DOARMID.E-METROCAMPA. 113 



and the first and second lines of the fore wings are not quite 

 constant in their positions. A specimen in the collection of 

 the late Mr. H. Doubleday, in the Bethnal Green Museum, 

 has them so near together that a narrow central band is 

 formed by them, running to a point in the dorsal margin, 

 where they actually meet. 



On the wing in June and July. 



Larva not cylindrical, the undersurface being flat ; pro- 

 vided with an extra pair of effective prolegs — that is, two 

 pairs of ventral, and one of anal prolegs — but no trace of any 

 ineffective legs ; third and fourth segments much thickened ; 

 then there is a regular increase in size from the fifth to the 

 eleventh, the divisions between all being well marked ; on 

 the twelfth is a small double eminence ; the raised dots are 

 black, tipped with white, those on the hinder segments being 

 conspicuous ; face flattened, grey ; head darker grey, dotted 

 with brown, and having a curved black streak on each lobe ; 

 general colour brownish-green, drab, purple-brown, or purple- 

 grey, often dusted with darker ; legs of the same colour ; 

 sometimes the seventh and eighth segments are slightly 

 banded with a darker shade ; along the spiracular region is a 

 curious series of fleshy bristly filaments, of the colour of the 

 body. 



September till May, on oak, birch, sallow, hawthorn, 

 blackthorn, hornbeam, ash, beech, elm, and other deciduous 

 trees, also on broom ; hybernating on the food while quite 

 young, but feeding, in mild weather, throughout the winter, 

 on the buds and bark of the young shoots. 



Pupa not very stout, the body portion approaching to 

 cylindrical but a little thicker in the middle ; wing-covers 

 dull from very abundant minute lines of irregular sculpture ; 

 antenna-covers strongly cross-ribbed in the form of the joints 

 and pectinations ; limb-covers closely compressed ; segments 

 glossy, the middle portions furnished with scattered punctures 

 which are not very abundant ; abdominal segments regularly 



VOL. VII. H 



