l.ss (JYISY AND BROWN-TAIL MOTHS. [Jan. 



den, was transferred in the fall of 1905 to the wooded and 

 badly infested section of North Saugus, where the work was 

 carried tin (hiring the seasons of 1900-07. It being well dem- 

 onstrated tin- present fall (1907) that the Saugns building 1 had 

 become outgrown, by reason of the large number of employees 

 necessary during the busy season and by the lack of certain 

 almost indispensable requisites, arrangements have now been 

 made for a larger and more convenient building at Alelrose 

 Highlands. 



As might be expected, methods of packing and shipping 

 the insects so that as many as possible of them should reach 

 America alive was one of the first details to require atten- 

 tion. The shipments of 1905 were of little value; in 1906 a 

 very large amount of material arrived in good condition, and 

 upward of 54,200 parasites and 850 predaceous beetles reached 

 us alive, and a large part of them were liberated in infested 

 districts. The figures for 1907 are not completed as yet, but 

 the number of living parasites was larger and of a much richer 

 variety than for 1906. As 1907 draws to a close, we can safely 

 say that at least two, if not more, of the species liberated in 

 1906 have thoroughly established themselves in this country. 

 and are at work on American gypsy and brown-tail moths. A 

 certain minute parasite determined by Dr. Howard as belonging 

 to the genus Pteromalus, which attacks the small brown-tail 

 moth caterpillars in the fall, later hibernates in their webs, and 

 attacks them and also the small gypsy moth caterpillars the fol- 

 lowing spring, was liberated in very large numbers in 1906. 

 \Vebs collected in the winter of 1906-07 in the localities where 

 these insects were allowed to escape in the spring of 1906 con- 

 tained a siibsianl ial number of the Pterovnalus, thus showing 

 that the insect had established itself. 



Again, in all European literature particular stress is laid 

 on the value of a certain predaceous beetle, Calosoma sycoplianta, 

 as an enemy of the gypsy moth caterpillars. This large beetle 

 climb- the infe-ti'd trees, seizes the caterpillars and devours 

 them. There is hardly a Kuropeaii treatise on the g\ p-v moth 

 but mention-; ;n 1( | prai-e^ the good work done by this rapacious 

 insect Prof. ( '. If. Fernald tells the writer that some years 

 ago, when he was in the Thiergarten at Berlin, it was a very 



