63 



It feeds on the black-thorn, wild plum, or sloe. 

 The chrysalis is enclosed in a web attached to a stem. 



BOMBYCIEOEHES. 



THYATIRA DERASA. 



BUFF ARCHES. 

 Plate XL. Figure I. 



Localities for this species are York, Doncaster, Sutton- 

 on-Derwent, Charmouth, Bristol, Faversham, Brighton, 

 Canterbury, Dartford, Dorking, Clapham, Peterborough, 

 Rotherham, Black Park, Arundel, Barnstaple, Gloucester, 

 Monks Wood, Llanelly, Durham, Killarney, Birkenhead, 

 Burton-on-Trent, Cambridge, Lower Guiting, Kingsbury, 

 Huddersfield, Exeter, Worthing, Lyndhurst, Worcester, 

 Tenterden, Scarborough, Shrewsbury, Stowmarket, Man- 

 chester, Plymouth. 



The perfect insect appears in June and July. 



The caterpillar is fine dark brown, with a conspicuous 

 white spot on each side of the fifth, sixth, and seventh 

 segments. 



The date of the appearance of the caterpillar is in Sep- 

 tember. 



It feeds on the bramble. 



