Bui. 48, Div. of Entomology, U. S. Dept. of Agriculture. 



Plate II. 



Fig. 1.— Work of the Lawson's Cypress Bark-beetle in Twigs of Living Trees. 



a, Burrows at base of twig; b, b, wounds covered with gum; c, deformed twig; d, wound where 



twig has died and fallen 



? - " 6 



Fig. 2.— The Lawson's Cypress Bark- Fig. 3.— The Redwood Bark-beetle 

 beetle: Adults, Male and Female. (Phlceosinus sequoi/e Hopk.): 



Adult, Enlarged. 



(From Bui. 38, Bureau of Forestry, U. S. Dept. of Agriculture.) 



