QUADRIFID^E. 247 



with black ; rough, somewhat twig-like, and having fleshy- 

 filaments at the sides ; head rather forked at the top. 



Pup^e of ordinary form, covered with a hoary powdery 

 efflorescence, in a slight cocoon among debris. 



We have five species, one being of excessive rarity : 



A. Fore wings grey, striped and marbled with black ; hind 

 wings black with pale blue band. C. fraxini. 



A 2 . Fore wings smoothly grey with black lines ; hind wings 

 pinkish-crimson with black bands. C. electa. 



A 3 . Fore wings brownish-grey dusted with darker ; hind 

 wings dull crimson and black ; cilia broadly white. 



C. nupta. 



A 4 . Fore wings marbled, pale brown, black, and white ; 

 hind wings rich crimson, inner black band perpen- 

 dicular and curved. C. promissa. 



A 5 . Fore wings marbled, yellow-brown and black, with 

 whitish central blotch ; hind wings purplish-crimson, 

 the inner black band much angulated. C. sponsa. 



1. C. fraxini, L. — Expanse of inches. Very robust; 

 fore wings grey dusted with blue-grey, and banded with 

 zigzag black stripes, some of them in pairs ; hind wings 

 brownish-black with a broad pale blue central band, and the 

 hind margin white. 



Antennas of the male long, simple, cylindrical, ciliated in 

 minute tufts, thickened toward the base and tapering off, 

 black-brown ; palpi short, thick, broadly tufted, grey-brown 

 dusted with white, apical joint distinct ; eyes black-brown ; 

 head tufted, black-brown dusted with white; thorax robust, 

 grey-brown, abundantly dusted with white, black, and golden- 

 brown ; the shoulder-lappets rather more hoary-brown, banded 

 with dull black and edged with dull white ; at the back is a 

 short broad spreading black crest edged with greyish-white ; 

 abdomen stout, round, and tapering, smoky-black with a 

 shading of bluish-white, and the edges of the hinder 



