TRIFID^. 357 



indicated by the waved edge of a series of liind-margiual 

 chocolate clouds, those in the middle showing faint indica- 

 tions of a drab W, above and below which are also pale 

 chocolate streaks on the nervures and several leaden streaks 

 between them ; in the middle of the wing is a brown cloud 

 near the costa, and nearer the dorsal margin a sharp dark- 

 brown streak; costa obliquely spotted with rusty-brown; 

 cilia pale brown, scalloped and edged with chocolate. Hind 

 wings brownish-white with browner nervures and a broad cloud 

 of brown atoms near the hind margin, along which are three 

 or four brown spots ; cilia yellowish-white. Female decidedly 

 stouter, otherwise similar. 



Underside of the fore wings whitish-drab dusted with light 

 brown, the dorsal region pearly white, the nervures in the 

 hinder portions swollen as on the upper side ; along the 

 extreme margin is a row of black-brown wedges. Hind 

 wings yellowish-white faintly dusted with pale brown, more 

 so upon the nervures, which are thus rendered conspicuous ; 

 the cross-bar enclosed in a large lunate brownish central 

 spot ; toward the hind margin a series of dots upon nervures 

 indicates a slender brownish transverse line; a few more 

 dark brown dots lie along the extreme hind margin. Body 

 and legs whitish-brown; leg-tufts tinged with purple-red; 

 front tibias umbreous barred with pale yellow. 



Hardly variable except in a small degree in intensity of 

 markings. 



On the wing in June and July. 



Larva cylindrical, tapering a little from the third segment 

 to the head and from the eleventh to the anal extremity; 

 third and fourth segments subdivided by transverse wrinkles, 

 the others plump, well-defined, and puckered a little along 

 the sides ; the usual raised dots large, black or black brown ; 

 head and dorsal and anal plates lustrous, black or brown- 

 black ; skin of the body tough, smooth, and shining, ground 

 colour brownish-grey slightly tinged with fawn-colour and 



