26o LEPIDOPTERA. 



rocks and stones ; and in quarries wlien close to the sea 

 beach. Found in the Isle of Wight ; in Dorset at the Isle 

 of Purbeck ; in Devon at Pl3anouth and Teignmouth ; and in 

 Somerset at Brislington. In Wales near Tenby and Saunders- 

 foot; and in Ireland near Cork. So far as I know this is 

 the extent of its range in these Islands. Abroad it is found 

 in France and North Germany. 



9. D. herbosana, Barr ; tanaceti, ^in. — Expanse \ 

 inch (12 mm.). Fore wings rather narrowly trigonate ; 

 olive brown, with a long, oblique, pointed, and rather 

 narrow, paler dorsal blotch. 



Antennte dull brown, white in front ; palpi, head and 

 thorax brown ; abdomen olive brown. Fore wings somewhat 

 trigonate, narrow at the base ; costa folded, very gently 

 arched ; apex somewhat pointed, hind margin oblique ; 

 olive brown, minutely dusted with yellow ; dorsal blotch 

 whitish brown, not very broad but extended and pointed 

 towards the apex, and very obscurely divided ; costal dots 

 numerous, geminated, brovvnish white ; from the middle of 

 these a double pale lustrous line runs to the anal angle ; 

 ocellus extremely faint ; before the extreme hind margin are 

 three or four black dots ; cilia shining pale olive brown. 

 Hind wings and their cilia smoky white. Female similar, 

 but costa not folded. 



Underside of the fore wings shining leaden-brown. Hind 

 wings leaden white. 



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

 generations. 



Larva apparently unknown. 



This is a northern species, in some places frequenting the 

 slopes of hills :ind waste ground generally, in others abound- 

 ing on sea sand hills. It has been supposed to be identical 

 with 1). tanareti of Wilkinson and Stainton, but the descrip- 



