november, 1861. 165 



September. 



Aspidisca ostrya>foliella. Middle to middle of Oct. Leaves 



of iron-wood. 

 Nepticula virginiella. Early. Leaves of iron-wood. 



roscefoliella. Early. Leaves of dwarf wild rose. 

 Catastega timidella. Early. On oaks. 



? Hamameliella. Early to middle. Leaves of 

 witch-hazel. 



October. 

 Aspidisca ostryafoliella. 

 Coleophora carycefoliella. 

 Coryliella. 

 Viburniella. 

 Osti'yce. 

 Nepticula saginella. Early. Leaves of oaks. 

 Coleophora quercifoliella. Early. On leaves of oaks. 

 Nepticula platea. Early. Leaves of oaks. 



anguinella. Early. On leaves of oaks. 

 corylifoliclla. Very early. On leaves of hazel- 

 nut. 

 Coleophora pruniella. Very early. On leaves of wild 

 cherry. 



Coleophora. 

 Habits of the Larvce. 

 The young larvee feed either as miners in the interior of 

 leaves or in the interior of seeds. When a leaf-mining larva 

 has attained a certain age, it cuts out the two skins of the 

 mined place and constructs of it a portable case, which it 

 never abandons subsequently, except to construct a new one, 

 when its increase in growth demands the change. In feeding 

 the larva attaches its case to a leaf and bores into it between 

 its skins, eating out a transparent patch, extending its body 

 from the case for this purpose, but quickly retreats into it 

 again if alarmed. Some of the seed-feeding species remain 



