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GRACILLARIA SEMIFASCIELLA. 
Plate CXYI. Figure 18. 
Localities for this species are Scarborough, Brighton, 
Mickleham, Whittlebury, and near Bristol. 
The perfect insect appears in September and October. 
The caterpillar is pale transparent green, with a dark 
green line along the back ; the head pale reddish brown. 
The date of the appearance of the caterpillar is in 
July. 
It feeds in cones on the leaves of the maple. 
GRACILLARIA POPULETELLA. 
Plate CXYI. Figure 19. 
Localities for this species are Lewes, Worthing, Birch 
Wood. 
The situations where it is found are among poplar 
trees. 
The perfect insect appears in September. 
The date of the appearance of the caterpillar is in 
July. 
It feeds on the aspen, the poplar, and the birch. 
