64 PARASITES OF GIPSY AND BROWN-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 phalse- 

 narum Nees, which came from eggs forwarded by Miss Rtihl and 

 collected in Croatia, but he also reared an interesting parasite of the 

 genus Trichogramma from egg masses received from Wiirtemberg, 

 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 

 whiter nests of the brown-tail moth, so many of which had been 

 brought over from Europe the previous winter 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 nowski's unpublished observations.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 

 many 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 Forbusli 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 



