2. Bombus Lapponicus, ♀.
3. Bombus sylvarum, ♀.
4. Apis mellifica, ♂ ♀ ⚲.
BRITISH BEES.
(HYMENOPTERA.)
CHAPTER I
PRELIMINARY OBSERVATIONS,
COMPRISING GENERAL REMARKS UPON THE USES OF BEES IN THE
ECONOMY OF NATURE; THEIR DIVISION INTO SOCIAL AND SOLITARY;