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Neuration : forevrings, cell more tlian half the length of wing, narrowed towards 

 the extremity ; first median at three-fourths, second at seven-eighths, third from end ; 

 radials as usual ; all five subcostals on a common stem from seven-eighths. Hind- 

 wings, costal approximated to subcostal for quite half the length of cell ; first 

 subcostal and second median from just before end of cell ; first median at three- 

 fourths ; radial from centre of discocellular. 



Tyjie : S. ftvmoaa Warr. 



A genus of small, rather delicate insects, with rather sparse scaling and fine 

 veins. 



Symmetroctena fumosa sp. nov. 



Foreivings : grey, with dark grey suffusion and markings; central fascia broad; 

 its inner edge vertically curved, blackish, at one-fourth, geminated, the intervening 

 space sometimes filled up with blackish ; the outer edge denticulate, from three- 

 fourths of costa, curved outwards below costa, then inwards to inner margin just 

 beyond middle; an outer dark dentate line from costa before apex, approximated 

 to outer edge of central fascia in its lower course; fringe chequered, pale and iliirk 

 grey. 



Hindwinfjs: whitish, with the hiudmargin becoming smoky grey, bcnuud an 

 indistinct subniarginal line. 



Head, thorax, and abdomen concolorous with forewings. Underside dull whitish, 

 speckled and suffused with grey, with the outer line shown by a .series of dots; 

 cell-spots small, dark. 



Expanse of wings : 2G mm. 



Two <? c? from Queensland. 



Zygoctenia gen. nov. 



Forewings: ample; costa straight, slightly convex just before apex; hindmargin 

 curved, somewhat bowed, slightly wavy. 



Hindwings: with hindmargin irregular, wavy, rather squared in the middle. 



Palpi porrect; third joint distinct, drooping; tongue present; hind tibiae 

 thickened, hairy, with two pairs of spurs; antennae of S of peculiar structure, the 

 outer side of the shaft being armed with fascicles of cilia, and the inner with short 

 velvety scales, almost the apical half being filiform. The underside of the hiudwings 

 at the anal angle and along the submedian fold is covered with long hairs. Forewings 

 with distinct fovea. Jseuration normal. 



Type : Zytjoctenia cinerosa Warr. 



Zygoctenia cinerosa sp. nov. 



Forewings: ashy grey, the lines dark fuscous; first near base angulated near costa; 

 second from three-fourths of costa to two-thirds of inner margin, sinuous, denticulated, 

 marked more clearly on the veins; subniarginal line pale, preceded by a fuscous 

 shade ; discal spot round, blackish. 



Hindwings: the same, but with no basal line. 



Head, thorax, and abdomen all cinereous ; scales of the inner side of antennae 

 mottled dark and light. Underside dull cinereons ochreous, darker towards the hind- 

 margin; hairs at the anal anjjle tawny. 



Kxpan.se of wings : CO mm. 



One c? from Adonara, collected bv Dohertv. 



