EXPERIMENT STATION REPORT. 597 



thirty-seven fully-developed live scales with egg masses to a twig- 

 ten inches long. These twigs were badly infested and the egg masses 

 were ranged closely, one behind the other, but there were many like 

 this on badly-infested trees. 



June 34th, infested twigs were received from Keyport and showed 

 scales from which parasites had emerged as well as some Coccmellid 

 larva?. On this date the first pupae of the CoccinelUd were found in 

 the laboratory, but an examination made at Montclair did not show 

 any pupffi, although a few larvae were crawling on . the tree trunks 

 and getting into crevices, apparently ready to pupate. Examinations 

 made at Newark two days later showed a few CoccinelUd larvae and 

 one pupa within the cottony mass of Pulvinaria. 



June 28th, examining the infested trees at Montclair, it was found 

 that the egg masses had been pretty well torn apart, and not one could 

 be found which was not infested by CoccinelUd larva?, or had not bei'u 

 eaten out by them. In one spot I found eight larvae clustered around 

 and in three or four egg masses. Some of these larvae were quite small, 

 while others were of good size, ready to pupate, and while a few larvi^ 

 had pupated under the cottony material, most of those found at this 

 time occurred in crevices in the bark or in cavities beneath it. The 

 great good which had been done by these larva in destroying the eggs 

 and young larva? of Pulvinaria, was shown by the small number of the 

 latter which had set upon the leaves at Montclair, as compared with 

 those at Newark, where the CoccinelUd was more scarce, or to the 

 amount of setting there would have been under normal conditions. 



One adult of the CoccinelUd was also observed at Montclair, and, 

 judging from its appearance, it had just emerged from the pupa. 



Also visited East Orange to examine the trees, especially along 

 Halsted street, where the infestation had been very bad the previous 

 year. I found them pretty badly infested in some places, but as they 

 were nearly all trimmed high, it was impossible to examine the scaly 

 twigs. However, I observed a few CoccinelUd larvse crawling on the 

 trunks and a few pupa in crevices in the bark. The Pulvinaria egg 

 masses, too, appeared somewhat torn, but not as much so as at Mont- 

 clair, and, altogether, it seemed as if conditions might be similar to 

 those in Newark. 



June 30th, I examined the material collected at Montclair and 

 made careful search for eggs of the CoccinelUd. None were found, 

 although larvae in all stages, as well as several pupse, were observed. 

 The egg masses and most of the scale larva had been pretty well de- 



