THE BUTTON TORTRIX MOTH. 151 



the wings. In colour this is perhaps the most 

 variable of all the genus, more than thirty dis- 

 tinct varieties having been recognized, very- 

 many of which have been marked in different 

 catalogues as species. Variable as this Moth is, 

 it may generally be distinguished by the tuft of 

 white scales in the middle of the upper wings, 

 and the long streak of lighter colour along their 

 lower edge. 



The Moth appears in autumn. A figure of 

 this insect is given on Plate XL fig. 3. 



Next on our list comes the Bergmannian 

 ToRTRix {Dictyopteryx, or Croesia^Bergmanniana). 



Bergmannian Tortrix. 



This is a very pretty little Moth, the colour of 

 the upper wings being ochreous yellow, with a 

 decided gloss, and upon the hinder margin there 

 is a brown belt, with a number of tiny white 

 spots running through its centre. The hind- 

 wings are pale brown. This is rather a destruc- 

 tive insect in gardens, the caterpillars feeding upon 

 the rose, and affixing themselves to the leaves by 

 means of silken threads. The Moth is a very 



