64 



Muscles and Nerves, 



iited, though, as we should expect, they are concentrated 

 in the thorax and head. In insects of swiftest flight, like 



Nervous System of Drone ajter Duncan, 



the bee, the thorax (Fig. 15) is almost entirely composed 

 of muscles ; the esophagus, which carries the food to the 

 stomach, being very small. At the base of the jaws (Fig. 

 39) the muscles are large and firm. The number of mus- 

 cles is astounding. Lyonnet counted over 3,000 in a single 



