170 



CHAPTER IX. 



A TABLE, EXHIBITING A METHOD OF DETERMINING 

 THE GENERA OF BRITISH BEES WITH FACILITY. 



THE following table is constructed exclusively to facili- 

 tate, by the most obvious characters, the recognition of 

 the several genera into which the family is divided ; it 

 will, however, be incumbent upon the learner to use 

 some diligence in order to acquire an accurate percep- 

 tion of their distinguishing characteristics. 



By the present extremely artificial plan the systematic 

 sequence is disturbed ; but the numbers, which will be 

 found appended to the names in the table, will show 

 their orderly succession. 



The natural generic character which precedes the ac- 

 count of each genus in the next division of the work will 

 give the reason, by comparison, of the order in which 

 "system" arranges them, and which being based mainly 

 upon the differences of the trophi, although, conjunc- 

 tively with other characters, the trophi must necessarily 

 be studied for its explanation, their description in the 

 description of the part of the imago is consequently re- 

 ferred to. 



Did we know exactly the uses of the component parts 



