BY FKEDERICK A. A. SKUSE. 67 



tarsi deep brown or black on account of their scales and hairs. 

 Wings pellucid, with a very pale brownish tint, very densely 

 haired and ciliated ; bright bluish reflection. Venation pale and 

 not very distinct. First longitudinal vein short, very close to 

 the costa ; second longitudinal vein very little bent posteriorly, 

 reaching the margin immediately before apex of the wing ; cross- 

 vein not distinguishable ; third longitudinal vein turning towards 

 the posterior marsin in an abrupt little rounded angle ; anterior 

 branch almost straight, most indistinct. (Description drawn 

 from dried specimen). 



JIah. — Gosford (Skuse). February. 



Ohs. — At tirst glance specimens of this insect bear a most 

 striking resemblance to Bijjlosis plumbea. 



11. Cecidomyia gibbula, sp.n. 



5. — Length of antennfe 0'03.5 inch ... 0'88 millimetre. 



Expanse of wings 0-090 x 0-040 ... 2-27x1.01 



Size of body 0070 x 0-020 ... 1-77x0-50 



Antennae blackish, 2- + 16-jointed, sessile, cylindrical, verticillate 

 ]»ilose. Hypostoma and front yellowish-bi'own ; palpi grey, the 

 fourth joint one-half longer than the third, second joint thicker 

 than the rest. Thorax black, somewhat gibbose, levigate ; 

 scutellum sordid-yellow ; plcurie sordid-yellow, blackish at the 

 base of the wings. Halteres yellowish, blackish at the base of 

 the knob. Abdomen brownish- red, ovipositor long, yellowish. 

 Coxie yellowish-grey. Femora yellowish-grey, reddish at the tips. 

 Tibiie slightly reddish at the base, remainder of the joints and 

 tarsi blackish, with a greyish reflection. Wings hyaline, with a 

 yellowish [mbeHcence, little reflection. Costal and two Hrst 

 longitudinal veins brownish; cro.ss-vein very indistinct; first 

 longitudinal vein so close to the costa as to be hardly discernible, 

 a little divergent at the tip ; third longitudinal indistinct. (Des- 

 cription drawn from dried specimen). 

 JIab. — Middlir Harbour (Skusc). 



b. Flagellar joints of the antenrKC stalked in the ^ and <^. 



c. Flagellar jointi of the unlenn(c sessile in the ^ and <^. 



