G. H. F. Nuttall 
415 
The time required by A. hebraeum for meiamorfhosis. 
Egg to Larva. 
Lot N. 17.32. Eggs maintained at 30° C. 
Progeny of 
¥ No. Eggs laid on 
Larvae 
emerged after 
Remarks 
1 
16. V. 1913 
49 days 
[Note :—Lounsbury (1) gives the 
2 
17. V. 
48 
period as 77-81 days in summer 
3 
18. V. 
49 
and 185 days in winter; he made 
4 
30. V. 
53 
3 observations.] 
5 
29. V. 
54 
6 
29. V. 
53 
7 
7. VI. 
56 
8 
7. VI. 
51 
9 
10. VI. 
63 
10 
16. VI. 
50 
11 
27. vn. 
50 
12 
28. vn. 
— 
13 
28. vn. 
47 
14 
27. vn. 
51 
15 
27. vn. 
52 
16 
28. vn. 
51 
17 
28. vn. 
50 
18 
28. vn. 
46 
19 
28. vn. 
52 
20 
29. vn. 
50 
21 
30. vn. 
48 
22 
30. vn. 
49 
Larva to Nymph. 
Lot 
Host 
Date on which 
gorged tick 
dropped from 
host 
Nymph 
emerged 
after 
Ticks maintained at 
Remarks 
N. 1732 
Ram 
19. I. 1913 
17 days 
30° C. for 3 days 
[Note :—Lounsbury (1) 
then at 22° for 
gives the period of 16 
6 days, then 8 
days when incubated; 
days at 30° 
49 days in winter. In 
N. 1732 
Ram 
25. n. 
13 
30° C. 
his later paper (2) he 
ff 
Calf 
28. IX. 
12 
30° C. 
gives 15 days at 30-33° 
N. X 
Hedgehog 
16. n. 1906 
46 
ca. 15° C. for 29 
C., 23-84 days when 
days, then at 
kept cool. Moulting 
37° C. 
is retarded at tempera¬ 
9f 
Hedgehog 
1. m. 1906 
16 
37° C. 
tures above 35° (35- 
41° C.)] 
