3o8 LEPinOPTERA. 



sunset is continued into the night, since it comes occasionally 

 to light. 



This species was not recognised as distinct till the year 

 1868, when it was described by Mr. E. ]\IcLachlan from 

 specimens collected in Norfolk by Lord Walsingham (then 

 the Hon. Thomas de Grey), after whom it was named. It 

 continues to be locally common, though sporadic, in the 

 light lands of Norfolk and the adjoining counties of Suffolk 

 and Cambridge, and has been taken in Somerset. This 

 is, I think, the extent of its known range in these Islands, 

 and it does not seem to have been recognised abroad. 



10. E. flaviciliana, Wilh. — Expanse \ tofW inch (12-11. 

 ram.). Head and base of forewings white ; central band 

 dark crimson, outer area brilliant rose-pink. 



Antennfe white above, pale brown beneath ; palpi, head, 

 and thorax creamy white, with a faint pink tinge ; abdomen 

 whitish brovyn. Forewings elongated and rather pointed, 

 costa nearly straight ; apex sharply rounded, elongated ; 

 hind margin rather full; base white except a pink tinge 

 toward the costa, dorsal region white ; central band narrow 

 oblique, dark crimson losing itself toward the costa in a 

 large rose-pink cloud of great brilliancy, which occupies the 

 rest of the wing to the apex and anal angle ; cilia orange- 

 brown. Hind wings, and their cilia, smoky white. Female 

 similar, but with hind wings a little darker. 



Underside of the forewings smoky brown ; costa and 

 hinder cilia tawny. Hind wings smokj* white. 



On the wing in July and the beginning of August. 



Larva plump but active, of varying colour, sometimes 

 wholly dull green, or green with more or less of a pinkish 

 tinge, reddish-brown, or dirty brown ; the head and plates 

 brown. When young blackish-brown, with a black head. 



August to October in the flower and seed-heads of 

 KnmUia arvensis (field scabious) feeding on the seeds, 

 mating out the insides of one seed-vessel and then passing to 



