Fig. 20T. 



Work of the round-head apple-borer, Saperda Candida. — a, piiiiciiire m wliich egg 

 is laid ; b, same in section ; e, hole from which beetle has emerged ; /, same in section; 

 g, pupa in its cell. 



Fk;. 2M2. 



Work of the locust-borer, Cylloic lo 



