166 



The caterpillar is yellowish-grey, with a line of dark 

 grey along the back, and a yellowish -white one on the 

 sides. 



The date of the appearance of the caterpillar is in 

 April and May. 



It feeds on the hedge wound-wort, (Stachys sylvatica). 



The chrysalis occurs beneath the ground. 



ACIDALIA IMITARIA. 

 SMALL BLOOD VEIN. 



Plate XXIV. Figure 10. 



THIS insect measures an inch or a little over in width. 



Male : fore wings dull reddish-yellow. The first line is 

 pale grey and bent; second line also grey and waved; third 

 line dark grey, slender, and waved; central line dark 

 blackish-grey, slanting inwards and 'followed by a lighter 

 shade; central spot black but indistinct, and in some 

 specimens not appearing at all. Hind wings with a 

 double band before the central dot, and followed by 

 another slender dark and waved streak; the fringe red. 



Localities for this species are York, Scarborough, 

 Newnham, Humberstone, Barnstaple, Birkenhead, Lewes, 

 Bristol, Cambridge, Brighton, Darlington, Lower Guiting, 

 Manchester, Halton, Lyndhurst, Pembury, Stowmarket, 

 Worthing, Tenterden, Exeter, Kingsbury. 



The perfect insect appears in July and the beginning of 

 August. 



