BY FREDERICK A. A. SKUSE. 231 



vein somewhat indistinct, reaching costa nearly opposite tip of 

 anterior branch of fifth longitudinal fork ) fourth longitudinal 

 almost reaching the wing-margin, its tip situated at a point J the 

 distance from tip of costa to that of anterior branch of fifth 

 longitudinal fork ; posterior branch of latter |- length of anterior. 



Hah. — King George's Sound, West Australia (Masters). One 

 specimen. 



220. Chironomus Nepeanensis, sp.n. 



(J. — Length of antennae 0-075 inch ... 1-89 millimetres. 



Expanse of wings 0-180 x 0-037 ... 4-56x0-92 



Sizeof body 0-300x0-037 ... 7-62xO-92 



Antennge dark brown, with light bronzy-brown plumes ; first 

 joint of scapus dark brown, somewhat pruinose. Head, clypeus, 

 and palpi brown^ with brown hairs. Thorax pale greenish-yellow 

 with three bands ; anterior band fulvous, bordered laterally, 

 except for its anterior third, with a dark brown line, base united 

 to scutellumby a fine brown line, lateral bands fulvous posteriorly, 

 dark brown anteriorly, united at apex to anterior extremity of 

 dark brown border of middle band by dark brown line ; bands 

 and lines with a hoary appearance when viewed in a certain light ; 

 a median longitudinal row of short pale yellow hairs in the 

 anterior band, and another of longer hairs along inside margin of 

 lateral bands ; pleurae and scutellum pale greenish-yellow, the 

 latter fringed with yellow hairs ; pectus brownish, hoary ; meta- 

 notum deep brown, almost black, dark fulvous at each side. 

 Halteres pale yellow. Abdomen about three times length of 

 thorax, greenish-yellow, tinged with brownish, second to fourth 

 segments bordered anteriorly with a moderately broad ring of deep 

 brown, with the last two segments entirely deep brown ; all 

 segments with a light reflection on posterior margin ; densely 

 clothed with long pale yellow hairs ; anal joint and forceps dark 

 brown, densely haired. Legs yellowish or pale ochreous, the 

 femora, tibice, and all tarsal joints slightly tipped with brown, 



