(>00 NEW JERSEY AGRICULTURAL COLLEGE 



Brook there are a number of fine, large silver maples, but there were 

 no signs of the Pulvinaria anywhere in the place. 



A day or two later a report was received from Mr. Charles White- 

 head, of South River, stating that the scale was very abundant on his 

 trees and had caused a dropping of leaves. Upon investigation I 

 found that the insect had been plentiful on his large silver maples, 

 but more so on some trees than on others, and that most of the in- 

 fested wood had been iv?moved. Plowever, I obtained a few infested 

 twigs and found that here, also, the Coccinellid was present, a few 

 larvae and pupie being observed in the egg masses, while on leaves 

 on which a number of scales had set were a few adults. These trees 

 were the only ones in South River upon which the scale was observed. 



Placed all the beetles which had been collected and brought to the 

 laboratory in one jar, with some leaves infested with Pulvinaria sets 

 for them to feed upon. A few days later these leaves, whfch had dried 

 up somewhat, were taken from the jar and carefully examined for 

 eggs of Hyperaspis, which should occur if there was a second brood; 

 but no eggs were found. The beetles appeared restless until fresh, 

 infested leaves were placed in the jar, when they settled down and 

 began feeding upon the young sets. 



July 24th, on infested leaves at N"ew Brunswick, it was found that 

 a few sets on each leaf were parasitized. These resembled those of 

 the hibernating insects, except for their small size. They were much 

 more convex, plumper and darker than the normal sets on the same 

 leaves, and upon examination I found parasitic pup». Some, of a 

 lighter color, a few of which I found resembling the dark forms, but 

 a little softer, contained the parasitic larvjE. The parasitized scales 

 were placed in a bottle to bring the parasites to maturity, while the 

 rest of the sets were placed in the jar containing the beetles, to serve 

 as food. For the most part the l>eetles were resting within the dry, 

 curled-up leaves, and the majority were as active as ever, only a few 

 having died. 



At Montclair, July 25th, I observed less of the scale than on the 

 previous examination. On many leaves not more than two or three 

 sets were to be found, while scarcely a leaf contained more than a 

 dozen, and part of these were parasitized, so that the adult beetle 

 had done very effective work in destroying the sets. The CoccineUids, 

 however, did not appear as abundant on the leaves at this time, 

 although there was a slightly larger number on the trunk and several 

 were resting near the cottony masses. Two were found in the masses, 



