New York AGRICULTURAL EXPERIMENT STATION. 275 
were placed upon the trunk and allowed to crawl about. Nearly 
all of them selected rough places in the bark and immediately 
began to burrow in. Second, twenty beetles were placed near 
the ends of the small limbs and prevented from escaping by glass 
flasks placed over the ends and stopped with a plug of cotton 
wrapped about the limb. In most cases the bottom of the flask 
was broken out and a fine wire net fastened over to allow circu- 
lation of air and prevent accumulation of moisture on the inside 
of the glass. Third, sixty-seven beetles were confined in cells 
made of half-inch curtain rings fastened together and to the bark 
by melted paraffin. When the beetles had been placed in the 
cells a thin cover glass, the same as used in microscopic work, 
was sealed on with paraffin. From one to four beetles were 
placed in each cell. This method, first suggested by Mr. Parrott, 
proved to be the most satisfactory as nearly every beetle began 
at once to burrow into the bark and none of them were lost. A 
photograph of some of the cells attached to the trunk of a young 
plum tree is shown at Fig. 9. 
Activities of the confined beetles—The amount of time required 
for the beetles to bury themselves in the bark varied from about 
an hour to three hours or more. Whether the beetles will deposit 
eggs in these young trees and beetles mature, it is too early yet 
to determine. On November 18, some of the channels were cut 
open. They were very irregular and extended in all directions. 
No eggs or larvee were found. 
Hibernation of the beetles—At the time of writing, Nov. 18, a 
large number of examinations of bark and branches have been 
made. As previously stated only beetles were found in the bark 
of the peach trees evidently preparing to hibernate. The eggs 
and laryee in the twigs would indicate hibernation in the larva 
or adult stage. 
The adult—The adult is a beetle measuring from 1.5 to 2.2 
mm. in length and varying in color from reddish-brown to nearly 
black. The beetles move about quite rapidly and fly readily. 
