180 AUSTRALIAN CULWIB.^, \\., 



lobes with narrow-curved ones, border-bristles black; prothoracie 

 lobes prominent, clothed with white spindle-shaped scales; pleurae 

 brown, clothed with patches of white, flat scales. 



Abdomen black, with white basal bands on segments two to five ; 

 venter denuded. 



Legs black, fore- and mid-femora mottled beneath, hind- with 

 the basal half white-scaled, the rest mottled ; first and second tarsi 

 of fore- and mid-legs with narrow, white, basal banding, the rest 

 unhanded; first four tarsals of the hind-legs with broad, white, 

 basal banding, fifth unhanded; ungues of fore-legs unequal, the 

 larger with two teeth, the smaller with a single tooth, mid-ungues 

 unequal, each with a single tooth, hind- equal and uniserrate. 

 There is a thin and fairly long appendage, hairy at its apex, with 

 its origin at the base of the fourth tarsus of the mid-leg, extending 

 to the apex of the fifth. 



Wings with the veins clothed with black scales; first fork-cell 

 longer, and about the same width as the second, stem of the former 

 about three-fourths of its cell, stem of the latter longer than the 

 cell, base of the first fork-cell nearer the base of the wing ; anterior 

 basal cross-vein longer than, and about one-half its length from 

 the anterior cross-vein, fringe dusky, halteres with pale stems and 

 black knobs. 



9. Similar to ^. Palpi black, with a few black bristles, second 

 and third joints with white apical spots, apex white; antennae 

 black, ungues all equal and uniserrate. 



Wings more heavily scaled than in the ^; anterior basal cross- 

 vein about its own length distant from the anterior cross-vein, 

 stem of the first fork-cell about one-third, of the second about two- 

 thirds the length of the cells. 



Length, 5*5 mm. (J; 6 mm. 9. 



Hah. — Milson Island, N.S.Wales. 



I am indebted to Dr. E. W. Ferguson for one male and three 

 females of the above species. It is readily separated from its con- 

 geners, owing to the thoracic clothing and the male ungues. The 

 appendage on the tarsus of the mid-legs is very curious. 



