SCIENTIFIC CULTIVATION OF BRITISH BEES. 149 
MELITTA. 
* / Family a. 
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APIS. 
/Family a. 
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Subsection a. 
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Family a. 
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33 
33 
a. 
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8 . 
a. 
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Family 1. 
2 . 
33 
Mr. Kirby could scarcely have considered that there 
were more than two series of equivalents in this scheme, 
the first being the great division into the two genera; 
and the second, the final division, where his analysis 
terminated in his families, which, with some further 
slight subdivision, as shown above, constitute our pre¬ 
sent genera. The synthetical combinations which the 
arrangement presents, as we ascend from his families, 
result from an almost arbitrary selection of characters 
