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The date of the appearance of the caterpillar is in 
April and May. 
It feeds on a variety of trees. 
T^DISCA BILUNANA. 
Plate LXXXIX. Figure 20. 
The perfect insect appears in June. 
The date of the appearance of the caterpillar is in April. 
It feeds on the catkins of the birch. 
PiEDISCA OPPRESSANA. 
Plate XC. Figure 1. 
Localities for this species are in Epping Forest. 
The situations where it is found are woods. 
The perfect insect appears in June. 
PiEDISC A CORTICANA. 
Plate XC. Figure 2. 
Localities for this plentiful species are Brighton, eta, 
etc., etc. 
The perfect insect appears in June and July. 
It feeds on the oak and the hawthorn. 
