TRIFID^E. 91 



densely tufted, the scales divided by channels into three 

 ridges, dark grey tipped with white ; collar large and peaked, 

 whitish-grey, but with the basal area light brown, edged 

 above by a slender black bar, which is much pointed up in 

 the middle ; above this are three faint brownish-grey trans- 

 verse stripes ; shoulder- lappets greyish-white ; middle of the 

 thorax pale brown, the crests blacker but much obscured 

 by long grey scales ; fascicles white ; abdomen very long, 

 whitish-grey, basal segments covered with long white hair- 

 scales, half hidden by which are two small dusky-brown 

 dorsal crests, followed in some instances by similar cloudy 

 spots along the dorsal ridge; lateral tufts compressed, obscure; 

 anal tuft long and rather loose, faintly divided, greyish-white. 

 Fore wings long, narrow at the base ; costa straight to the 

 middle, thence considerably arched ; apex angulated ; hind 

 margin almost straight, very oblique, and obscurely crenu- 

 lated ; dorsal margin faintly hollowed beyond the middle ; 

 colour whitish-grey much obscured by clouding of darker 

 grey on the costal and dorsal margins and the nervures, 

 and having on the costal half of the wing, from the middle 

 outward, a shade of pale brown ; arising at the middle of 

 the base is a long and thin black streak lying below the 

 median nervure ; it is interrupted at the first line, but then 

 continued to the middle of the wing; first line obscure, 

 grey-white, edged on both sides with grey, disposed in very 

 long angles; second line similar though in much shorter 

 angles, incomplete, visible only near the two margins ; the 

 positions of the two upper stigmata are faintly bi'owner, and 

 their margins seem to be indicated obscurely by black dots, 

 and that of the reniform by a curved black streak ; toward 

 the hinder area of the wing are two longitudinal hair-like 

 black lines, one above the anal angle, the other above the 

 middle, and the extreme hind margin is edged with short 

 black dashes ; cilia pale brownish-grey. Hind wings pearly- 

 white ; nervures dark brown ; hind margin slenderly clouded 

 with the same colour, and the dorsal margin with light 



