402 LEPIDOPTERA. 



with dark brown ; segments plump and deeply cut ; second 

 segment rather long, light yellow-green, very minutely 

 freckled with raised dark brown dots ; body pale glaucons- 

 green, rather darker on the back than on the sides ; a thin 

 faint whitish dorsal line is just visible; besides the ordinary 

 raised dots, there are along the sides three rows of minute 

 blunt cones, pale green tipped with dark bi-own, and each 

 having five or six radiating curved whitish bristles ; spiracles 

 minute, round, green, ringed with dark red ; the raised dots 

 on either side of them have nine or ten bristly hairs each. 

 (W. Buckler.) This larva is exceedingh^ like the surface on 

 which it rests, its hairs closelj' resembling the white pubes- 

 cence of the plant. 



May to June or July, but apparently feeding from tlie 

 previous autumn, on Marr\ibinm vulr/arc (White horehound), 

 feeding on the young leaves. Mr. South says that it rests on 

 the upper surface of the leaf in damp or dull weather, but 

 hides beneath it when the sun shines. 



PuP.\ green with whitish warts and hairs, the wing-cases 

 paler green, thickly studded with short whitish bristles along 

 the edges. Attached by the anal hooks to the upper surface 

 of a leaf of the food-plant. (R. South.) Also closely 

 resembling the hairy whiteness of the plant. 



The moth is sluggish in the daytime, hiding closely 

 among its food-plant, but flies at night. It is exceedingly 

 local — as is its food-plant — and confined mainly to chalk 

 districts. It is not, however, limited to those localities in 

 which the plant grows fiid, but equally aftects it in gardens 

 on the same soil. It is found in Kent, Sussex, Hants, with 

 the Isle of Wight, Dorset, Somerset, Suffolk, Herts, and 

 Bewdley Forest, Worcestershire. This seems to be the extent 

 of its distribution in these Islands. Abroad it is spread 

 abroad over Central and Southern Europe and Northern 

 Africa. 



