65 
From the maple was reared the Cerambycid borer Acanthoderes 
decipiens. It was found as a pupa in the rude chip case just under the 
bark. The cylindrical burrow made in its exit extended well in toward 
the heart of the tree and through quite sound wood. 
Another Cerambycid, Leptura proxima, was found quite numerous in 
blocks of hard maple sawed from the tree the winter previous. The 
grubs were quite large, and it was thought that they would pass 
through the transformations that season, but it was not until a year 
from the following May that the first beetle issued. From the data 
given it seems that the borer must require two or more years to reach 
maturity. 
In *‘ Forest Insects” Dr. Packard mentions Lyctus striatus under’ 
the list headed “* Found in rotten oak wood; not known to be injuri- 
ous.” We have quite recently found them issuing from a red oak 
floor in one of our college halls. The floor was laid two years pre- 
vious to the time of this appearance, and the lumber was seasoned 
at that time. The beetles issued from the sap wood only, and prob- 
ably were feeding there when the tree was sawed into lumber. 
In order to learn more of their habits quite a number were placed 
in a glass jar containing a branch of green oak, one of dead oak, 
and a seasoned stick from the shop. The beetles preferred the lat- 
ter when first introduced, and made themselves at home hy boring 
a hole entirely through it diagonally the first night. Mating took place 
in a few hours after issuing and eight days later ovipositing was first 
noticed. Mating again took place before each egg was deposited. This 
Seems essential, as a female was placed by herself immediately after 
inating the first time, and, although watched for several weeks after the 
others had died, no sign of ovipositing was noticed. The brarch of green 
oak was preferred in depositing the eggs, and none were placed on the 
stick from the shop. Ovipositing occurred about once in half an hour 
and lasted but one day. One week after oviposition young larvee were 
found. We arein hopes to get the complete life history from them. 
From the oak posts of one of our summer houses were taken quite a 
number of Phymatodes dimidiatus along with P. varius. Four different 
kinds of wood—elm, maple, hickory, and ironwoodi—besides the oak, 
enter into the construction of the chalet, but none of the others showed 
signs of borers, while the oak was well perforated. The species seem 
to work mostly just beneath the bark. 
Two specimens of Alaus oculatus were taken in the trunk of a white 
oak near the partially decayed heart. A full-grown larya of this was 
also found in the trunk of a “sappy” aspen. 
~ On the 10th of June a piece of bark was torn from an aspen (Populus 
tremuloides) that had but recently died, and under it signs of insect 
depredations were quite evident. Upon further investigation the bark 
and wood were found to be almost entirely separated. Underneath, the 
wood was yet sound and quite green. Here were found galleries pene- 
i911—No, 1-5 Sos aS 
