420 
Biologif of Ixodidae 
Time the adiili A. 
variegatum 
remains upon the host. 
■ Host 
Host maintained 
Date and No. of ticks at average 
put on host temp, of ca. 
No. of gorged 
$ s collected 
on successive 
days 
Behaviour of <? 
Ram 
4. vn. 
1912, 2(?, 3$ 
20° C. 
1 on day 51 
1 1 ? dead on ram’s 
scrotimi, but stiU 
attached, on 4. m. 13, 
i.e. after 243 days ! 
Calf 
18. vn. 
3 c? 3 $ 
20° C. 
1 on day 17 
1 „ 20 
Calf 
15. vin. 
fi <? 6 $ 
20° C. 
1 on day 11 
2 „ 12 
1 „ 13 
1 „ 15 
1 c? dead in ear-bag 
24. n. 13=after 122 
days. 
1 (? dead attached to 
Calf 
25. X. 
3 c?, 2$ 
— 
- ^ 
ear 4. rv. 13 = after 
161 days. 
1 dead in ear-bag 
22. V. 13 = after 209 
days. 
Calf 
8. XU. 
1 (?, 1 $ 
18° C. 
1 on day 11 
Calf 
8. xn. 
!<?, 1$ 
18° C. 
1 on day 11 
Calf 
6. I. 
1913 !(?,!$ 
15° C. 
1 on day 33 
Calf 
15. n. 
1(?,2$ 
15° C. 
1 on day 23 
12 $ 
Observations relating to oviposition of A. variegatum. 
Bate when ? 
dropped from 
liost 
Oviposi¬ 
tion began 
after 
Oviposi¬ 
tion lasted 
Days ¥ sur¬ 
vived after 
ovipos. ceased 
Temp. 
ca. 
Remarks 
4. vm. 1912 
24 days 
— 
— 
16° C. 
Eggs failed to hatch. 
7. vm. 
21 
— 
— 
— 
>> 
20. vrii. 
23 
71 days 
4 days 
15° C. 
iJ 
27. vm. 
25 
62 
9 
— 
>> ?9 
27. vm. 
28 
62 
4 
— 
99 
28. vm. 
2() 
90 
10 
— 
99 99 
30. vm. 
24 
90 
— 
— 
99 99 
19. XII. 
39 
38 
3 
12° C. 
99 99 
20. XII. 
46 
34 
9 
— 
99 99 
8. II. 1913 
19 
30 
2 
30° C. 
Larvae emerged after 16 days. 
10. III. 
9 
20 
— 
— 
„ „ „ 31 days 
Smmnary. 
In the case of Amblyomma variegatum. we can only record a partial 
life-history as our attempts to raise the species were not wholly success¬ 
ful ; we, moreover, lost the strain. 
The $ remained 11-20 days upon calves maintained at ca. 18-20° C., 
