j 257 
_ the deposition of the first eggs of the first and second generations was 
59 days in 1915, in 1916 it was 53 days, and in 1917, 43 days. The time 
which elapsed between the deposition of the first eggs of the second and 
the first of the third generation in 1915 was 46 days, and in 1916, 39 days. 
The total development period for 97 males of the hibernating genera- 
tion varied from 266 to 318 days, the average being 301 days, and for 
103 females from 271 to 324 days, the average being 305 days, and the 
average for both males and females being 303 days. 
ADULT PERIOD 
As shown in Tables 13 and 14,* 60 male adults of the first generation 
lived a maximum of 14 days, a minimum of 3 days, and an average of 
6.4 days and 63 female adults a maximum of 15 days and an average 
of 7.4 days—an average of 6.9 days for both male and female adults. 
The averages given in Table 24 are for a smaller group and the averages 
are somewhat smaller. 
Twenty-five male adults of the second generation lived a maximum 
of 12 days, a minimum of 3 days, and an average of 6.1 days; and 28 
female adults lived a maximum of 24 days, a minimum of 5 days, and an 
average of 10.3 days (Tables 17, 18). The averages for a different and 
somewhat larger group shown in Table 24 are 9.7 days for the males, 
10.2 days for the females, and 10 days for both males and females. 
Ninety-one males of the hibernating generation, according to Tables 
21, 22, and 23, lived a maximum of 24 days, a minimum of 3 days, and 
an average of 10.5 days, and 95 females lived a maximum of 27 days, a 
minimum of 5 days, and an average of 13.05 days. The averages of a 
smaller group, shown in Table 24, are smaller, being 10 days for both 
males and females. 
TOTAL LIFE PERIOD 
The total life period of 24 males of the first generation, the larve 
of which were reared in apples on the tree, varied from 40 days to 68 
days, the average being 57.4 days; and that of 29 females varied from 
43 days to 68 days, the average being 59:8, and the average for both males 
and females being 58.7. 
The total life period of 30 males of the first generation, the larve 
of which were reared in picked apples, varied from 42 to 60 days, the 
average being 51.6 days, and that of 44 females varied from 42 to 58 
days, the average being 50.5 days, and the average for both males and 
females being 50.9 days. : 
Of the second generation the total life period of 25 males whose 
larve transformed, varied from 42 to 61 days, the average being 51.3 
days, and that of 38 females varied from 45 to 65 days, the average being 
53.6 days. 
*See group of tables following p. 253. 
