NOTODONTID^. 83 



backward, forming hollow tubes which each contain a whip- 

 like process. 



PuPjE in hard cocoons upon the bark of trees. 



1. C. bicuspis, Bkh. — Expanse 1^ to \\ inch. 



Creamy -white ; back of thorax, central band, and sub- 

 apical space of fore wings, purple-black ; white area much 

 dotted with black. 



Antennae of the male densely pectinated, the teeth solid, 

 black and so closely curled-in that their tips meet or cross 

 each other, shaft whitish ; head snowy-white, with downy 

 tufts at the bases of the antennge ; there is a black spot at 

 the junction with the thorax above. Collar broad and deep, 

 occupying the whole front of the thorax, and covered with 

 long curved scales, pale yellowish or creamy-white, re- 

 mainder of the thorax covered with broad curved transverse 

 dark brown bands so that it seems wholly black-brown 

 except at the margins and some faint intermediate spaces of 

 creamy-white. Thorax and abdomen both stout, the latter 

 grey, covered with white scales, more densely so at the sides, 

 and having a creamy-white anal tuft. Fore wings long and 

 narrow ; costal margin straight to near the tip where it 

 is rounded, the curve passing smoothly round the somewhat 

 elongated apex ; hind margin oblique, very gently and 

 smoothly curved, the curve passing, in one sweep, round the 

 anal angle and dorsal margin ; clear creamy-white ; a black 

 dot on the subcostal nervure near the base is followed by a 

 perpendicular transverse row of four or five similar dots just 

 before the first line, which is black and forms the inner edge 

 of a purple-black transverse band, variable in width, extend- 

 ing on the dorsal margin to the anal angle but tapering 

 through the middle of the wing and again suddenly widening 

 as it approaches the costa. Before the tip of the wing is an 

 elongated purple-black blotch extending from the costa 

 inward ; between this and the central band are three black 



