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SATYRID^E. 217 



show two striking variations ; in one case pale golden brown 

 alternating with dark golden brown ; in the other pale silvery 

 or ashy brown, alternating with dark reddish brown, or olive 

 brown. In the outer edge of the hinder silvery or pale 

 golden brown band, the white centres of the black spots of 

 the upper side are sometimes visible, and even at times 

 ringed with black ; this occurs in both sexes. In those 

 females which possess the pale silvery or ashy bands on the 

 hind wings, the apical and hind-marginal areas of the fore 

 wings are similarly pale on the under side ; in those having 

 the golden brown bands these areas are tinged with yellowish. 

 There is also variation in the number of ocellated spots in 

 the fore wings, the third from the costa being frequently 

 absent, moi"e especially in the males, though not exclusively 

 so, and occasionally a fifth af)i3ears near the anal angle. In 

 the presence or absence of these spots there is usually close 

 agreement between the upper and under sides, but I have 

 one specimen — a female — in which there are five spots on 

 the upper side and but four on the under, the absent one 

 being — not the unusual fifth, but the third. The spots of 

 the hind wings are extremely constant, though in some 

 specimens indistinct. Beyond these limits, aberrations seem 

 to be extremely rare, but Mr. Sydney Webb possesses a 

 specimen with no ocellated spots on the left fore wing ; and 

 Mr. J. E. Robson has a male in which the left hind wing has 

 a bleached appearance, from substitution of white scales 

 among the dark, on both upper and under sides. 



On the wing from the middle of July through August. 



Larva rounded, slug-like, sloping and tapering to each 

 extremity ; fiat beneath ; the whole surface covered with 

 very short grey bristles, but not so as to obscure the 

 markings ; head rounded. Pale ochreous, with a faint 

 greenish tinge ; dorsal line conspicuous, brown ; sub-dorsal 

 line broad, of a pale shade of the ground colour, and edged 

 on each side with greyish brown ; spiracles black, above 



