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NEW JERSEY x\GRICULTURAL COLLEGE 



masses and eating the eggs. A few egg masses that appeared normal 

 were torn open, and in several I found a Coccinellid larva — in one 

 case two — and the eggs partly destroj^ed. These larvoe are white in 

 color and the npper surface of the body is covered witli a material 

 resembling that secreted by the Pulvina-ria. It seemed probable that 

 these were the larvas of Hyperaspis signata Oliv., as we had found this 

 beetle associated witli the Pulvinaria, and subsequent breeding proved 

 this to be the case. An example of the Goccopliayus was also ob- 

 served on the twigs, but although I watched it for some time I could 

 not observe any effort to deposit eggs. 



June 20th, another trip was made to Montclair in company with 

 Mr. Malcolm H. Smith. There were several badly-infested spots in 



the town, and the infestation in each 

 case gradually lessened away from 

 the infested centers. Many of the 

 egg masses were found infested by 

 the Coccinellid, and in some in- 

 stances the larva within the cottony 

 mass would cause it to become en- 

 hirged. These larvas varied consid- 

 erably in size and seemed to be in 

 all stages, from very small to those 

 large enough to pupate. Twigs with 

 the Coccinellid and Pulvinaria were 

 placed in a battery jar to bring the 

 Coccinellid to maturity and also to 

 obtain larvne of the scale. June 

 20th, a few scale larvae were ob- 

 served in the laboratory, on twigs 

 collected some days before, and on 

 June 25th they were observed on an 

 infested tree in Newark. In that 

 city the infestation was not as great 

 *''^' ^~' , . as in Montclair, and neither were 



Larva just hatched ; actual size a mere 



point. Original. there as many Coccinellid larvas in 



evidence, although a few in about the same condition as at Montclair 



were* observed. 



To determine how the number of live scales at this time compared 



with the number observed in the hibernating stage, the insects on 



several twigs were carefully counted, with the result of an average of 



