Bui. 243, U. S. Dept. of Agriculture. 



Plate II. 



Fig. 1.— Showing stalks of beetle-killed sugar-pine cones after the cones have fallen from the 

 tree: a. Entrance holes, showing small pitch tube made by beetle. Fig. 2.— A beetle- 

 attacked sugar-pine cone opened to show tunnel and egg' gallerv of cone beetle: a, 

 Entrace; b, egg gallery; c, extension of egg gallerv to surface where adult emerges. 

 Fig. 3.— Blighted sugar-pine cone opened to show developing broods of cone beetle. 

 Larvre and pupce as found July 9, 1914. Fig. 4-.— Blighted susrar-pine cone opened to show 

 position of overwintering adults of cone beetle: a, Cone beetle adults. (Original.) 



Stages of Cone Beetles in Sugar-Pine Cones. 



