1 68 LEPIDOPTERA. 



hind margin rather clouded with the same; central spot dull 

 black, followed by a slender central curved transverse line 

 of the same colour ; hind martrin edged and dotted with 

 black ; cilia w^hite, clouded with smoky-brown. Antennas of 

 the female simple, body thicker, otherwise similar. 



Underside of the fore wings smoky-white in the middle, 

 clouded with smokj^-black toward the hind margin, with 

 yellowish white along the costa ; discal S])ot and a costal 

 spot beyond it dull black. Hind wings white, dusted or 

 stippled with smoky-grey ; central spot round, black, 

 followed by a slender stripe composed of the same kind of 

 fine grey markings, which also are rather crowded together 

 toward the hind margin. Body yellowish white ; legs white, 

 barred with black. 



Usually not variable ; but within recent years a tendency 

 has appeared in specimens occurring in the New Forest, 

 Hants, towards general or partial blackening of the wings ; in 

 one such specimen in Mr. S. J. Capper's collection the fore 

 wings from the base to the middle are broadly shaded and 

 striped with smoky-black, the lines become deep black stripes, 

 and the hind margin is broadly spotted and banded with 

 black, leaving spots of creamy-white ground colour ; the 

 hind wings are shaded over the greater portion with blackish 

 grey. This is a S])ecimen of unusual beauty. Another has 

 a broad band of smoky-black before the middle. These 

 I believe were among the earliest examples of dark variation 

 obtained ; similar specimens and all intermediate shades, 

 exist in this and several others of the best collections ; Mr. 

 Sydney Webb has some in which the black clouding is 

 around the margins ; Mr. P. M. Bright has one in which, 

 along with the dark clouding, the transverse lines have 

 become broad black stripes ; while others have only black 

 clouding between the uervures. Taking another Hue of 

 variation, but from the same locality, a specimen in the 

 collection of the Dublin Science and Art Museum is of a 

 clear greyish-white and devoid of costal spots. On the 



