158 
BRITISH BEES. 
differences in the formation of the tongue, these are cor¬ 
roborated by differences in other organs, and the general 
distribution, as well as the special combinations, all re¬ 
sult from natural characteristics. 
The simplicity of the arrangement thus effected is 
very striking; and we thus find all the bees having 
similar habits, and with a similar structure united to¬ 
gether by it in distinct groups. 
I will here insert my scheme, and exhibit why and 
in what it differs from those of my predecessors; and, 
where necessary, I shall append such observations upon 
the several methods extant, as will sufficiently show the 
necessity, and vindicate the introduction of a new one. 
Family MELLICOLLIGERiE (Honey-collectors). 
Subfamily 1. ANDRENID2E (Subnormal Bees). 
Section 1. With lacerate paraglossce. 
Subsection a . With Emakginate Tongues. 
Genus 1. Colletes. 4 
„ 2. Prosopis. ;r 
Subsection 6. With Lanceolate Tongues. 
Genus 3. Sphecodes. 't 
,, 4. Andrena. A4 
,, 5. Cilissa. z. 
Section 2. With entire paraglossce. 
Subsection c . With Acute Tongues. 
Genus 6. Halictus. 
„ 7 . Macropis. / 
„ * 8. Dasypoda. / 
