Insecta. 31 



number of related moths whose larvae roll leaves, and are known as 

 "leaf rollers." The ''measuring worms" are larvae of moths. Last, 

 but not least in importance, is the clothes moth, which departs from the 

 usual custom of living on vegetable food. 



Mimicry. The viceroy butterfly, which is sometimes 

 eaten by birds, is protected by its resemblance to the ined- 

 ible monarch butterfly. This is a case of mimicry. 



FIG. 25. THE MONARCH BUTTERFLY. 



FIG. 26. THE VICEROY BUTTERFLY, WHICH MIMICS THE MONARCH. 



From Kellogg's Zoology. 



General Characters of Lepidoptera. The moths and 

 butterflies have two pairs of scaly wings, which are large 

 and slow in motion. The parts of the body are distinct. 



