270 



ELEMENTARY STUDIES IN INSECT LIFE 



FIG. 208. Digestive system of bae, magnified ten times (after Cheshire). A, 

 horizontal section of body ; 7p, labial palpus ; mx, maxilla ; e, eye ; dv, di\ dorsal 

 vessel ; v, ventricles of the same ; No. 1, No. 2, No. 3, salivary gland systems, 1, 2,3; 

 us, oesophagus ; pro. t, prothorax ; mesa, t, mesothorax ; meta. t, metathorax ; #, 0, 

 ganglia of chief nerve chain ; n, nerves ; hs, honey sac ; p, petaloid stopper of 

 honey sac or stomach mouth ; c. a, chyle stomach ; 6t, biliary or malplghlan ves- 

 sels ; si, small Intestine ; ?, lamellae or gland plates of colon ; H, large Intestine. 



