20 



ZOOLOGY 



the Monarch in this country is the " Viceroy," Limenitis 

 archippus. This resemblance of the edible Viceroy to 

 the inedible, acrid Monarch, it is believed, is sufficient to 



FIG. 19. A, Kallima, the leaf-butterfly of the East Indies, flying; a, at rest. 

 B, Siderone, another leaf-butterfly, flying; b, at rest. 



deceive even the birds, and thus the Viceroy gains con- 

 siderable immunity from attack. This resemblance of an 

 edible to an immune species is known as mimicry. The 

 origin of protective resemblance and mimicry are both 



