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 w r e know exactly the uses of the component parts 
