BEE MANUAL. 51 
when in a dysenteric condition, and why mating only occurs on the 
wing.” 
From this sketch of the general features of the bee’s struc- 
ture I shall now proceed to notice the separate parts more 
particularly appertaining to the Apis mellifica, commencing 
with 
THE HEAD. 
Within the small limits of a bee’s head there are contained 
several important organs, some of them of a very complex 
nature. These are—the compound eyes; the simple eyes, or 
stemmata; the mouth and its appendages ; and the antenne. 
The following engraving shows a front view (on a greatly 
magnified scale) of a worker bee’s head :— 
Fig, 13. HEAD OF WORKER BEE, 
a. Antenne; b. Compound eyes; c. Jaws; d. Maxille; e. Lateral 
palpi; f. Ligula, or tongue ; g. Stemmata. 
