194 , JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 10 



Late in the year 1909 a colony of gipsy moths was located at Wal- 

 lingford, about fifteen miles north of the city of New Haven, and a 

 force of men under Mr. D. J. Caffrey (now of the Bureau) began the 

 work of extermination. This work was done very thoroughly and 

 although over 8,000 egg-clusters were destroyed that first winter, at 

 the end of four years no trace of the moth was found. The scouting, 

 however, was carried on for two years thereafter. 



Following the discovery of five gipsy moth caterpillars at the 

 Stonington infestation in the summer of 1913, a force of Federal 

 scouts was sent to Connecticut, and during that winter found ten 

 towns along the eastern border of the state slightly infested with this 

 pest. None of these localities contained any old egg-clusters, and it is, 

 therefore, believed that the spread occurred during the spring of that 

 year. In the winter of 1914 this area was again scouted, together 

 with the territory just to the west of the infestations, and ten more 

 towns were found infested, but as before the infestations were light, in 

 many cases only a few egg-clusters being found in a town. In the fall 

 of 1915 on account of increased appropriations, the state was able to 

 put more men in the field than formerly, although the Federal men 

 still scouted the outside towns. During that winter one new town 

 was found to contain the gipsy moth, making a total of 21 towns which 

 together have an area of about seven hundred and thirty square miles. 

 Five towns, however, where the moth had been taken in previous 

 years were found free of the pest, and the number of colonies was 

 greatly reduced. 



Wherever egg-clusters have been found, they have been soaked with 

 creosote, and in the larger infestations all underbrush has been cut 

 and burned. Tanglefoot bands are applied the following spring to all 

 trees, including and within 100 feet of the infested trees. In 1916, 

 13,165 such bands were applied. Sixty of the larger infestations, 

 especially those showing caterpillars, were sprayed in June with arsen- 

 ate of lead. 



The heaviest infestations at the present time are in the north- 

 eastern corner of the state with scattering colonies south to the coast 

 but in no locality have they been found in sufficient numbers to cause 

 any noticeable injury. The largest colonies have consisted of 400 

 egg-clusters, but only two such have been found. The scouting work 

 which has been done thus far this winter gives evidence of another, 

 but shorter, windspread than that of 1913, for in the northeastern 

 corner of the state a large number of infestations have been found 

 which contain but a single egg-cluster each, and there is a marked 

 falling off in these as the work is carried westward. 



The brown-tail moth was first found in Connecticut at Thompson 



