46 HEATH BUTTERFLY. 



Scotland, as also in the Shetland Islands; near the lakes of Killarney, 

 and on the mountains of Donegal, in Ireland; Kinnordy, between Bala 

 and Festiniog, in Wales. 



The perfect insect occurs from the first week in June to the second 

 or third in August. 



The date of the appearance of the caterpillar is in May. 



It feeds on the Rhyncospora alba. 



The expanse of the wings in this species varies from an inch and a 

 half to an inch and three quarters. The fore wings are of a fulvous 

 brown colour, the fringe of a pale grey; near the outer corner are 

 one or more eyes, following the line of the margin, all but one being 

 in some specimens scarcely visible. The hind wings are rather darker 

 than the fore ones, and there is a row of faint eyes following also 

 their outer margin, at a little distance within it. An irregular band 

 of a paler colour than the general tone of the wings runs more or 

 less distinctly across them about the middle, following the same course 

 as the eyes. 



Underneath, the fore wings are nearly of the same colour as their 

 upper surface. Near the outer corner are one or two dark eyes — a 

 white dot in the centre, surrounded by a ring of black, and this by 

 one of very pale buff. These eyes are followed by two or three 

 smaller and less distinct ones, pale buff with a black dot in the 

 centre. Within these is an irregular bar of still paler buff, wider 

 at the upper than the lower part: it goes nearly, but not quite, 

 across the wings. 



The hind wings are greyish brown at the base, and as far as the 

 middle, edged by an irregular very pale buff band, which runs nearly 

 across the wing, the remainder of which is pale reddish brown, in the 

 middle of which is an irregularly-waved row of eyes, each formed by 

 a white speck surrounded by a black ring, and this by a pale buff 

 one. 



This is an exceedingly variable insect, and as may be supposed, 

 several so-called species have been made out of one; permanent 

 varieties seeming, as in the case of some other species, to belong to 

 particular localities. 



One described under the name of 'Polydama,' measures about an 

 inch and a half in the extent of its wings; the fore wings are of a 

 yellow brown colour, with two obscure eyes. The hind wings are 

 brown, but with the inner edge broadly marked with dull white or 

 pale buff, and there is a small obscure eyelet near the hind angle. 



Another, described by the specific name of 'Typhon,' of the same 

 size as the previous named ones, is described as follows: — 'On the upper 



