LARENTID.-E—EUPITHECIA. 31 



nionly near Llangollen, and elsewhere on mountainous por- 

 tions of North Wales, has lost the grey or silver-grev tone of 

 ground colour, and has become pale brown of a peculiar soft 

 tone, but with the black transverse lines rather less distinct, 

 while the whitish stripes of the triple first and second lines 

 are clearer. In the Isle of Man a rather pale tone of the 

 normal ground colour obtains. In the Hebrides, with an 

 intermediate pale grey-brown ground colour, the delicate 

 black lines become thickened, and of a deeper black, and 

 very striking ; in the Orkneys the colour is lighter, brighter 

 brown, even yellow-brown or olive-brown, but the lines not 

 more than usually black ; and in Shetland, along with a paler, 

 more drab-brown tone of ground colour, the delicate trans- 

 verse lines and even their costal commencements become 

 more and more indistinct, until, in some specimens, they are 

 quite obliterated, the whole wing is soft smooth pale brown, 

 the discal spot itself, and the blackening of the nervures, 

 being hardly observable. Others from the same islands have 

 the lines blue-black and thickened with black clouding; 

 while others again, are of a smoky slate colour with obscure 

 markings. In the AVest of Ireland there is a similar ten- 

 dency to brown colouring, but without the whitish inter- 

 stripes ; and Mr. Kane has reared a specimen of a blackish- 

 brown colour, with the lines obsolete, from a larva found in 

 Galway. 



On the wing in May and June. 



Larva short and thick, hinder segments rather the 

 stouter ; head rounded, black or black-brown ; whole dorsal 

 region dull leaden-grey, grey-brown, or pale smoky-brown ; 

 dorsal and subdorsal lines visible in the paler specimens and 

 of a darker brown, thickened in the middle of each segment : 

 spiracular region and undersurface dusky greenish-white or 

 yellowish-white ; legs black. When very young entirely black. 



June till the beginning of August on the seeds of SiUnc 

 inflata, S. maritima, and other species of catchfly; possibly 



