192 HALF-IIOUIfS IN THE GREEN LANES. 



From July to September, these ravages go on, each 

 species leaving its mark so characteristically that 

 the entomologist can immediately recognise its 

 presence. One of the little moths whose larva 

 may be thus traced is the LithocolUtis (Fig. 134), an 

 exceedingly small, but very delicately marked insect, 

 rts iarva is of a whitish colour, and many of them 

 pass their pupa state within the mined.-out skins 



Fig. 134. 



Oak Leaf mined by Lit/iocolletis, showing Larva inside. 



jf the dried leaf. In October, another species of 

 iarva is at work, which commences its gallery along 

 the mid-rib of the leaf, and then, after proceeding a 

 short distance in one direction, turns sharply round, 

 and works away by one of the radiating veins. 

 Tiiis species is the Nepticula bimaculella. Like a 

 species just mentioned, it lowers itself to the ground 

 when it has reached its mature larval condition, and 

 forms a cocoon in the soil, where 1t remains, in the 

 pupal state, nntil the following June. During that 



