1 64 LEPIDOPTERA. 



is a broad bluish creamy-white blotch, sometimes having 

 faintly dusted darker lines in the middle of its base ; before 

 the hind margin are faint yellowish streaks ; and a similar 

 line along the base of the cilia is shaded outwardly with 

 black-brown over the latter. Hind wings black-brown. 

 paler at the base ; cilia white. Female similar. 



Underside of the fore wings smoky-black, shaded towards 

 the middle with white ; costa dotted with white. Hind 

 wings leaden-white shading to black at the margins. 



On the wdng in May and the beginning of June ; 

 sometimes before the end of April. 



Larva up to the last moult pinkish-white ; often much 

 obscured by the dark intestinal canal ; afterwards it 

 becomes white ; raised dots red and conspicuous ; anal plate 

 grey, and a band of the same colour crosses the base of the 

 anal flap ; head black ; dorsal plate at first shining brown, 

 ^finally pale yellow mottled with black, and with a black 

 "border behind. 



September and October in the oak-apple, and woolly-gall 

 of oak (galls of Andrimcs terminalis and^. ramuli) living on 

 the internal vegetable substance when the galls are ripe and 

 dry ; giving no outward indication of its presence, but 

 easily obtained by gathering the galls from the trees 

 scattered about in fields and hedgerows. When full fed 

 spinning up under bark or in a crevice in an old gall of 

 Cynips kollari. (Dr. J. Wood.) 



The moth hides in oak trees, and is not very easy to 

 capture or obtain. Mr. C. Fenn says that it flies round the 

 tops of the higher branches of oak trees in woods from 4 or 

 5 to 7.30 P.M. Earlier in the day it sits on the boughs and 

 twigs, often on the outside sprays of small oaks, and may 

 then be disturbed by the beating-stick, when it flies rather 

 high, and rarely descends toward the ground. Inhabiting 

 •oak woods in Kent, Surrey, Sussex, Middlesex, Dorset, 



