LA RENTlD.-E—COREJf/A. 1 47 



2. C. fluctuata, L. — Hxpanse '■} to 1] inch. Fore 

 wings white, usually rippled with numerous fine lilack lines, 

 and with the nervures dotted with black ; central band broad 

 at the costa, black-brown, usually cut oft' in the middle of the 

 wing, or else far more slender. Kind wings white with 

 obscure transverse lines. 



Antenna; of the male pectinated with rather short ciliated 

 teeth, black-brown ; palpi bluntly ])rojecting, of the same 

 colour ; eyes deep black ; face and head black-brown dusted 

 with white ; thorax dark umbreous shaded with dull black, 

 and dusted with white; small llat crest at the back spotted 

 with the .same colours; abdomen white, dusted with dark 

 brown, and having twin black spots down the back ; lateral 

 tufts prominent, dusted with black ; anal tuft pale ochreous. 

 Costa of the fore wings arched at the base and apex, 

 straighter between ; apex very bluntly angulated ; hind 

 margin oblique, nearly straight ; dorsal margin faintly 

 rounded ; white or greyish-white, dusted with black, 

 obscurely rippled and scalloped in lines of grey or smoky- 

 black ; basal blotch conspicuous, dull black edged with deep 

 black ; central band usually confined to a large black or 

 brown-black blotch, very broad on the costa, and exten(lii:g 

 to the middle of the wing, or to two-thirds across, or forming 

 a complete band ; when this is the case the margins thereof 

 are formed by the first line, cnrved and indented, and the 

 second line, more oblic|ue, strongly toothed outwards in the 

 niiddlr, and usually duplicated by a grey line on the uutside, 

 but when the band is restricted to a blotch the corresponding 

 portions of these lines are obliterated or else very faint ; 

 near the apex is a small black costal blotch, from which a 

 line of grey crescents, sotiie of them tipped with black, 

 passes to the dorsal margin, and is closely followed liy tiie 

 rippled white subteniiinal line; whole liind-niarginai region 

 before and beyond this line often filled with faint rippled 

 smoky-black lines or ati.ms of clouds, but usually two 

 blacker dots are visibU^ at'ove the middle; cili;i wliite, 



