SEVENTEENTH ANNUAL MEETING. 27 



and newly set orchard trees, and in several cases remedial 

 treatment was essential. Spraying- with kerosene emulsion, 

 soap and water, or one of the "soluble oils" is the remedy. 



The New York plum scale {Eulecanium cerasifex Fitch) 

 was received from Bethany, where it had succeeded in badly 

 infesting a European plum tree. This and the apricot scale 

 {Eulecanium armeniacum Craw.) are becoming more com- 

 mon, and occasionally become sufficiently abundant to injure 

 trees. Both are large brown species, oval-hemispherical in 

 shape, and each has but one brood in a season. The young 

 of both species appear about July first, and the remedy is to 

 spray the trees with a strong oil emulsion between November 

 1st and April 1st. 



The grape-vine flea beetle {Haltica chalybea 111.) was 

 received from Plantsville, where it damaged grape-vines by 

 eating holes in the buds just before it was time for them to 

 open. An arsenical poison applied to the buds is the remedy. 



The currant twig-girdler {Janus ilaviventris Fitch) was 

 received from New London, where it injured the new growth 

 in laying its eggs. Fortunately, however, this insect is not 

 sufficiently abundant to cause much damage. There seems 

 to be no easy method of control. 



Green fruit worms, rose chafers, codling moth and apple 

 maggot were present in about the usual numbers, but on 

 account of the scarcity of fruit, their depredations were more 

 noticeable than in most seasons. The red-humped caterpillar 

 and the yellow-necked caterpillar defoliated many young- 

 trees in orchards late in the season. The hickory tussock 

 moth was more abundant than for many years, and the cater- 

 pillars were found feeding upon apple and other fruit trees 

 and many kinds of shade and forest trees. The fall canker 

 worm, which has been scarce about the Station since 1900. is 

 again becoming abundant. The adults emerge during the 



