BY FREDERICK A. A. SKUSE. 303 



posterior branch of the latter ; extremely indistinct trace of third 

 longitudinal fork in $ ; fourth longitudinal fork indistinct at 

 base, anterior branch reaching margin, in ^ immediately above, 

 in 9 at, the apex of the wing, posterior branch joining mid-way 

 between tips of anterior branches of the two forks ; fifth fork 

 somewhat narrow, posterior branch in ^ not quite reaching wing- 

 margin. 



Hab. — Sydney and environs (Skuse). December and January. 



284. Ceratopogon ^ratipennis, sp.n. (PI. xiii., figs. 41 and 42). 



(J. — Length of antennae 0*030 inch ... 0*76 millimetre. 



Expanse of wings 0.045x0.014 ... 1-13 x 0-35 



Size of body 0-040 x 0-017 ... 1-01 x 0-42 



<^. — Length of antennae 0*015 inch ... 0*38 millimetre. 



Expanse of wings 0-040x0-015 ... 1-01x0-38 



Size of body 0-050x0-017 ... 1*27x0-42 



(J and 9- — Black, opaque ; scutellum ochre-yellow. Thorax 

 with yellowish-brown hairs. Halteres brown. Abdomen about 

 J longer than thorax, clothed with yellowish-brown hairs. Legs 

 light brown, the femora or genua sometimes darker. In fore legs 

 tibia twice the length of metatarsus. Wings in ^ longer, in 9 

 shorter than entire body, pellucid with a delicate yellowish tint, 

 brassy reflections, not so densely pubescent in $ ; costal, first two 

 longitudinal veins, middle cross-vein and basal portion of fourth 

 longitudinal pale brownish. Auxiliary vein very pale and indis- 

 tinct ; second longitudinal vein in ^ terminating in costa 

 immediately before base of fifth longitudinal fork, in ^ imme- 

 diately beyond ; the latter vein in both sexes joining imme- 

 diately beyond middle of anterior border ; marginal cell almost, 

 and inner marginal entirely, obliterated by the confluence of 

 the veins ; indistinct traces of third longitudinal fork ; fourth 

 longitudinal fork obliterated at the base, branches indistinct, 



