G. H. F. Nutt ALL 115 
Observations relating to oviposition. 
Lot a 
$ No. 
Date when 
¥ dropped off 
calf or cow 
Oviposi- Oviposition 
tion began continued 
after during 
? sur¬ 
vived after 
oviposition 
ended for 
Number of 
eggs each 
¥ laid 
Tempera¬ 
ture at 
which ? was 
maintained 
1 
27. V. 1911 
12 da3’S 
56 days 3 daj’S 
— 
19^ C. 
2 
27. V. 
11 
40 
0 
3000 
»» 
3 
29. V. 
10 
39 
0 
4160 
11 
5 
2. VI. 
9 
47 
7 
5770 
»> 
8 
9. vii. 
10 
45 
4 
— 
18° C. 
9 
3. V. 
23 
44 
0 
— 
19° C. 
11 
20. XI. 
61 
39 
2 
4704 
12° C. 
12 
20. XI. 
61 
38 
3 
5548 
14 
23. XI. 
50 
45 
13 
4956 
1» 
17 
19. II. 1912 
10 
39 
7 
— 
17° C. 
18 
19. II. 
9 
19 
4 
3712 
19 
19. II. 
8 
15 
7 
4200 
,, 
20 
19. II. 
9 
19 
0 
4230 
11 
21 
21. II. 
9 
18 
8 
3468 
U 
22 
9. III. 
6 
31 
— 
— 
24 
11. III. 
7 
26 
2 
— 
J » 
25 
12. III. 
6 
27 
5 
— 
26 
15. VII. 
7 
38 
0 
4543 
11 
27 
19. VII. 
8 
28 
1 
3648 
1 1 
Besides the above 19 $’s of which an exact record was kept there 
were four which laid unfertilized eggs and three which died without 
ovipositing. The four which laid unfertilized eggs remained upon the 
host for 14,15, 18 and 19 days respectively, which is longer than all but 
one of the 19 which laid fertile eggs. The three females which died 
without ovipositing remained upon the host for 11, 23 and 24 days 
respectively. The more prolonged stay of infertile females upon the 
host was probably due to their waiting for a male. 
