Table I. Eecord of Points investigated in each specimen.
Nos. 1 50 are males ; Nos. 51 100 females. * denotes that the specimen is
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an older embryo.
No. of specimen.
Girdle-piercing
nerves.
Post -girdle
nerves.
No.
of nerves to
collector.
Whole
vertebrse.
1
35
10
9
45
- 2
35-36
10
11
46
8
35-36
10
11
46
4
35-36
10
11
46
- 5
35-36
10
11
47
- 6
35-36
10
10
46
7
35-36
10
9
45
8
35-36
10
9
45
9
35-36
10
9
46
- 10
J 35-36
| 36-37
11
10
121
13 /
46
11
r 3i> l
\ 36-37 /
9
12
46
- 12
36-37
11
12
48
- 13
38-37
11
11
46
- 14
36-37
11
9
48
15
36-37
10
11
48
16
36-37
10
11
47
17
36-37
10
11
47
18
36-37
10
11
47
- 19
36-37
10
10
49
20
36-37
10
10
48
- 21
36-37
10
10
47
- 22
36-37
10
10
46
- 23
36-37
9
12
47
- 24
36-37
9
11
47
25
36-37
9
11
46
26
36-37
9
10
47
- 27
36-37
8
11
46
- 28
36-37
7
10
48
- 29
37
9
10
47
30
37
9
10
47
31
37
9
10
47
32
37-38
10
11
46
- 33
37-38
10
11
47
34
37-38
10
11
47
35
37-38
9
12
46
36
37-38
9
11
48
- 37
37-38
9
10
47
38
37-38
g
10
47
- 89
37-38
9
10
48
- 40
37-38
9
10
48
41
37-38
8
12
46
- 42
38
7
10
48
43
38-39
10
12
47
44
38-39
10
9
48
45
38-39
9
12
48
46
38-39
9
12
48
47
38-39
9
12
48
48
38-39
9
11
47
- 49
38-39
9
11
51
50
38-39
8
U2J
47
51
35-36
9
9
46
