New YorkK AGRICULTURAL EXPHRIMENT STATION. 315 
being carried about the same distance each time. In every 
instance but one the larva was blown off, and when the leaf to 
which the larva had successfully clung was again released from 
the same place the larva did not succeed in clinging to it. 
Insects.—At various times from August 26 to October 11 insects 
that were found on infested trees were caught and examined to 
see if larvee were clinging tothem. The following is a list: 
Grasshoppers. On August 26 one grasshopper was found with 
four larve clinging to it; and on August 29, another with one. 
Aphis lion, Chysopa. On August 29 two aphis lions, with one 
larva caught in the hairs on the upper surface of posterior wing 
of each were found. 
Flies, Sarcophagide. One individual was found on the same 
date with a larva clinging to one of its legs. 
Beetles. A specimen of Huphoria inda was found September 
1 with seven larve clinging to it. 
At various times also twelve wasps, representing four species, 
30 honey bees, 24 ants and two dragon flies were examined, all 
of which were taken from trees upon which the young larve were 
very numerous and crawling about actively, but no larve were 
found. In the case of the Hymenoptera it is not improbable that 
their cleanly habits account for the lack of San José scale larve. 
CONTROLLING THE INSECTS FOR THE PURPOSE OF 
STUDY. 
One of the difficulties in the way of accurate and extensive 
observation upon the development of this species has been the 
difficulty of keeping the active forms within sufficiently narrow 
limits. 'To obviate this difficulty, two simple methods were 
resorted to. First, the use of bands of cotton wool tied about 
the trunks of small nursery trees or the limbs of larger trees. 
These bands were placed from one to two inches apart and pre- 
vented the escape of larvze placed on the bark between them. 
Plate LII, Fig. 1. Second, cells made by cementing glass or 
metal rings to the bark or fruit with melted paraffin. Half-inch 
