299 
The perfect insect appears in May, July, and August 
—May 28. 
The date of the appearance of the caterpillar is in 
June and July. 
It feeds on the lower leaves of the wormwood 
(Artemisia vulgaris ), and the sea wormwood (Artemisia 
mar luma'). 
PTEROPHORUS TEPHRADACTYLUS. 
Plate CXXXII. Figure 17. 
Localities for this species are Clovelly, Llanferras, 
Bangor, Grange in Cartmell, Witherslack, Humphrey 
Head in the Isle of Man. 
The perfect insect appears in June and July. 
The caterpillar is greenish yellow when young; 
afterwards whitish green. 
The date of the appearance of the caterpillar is from 
September to April and May. 
It feeds on the golden rod (Solidago virgaurea). 
PTEROPHORUS OSTEODACTYLUS. 
Plate CXXXII. Figure 18. 
Localities for this species are Scarborough, Bangor, 
Wokingham, Llanferras, Hawkshead, Bristol, etc. 
The perfect insect appears in June, July, and August. 
The caterpillar is light drab, striped, sometimes dark, 
with a darker line along the back, the second segment 
with two darker marks. 
