43 



larvpe had evidently been hatched but a few days. They were taken 

 to tlie hiboratory and fed npon pear leaves. We Avere too busy Avith 

 other work to watch them closely, therefore I have no record or 

 descriptions of the ditferent 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 eggs had been deposited on the side of the cage. Most writers 

 refer to the eggs as being golden yelloAV in color, but these were 

 quite a brilliant liglit green. All of the adults, including both sexes, 

 had immaculate wings. 



August 15 the eggs had hatched. AVe fed the larvfe until about 

 the middle of September, when Ave had to go out inspecting nurs- 

 eries and could not give them the food needed, and all died before 

 pupating. I do not belicA^e there Avere tAvo complete broods of the 

 insect throughout the State, Ix^cause the early nests Avere extremely 

 rare, most of the nests appearing about a month later. The latitude 

 of New HaA'^en, Avhile not A^ery ditferent from that of New York City, 

 A^aries by OA^er half of 1° and probably marks about the northern 

 limit of the double-brooded occurrence of the fall AAebAvorm. 



Mr. Felt said that the first nests Avere found in Ncav York the 

 latter part of June. He Avas conAdnced that there Avas a partial 

 double brood. 



Mr. Smith said that throughout NeAV Jersey it is fully double 

 brooded. 



The folloAving paper Avas presented : 



PRELIMINARY REPORT UPON WORK AGAINST A DESTRUCTIVE 

 LEAF-HOPPER (EMPOASCA MALI Le B.). 



By F. L. Washburn, »s7. Anihomj Park, Miiui. 



I came to the last meeting of the Association, at St. Louis, with an 

 unsolved i:)roblem in niA' mind as to hoAV Ave could control this leaf- 

 hopper, Avhich AA'as making its presence felt in a A'ery destructiA^e Avay 

 in the nurseries of Minnesota. T haA'e found it on many trees other 

 than the apple. The assistant under Avhom the Avork Avas conducted 

 last summer reports that its attacks are least apparent on the North- 

 Avestern Greening and most evident on the Repka, Charlamoff. Ly- 

 man, Minnesota, and Transcendent A^arieties. After the Repka, ac- 

 cording to his observations, comes Scott's Winter, Avhich appears to be 

 quite badly affected, and in a diminishing ratio Patten's Green- 

 ing, Early StraAvberry, SAveet Russet, jMalinda, Longfield, Duchess, 

 Hibernal, Wealthy, Whitney, Peerless, Anisim. 



