BY FREDERICK A. A. SKUSE. 791 



dark brown stripe ; pectus and metanotum usually dark brown. 



Halteres pale yellow. Abdomen dark fuscous-brown ; ^ ovipositor 



ochraceous. Coxpe and femora yellowish-brown, sometimes darker ; 



base of coxre, the trochanters, and a broad ring at tip of femora, 



dark brown ; tibije and tarsi greyish-brownish, more or less 



ihfuscated. Wings somewhat tinged ; all the veins slightly clouded 



with greyish ; a more or less distinct cloud at base of pr^efurca, 



sometimes another connecting stigma with discal cell, and less 



frequently a third at inner end of discal cell ; stigma dark fuscous ; 



veins cinereous, the costal and first longitudinal veins yellowish. 



Auxiliary veins reaching costa at a point a little before inner end 



of sub-marginal cell ; sulvcostal cross-vein at its tip, connecting it 



with first longitudinal vein ; pr?efurca angularly bent near its 



origin, sometimes with a small tooth of a vein at the angle ; small 



cross-vein shorter than inner end of second posterior cell ; inner 



end of discal cell considerably larger than outer end, opposite tip 



of sixth longitudinal vein, and forming an angle much less than a 



right angle ; great cross-vein situated a little beyond inner end of 



discal cell. 



Hab. — Knapsack Gully, Blue Mountains ; Clifton ; and Middle 

 Harbour, near Sydney (Skuse). Four specimens. 



Obs. — In one sjjecimen (in one wing only) a supernumerary 

 cross-vein exists in the first basal cell, joining the second longi- 

 tudinal vein near its origin. 



315. Rhamphidia niveitarsis, sp.n. 



9. — Length of antennae 0-04:7 inch ... 1-18 millimetres. 



Expanse of wings, 0-270 x 0-057 ... 6-85x1-44 



Size of body 0-270x0-003 ... 6-85x0-76 



Head greyish-brown ; rostrum a little longer than the head, basal 

 portion ochreous, the tip brown ; palpi brown ; antennae brown, the 

 first joint of scapus usually ochreous. Collare tinged with brown. 

 Thorax ochreous-brown (darker on mesonotum^, somewhat shining; 

 pleurae ochreous, more or less hoary. Halteres infuscated, the 

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