THE LOCALITY SYSTEM. 383 



c, Wing-cases hard and crustaceous, not over- 

 lapping, covering the under wings ; mouth 

 with teeth — beetles. 

 3. Wings two, without wing-cases : — 



a, Two membranaceous wings, and two poisers 

 behind these ; mouth with a tongue, but no 

 teeth — flies, gnats, &c. 



6, Two membranaceous wings in the male, but 

 no poisers, tongue, nor teeth ; no wings in 

 the female, but a tongue in the breast — 

 vine-louse, &c. 



II. Wingless Insects. 



1 . Undergoing transformation : — 



With six legs, and the mouth having a tongue — 

 fleas. 



2. Undergoing no transformations : — 



a, With six legs, the head distinct from the 

 trunk — white ants, &c. 



6, With eight or ten legs, and the head not dis- 

 tinct from the trunk — spiders, crabs, &c. 



c, With fourteen or more legs, and the head 

 distinct from the trunk — centipedes, wood- 

 lice, &c. 



THE LOCALITY SYSTEM. 



The next system, in order of time, reckoning from 

 the period of Aristotle, is taken, not from the struc- 

 ture of insects, but the places they frequent. We 

 owe the first sketch of an arrangement on this prin- 

 ciple to the great naturalist of Italy, Ulysses Aldro- 

 vand, whom it has been the recent fashion to decry 

 as a collector of fables; but whose voluminous works, 

 written in Latin, and never, we believe, translated, 

 must always be consulted with admiration by every 

 genuine inquirer, as a mine of information altogether 

 miraculous as the production of one man. 



