296 LEPIDOPTERA. 



the stigmata more abundantly dusted with dark grey than 

 tlie rest of the wing; costa regularly and broadly spotted 

 with black to beyond the middle, the intervals being white, 

 beyond this three white dots lie in a clouded space toward 

 the apex ; hind margin and cilia ornamented with white 

 loops which run out to the tips of the crenulations, and 

 between them enclose small grey cloudy spots. Those 

 examples in which the subterminal line is clouded with 

 orange-yellow have the edges of the stigmata of the same 

 colour, also small clouds near the base of the wing and 

 sometimes on the other transverse lines. Hind wings white, 

 much dusted with pale smoky-grey, especially so toward the 

 hind margin ; nervures smoky-grey to the middle, where is a 

 slender, curved, transverse, grey stripe, indented throughout, 

 and some of the angles blackened ; central spot small, obscure, 

 grey; toward the hind margin the grey dusting forms a 

 broad cloud which, however, is broken close to the margin by 

 an obscure, broken, notched, white stripe ; cilia white dusted 

 with grey. Female stouter, also apparently less disposed 

 toward yellow clouding on the fore wings, otherwise similar. 



Underside of the fore wings greyish-white, with the 

 nervures darker ; discal cell smoky-grey and a similar 

 partial transverse line beyond it. Hind wings white, dusted 

 with light brown along the costa, and with dull smoky- 

 brown toward the hind margin ; central spot small, smoky- 

 black ; beyond it is a slender cloudy-black transverse line, 

 blackened on the nervures ; cilia white. Body greyish-white, 

 anal tuft light reddish-brown ; leg tufts smoky-white ; tibite 

 dark brown, barred with white. 



Variable in the ground colour and also in the depth of the 

 markings, the central portion sometimes being of far deeper 

 tone than the rest ; the yellow colouring also is uncertain- 

 partial or even absent. In Norfolk there appears to be a 

 tendency toward extreme whiteness in the ground colour, 

 the markings becoming also far paler, even in rare instances 

 to pale pearly grey. One in my own possession is almost 



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