64 
PARASITES OF GIPSY AND BROWX-TAIL MOTHS. 
brown-tail moth to Massachusetts in midsummer, and later to send 
over egg masses of the gipsy moth. From the brown-tail moth egg 
masses parasites were reared by Mr. Titus at North Saugus and 
were observed to oviposit in native eggs. Mr. Titus reared not 
only the species referred to by Dr. Mayr, namely, Telenomus pTialse- 
narum Nees, which came from eggs forwarded by Miss Ruhl and 
collected in Croatia, but he also reared an interesting parasite of the 
genus Trichogramma from egg masses received from Wurtemberg, 
Dalmatia, and Rhenish Prussia. 
At Budapest the visitor was especially glad to be able to announce 
to Prof. Jablonowski the success of the rearings of parasites from the 
winter nests of the brown-tail moth, so many of which had been 
brought over from Europe the previous whiter on the basis of Jablo- 
nowski's unpublished observations. At the time of this visit Prof. 
Jablonowski was too busy completing his important work upon the 
migratory grasshoppers invading Hungary to be able to promise 
much assistance beyond that of corresponding with foresters and 
other persons well located in Hungary in order to obtain information 
as to good places to secure material. 
Returning to America about the end of May, the laboratory at 
North Saugus was again visited, with Mr. Kirkland and Mr. Titus, 
and the work of preparing indoor cages and field cages was pushed. 
In the course of the summer a number of outdoor houses were con- 
structed, and in these houses it was hoped to study the breeding 
habits of the imported insects. 
During the summer the number of shipments received from Europe 
was so large that Mr. Kirkland made no attempt to list them in his 
Second Annual Report published January 1, 1907. In June, in ad- 
dition to egg masses previously mentioned, larvae and pupae of both the 
gipsy moth and the brown-tail moth were received in number from 
man\- different European localities, and from these a large number 
of parasites of several different species were reared, the most abund- 
ant having been tachina flies. In one lot received from Holland more 
tachinids were reared than there were gipsy moth caterpillars orig- 
inally. Nearly 40,000 gipsy-moth larvae and pupae were received 
and more than 35,000 brown-tail moth larvae and pupae. The receipt 
of predatory beetles is recorded in a previous paragraph. 
It will be noticed that in the work conducted so far the effort to 
import parasites was confined to the continent of Europe west of 
Russia, whereas the well-known occurrence at intervals in large 
numbers of the gipsy moth in parts of Russia, and especially in 
southern Russia (a very good account of which will be found in the 
Third Report on the Gipsy Moth, by Forbush and Fernald), seemed 
to render it desirable that search should be made in those regions 
for parasites. The fact, however, that during^ these two years 
