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or the control of this insect. Some of them may be worth trying; most are of doubtful value, and some are absolutely injurious to the trees. On July 3, 1914, some affected hickory trees on the Station grounds were sprayed heavily with powdered lead arsenate, 4 lbs. in 50 gallons of water, to which one pint of "Black Leaf No. 40" was added. Two days later many dead beetles were found on the tar walks under the trees, and a few were observed each day up until about the middle of August. Most of the trees treated, however, had been so badly injured by the insect that they were removed. Since then this insect has caused little damage on the grounds, though a few hickory trees still remain. In 1901 an outbreak of the hickory bark beetle caused the death of 110 trees on the Hillhouse place in New Haven; then the destructive work of the insect ceased and the few remaining hickory trees are still standing and in fairly good condition. I mention these instances to show that nature's control methods through parasites and natural enemies is far more effective with certain pests than any which man has yet devised. Of course, we hope that in the future man will make better progress along this line. THE PAINTED HICKORY BORER. _Cyllene pictus_ Drury. There are several borers attacking the wood of the trunk of the hickory, but one of the commonest is the painted hickory borer. It also occasionally attacks black walnut, butternut, mulberry and osage orange. In hickory especially the larval tunnels are often found in the wood when trees are felled. There is probably one brood annually and the winter passed in the pupa stage, though it may possibly hibernate as a larva. Its life history is not fully understood. It is a common occurrence in Connecticut, and specimens are sent me every year, for the adult beetles to emerge in March from firewood in the house or cellar and crawl about seeking a chance to escape. The housewife fears that a terrible household pest has descended upon her, and with fear and trembling invokes the aid of the Agricultural Station. The beetles appear outside in April and May, and probably oviposit soon afterward. They are about three-fourths of an inch in length and are black, prettily marked with golden yellow. The insect can be controlled only by the old arduous methods of digging out, and injecting carbon disulphide into the burrows. Several other long-horned beetles are borers in the hickory and ot
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