BOARMIIXE-CLEORA. 165 



There is some variation in the colour of the fore wings to 



greener, greyer, or more smoky, and to a more distinct tinge 

 of orange clouding in the middle between the two lines, but 

 always a close resemblance to the lichens, among which it 

 rests, is maintained. In Mr. Percy M. Bright's collection are 

 very beautiful s])ecimens from the New Forest, some white- 

 grey with hardly a tinge of green, the lines and other mark- 

 ings very slender and faint, others richly black-green, with 

 the transverse lines nearly lohifc. 



Very light and handsomely marked specimens have 

 been taken in the woods of Corsemalzie, Wigtown, by 

 Mr. J. G. Gordon. 



On the wing in June and July, but sometimes from the 

 end of May till August ; and there is occasionally a casual, 

 very partial, second generation in the beginning of October. 



Larva warty, the spots raised ; small dorsal humps on the 

 fifth to the twelfth segments, those on the fifth and ninth 

 the largest ; head rounded, pale green spotted with black ; 

 body very pale whitish-green, the colour of the lichen on 

 which it feeds ; between the protul)erances is a row of blackish 

 dorsal spots ; usual spots black ; spiracular line deep l)lack, 

 much waved, emitting a series of oblique lateral dashes 

 pointing backward ; often also with black oblique subdorsal 

 dashes pointing forwards from the second to the seventh 

 segments, most prominent on the fourth ; incisions of the 

 undersurface clouded with dark grey ; ventral spots black ; 

 legs spotted with black. 



September till June on lichens, especiall}^ those crisp, 

 much branched, grey lichens which grow on old palings and 

 the trunks of trees, also on the fibrous greenish-grey lichens 

 of the trunks of hawthorn, blackthorn, oak, elm, apple and 

 poplar, feeding at night, but remaining during the day among 

 these lichens, admirably concealed by its jjerfect resemblance 

 thereto. 



Pupa slender, antenna-cases prominent and coarsely cross- 



