LEPIDOPTERA. 



201 



are extremely long. The narrow wings have a long, 

 delicate fringe of hairs, — a characteristic of the more 



Fig- 153- 



generalized moths. The resemblances existing between 

 this insect and the caddis-fly of the Trichoptera have 

 already been men- 

 tioned.^ Fig. 153, 

 a ; a represents the 

 caterpillar ; b, its 

 case made of wool 

 or hair, and often 

 times of cotton, the 

 color of the case 

 differing with that ^ ^ 

 of the material Fig. 153, a. 



1 See p. 178. 



