l'l;<)TK< TIVK DEVICES 



Cl 



of generations until \vc have the present form. Thus 

 natural selection slowly, yet potently, shapes the destiny 

 not only of inserts, but of all animals and plants. 



MIMICKED FORMS. Insects with powers of defense. From photographs. 



<*>.': 



FlG.51. 



The honey-bee. 

 (Apis mellijii-ii.) 



FIG. 52. 



A wasp. 



(Vespa occidrntdlix.) 



FIG. 53. 



A bumblebee. 

 (Bomb its Howardi.) 



MIMICKING FORMS. Insects without powers of defense ; protected by their re- 

 semblance to dreaded insects. From photographs. 



FIG. 51a. 



A fly. 

 (Eristalis latifrons ) 



T 



FIG. 52a. 



A beetle. 



(Glytus marginicollis.) 







,. ' 



FIG. 53a. 



A fly. 

 (Volucelld iTi-i-tn i 



