5. . I-: - 5 :?:: :- -." :- :-'s. 



Plate IV. 



Fio. 1. — Blighted yellow-pine cones adhering to limb. This shows the position in which the 

 majority of the yellow-pine cones are found. S ear Tie terminal are shown three 1913-14 

 cones, two of them killed by the cone beetle. Farther back on the limb are the cones killed 

 in 1912. Fig. 2. — A whorl of four yellow-pine cones, three of them killed by the cone beetle. 

 The upper cone is normal. This shows the comparative sizeof the blighted and normal cones. 

 .—A yellow-pine cone opened to show condition of developing brood of the cone 

 beetle. This brood, on June 20. 1914, consisted of both larva? and pups. (Slightly enlarged.) 

 ~. — a. Blighted cone as it appears in overwintering condition: b, blighted cone opened to 

 show damaged seeds and position of overwintering adults; &', overwintering adults. (Original. ) 



Work of Cone 3eet_es in Cones of Yellow Pine. 



