74 LEPIDOPTERA. 



anal angle, curved off and continued as a narrow stripe along 

 the dorsal margin. Hind wings smoky-white, almost wholly 

 shaded with smoky reddish-brown. 



Antennas of the male rather long, naked, dull brown ; 

 palpi short, very broadly and densely tufted, purple-brown 

 mixed with white ; apical joint short and thick ; head densely 

 tufted with scales, which are divided into three projecting 

 ridges by two deep cross channels below the antennas, each 

 ridge faintly tipped with white, that between the antennas 

 noticeably so ; collar very large, beautifully curved, sweeping 

 back in the middle to a long point or peak, silvery-grey, three 

 times barred with brown in different shades, and edged at 

 the back with black-brown ; shoulder-lappets very large and 

 long, silvery-white shaded with pale brown toward the 

 shoulders and sprinkled with a few dark brown dots ; 

 remainder of the thorax reddish-brown, top crest concealed 

 by the tall collar, back crest rather invaded by the long 

 shoulder-lappets, black-brown tipped faintly with white ; 

 fascicles very long and curving over, brownish- white ; abdo- 

 men long and tapering, dull grey-brown obscured by abun- 

 dant white hair-scales ; on the dorsal ridge are two conspicuous 

 erect black-brown crests, followed by similar but more pros- 

 trate tufts ; lateral tufts dusky -white ; anal tuft long and 

 somewhat forked, greyish-white. Fore wings very long, 

 narrow ; costa thickly ribbed, straight or even a little hol- 

 lowed near the base, strongly arched toward the apex, which 

 is angulated ; hind margin very oblique, nearly straight, 

 faintly crenulated ; dorsal margin almost straight ; colour 

 silvery-grey, but the costal region is completely occupied by 

 a broad shaded purple-brown longitudinal stripe, the dorsal 

 margin by another, much narrower, but suddenly bent up 

 beyond the middle, and cut off by a slender upright white 

 crescent edged with black ; beyond this is a large purple- 

 brown cloud occupying the space over the anal angle, and 

 containing a hooked black line and two or three small white 

 streaks ; sometimes the ordinary first line is suggested by 



