26 



Descriptive Zoology. 



At night they settle on trees, hanging in great clusters 

 from the leaves. It is not easy to see them at such times. 



FIG. 17. STRUCTURE AND DEVELOPMENT OF THE MONARCH BUTTERFLY. 



From Hyatt's Insecta. 



They look like dead leaves. In the morning, when they 

 are chilled, they may be taken in a net. 



