370 
Parasites of Common Flies 
Table III ( continued ). 
No. of 
experi¬ 
ment 
No. of 
females 
used 
No. of 
puparia 
given 
Age of 
female 
in days 
Result 
Male 
placed 
in tube 
No. of 
puparia 
given after 
male added 
Result 
Length 
of life 
of 
female 
in days 
27 
1 
6 
6 
(1) fly emerged 
— 
— 
— 
19 
28 
1 
6 
6 
(2) A. manducator emerged 
(3-6) dead fly remains 
(1-3) flies emerged 
37 
29 
1 
6 
6 
(4) A. manducator nymph 
(5) dead fly remains 
(6) dead fly remains +1 $ 
(1) A. manducator emerged 
30 
30 
1 
6 
6 
(2-6) dead fly remains 
(1-2) flies emerged 
37 
31 
1 
6 
6 
(3) A. manducator emerged 
(4-6) dead fly remains 
(1) fly emerged 
28 
32 
1 
6 
6 
(2-5) dead fly remains 
(6) dead A. manducator 
(1-3) flies emerged 
22 
33 
1 
6 
6 
(4-6) dead fly remains 
(1-2) flies emerged 
37 
34 
1 
6 
6 
(3-4) dead fly remains 
(5) dead fly remains +1 $ 
(6) dead fly remains + 4 <$ 
(1-3) flies emerged 
30 
35 
1 
6 
6 
(4-5) dead fly remains 
(6) dead fly remains +4^ 
(1-2) flies emerged 
30 
36 
1 
6 
6 
(3-6) dead fly remains 
(1-6) dead fly remains 
_ 
_ 
_ 
19 
37 
1 
6 
6 
(1-5) dead fly remains 
— 
— 
— 
25 
38 
1 
6 
6 
(6) A. manducator larva 
(1-2) flies emerged 
35 
39 
1 
9 
? 
(3^4) dead fly remains 
(5) dead fly remains + 2 $ 
(6) dead A. manducator 
(1-5) flies emerged 
58 
40 
1 
12 
6 
(6) dead fly remains 
(7) A. manducator dead 
(8-9) A. manducator larvae 
(1-3) flies emerged 
31 
41 
1 
12 
6 
(4-8) dead fly remains 
(9-11) A. manducator dead 
(12) A. manducator emerged 
(1-10) dead fly remains 
23 
(11-12) dead A. manducator 
depositing sufficient to provide for the complete consumption of the host, 
only four or five would be deposited at a time, and notwithstanding that after 
the depositing of what probably amounted to barely 5 per cent, of those which 
filled their abdomens fairly to bursting, they ceased, and nothing short of 
impregnation seemed to arouse their maternal instincts again.' 5 “This 
progeny, as was expected, was exclusively of the male sex, which when afforded 
opportunity, promptly united with their virgin mothers, who thereupon dis¬ 
played the normal desire to deposit their eggs.” From such eggs both sexes 
were reared. 
