A SHEEP IN WOLF'S CLOTHING 45 



the other in a ferocious fashion. Mr. Scudder saw two 

 of these caterpillars meet, and each began a great 

 swinging of the head, hitting the other several times 

 during this family jar. When fully grown the cater- 

 pillar, if disturbed, moves his head around in a circle on 

 the leaf and " gnashes his teeth " in fury. To one who 

 understands him this is a very funny bluff: ; for he is 

 not only absolutely harmless, but he is also veiy fastid- 

 ious about his food and could not be in- 

 duced to take a bite out of an assailant. 



When the Viceroy changes to a chrysa- 

 lis he is almost as grotesque in form as 

 when he was a larva ; for he now wears 

 a large excrescence in front that bears a 

 resemblance to a Roman nose (Fig. 23). Fig.23. "Anun- 



" _ even morsel. 



The obvious use of this protuberance is to 



convince a bird of the utter futility of attempting to 



swallow such an uneven morsel. 



About a month after the egg is laid the adult insect 

 appears, and on gorgeous wings sails off to join its 

 fellows; for this is a social butterfly and is fond of 

 dancing about in the air with its comrades. 



Very soon are the eggs laid for another brood. But 

 the history of an individual of this generation is very 

 different in some particulars than the one just related. 

 After a larva of the second brood hatches, he feeds, as 



