90 THE MOTHS OF THE BRITISH ISLES. 



it occurred at Petersfield, on the borders of Sussex and Hamp- 

 shire, in 1877. 



It has also been recorded from Dunham, Cheshire. 



Abroad, its distribution extends to Amurland, Corea, and 

 Japan. 



The Dotted Fan- foot {Herminia cribrumalis (cribralis)). 



The fore wings of this species (Plate 35, Fig. 5) are whitish 

 tinged with brown, inclining to purplish on the outer margins ; 

 beyond the blackish central dot there are two series of blackish 

 dots crossing the wings, but these are not always distinct. 



The caterpillar, which feeds on various marsh grasses, Carex, 

 Lusula, etc., hatches from the Q,g^ in late summer, hibernates 

 when about half-grown, and feeds up in the spring. It is pale 

 greyish brown with fine yellowish freckles ; there are three lines 

 along the back ; the central one dark, finely edged on each side 

 with pale greyish, the outer ones pale ; the usual dots are 

 dusky and the spiracles are black. 



The moth may be found in June and July in fens and 

 marshes, where it hides among the herbage in the daytime, 

 but is easily seen and netted when it takes wing at dusk, or sits 

 on the sedges, etc., before or after flight. 



It is most frequent in the fens of Cambridge and Norfolk, 

 (Stalham), but occurs also in Suffolk ; Essex (Shoeburyness) ; 

 Kent (Deal); Surrey (recorded from marshes near Redhill, 

 Dorking and Guildford) ; Sussex ; Hants (bogs near Lyndhurst), 

 and, according to Barrett, Somerset. 



The Clay Fan-foot {Herminia derivalis). 



This local species has the wings pretty much of the same 

 shape as those of S. emortualis^ and has been mistaken for that 

 species; but the colour is ochreous-brown, and the cross fines 



