Rickett.—Fertilization in Sphaerocarpos. 231 
Table I. 
Cases of Fertilization. 
Time after 
flooding. 
No. of 
Phase. Series. 
Hrs. Min. 
cases. 
1. C 
° 45 
1 
A 
0 55 
8 
C 
1 30 
9 
A 
1 40 
8 
C 
2 
4 
30 
2. 
C 
4 
6 
C 
6 
5 
A 
7 
4 
C 
8 
1 
C 
20 
2 
c 
25 
i 
* 
l 9 
3 - 
c 
14 
2 
c 
18 
4 
A 
18 30 
2 
C 
22 
2 
C 
28 
1 
C 
32 
1 
12 
4. c 
28 
2 
A 
28 
5 
B 
30 
5 
C 
32 
6 
B 
36 
1 
B 
3S 
2 2 
B 
40 
9 
C 
40 
4 
C 
42 
3 
C 
44 
4 
B 
44 
15 
C 
46 
3 
C 
48 
5 
A 
48 
15 
C 
5° 
1 
C 
52 
2 
c 
53 30 
2 
B 
64 
7 
D 
65 30 
I 
D 
67 30 
2 
108 
Time after 
flooding. No. of 
Phase. 
Series. 
Hrs. Min. 
cases. 
5- 
C 
28 
1 
C 
42 
5 
c 
44 
[ 
B 
49 
0 
dj 
B 
52 
10 
C 
53 
30 
2 
B 
56 
8 
C 
59 
30 
3 
B 
60 
7 
D 
62 
3° 
5 
C 
64 
1 
D 
65 
3° 
1 
C 
66 
29 
D 
75 
45 
1 
D 
84 
1 
77 
6. 
C 
59 
30 
1 
B 
60 
4 
B 
64 
1 
D 
7 1 
30 
1 
D 
73 
45 
1 
8 
hr 
i • 
B 
60 
3 
B 
64 
2 
D 
6 5 
3° 
s 
D 
67 
30 
11 
A 
68 
9 
D 
75 
45 
7 
D 
84 
1 
B 
105 
30 
1 
% 
42 
8. 
B 
64 
2 
A 
68 
1 
D 
30 
1 
4 
9 
B 
64 
1 
A 
100 
3° 
4 
5 
10. 
D 
7 1 
3° 
1 
D 
84 
2 
B 
105 
30 
2 
Total 310 
The egg is large and ovoid, measuring about 40 by 20 /*. It does 
not quite fill the cavity of the venter. This is partly because of the 
disintegration of the ventral canal cell. There seems to be no considerable 
