102 College of Forestry 
punctipennis Lee. [Tomicus balsameus Lec. | by Felt (1906, 
pss yy. 
S. tomict was bred from several lots of larch material and 
was associated with the scolytids, Dendroctonus simplex, 
Polygraphus rufipennis and Eccoptogaster picew. There can 
be little doubt that it may be parasitic upon the larve of 
any or all of these small beetles. Cocoons which from their 
size probably gave rise to this small parasite were found in 
the larval burrows of both P. rufipennis and EF. picew, but 
were especially numerous in those of the former, and speci- 
mens were bred from other lots of material containing no 
other scolytid than P. rufipennis. The clerid Phyllobenus 
dislocatus and the parasite Phasgonophora sp., Cheiropachus 
sp., Heterospilus sp., Atoreutus astigmus and Odontaulacus 
bilobatus were also bred from the same materials as were a 
number of cerambycids and buprestids. 
Spathius sp. 
(Det. by S. A. Rohwer) 
An unidentified species of Spathius was bred from the 
upper part of the trunk of Tree X in considerable numbers. 
In this material it was associated with the scolytids, Poly- 
graphus rufipennis and Hecoptogaster picee ; the ceramby- 
cids Phymatodes dimidiatus; the melandrycid, Serropalpus 
barbatus; and the siricid Urocerus albicornis. It is undoubt- 
‘edly parasitic upon one or both of the scolytids mentioned. 
The predator Phyllobenus dislocatus; the parasitic 
hymenoptera Spathius tomict, Rhyssa lineolata, Doryctes 
sp., Spintherus pulchripennis and an unidentified ptero- 
malid; and the parasitic fly Medeterus sp., were also bred 
from the same material. 
Doryctes sp., a, b, ¢ 
(Det. by S. A. Rohwer) 
Various species of this genus have been recorded as para- 
sitie upon wood-boring larvee (Riley, 1890, p. 350; Hopkins, 
1893a, p. 222; Chittenden, 1893, p. 248). A number of 
unidentified specimens, probably representing several new 
