«i8 LEPIDOPTERA. 



tlotcli large, but existing rather as a large dorsal blotch, and 

 entirely cut off from the costa though having a projection 

 towards it in the middle, rich chocolate-bi'own or olive-brown ; 

 central band narrow and not very distinct, throwing off, 

 below the middle, a branch which points outward, and runs 

 into the apex ; costa dotted and hind margin dashed with 

 tawny, and the apex occupied by a large similar dot ; cilia 

 white. Hind wings and their cilia smoky white. Female 

 similar. 



Underside of the fore wings shining, lead colour ; cilia and 

 costal dots white. Hind wings leaden white. 



Variable in the size of the dorsal blotch, which sometimes 

 is much depressed, or partially obliterated, but often has the 

 upper pi'ojection very distinct and almost forming a spot ; 

 also in the central band, which often is partly obliterated. 



On the wing at the end of May and in June. 



Larva thus desci-ibed by Hofmanu : " Dirty green with 

 dark through-shining dorsal vessel, and whitish, hair- 

 bearing raised dots ; head and dorsal plate pale brown, 

 shining, upon it and on the anal segment, two black dots." 

 But he adds, " in July on Vlcia." Heinemann, however, says, 

 on bilberry, and this is obviously correct ! Sorhagen says, in 

 April and May on Vaccinium myHill/'s and 1\ uliginosnm. 

 Evidently this species requires careful working out. 



Generally to be found on high hills and elevated com- 

 mons, wherever the whortleberry grows freely ; but on the 

 extensive hill districts of the Midlands most abundant, 

 sitting among the plants but flying up every moment, in sun- 

 shine, at the footstep ; and at sunset so confusing the eye with 

 its multitudes that it is difficult to see any other species flying 

 with it. This may be observed in a most striking degree on 

 the great beds of Vaccinium on the hills of Cannock Chase, 

 Staffordshire, and on the Pennine Hills further north. To 

 be found, though not in equal numbers, in Kent, Surrey, 



