144 ENIGMAS STILL UNANSWERED. 



found by Mr. Wilkinson, of Scarborough, at the end ofl 

 September, feeding in the flowers of the heath." Mr. Wil-! 

 kinson did not succeed in rearing these; he has again col-i 

 lected a supply of the larvee this autumn, and will try again 

 to rear them. 



88. " A Nepticula larva in birch leaves, found by Mr. | 

 Healy, Mr. M' Lachlan and others, in October. The mine ; 

 is contorted, with a thread of black excrement. A peculiarity i 

 of the mine is, that when the larva is young, it does not eat \ 

 jhe whole thickness of the leaf, so that the first portion of the | 

 mine remains green." ' 



90. " A Nepticula larva in the leaves of Agrimonia 

 Eupaforia, found by Mr. Healy, in October, near Croydon, i 

 The mine of this eventually forms a complete blotch. This i 

 is the third species which feeds in the Agrimoniaj and pos- 

 sibly there are yet others." : 



