OTODONTID^. 87 



Antennae of the male strongly pectinated, the teeth curved 

 in so that their tips meet ; black, shaft silvery-white. Head 

 and collar white or greyish-white, the latter densely covered 

 with long curved-back scales. Thorax broad, black on the 

 back, but more or less barred with orange, and with whitish 

 tufts at the sides ; abdomen moderately stout, dark grey, 

 narrowly barred at the edge of each segment with whitish, 

 and having the apex and sides tufted with white scales. Fore 

 wings narrow, costa very slightly curved, apex much rounded 

 but elongated, the curve from it passing regularly down the 

 hind margin round the anal angle, and becoming very slight 

 on the dorsal margin ; white ; a black dot close to the base is 

 followed by a transverse row of similar dots, beyond which is 

 the first line, perpendicular, deep black, edged toward the 

 base with orange ; from this first line the space to the middle 

 of the wing is occupied by a broad transverse purplish-grey 

 band, the outer edge of which is bounded, from the costa, by a 

 deep black line edged with orange, curved inward, and forming 

 a hollow at the edge of the band, with a deep indentation, but 

 becoming obliterated half across the wing, below which the 

 band spreads out more broadly ; just beyond this, in a clear 

 space, is a long streak at the end of the discal cell, and above 

 this four black costal spots, from three of which spring 

 parallel slender blackish transverse lines, all of them forming 

 similar crescents or scallops in their course to the dorsal 

 margin near the anal angle; a broad hollow, or crescent, 

 outside the third, and towards the apex, is occupied by a large 

 ovate purplish-grey blotch ; a broad clear white band, only 

 divided by faintly brown nervures, lies before the hind margin, 

 which is very distinctly spotted with black ; cilia white, very 

 short. Hind wings short and rather narrow ; rounded be- 

 hind ; white, faintly tinged with grey ; nervures faintly grey ; 

 central spot narrow, greyish ; sometimes a faintly indicated 

 greyish cloudy transverse band is visible in the middle ; hind 

 margin regularly and distinctly spotted with black, the spots 

 nearest the anal angle aggregated together ; cilia white. 



