194 



HALF-HOURS IN THE GREEN LANES. 



the middle. Lastly, let us draw attention to the 

 common markings on the leaves of the hawthorn, 

 which are similarly caused by the larvae of another 

 species of tinea, called Coleophora nigricella. In May 

 and June you may see the leaves of the hawthorn dis- 

 figured by large brown blotches, caused by the voracity 



Fig. 136. 



Mined Hawthorn Leaf, and Larva of Coleophora niyricel'a, natural 

 size and magnified. 



of this species. On some leaves you may see a small 

 brown, roundish object, about half an inch in length. 

 This is the portable habitation, or case, formed by 

 the larva that has mined the leaf. It is not con- 

 structed until the larvae is nearly full grown, and it 

 is then used for purposes of retreat when alarmed. 



Whilst speaking of the hieroglyphic markings on 

 leaves, one is naturally led to inquire concerning 



