TRTF/D.-E. 267 



obliterated, and occasionally both. Some very beautiful black 

 forms are taken in the South of Ireland ; indeed both forms 

 are generally distributed and co-existent in that country, and 

 very pale clearly marked specimens are found at Armagh and 

 in Down. Mr. Adkin has reai'ed various forms, ranging from 

 grey to nearly jet-black with but one white spot, fi'om eggs 

 laid by one of the dark forms from that country. He has 

 also curious pale small specimens from the Scilly Isles. A 

 specimen in Mr. F. J. Hanbury's collection, and taken in 

 Essex, has the base and hind marginal space blackened, the 

 middle of the wings grey, and is very pretty. 



On the wing in June and July, and occasionally, as a second 

 generation, in August or September. 



Larva stout, tapering to the head from the fifth segment, 

 which is stout and almost humped, twelfth segment also 

 broadly humped, head rounded, highly polished ; body hairy, 

 the hairs arranged in transverse rows of bunches which arise 

 from the usual spots ; lateral spots raised. Ground colour 

 black or blackish, the back velvety black : a series of couples 

 of red dorsal spots, two on each segment, the hinder of the 

 pair transversely placed ; these spots are obsolete on the last 

 two segments and less conspicuous on the second and third; 

 on the fourth, and from the sixth to the twelfth is a series of 

 conspicuous wedge-shaped silvery- white subdorsal blotches, 

 rather obliquely placed, and with the apex behind ; spiracles 

 distinct, white ; below them a conspicuous stripe from the 

 fifth to the twelfth segment composed of A-shaped primrose 

 markings, alternating with reddish blotches ; hairs pale 

 reddish-brown, those on the fifth segment greyish-brown ; 

 head and legs black ; under surface dark greyish or purplish- 

 brown. (0. Fenn.) Dr. Chapman has found, at Llandudno, 

 a curious variety of this larva- — ^" ground colour light salmon, 

 with some darker marblings, lateral line white, interrupted 

 by a salmon-coloured subspiracular tubercle ; some dark 

 marks between the dorsal yellow dashes and subdorsal white 



