SI 



MICROPTERYX MANSUETELLA. 

 Plate C. Figure 14. 



The Situations where it is found are woods. 

 The perfect insect appears in May and June. 



MICROPTERYX ALLIONELLA. 

 Plate C. Figure 15. 



Localities for this species are Scarborough, Birming- 

 ham, etc. 



The situations where it is found are woods. 



The perfect insect appears in May and June. 



The caterpillar is whitish with a greyish green line on 

 the back, the head whitish with brownish spots on each 

 side ; the three hind segments have a reddish tinge ; 011 

 the fifth is a slight protuberance on the side. 



The date of the appearance of the caterpillar is in June, 

 June 27. 



It feeds on the birch. 



MICROPTERYX THUNBERGELLA. 

 Plate C. Figure 16. 



Localities for this species are Lewes, Market Harbo- 

 rough. 



The situations where it is found are among beech trees. 

 The perfect insect appears in June. 



