BUREAU OF PLANT QUARANTINE 11 
Pa., these 19 infestations ranged from 1 to 24 beetles in 1932. In 1933, none of 
them yielded more than 12 beetles. In the city of Erie the number of beetles 
decreased from 282 in 1932 to 167 in 1933. Negative results in 1933 trapping 
activities showed that 15 isolated infestations found in 1932 in Maine, Maryland, 
New York, Ohio, Virginia, and West Virginia, ranging from 1 to 11 beetles each, 
failed to persist. 
It was possible to carry on such an extensive trapping campaign this year only 
through the use of welfare labor supplied by State and county relief organizations. 
Practically all trap inspectors employed in West Virginia, Pennsylvania, Ohio, 
Michigan," New York, New Hampshire, and Vermont were men paid from un- 
employment-relief funds. Many of these were part-time workers. At the end of 
August 180 men furnished by emergency-relief boards were employed on various 
phases of quarantine and control activities. Their employment permitted the 
utilization of the Bureau 's entire trap supply and made possible trap survey work 
in sections where otherwise these activities would have been abandoned because 
of insufficient funds. Trap inspectors and foremen in Maine were paid from 
State funds. Throughout the winter the entire supply of traps was completely 
renovated, repainted with aluminum paint, and packed in specially constructed 
wooden boxes for distribution. Comparative tests have disclosed little difference 
in the catches in traps painted with the standard green-and- white combination 
and those painted with aluminum. The aluminum protective coating was 
applied in the interests of economy and durability. The reconditioning of 
Japanese beetle traps was a Civil Works Administration project which employed 
10 men. 
Arrangements were made for the construction by a Pennsylvania manufacturer 
of 500 Japanese beetle traps for the Canadian Department of Agriculture. Since 
trapping activities in 1932 disclosed a small infestation in Niagara Falls, N. Y., it 
is the intention of the Canadian authorities to distribute these traps in 1934 on 
the Niagara Peninsula. In view of the proximity of the insect to the Canadian 
border, the Dominion Entomological Branch desires to take precautionary 
measures to forestall the establishment of the insect in Canada. 
Despite subzero weather early in February throughout most of the regulated 
territory, soil temperatures in the zone did not drop below 27° F., whereas ground 
temperatures of from 10° to 20° are required to freeze large numbers of grubs. 
The frigid temperatures therefore had no appreciable effect on the grub population. 
Trapping activities under way at the end of the fiscal year included traps set 
in 38 Virginia localities, 2 cities in West Virginia, and 44 Maryland communities, 
in addition to 800 traps distributed in St. Louis, Mo. 
Early in 1934, through the State plant officer of Missouri, a report was re- 
ceived that specimens of the Japanese beetle had been collected in St. Louis by 
amateur entomologists in both 1932 and 1933. The collection of the insect in 
the southern section of St. Louis in the summer of 1932 first came to the attention 
of the State plant officer in March 1933. A few additional specimens were col- 
lected in the same locality in June 1933. Subsequent to the latter find, a State 
inspector applied a small quantity of lead arsenate to the yard in which the 
beetles had been taken. Information concerning the 2 years' recovery of the 
insect was not conveyed to the Bureau of Plant Quarantine until February 7, 
1934. Results of the early season trapping in 1934 in St. Louis indicate that 
the delay in suppressing this infestation has permitted the insect to establish a 
scattered infestation over a rather extensive section of the city, approximately 
30 blocks southwest of the union station. Traps set in and surrounding the 
reported center of infestation resulted in the collection between June 22 and 
June 30, 1934, of 513 beetles in an area comprising S3 contiguous blocks. Many 
additional beetles were captured in the city as the trapping program continued 
into the next fiscal year. Inspectors for the St. Louis traps were employed by 
the Missouri Department of Agriculture. Welfare labor was also supplied by 
the city of St. Louis to assist in the trap work. There had been no additional 
first-record infestations determined in oonregulated territory at the end of the 
fiscal year, except the findings at St. Louis and a small infestation at Upper 
Marlboro, Md. 
RESULTS OF CONTROL WORK IN PREVIOUS TEARS 
There was no recurrence in 1933 of the infestation in the sections <^( Richmond, 
Va., that were treated with arsenate of lead in the fall of 1931. In 1931, 15 
beetles were caught. Last year 88 beetles were trapped, and this year 16 bi 
were collected in the city. Although a number of the 1933 findings were made 
