156 LEPIDOPTERA. 



line from the base to the hind margin, partially edged with 

 black. Hind wings pure white. 



Antennas of the male rather thick, pale brown, ciliation 

 hardly perceptible even under a good lens ; palpi strongly 

 tufted beneath, but covered above with closely appressed 

 scales, yellow-brown, apical joint conspicuous ; the erect 

 hairs covering the eyes red-brown and rather distinct; 

 head yellow-drab, the face very smooth, but above it is a 

 dense ridge of scales projecting over the bases of the 

 antennas ; thorax soft pale yellow-drab, without markings ; 

 fascicles white ; abdomen yellow-drab, the basal segments 

 thickly covered with long white hair-scales ; lateral tufts 

 yellowish-white ; anal tuft tinged with fulvous. Fore wings 

 rather pointed, narrow at the base ; costa nearly straight 

 almost to the tip, where it is curved a little ; apex angu- 

 lated ; hind margin rather oblique and very smoothly 

 rounded ; dorsal margin nearly straight and towards the 

 base a little rolled up ; colour pale soft fawn or 3'ellow- 

 drab, very smooth and even ; median nervure conspicuously 

 white from close to the base to the point of division, and 

 having its principal branch so continued to the hind margin ; 

 this white line is edged on both sides from the base of the 

 wing to the middle with slender black-brown lines narrowly 

 shaded off, the remaining portion being also edged with 

 narrow brown clouding, more especially on the upper side ; 

 often another branch of the median is partially white, or 

 there are white lines on other nervures toward the hind 

 margin, but these are unreliable ; there is not the slightest 

 indication of transverse lines or other ordinary markings ; 

 cilia soft pale yellow-drab, faintly clouded with brown. Hind 

 wings pure clear white ; cilia similar. Female hardly differ- 

 ing in any respect, except that the body is stouter and the 

 anal tuft small. 



Underside of the fore wings white with a yellow tinge 

 on the costa and all the nervures : cilia clouded in broad 

 dashes with pale purplish-brown. Hind wings white, with 



