TRIFID^. 4t 



nished with four or five oblique crests ; fore wings broad, 

 especially so behind ; hind wings moderately ample, vein 5 

 arising below the middle of the cross-bar, curved and 

 moderately stout, but becoming slender and weak toward 

 the hind margin. 



We have but one species, which also is the only one found 

 in Europe, but several handsome and closely allied species 

 occur in India, Japan, Jamaica, and North America. 



1. T. atriplicis, />.— Expanse U to If inch. Fore 

 wings blackish-brown marbled with green and pale purple ; 

 in the middle is an oblique white blotch, and before the 

 hind margin a widely augulated pale line ; hind wings pale 

 brown. 



Antenna of the male simple, very minutely ciliated, dark 

 brown; palpi small, narrowly tufted, purple-brown, apical 

 joint prominent ; head strongly tufted and having a deep 

 channel across the face, above which is a strong tuit at the 

 base of each antenna and another between them, dark brown 

 with a green tinge ; thorax broad, robust, and very densely 

 covered with dark brown scales; collar faintly barred with 

 pale green or dusky white ; shoulder lappets dusted with the 

 same and having a green dash down the middle ; top crest 

 short, back crest large and prominent, both dark brown, 

 barred and tipped with pale green ; fascicles short, brownish - 

 white ; abdomen dull smoky-brown, with dorsal crests on 

 several segments, those on the second and third conspicuous, 

 all dark brown; lateral tufts small, anal tuft narrow and 

 flattened. Fore wings broad; costa rather curved, more 

 strongly so toward the apex, which is bluntly rounded ; 

 hind margin crenulated, curved but very full and hardly 

 oblique except close to the anal angle ; dorsal margin straight 

 to near the base, where it curves in ; colour black-brown, 

 marbled with bright green and pale greyish-purple ; at the 

 extreme base are two green or white spots edged with black ; 

 basal line black, abbreviated, and broken into two curved 



