328 



ANIMAL BIOLOGY 



defense, such as poison glands and formidable jaws, or special 

 secretions which render them unpalatable. Moreover, what is 

 still more interesting, many animals possessing this protective 

 conspicuousness, which renders them easily identified and adver- 



Fig. 212. — A, Walking-stick Insect on a twig; B, larva of a Geometric! 

 Moth resting extended from a twig. (Modified, after Jordan and Kellogg.) 



tises that they are to be avoided by their foes, are frequently 

 'mimicked' in color pattern and form by defenseless creatures. 

 Thus commonly associating with the various species of Bees hover- 

 ing about flowers are defenseless Flies which are so bee-like in 

 appearance that they are usually mistaken for Bees, and avoided 



