The Vegetarian Insects 



of the cognate species. If they are related 

 through a common ancestry, it is absolutely 

 impossible to understand why, of our two 

 Capricorns, one is allotted the oak and the 

 other the hawthorn and the cherry-laurel; 

 why, of our three Saperdae, the first demands 

 the black poplar, the second the elm and the 

 third the dead cherry-tree. This gastric in- 

 dependence loudly proclaims independence 

 of origin. And simple common sense, not 

 always welcome to the adventurous theorists, 

 is of the same opinion. 



237 



