l6o THE MOTHS OF THE BRITISH ISLES. 



is out in May and June, but in favourable seasons has appeared 

 in late April. When on the wing at night it is freely attracted 

 by light, but otherwise not often noticed. The species has 

 occurred in many of the English counties from Devon to Durham, 

 but it seems to be only common in the eastern counties, and 

 most frequent perhaps in Suffolk. It has been recorded from 

 South Wales, but is seemingly absent from Ireland. 

 The range abroad extends to Amurland. 



The Scallop Shell {Eucosmia undulata). 



Wings pale greyish, sometimes ochreous tinted, and crossed 

 by numerous dark-grey wavy lines inclining to blackish on the 

 front margin of the fore wings ; the waves of the central pair of 

 lines on the fore wings often meet and so form a series of rings ; 

 sometimes the space between the eighth and twelfth lines is of 

 a dusky hue, and occasionally it is distinctly darker and band- 

 like ; the outer margin of all the wings is brownish and traversed 

 by a wavy white line. The male has tufts of blackish hair in a 

 fold on the inner margin of the hind wing, this is noticeable on 

 the upper side, but is best seen from the under side. (Plate 60, 



Figs. 4 6, 5 9.) 



The somewhat dumpy caterpillar is reddish-brown with four 

 yellowish lines along the back ; a greyish stripe along the sides, 

 and a creamy stripe along the black spiracles ; head, pale brown 

 and glossy. It feeds on sallow, aspen, and bilberry, and may 

 be found from August throughout the autumn in spun-together 

 leaves at the tips of the shoots. (Plate 62, Fig. 2.) 



The moth is out in June and July, and occurs in woods where 

 there is a good growth of bilberry, or in marshy spots where 

 sallow bushes abound. 



In England the species is widely distributed over the southern 

 and eastern counties ; its range extends through the Midlands 

 to Cheshire, Lanes., Cumberland and Westmorland, rarely in 



