4-02 SYSTEM OF INSECTS. 



nuna. This brings us down to the lowest group formed 

 out of genera and subgenera : or the family, which from 

 its principal genus is named Brachinidte, and which 

 leads us to the genus Brachinus, and the subgenus Aptini. 

 Thus we get the following scale, expressing every di- 

 vision of an Order, till we arrive at its lowest term, or 

 the species that compose it. 



SUBORDER 



Ch ilopodimoi % ph ha M c L. 

 SECTION 



Adepkagana Clairv. 

 SUBSECTION 



Geodephagena M C L. 

 TRIBE 



Eutrech'ma 



SUBTRIBE 



Amauroua 

 STIRPS 



Truncipennvma Latr. 

 FAMILY 

 Brachinidce 



GENUS 

 v Brachinus 



SUBGENUS 

 Aptini. 



In the construction of this scale I have endeavoured 

 to steer clear of being led by any system, but, with the 

 exception of the Suborder, which I assume, to resolve it 

 into natural groups gradually decreasing in value, or 

 tending to the lowest term, which appear all of them to 



