LEPIDOPTERA. 
258 
London. The female (Fig. 234) is remarkable, as she has only 
the rudiments of wings, and only goes as far as the side of 

Fig. 234.—The Vapourer Moth ( Orygia antiqua), male and female. 
her cocoon. The caterpillar of the Orgyia pudibunda, 
called 
also the Hop Dog, attacks almost every sort of tree. 
When 






























































































































































































































































































































































































































































































Fig. 235.—Orgyia pudibunda. 
the state of the atmosphere favours their propagation, they appear 
in fearful quantities, and cause the greatest havoc. During the 
