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Table 1. — Collection of T, vernalis, females only, at older colonies 
Year of 
collection 
Colonies 
used for 
collection 
Collectors, 
maotimum 
Total man- 
hours spent 
in actual 
collecting 
Total 
females 
collected 
Humber . 
Humber 
Humber 
Humber 
!93S 
14 
11 
393 
32,293 
1939 
17 
13 
274 
1M13 
1940 
10 
8 
212 
19,745 
The history of one of the oldest colonies of T. vornalis , namely, 
that in the Philmont Country Club area, is also interesting. This colony, 
started in 1927, is now we 11 within the older area of infestation inhere 
beetle abundance has subsided and where the type A milky disease ( Bacillus 
popilliae ) he.s long been established and has a high incidence of occurrence. 
Yet, notwithstanding these factors and reduction by intense annual collec- 
tions of females for colonization purposes, this colony has produced a 
total of 63,468 females which have been used in the further distribution 
of the species, as shown by table 2. 
. Table 2. — Collection of T. vernalis females at the Philmont 
Country Club (colony released in 1927-) 
Year of collection 
PemaJ.es collected 
Humber 
1931 
167 
I932 
4,627 
1933 
5,391 
1934 
8,77S 
1935 
. ,8,109 
. 1936 
y 7,19s 
- 1937 
9,47s • 
i 93 g 
18,359 
1939 
p/ ^ 0 
1940 
& 1,361 
Total 
63,468 
Percentage of parasitizati on in this area in 1936 x^as 58.4. 
2 / . ■ 
Owing to objections raised by property owners, no collections 
were made in 1939, and only very limited collections in 1940, although 
there was no noticeable reduction in the Tiphia. population observable 
in either year. 
Parasitization of Japanese beetle larve,e ty T. vernalis . — Pour sur- 
veys have been conducted to determine the effectiveness of T. vernalis 
