LEPIDOPTEBA. 



211 



dotted with black. At its extremity is a yellow horn, curved 

 back like a hook, and covered with tubercles. The head is green 

 and marked laterally with a black stripe. It lives chiefly on the 

 potato, and the Lycium barbarum, sometimes called the tea- tree, 



Fig. 195. Chrysalis of the Death's-head Hawk-moth. 



a shrub belonging to the Solanacece. It buries itself in the earth 

 to change into a chrysalis (Fig. 195) of a bright chestnut brown. 



We will mention still further, in the family of the SphingidtB, 

 three species of the genus Smerinthus, which fly heavily and by 

 twilight. 



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

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



w 



Fig. 196. Lime Hawk-moth (Smerinthus tilice). 



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

 The thorax covered with hairs is grey, with three green longitu- 



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