REPTILES. 



299 



at the tip, like that of the American Monkeys; its under 

 surface is roughenH with small granulated papillce, as is 

 that of the toes aw, probably in order to the more deli- 

 cate perception of the surface grasped. The tongue 

 affords an analogy to the same organ in the Woodpeckers, 

 no less singular than that of the feet ; for, though ordina- 

 rily concealed within the mouth, it is capable of being 

 darted forward at its insect prey, and, being furnished 

 with a glutinous secretion, secures it by its adhesiveness. 

 A most extraordinary aspect is communicated to these 



Chameleon. . 



Reptiles by the structure and movements of their eves. 



