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



Plate III. 



Fig. 1.— Yellow pine, showing condition of normal and blighted cone about 10 days after attack by 

 the cone Deetle: a, Normal cone; b, blighted cone; b', entrance hole made by cone beetle. Fig 2.— 

 Blighted yellow-pine cone with part of base removed to show form of girdle made by the initial 

 entrance of the cone beetle: a, Entrance; 6, point at which the adult turned to extend the egg 

 gallery into the axis of the cone. Fig. 3.— A portion of yellow-pine cone (near axis) opened to 

 show egg gallery of the cone beetle, enlarged: a, Egg gallery, showing packed sawdust of beetle; 

 b, egg; c, parent adult at terminus of egg gallery; d, immature seeds. Fig. 4.— Blighted yellow-pine 

 cone with portion of base and scales removed to show the girdle made bv the tunnel of the cone 

 beetle and general form of the egg gallery: a, Entrance; b, egggallery; c, parent adult. (Original.) 



Work of Cone Beetles in Cones of Yellow Pine. 



