131 



blackish spot on the upper margin ; second line also black- 

 ish-brown and coming from a blackish spot; central line 

 blackish-brown most distinct at the upper margin; but 

 all of these are frequently only partially continued across 

 the wing. Hind wings pale grey crossed by a faint dusky 

 line, and with a few dusky marks. 



Localities for this species are York, Scarborough, Bris- 

 tol, Pembury, Lyndhurst, Plymouth, Worthing, Brighton, 

 Newnham, Lewes, Manchester. 



The situations where it is found are woods. 



The perfect insect appears in May and the early part 

 of June. 



The caterpillar is of a reddish colour, with white spots 

 on the second, third_, and fourth segments, and larger 

 marks on the others. 



The date of the appearance of the caterpillar is in June. 



It feeds on the birch and the alder. 



The chrysalis is found among moss. 



GNOPHOS OBSCURARIA. 



DARK ANNULET. BROWN ANNULET. 



Plate XXI. Figure 5. 



THIS insect, some individuals of which are much darker 

 than others, measures from a little over an inch and a 

 quarter to an inch and a half in width. 



Male: fore wings blackish-grey; the first line a darker 

 shade and nearly straight; second line also darker, a little 

 waved and much jagged; central line only partly con- 

 tinued. Hind wings blackish-grey, with a central dark 

 spot pale in the middle. 



