272 Report or THE DerparTMENT OF ENTOMOLOGY OF THB 
The most extensive injury was in the Crawford and Reeves 
Favorite orchards. In these orchards nearly every tree was 
infested to an equal or greater extent than the piece of bark 
shown in the photograph. The Globe orchard was of especial 
interest as it had become-infested in one corner from a nearby 
brush pile, in which the beetles had been breeding, and the 
rapid spread of the insect through the orchard was plainly indi- 
cated. 
Character of the channels in the bark of the trunks and lower 
limbs. Feeding habits of the beetles—On September 20, pieces of 
bark from a number of the infested peach trees were examined. 
Probably owing in part to recent rains the sap was very soft. 
Comparatively few beetles could be found, and judging from 
the lack of dust, only an occasional one had been recently at 
work. Pieces of bark containing beetles were brought to the 
laboratory, some of them allowed to dry and others were kept 
moist for a few days. It was very noticeable that as soon as 
the bark became somewhat dry the beetles began feeding, while 
there was very little evidence of activity on the part of the 
beetles in the moist pieces. As soon as the pieces that had 
been kept moist were allowed to dry the beetles began to work. 
All of the mines in the bark examined September 20 were very 
irregular but with few exceptions, short. 
In October the orchard was again visited. At this time the 
bark was comparatively dry, and most of the sap had dried 
down until quite brittle. All over the infested areas the red 
dust was in abundance, and when the bark was cut away the 
beetles were found at work making new galleries or extending 
the old ones. The galleries ran in all directions but very few of — 
them reached the sap wood. 
As on September 20, large pieces of bark were brought to the 
laboratory and carefully examined for eggs or larve. Neither 
were found, although the beetles were present in large num- 
bers. 
Very few of the small branches and twigs of any of the trees 
in these orchards or in nearby orchards showed the work of the 
