584 NEW JERSEY STATE AGRICULTURAL. 



formerly contained a large nunilxr of fruit trees of various 

 kinds, but Nvithin the last few years it has become so badly 

 infested with San Jose Scale that at the present time many of the 

 trees are dead or dying. The apple trees on which the Cliilorocm 

 were i)laced, although more or less infested, are in such a con- 

 dition tiiat they will probably last for a year or two longer and so 

 afford an opportunity for the insects to get foothold at least. 



The first sending of tlie insects which arrived July 8th, con- 

 tained 13 beetles and 2 of these evidently had reached the adult 

 stage en route as there were two pupa skins in the box when it 

 arrived. All the specimens of this lot were taken to the fruit 

 farm and placed on an apple tree badly infested with the scale 

 in all stages of development, including a multitude of crawling 

 larvae. Numerous specimens of the small black beetle, Pciifilia 

 miscUa, and its larva were also observed on this tree. The Chilo- 

 corus were placed on adjoining limbs so that they would ha\ e the 

 best opportunity for mating, and several days afterward a person, 

 living on the farm, reported having seen the luetics on some of 

 the fruit on this tree. 



The next sendings of Chilocorus came July 22nd and 23rd, 

 That of July 22nd contained 4 larvae, 5 pup^e and i beetle, while 

 that of July 23rd contained 7 larvae, 12 pupre and 70 odd beetles; 

 These sendings also were taken to the infested fruit trees and 

 seven scaly ap|)le trees in the vicinity of the tree on which the 

 beetles of July 8th were placed, received 9 beetles and 4 lar\a\ 12 

 beetles, 10 beetles and 2 larvae, 10 beetles, 9 beetles and 3 larvae, 

 12 beetles and 6 beetles and 2 larvae respectively, making a total 

 of 68 beetles and 1 1 larvae placed on the trees on which also 

 numerous specimens of Poiiilia niisclla in various stages were 

 observed. The remaining insects consisting of 15 or 16 pupae 

 and a few adults were placed in a jar with some badly infested 

 plum twigs in the laboratory. 



Tuesday. July 26th, the last sending, consisting of 12 beetles 

 and 2 puprc, was recei\ed and these insects were all kept at the 

 laboratory and placed in another jar. At intervals of a few days 

 fresh supi)lies of food, consisting of fruit and twigs infested with 

 scale, were placed in the jars anil the old twigs were taken out and 

 examined to a.scertain whether oviix:>sition had taken place and to 

 what extent the luetics had been feeding. On Wednesday, 

 August 10th, when the jars were cleaned imt and a fresh supply 

 of food was added, there were 18 Ijeetles in one jar ir.d 10 in the 

 other, and nn .August 18th there were still 14 beetles active in 

 one jar and 10 in the other. 



