Caterpillars. 



189 



by weaving other threads, attached to the centre of the roll 

 and the plane of the leaf, upon which ii throws the weight 

 of its body. This, it will be readily seen, is a somewhat 

 complicated effort of mechanical skill. It has been minutely 

 described by M. Reaumur ; but the preceding representation 

 will perhaps make the process clearer than a more detailed 

 account. 



This caterpillar, like those of which we have already 

 spoken, devours all the interior of the roll. It weaves, 

 also, in the interior, a small and thin cocoon of white silk, 

 the tissue of which is made compact and close. It is then 

 transformed into a chrysalis. 



The caterpillars of two of our largest and handsomest 

 butterflies, the painted lady (Cynthia cardui, STEPHENS), 

 and the admiral, or Alderman of the London fly-fanciers 



Nests of the Hesperia malva;, with Caterpillar, Chrysalis, and Butterflies. 



(Vanessa atalanta), are also leaf-rollers. The first selects 

 tho leaves of the great spear-thistle, and sometimes those 

 of the stemless or star-thistle, which might be supposed 



