240 TWENTY-FIFTH ANNIVERSARY REPORT. 
weeks. The new brood begins to appear on Long Island about Sep- 
tember 10. There is one brood a year, the old hibernating beetles 
surviving until some of their progeny have matured. The beetles 
are present from mid-spring till fall, when the frosts compel them to 
go into hiding, “~ 
In the field work, tests were made of paris green, laurel green, 
green arsenite and lead arsenate. These were applied dry, in water, 
in bordeaux mixture, in resin-lime mixture, alone, and in various 
combinations. Green arsenite dusted over the plants gave the best 
results. It was found a waste of the poisons to apply them in 
bordeaux mixture as the blue vitriol in the spray so repelled the 
beetles that they would not eat the sprayed vines and thus they 
escaped poisoning. These poisons in water alone are liable to burn 
or stunt the plants. To poison the beetles it was found necessary to 
grow trap crops to attract the insects, and to apply the poison to this 
crop rather than to the vines it is intended to protect. As the squash 
is the beetle’s favorite food plant it was recommended that this 
vegetable be planted in single rows around the margins of 
small patches, and in several rows around large fields, about four 
days before the cucumber or melon seeds are sown. When the trap 
crops are up and the beetles appear about them it was advised that 
about one-half of the plants be dusted with an arsenical 
poison, preferably green arsenite, reserving the remainder of the 
plants for similar treatment if rains or dews make the poison soluble, 
killing the vines first treated. When the cucumbers and melons are 
up, unless they are protected by covers, spraying with bordeaux, and 
applications of poison to the squashes were recommended. When 
the beetles commence to pair, the squashes may be largely destroyed, 
leaving only a few vines for the beetles to feed upon at flowering 
time as they prefer the squash flowers. 
It is believed that beans may be used with some success as a fall 
catch crop where wild flowers are not too plentiful. They should be 
planted on the cucumber or melon fields, and when the beetles leave 
the old vines to feed upon the tender beans the plants should’ be 
dusted with poison. 
SQUASH BUG. 
(Anasa tristis Deg.) 
This is an old and well known pest to growers of squashes and 
cucumbers. For years it was unusually destructive, causing 
severe losses on Long Island, especially about Jamaica when squash 
