OF WASHINGTON. 115 



land States, and showed no tendency to spread. This year a 

 number of specimens were found in stomachs of nighthawks 

 shot near Denver, Colo., showing that the beetle must have 

 spread along the northern States to the Rocky Mountain 

 region. 



— Mr. Schwarz exhibited some photomicrographs made by 

 Mr. H. S. Barber of a species of Epimetopus (family Hydro- 

 philidse) from Hot Springs in Yavapai County, Arizona, show- 

 ing the hind tarsi 5-jointed, instead of 4-jointed as given in 

 various descriptions. The first joint is obscured by the long 

 fringe of stiff spines at the apex of the tibia. The illustrations 

 also show plainly the number and form of the antennal joints 

 and other more or less disputed structural characters. 



— Mr. Burke stated that he spent the summer of 1907 in- 

 vestigating the insect conditions in the national forests of Utah 

 and Oregon for the Bureau of Entomology. In Utah most of 

 the time was spent in the Uinta National Forest in the north- 

 central part and the Sevier National Forest in the south-central 

 part. The principal timber in the Uinta is the lodgepole pine 

 (Pinus murrayana) and the alpine fir (Abies lasiocarpa). 

 Dendroctonus ponderoscu Hopk. has been killing a number of 

 lodgepole trees for the last three or four years and is still 

 working. Scolytus suhscaber Lee. is killing the fir in the same 

 manner. The principal trees of the Sevier are the yellow pine 

 {Pinus ponderosa) and the fir {Abies lasiocarpa) . Dendroc- 

 tonus ponderosce has killed a number of the pines in the past, 

 but the trouble now seems over and there was no evidence of 

 fresh work. This Dendroctonus and approximatiis Dietz, con- 

 vexifrons Hopk., barberi Hopk., and valens Lee. attack light- 

 ning-struck and injured trees and prevent their recovery. The 

 Scolytus, above mentioned, kills the fir as in the Uinta and is a 

 destructive enemy of that tree. 



In Oregon the time was spent in the Imnaha National Forest 

 in the northeastern part. There Mr. Burke found the worst 

 depredations by forest insects that he has ever seen. The 

 principal trees are the lodgepole pine and the yellow pine. In 

 the last three years, on an area of over 100,000 acres, Dendroc- 

 tonus monticola Hopk., the mountain-pine beetle, has killed 



