Drone Peculiarities. 101 
Landois showed many years since, that the hum of bees 
and other insects, was due first to vibrations of wings, sec- 
ondly to vibrations of the abdominal rings and, thirdly, to 
what he styled true voice in the thoracic spiracles, where 
there are cavities which he thought were voice cavities, 
He thought the humming tone of bees and other insects, 
came from the spiracles. The drone’s flight is more heavy 
and lumbering than that of the workers. Their ligula (Fig. 
8),labial palpi and maxilla—like the same in the queen bee— 
Fic, 30. 
Fic, 29. 
ee 
Oe 
LF 
‘ Part of Leg of Drone, magnified, 
Drone Bees, magnified, 
are short, while their jaws (Fig. 42, @) possess the rudi- 
mentary tooth, and are much the same in form as those of 
the queen, but are heavier, though not so strong as those 
of the workers. Their eyes (Fig.S), are very prominent, 
meet above, and thus the simple eyes are thrown forward. 
