338 LEPIDOPTERA. 



Underside of the fore wings smoky black ; costa pale 

 yellow ; cilia yellowish white. Hind wings white. 



On the wing at the end of May and in June, and as a 

 second generation in July and August. 



Larva semi-transparent yellowish white ; spiracles black ; 

 head brown ; body rather plump, and with well-marked 

 divisions to the segments. 



August to October, and after hybernation to the end of 

 March feeding in the stems of Enjwjitnn maritimum, eating 

 out the pith, and on arriving at a knot eating its way out to 

 re-enter the stem just below, at last entering the root-stock 

 and feeding on the pipe-like underground runners. (G. 

 Elisha.) Ajjparently an earlier generation feeds in June 

 and July. 



Pupa red-brown, in a silken cocoon in the root-stock of 

 the food-plant. 



The moth is excessively sluggish, sitting on the plants of 

 Eri/?igiu7n, or on the sand close by, during the day, but is 

 scarcely ever seen to fly. Exceedingly local ; confined to 

 the sea-sandhills on which the sea-holly grows, and at present 

 only known to occur on the coasts of Kent and Essex ; and 

 abroad on that of France. 



Genus 5. DAPSILIA, 



Antennae slender ; palpi parallel, but set widely apart and 

 strongly porrected ; fore wings narrow, without costal fold, 

 very delicate ; vein one of hind wing thickened. 



We have but one species. 



1. D. rutilana. Hub. — Expanse ij inch (10 mm.). Fore 

 wings narrow, silky, deep j'ellow with four transverse dark 

 red bands. 



Antennae rather long, black ; palpi, head, and thorax red- 

 brown ; abdomen grey-black. Fore wings narrow ; costa 



