THE CLOUDED YELLOW BUTTERFLY. 149 



Its breadth, in England, rarely exceeds two inches ; 

 but, influenced by a warmer climate, they are found 

 of a much greater size. Northern countries do not 

 seem to be so congenial to the growth of papiliona- 

 ceous insects, as more southerly latitudes. In Britain, 

 the Papilio hyale, is considered rare, although it has 

 occasionally been abundantly found in Kent and the 

 neighbouring counties. In the year 1793 it abounded 

 in these districts. The fly is to be taken in autumn, 

 but seldom after August. 



