2IO THE MOTHS OF THE BRITISH ISLES. 



absent from the central area of the wings (ab. monticola^ Stand.), 

 and a specimen approaching this form has been taken in 

 Perthshire. 



The caterpillar is pale green with a dark-green edged 

 ochreous brown stripe along the middle of the back, and green 

 stripes on each side ; the usual dots are black, and the plates 

 on first and last rings are brown, as also is the head. It feeds, 

 in September, on the seeds of eyebright {Euphrasia officinalis). 



The moth is out in July and August, and is found very 

 locally, flying in the late afternoon among its food plant, on the 

 moorlands and pasture-grounds of Northumberland, Cumber- 

 land, Durham, and Westmorland; and has been reported from 

 Hawkshead, in Lancashire. In Scotland, it is common in 

 suitable parts of Roxburghshire and several localities in 

 Clydesdale; thence widely spread to the Orkneys. Only noted 

 from the Mourne Mountains in the north-east of Ireland, but 

 probably to be found in other parts of that country. 



Pretty Pinion {.Perizoma hlandiata). 



This species (Plate 83, Figs. 7, 8) is also known as adccquata^ 

 Borkhausen, the name under which it is catalogued by 

 Staudinger. As a rule the central band on the whitish fore 

 wings is only represented by a round, or sometimes tri- 

 angular, blackish spot on the front margin, a smaller blackish 

 mark on the inner margin, and some dusky clouding between 

 these two portions. In specimens from the Hebrides the band 

 is more or less complete, and in some of them it is very much 

 narrowed, especially towards the inner margin (ab. coarctata^ 

 Prout). 



The caterpillar is green, with three crimson lines, the outer 

 ones bent inwards to the central one on the middle of each 

 ring ; two lines above and one below the yellowish spiracular 

 line are pink ; head green, tinged and freckled with pink. It 



