INSECTA, A CLASS OF ARTHROPODS 

 G7MSS HOPPED 



195 



LP 



L. 1-AB.Run. 

 Mt. MANDIBLES. 



MX M AX I Ll_ AE . 



M.P. MAXILLARY -PALPI 

 L.P. LABIAL PAL.PI 



Lab. LABlUfl. 



Lob. 



FIG. 63. Grasshopper. 



Part I. Mouth Parts. 



The upper lip or labrum is a thin scoop-shaped organ, which helps to hold 

 food between the jaws. 



The mandibles or jaws, are very thick at the edge, sharply toothed and 

 operated by powerful muscles. They are dark brown in color and hard enough 

 to gnaw dry wood. 



The maxillae or accessory jaws are very complicated organs consisting of 

 two sharp hook-shaped parts backed by a sort of hood. These help in hold- 

 ing food and perhaps in chewing it, too. Back of the hood are the palpi, whose 



