BUTTERFLIES. 



569 



unceasing war against the day-flying insects. When one is 

 captured, the dragon-fly retires to a tree, and there, seated 



THE EREBUS STRIX. 



on a branch, devours the body at its leisure. It is wonderful 

 the number of flies which these beautiful insects destroy. 

 When evening comes on they eagerly fly oft' to the chase, 

 amid the swamps and around the tree-tops, or wherever their 

 victims congregate. 



