Insects Bred from American Larch 23 
and ten feet above ground yielded numerous specimens of 
Serropalpus barbatus and nothing else. 
Tree No. VII was one which had been felled by the 
wind about four years previously (1912), but the trunk 
was still free of the ground. The bark was quite loose and 
showed evidence of some decay. Burrows of P. rufipennis 
were numerous, but of course the insects responsible for 
them had long since left this tree. In the field a few larvae 
of “scavenger beetles,” species undetermined, were found, 
and also several larvae of a cerambycid, which was later 
shown to be Monohammus scutellatus. A sample taken from 
the trunk about forty feet from the base (the trunk had, 
however, been recumbent but free of the ground for several 
years) yielded two specimens each of M. scutellatus and Ser- 
ropalpus barbatus. No other forms were bred from this 
material. 
Tree No. VIII was a small tree about ten feet high and 
having a D. B. H. of two inches. It had been killed by 
shading. No insects were taken from this tree in the field. 
The bark was quite dry and tight and altogether it did not 
form a breeding place which would be suitable for many 
wood-boring or bark-boring insects. From the general char- 
acter of the wood and bark one would expect insects to arise 
from it similar to those coming from the limbs of larger 
trees. In fact this expectation was realized when in the 
breeding cage three specimens of Leptostylus sex-guttatus 
and one of Chrysobothris sex-signata appeared. Later 
examination of this stick revealed a few burrows of P. rufi- 
penms, but these were not normal and in only one or two 
cases were any larval galleries present. 
All of the preceding material was shipped to the labora- 
tory from Crittenden, N. Y., on April 29, 1916. In addition 
to this, material which was obtained at other times or other 
localities is listed below. 
Tree No. IX was obtained from the College Forest near 
Wanakena, N. Y. This tree of about five inches diameter 
