ADAPTATIONS 



293 



broad chisel-like incisor teeth for cutting off the foliage, 

 and teeth of very similar form are developed in the dif- 

 ^ ferent groups of plant- 



eating fishes. Molar 

 teeth are found when it 



FIG. 159. Scorpion, showing the special devel- 

 opment of certain mouth parts (the maxil- 

 lary palpi) as pincer-like organs for grasp- 

 ing prey. At the posterior tip of the body 

 is the poisonous sting. 



FIG. 160. Head of mosquito (fe- 

 male), showing the piercing 

 needle-like mouth parts which 

 compose the "bill." 



is necessary that the food should be crushed or chewed, 

 and the sharp canine teeth go with a flesh diet. The 

 long neck of the giraffe en- 

 ables it to browse on the 

 foliage of trees in grassless 

 regions. 



Insects like the leaf- 

 beetles and the grasshop- 

 pers, that feed on the 

 foliage of plants, have a Flo . 161 ._ Thepra - lng . horae( ^ Wwith 



pair Of jaWS, broad but fore legs developed as grasping organs. 



