GE( \ME TRin. K— iVEMORIA . 29 1 



lated in the middle of the hind raari>'ia ; anal ang-le S(iuared ; 

 colour the same shade of green as the foi-e winu's, with a 

 .■similar tendency to fading ; just before the middle is a direct, 

 slightly sinuous, but not curved, transverse white line ; cilia 

 green, with the tips white. Female similar, a very little 

 stouter. 



Undersides of all the wings of a rather softer green, with 

 a slender shaded white stripe continuously. Body and legs 

 greenish-white, the latter brown in front. 



Apparently not very variable, but extremely liable to 

 fading to a far more dull green or even yellowish-brown, in 

 life as well as in the cabinet. Cumberland specimens in the 

 collection of Mr. Sydney Webb have the cilia of a more 

 smoky tint. 



On the wing in May and June. 



Larva rather slender, somewhat flattened and taperino- 

 toward the head, which with the second segment is acutely 

 bifid ; anal segment ending in a pointed ±la[) ; the whole 

 skin rough with fine granulations ; ground colour full clear 

 green or yellow-green ; the roughnesses of the skin wdiitish ; 

 points on the head and second segment red ; down the back 

 is a purple-red stripe, or in some individuals this is inter- 

 rupted on the middle segments, and, with some small whitish 

 dashes, forms five acute diamonds ; subdorsal line whitish ; 

 spiracular line yellowish- or whitish-green, in sonje specimens 

 having in it small purplish spots on the eighth, ninth, tenth, 

 and eleventh segments ; on the undersurface are paler sub- 

 spiracular and central lines ; legs light red. In habit quiet, 

 generally resting in an extended rigid posture. (Rev. J. 

 Hellins.) 



July and August on Callv/mt r/fJ;/a/'is, Er'uu tdrallii. Salb: 

 oil I mud in, S. caprayi, and birch ; in confinement especially 

 choosing hawthorn, and preferring the younger leaves or 

 those from succulent shoots. Feeding at night, remaining 

 upon the food-plant during the day. 



