OR, MANUAI< OF THB APIARY. 



81 



The nerves of insects are in no wise peculiar, so far as 

 known, except in position. Each nerve .consists of a bundle of 

 Cbers, some of which are sensitive, and some motor. As in 



Fig. 27. 



Diagram showing Jnter?ial Organs of See, (modified) , from. Oowan. 



^Head. ig Supra oesophageal ganglia. 



T Thorax.- gg Ganglia on nerve cord. 



A Ahdomen. as Air sacs. 

 6 Brain. tt Tracheas. 



Ji Kectum. mt Malpighian tubules. 



hs Honey-stomach. 



s Stomach, 

 m Stomach-mouth. 



i Ileum. 

 r,g Rectal glands. 



our bodies, some are knotted, or have g-ang-lia, and some are not. 

 The main nervous cord is double, and has several enlarge- 

 ments (Fig-. 27, 28) or ganglia. It runs along the under or ven- 



