lO 



TRANSFORMATIONS OF INSECTS. 



epidermal cells, whose predecessors were infinitely more simple 

 and less elegant in the immature insect. 



THE CATERTILLAR OF SpJiinx ligustri (THE PRIVET HAWK MOTH) 



It is the essential peculiarity of articulate animals to be divided 

 into segments or rings, and these somites, as they are sometimes 



THE MOTH OF Sphinx ligustri. 



called, can be traced in the embryo within the d'g^, in the lar\'a, 

 nymph, or chrysalis, and in the perfect insect. Huxley distin- 

 guished six segments in the head of the young insect, and he 



