58 ORDERS OF INSECTS. 



or Spring-tails, which are also mandibulate, are fur- 

 nished with two or more bristles at the tail. 



As this little book is intended especially as an in- 

 troduction to the study of British Entomology, and 

 the principal English writers upon this branch of 

 science usually adopt a system very similar to that of ' 

 which a sketch has just been given, this mode of clas- 

 sification will be adopted in the following pages, espe- 

 cially as, from its dealing only with the characters 

 presented by Insects in their perfect state, it is per- 

 haps rendered more intelligible to the beginner ; but 

 for my own part, I must confess that I think, the 

 adoption of the metamorphosis as the foundation of 

 the arrangement of Insects, leads to a more philoso- 

 phical result. To give the reader an opportunity of 

 judging for himself, I have subjoined a tabular view 

 of the arrangement of the orders thus obtained : — 



Section I. Metabola. 

 Order I. Coleoptera. 

 II. Strepsiptera. 



III. Hymenoptera. 



IV. Lepidoptera. 

 V. Diptera. 



VI. Aphaniptera. 



Section II. Hemimetabola. 

 Order VII. Neuroptera. 

 VIII. Orthoptera. 

 IX. Physopoda. 

 X. Rhynchota. 



Section III. Ametabola. 

 Order XI. Anoplura. 

 XII. Mallophaga. 

 XIII. Thvsanura. 



