THE GREEN ARCHES. 235 



are not infrequently as black as the border, which is often 

 broader than in the specimen shown on Plate 116 (Fig. 4). 

 The caterpillar is ochreous brown dotted with black ; on the 

 middle of the back is a brown stripe enclosing a whitish central 

 line. A brown stripe along the sides is edged above with 

 whitish ; the head is pale ochreous brown lined with darker. 

 Stated by Barrett to feed on grasses and low plants, or, in the 

 spring, on young shoots of sallow ; said also to eat primrose 

 and dock. September to May. The moth is out in July and 

 August, and aftects lanes and hedgerows. I have found it more 

 frequently on flowers of ragwort, and on " honey-dew," than on 

 the sugar patch ; but have met with it occasionally darting 

 along some particular bit of hedgerow, in the late afternoon. 

 Although apparently uncommon in the Midlands, it occurs 

 more or less freely throughout England to Durham. In Ireland 

 it has been found in counties Dublin, Wicklow, Waterford, 

 Cork, Louth, Westmeath, Gal way (Kane), and, Barrett adds, 

 Antrim. 



The Green Arches (Eurois prasiud). 



This moth is shown on Plate 117. When c^uite fresh the 

 ground colour of the fore wings is a beautiful green, but this 

 often fades after a time, and the wings then assume an ochreous 

 hue. The cross lines are black relieved with whitish, and there 

 is a whitish blotch on the second line touching the outer edges 

 of the reniform stigma. The green colour varies in tint even 

 when the insects are alive ; and the black markings differ in 

 intensity, being much stronger in some specimens than in 

 others. The caterpillar is greyish brown, more or less tinged 

 with violet ; there are three fine whitish lines, and a series of 

 blackish diamond-shaped marks on the back ; the spiracles are 

 white, and there is an ochreous stripe below them. It feeds on 

 dock and other low plants, bramble, and in the spring on sallow 

 shoots and the young growth of bilberry. July to April, or May. 



