320 TORTRICINA. 



A rare species ; variable in size and in the form of its mark- 

 ings, which are very inconstant, especially the apical one. 



The imago appears in July and August, usually among Thistles, 

 but also among other plants, such as Origanum vulgare, Rag- 

 wort, Wormwood, &c. It occurs at Charlton Sand-pit, near 

 Croydon, near Guildford, and a few other places. 



