale yellowish. Pal})i very slender, yellowish. 

 Thorax ochraceous-brown, rather paler in the <^, with two rows of 

 long golden haii's ; pleursB pale ochraceous-brown. Hal teres 

 yellow, the club large, elongate. Abdomen pale ochraceous, 

 banded with cinereous ; dense golden pubescence ; ^ forceps and 

 2 ovipositor yellow. Legs moderately long and slender. Coxae 

 pale ochraceous. Femora pale ochraceous, with a short golden 

 pubescence, and cinereous on the upper side, the latter more distinct 

 in the ^. Remaing joints cinereous, with pale ochraceous reflec- 

 tions. Articulations golden. Wings considerably more rounded 

 in the ^ than the 5, pellucid, very densely haired and ciliated 

 with golden-yellow hairs ; reflecting violaceous markings when 

 viewed at a certain obliquity. These spots are very distinct in the 

 5 but faint and ill-defined in the ^, and corresjjond with those on 

 the wing of J), dibapha, except that the nebulose marking on the 

 apical portion is rather more detached, and the spot immediately 

 below the second longitudinal vein is very indistinct in this 

 species. Second longitudinal vein very little arcuated, reaching 

 the border just beyond the apex of the wing ; cross-vein most 

 indistinct ; third longitudinal vein turning abruptly towards the 

 posterior border ; anterior branch considerably arcuated, indistinct. 

 (Description drawn from dried specimens). 



Hab. — Elizabeth Bay (Masters and Skuse). End of December. 



51 DiPLOsis CERTA, sp.n. 



9- — Length of antennse 0-025 inch ... 0-62 millimetre. 



Expanse of wings 0-070 x 0-030 ... 1-77x0-76 



Size of body 0-050x0-010 ... 1-27x0-25 



Antennae Ijrown, joints sub-cylindrical, sessile, verticillate-pilose. 

 Hypostoma and front pale ochraceous. Palpi very slender, pale 

 ochraceous. Thorax ferruginous-brown, nitidous, with two longi- 

 tudinal rows of yellowish hairs ; humeri and posterior corners 



