THEORIES OF MIMICRY 



557 



these theories. These are the carnivora which bear anal stink-glands, 

 and, among insects, those armed with stings at their rear end. In the 

 first place, very few of these species wear the so-called badge conspicu- 



Fig. 7 shows the fundamental optically disruptive effect of pattern. Against 

 each background the bird loses that part of its form which matches it. 



ously near their weapon, or anywhere that would call attention to the 

 situation of such weapon. (Entomologists have been keen to cite any 



