212 LEPIDOPTERA. 



There is some variation in tlie depth of colour, from yellow- 

 brown to greyish red-brown ; and the colour becomes paler 

 rapidly in life, apparently rather from loss of the darker 

 brown scales than from fading, so that specimens which have 

 flown much become pale yellowish-brown. 



On till' winir in the latter half of May and through June, 

 but in a very forward season in thee.xtreme South of England 

 it has been found in tlight at the end of April. A very partial 

 second yeneration is occasioualh^ out at the end of Julv or in 

 August. This [ have myself seen in Surrej', and it has been 

 observed in tin- N^w Forest and in AV'orcestershire, yet it is 

 quite unusual here. On the Continent it appears to be in the 

 ordinary course. 



Lak\.\ short and tliick, the dorsal region rather ridged or 

 rough, from a raised surface of the back part of each seg- 

 ment ; bristles short but nuniri'ous; hi>a(l small, rounded, dark 

 brown ; dor.'^al surface of the body red-brown to the spiracles ; 

 the raised dots yellowish-wjiite ; dorsal line very slender, 

 white ; from it on each side of every segment is an oblique, 

 sometimes roughened black bar, or thick streak, reaching to 

 the spiracular line, which also is black and much undulating, 

 bordered beneath by a liroad reddish-yellow stripe ; stigmata 

 black ; under-surface psler than the dorsal region ; legs pale 

 brown ; prolegs of the body colour. 



Julv to September on Ecphorhui amiifidaloidcA, E. cjipuris- 

 sias. and probably other species of spurge. b\it in this 

 country to all appearance confined to the lirst-named plant. 

 We have no knowledge of a second generation of the larva, 

 althdULdi this seems to be usual on the Continent. 



PdTA short and thick ; brown, (llofmanu.) Not further 

 described. In a small cocoon of silk and earth close to the 

 surface of the ground. 



In this state through the winter. 



The moth is very active and lively in the daytime if the 



