402 Biology of Ticks 
Records relating to R . bursa Females 1-17 ( continued ). 
Female 
dropped 
from host 
Female 
ceased 
laying 
Eggs 
began 
to hatch 
on day 
on day 
on day 
$ 7. Days 1-5 alone, fixed; on 7-12th with a 
12 
38 
47 
$ 8. Days 1-5 alone, fixed; wandered and joined on 7th by ^ 4 
12 
42 
47 
9 9. Days 1-3 alone, fixed; lost 4th, found 5th with 8 and afterwards 
with 1, $ 2. f-gorged on 10th, fully gorged on 11th . 
13 
43 
48 
$ 10. Days 1-5 alone, fixed, f-gorged 10th, fully gorged 11th 
13 
42 ‘ 
48 
$11. Days 1-4 alone, fixed; shifted and with 4 on 5th. Fully gorged 
on 8th ... ... ... ... ... ... ... ... ... 
16 
43 
46 
$ 12. Put on 16th, with 5 on 17th, alone 18th. f-gorged 23rd, fully 
gorged 24th 
25 
58 
63 
$ 13. Put on 16th with a wandering <$, on 17th alone, on 19-20th with 
a f-gorged on 23rd . 
25 
59 
63 
$ 14. Put on 16th near $ 7 with which she copulates 17th. f-gorged 
on ^2^)tli ... ... ... ... ... ... ... ... 
25 
58 
63 
9 15. Put on 18th, alone 19th-22nd, found loose and wandering on 
23rd when put to $ 8 with which she copulates at once; act lasts 
10 minutes; pair stay together till she drops, the male shifting 
next day ... ... ... ... ... ... ... ... 
29 
65 
68 
9 16. Put on 18th, alone till 22nd when joined by <$ 1; the pair stay 
together till she drops, four males surrounding them, f-gorged 
oxi 23rd ... ... ... ... ... ... ... ... 
29 
60 
66 
9 17. Put on 18th, found alone on thigh on 24th, on 35th found 
wandering, on 36th put on scrotum and seen to anchor herself; 
on 37th there are 2 $$ close to her. f-gorged on 24th, f-gorged 
on 39th ... ... ... ... ... ... ... * ... 
42 
78 
81 
The foregoing protocols demonstrate the following regarding R. bursa : 
Males. After a preliminary feed lasting 3-5 days on one spot, the males 
wander in search of anchored females. Having found a female with which to 
copulate, the male frequently stays with her till she drops from the host and 
remains a day or so longer on the spot where the pair were attached. On the 
other hand the male may stay but a short time with a female, and seek a 
number of females in succession until he finds one with which to copulate. 
A number of males may congregate and anchor about a single female. The 
male may copulate with several females, a quiet feeding period of one or more 
days preceding copulation with a fresh female. The males wander about in 
search of females when no females are present upon the host, anchoring them¬ 
selves in many different places for one or more days at a time. Males were 
observed to wander thus, in the absence of females, for a period of 86 days. 
Females. All of the females were fertilized and yielded a numerous off¬ 
spring. The females settle down to feed at once when placed on the host. 
They are sought by the males on the 4th-10th day, at times after 24 hours. 
A female may copulate with one or more males. 
