Ct. H. F. Nuttall 
401 
All of the 17 9? were fertilized and had plentiful offspring. Of the dd, 
1 anchored outside the bag and was lost on the 39th day, 1 died on 84th day, 
3 were lost on the 98th, 111th, and 122nd days respectively, leaving 6 that were 
removed in a lively condition on the 140th day, having paired with further 
females that had been added on the 128th day and which dropped off on the 
137-140th day. 
Owing to the glossy backs of the males, a few did not retain their marks, 
some confusion arose whereby the records were partly vitiated. A sufficiently 
accurate record could be kept, however, to form an idea regarding their general 
behaviour. 
Records relating to R. bursa Males 1-11. 
$ 1. Days 1-3 fixed; on 4th wandered; on 7th found with $ 5 with which he stayed till she dropped 
on the 9th and the <$ was seen to walk away; on 11th approached $ 9; on ]2-l(ith alone and 
fixed; on 17-21st alone, having shifted around scrotum; on 22nd had wandered round scrotum 
to join $ 16 with which he stayed till she dropped on 29th; on 30th he had shifted slightly, 
remaining alone till 36th having shifted on 32nd; on 36th a semi-gorged female (? 17) was 
placed beside him, they remained near each other till she dropped on 41st; on 42nd he had 
shifted, on 43rd he wandered round the scrotum and on 44-46th retraced his steps: on 48th 
shifted slightly and again on 52nd; he remained almost stationary till 60th, shifted round 
scrotum on 62nd, remained fixed till 84th when recording ceased. 
<3 2. Days 1-4 fixed; on 5th has joined $ 5; on 7th shifted 3 mm. to $ 4 which dropped on 10th 
when he shifts downward to near ? 9 which dropped on 13th; on 14th he approaches $ 11 
which dropped 16th; on 17-20th he was alone having wandered round the scrotum; on 
21st he shifted slightly and again 22nd; on 34th he wandered round the scrotum, upward on 
37th, downward on 38th, round scrotum on 39th, and shifted about further on days 43, 46, 
55, 58, remaining fixed till the 62nd day when he had wandered and could no longer be 
identified. 
3. Days 1-5 fixed; on 7th near <$ 2 and $ 4 both of which were gone on 12th; on 14th he was 
near $ 11 with other males, she dropped 16th but he stayed on near the males till 19th when 
he shifted round the scrotum after which he could not be identified. 
The records of the other males are essentially similar and they need not be dwelt on. Suffice 
it to say that 
<$ 4. Sought $ 4 on the 4th, $ 11 on the 5th, $ 8 on the 7th, $ 2 on the 12th, approached $ 14 
on the 18th, and $ 13 on the 19th; he was only seen to copulate with $ 11 and $ 13. 
J 5. Sought 9 8, $ 6, $ 11,? 12, and ? 14; he certainly copulated with ? 6. 
6-11. These merely afforded similar records to the foregoing but none of the males sought so 
many females and two of the males lost their markings at an early date. 
Records relating to R. bursa Females 1-17. 
• 
Female 
dropped 
from host 
on day 
Female 
ceased 
laying 
on day 
Eggs 
began 
to hatch 
on day 
$1. 
Days 1-5 alone, fixed; 
on 7-9th joined by <$ 8 
••• ••• ••• 
9 
40 
46 
-to 
Days 1-7 alone, fixed; 
11 til ... ... ... 
on 10th sought by 4. 
• 
••• ••• ••• 
Fully gorged on 
14 
45 
46 
?3. 
Days 1-3 alone, fixed; 
on 4th found with <$ 4. 
.'j -gorged on 10th 
12 
43 
46 
?4. 
Days 1-4 alone, fixed; 
on 7th joined by $ 3 
••• ••• ••• 
10 
40 
47 
9 5. 
9 
41 
46 
9 6. 
Days 1-6 alone, fixed; 
10-12th 
on 7th joined by <$ 5. 
Fully gorged on 
13 
42 
48 
26—2 
