LEPIDOPTERA. 



209 



The Lime-tree Hawk-moth (Smerinthus tilice, Fig. 196) has its 

 upper wings grey with some shades of green, and moreover, in the 

 middle of the wing an irregular band of a brownish green colour. 

 The thorax, covered with hairs, is grey, with three green longitudinal 

 bands. The abdomen is also grey. The moth flies heavily after 

 sunset, and is found on the trunks of trees during the months of May 

 and June. The larva (Fig. 197) is glaucous green dotted with yellow, 

 and marked on each side with seven oblique lines of the same colours. 



Fig. 199. Poplar Hawk-Moth (Smerinth 



Its wrinkly horn is blue above and yellow below. It is found on the 

 lime and the elm. It buries itself at the foot of the tree on which it 

 has fed to change into a chrysalis without making a cocoon. 



We will content ourselves by here giving drawings of two other 

 species of the same genus : the Eyed Hawk-Moth (Smerinthus ocellatus, 

 Fig. 198), which is not rare during the months of May and some- 

 times August, the caterpillar of which lives on the leaves of willows, 

 poplars, and fruit-trees ; and the Poplar Hawk-Moth (Smerinthus 

 populi, Fig. 199), whose caterpillar (Fig. 200) lives on the poplar, 

 the aspen, and sometimes on the willow and birch. 



The division of Bombycina contains the largest of moths, and at 



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