Tech, Se- es lO, Part I, Bureau of Entomology, U. S, Dept. of Agriculture. PLATE XV. 



Work of Pissodes approximatus and P. nemorensis. 



A .—Work of 1'. apprnrimatus In bark, i?.— Work of P. apprniimatuf in bark and wood of sapling. 

 ('.—Work of r. ncmoTcnsis in bark. (Original.) 



