Syoay ar sna [a eR 
43 
larve had evidently been hatched but a few days. They were taken 
to the laboratory and fed upon pear leaves. We were too busy with 
other work to watch them closely, therefore I have no record or 
descriptions of the different molting stages. On July 29 all but 
three of the caterpillars had pupated, and two adults emerged 
August 1. The moths continued to emerge until August 5, when 
there were 30 in the breeding cage, and two masses of small green- 
ish eges had been deposited on the side of the cage. Most writers 
refer to the eggs as being golden yellow in color, but these were 
quite a brillant ight green. All of the adults, including both sexes, 
had immaculate wings. 
August 15 the eggs had hatched. We fed the larve until about 
the middle of September,.when we had to go out inspecting nurs- 
eries and could not give them the food needed, and all died before 
pupating. I do not beheve there were two complete broods of the 
insect throughout the State, because the early nests were extremely 
rare, most of the nests appearing about a month later. The latitude 
of New Haven, while not very different from that of New York City, 
varies by over half of 1° and probably marks about the northern 
hmit of the double-brooded occurrence of the fall webworm. 
Mr. Felt said that the first nests were found in New York the 
latter part of June. He was convinced that there was a partial 
double brood. ; 
Mr. Smith said that throughout New Jersey it is fully double 
brooded. 
The following paper was presented: 
PRELIMINARY REPORT UPON WORK AGAINST A DESTRUCTIVE 
LEAF-HOPPER (EMPOASCA MALI Le B.). 
By F. L. WASHBURN, St. Anthony Park, Minn. 
I came to the last meeting of the Association, at St. Louis, with an 
unsolved problem in my mind as to how we could control this leaf- 
hopper, which was making its presence felt in a very destructive way 
in the nurseries of Minnesota. J have found it on many trees other 
than the apple. The assistant under whom the work was conducted 
last summer reports that its attacks are least apparent on the North- 
western Greening and most evident on the Repka, Charlamoff, Ly- 
man, Minnesota, and Transcendent varieties. After the Repka, ac- 
cording to his observations, comes Seott’s Winter, which appears to be 
quite badly affected, and in a diminishing ratio Patten’s Green- 
ing, Early Strawberry, Sweet Russet, Malinda, Longfield, Duchess, 
Mibernal, Wealthy, Whitney, Peerless, Anisim. 
