20O LEPIDOPTERA. 



The moth sits in rose bushes during the day and is easily 

 disturbed, yet tiies for a very short distance and will even 

 settle on one's clothes. Late in the afternoon it flies of its 

 own accord. Exceedingly plentiful in the South, and to 

 be found throuj/hout these Islands somewhat commonly. 

 Abroad all over Central and Northern Europe, North Italy, 

 Dalmatia, and in North America at Vancouver. 



3. D. bifasciana, Hiih. ; audouinana, Dwp., Wilh. — 

 Fore wings black with yellow tip and marginal spots ; hind 

 wings smoky black. 



Antennae simple, brown ; palpi small, divergent, pale 

 brown ; head, thorax, and abdomen black-brown. Fore 

 wings rather short and broad ; costa not folded, flatly arched ; 

 apex angulated; nervures thickened; colour black-brown, 

 much rippled with bluish silvery lines ; on the dorsal margin 

 near the base is a pale yellow spot, and another, smaller, 

 beyond it on the costal margin ; beyond this one, two or 

 three more yellow dots, and the entire apical and hind 

 marginal area nnrrowly clouded with yellow, and across the 

 wing are two or three lustrous blue lines, having between 

 them minute tufts of lustrous raised scales ; cilia con- 

 colorous. Hind wings with their cilia smoky black. Female 

 similar. 



Undersides of all the wings smoky dark brown. 



On the wing in June. 



Larva and pupa unknown, but the food plant appears to be 

 oak, among which the moth is nearly always found ; indeed 

 on one occasion this moth was reared from a gall of Cyidps 

 lignkola, gathered with others from oak bushes. A rare 

 species, taken occasionally flying after sunset at the edges of 

 woods, and even more rarely on fences. It has been recog- 

 nised as British since the year 1S46, but still very little is 

 known about it. It has been taken — always rarely — in Kent, 

 Surrey, Sussex, Hants, Dorset, Somerset, Essex, Bucks and 

 Herts, but, as far as I know, not elsewhere in the United 



