174 LEPIDOPTERA. 



apex purple, and a white cloud along the dorsal margin. 

 Hind wings smoky white, with the apex broadly clouded 

 with faint crimson. Legs brownish white. 



Rather variable in the extent of the yellow ground colour 

 or of the crimson areas respectively, some individuals 

 becoming almost wholly suffused with the latter colour. In 

 size our specimens are uniformly small as compared with 

 those from abroad. 



On the wing in June, July, and August, possibly in two 

 generations. 



Larva. Head small, nearly sphericHl, slightly depressed ; 

 yellow, the mandibles and ocelli brown, behind the latter are 

 two black spots ; body fusiform ; second segment, which has 

 no corneous plate, distinguished by a double ring of circular 

 black dots, each surmounted by a bristle, as also are the 

 remaining black raised dots of the body ; greyish-green 

 tinged with vinous red ; from the third to the twelfth 

 segment is a distinct broad white dorsal stripe ; spiracular 

 stripe also white ; spiracles very minute, white surrounded 

 with brown ; ventral area dingy white and without stripes ; 

 legs and prolegs of the colour of the body, the latter marked 

 at their base with a triple black dot. (Milliere.) 



September and October on the flowers of the rosemary 

 (Bo»iitnrina officinalis), and on those of thyme {Thymus 

 scrpi/llvi/i), living in a silken tube, feeding up rapidlj', but 

 Iving many months in this condition, in cocoon. There is 

 some reason to suppose that in another generation it feeds 

 up in July, and emerges almost immediately, but this is 

 somewhat conjectural. 



Pupa dull j-ellow green; abdomen brown, its extremity 

 furnished with several fine hooked bristles. In an oval 



tough cocoon of paper-like material, among moss on the 



ground, usually attached to some solid object. (]\lilli6re.) 



