65 LEPIDOPTERA. 



and run into shades, as lias been previously noticed in the 

 so-called " nvM.ferana''' form of Fcnthina varic;/ana. In the 

 Scottish Isles specimens are common in which the ground- 

 colour is clear white, while the markings ar*? rich in colour 

 and sharply defined. 



On the wing in June and July, and as a scarce and 

 partially second generation in August and September. 



Larva very active, wriggling violently when disturbed ; 

 cylindrical, dull pale greenish grey, the spots hardly visible 

 but having distinct hairs ; head light brown ; jaws blackish ; 

 dorsal plate black ; anal plate of the body colour. 



April and a second generation in June, on Statice armerict 

 (common thrift), the first brood feeding in the young shoots, 

 the second brood partly in the flowers ; sometimes making 

 a silken tube among the leaves, but feeding still on the heart 

 leaves. 



Pupa light olive brown, spun up among the leaves of the 

 thrift, close to the eaten shoots ; or in the second brood, in 

 the eaten-out flower heads. 



This very pretty and attractive species follows its food- 

 plant, the common thrift, not only upon rocks and cliffs at the 

 seaside, but also upon salt marshes and sand hills, the banks 

 of rivers and any rough ground upon which this plant 

 abounds. It may occasionally be disturbed by the footstep, 

 but is unwilling to stir much in the daytime, though active 

 and lively upon the wing towards dusk. Always confined to 

 the CDast and most plentiful on rocky portions thereof, but 

 found on the lower banks of the Thames in Kent and Essex 

 as well as on the outer coasts, and in Sussex, Hants, with the 

 Isle of Wight, Dorset, Devon, Cornwall, Suffolk, Cheshire, 

 Lancashire and plentifully in the Isle of Man ; in Wales at 

 Dolgelly and probably all round that coast, certainly common 

 in Pembrokeshire. Also on the coasts of Scotland to the 



