VARIATION IN ECHINOID PLUTEI 
701 
III. Right Oral Arm, 5 Days 
9 
10 
11 
12 
13 
14 
15 
16 
17 
18 
19 
20 21 
1 
22 
23 
24 
25 
12 

1 

— 


— 
1 
13 
0 
14 
1 
1 
1 
3 
15 
1 
2 
1 
1 
1 
6 
16 
3 
3 
1 
2 
9 
17 
1 
1 
5 
1 
5 
13 
18 
1 
2 
3 
1 
1 
2 
10 
19 
1 
2 
2 
3 
2 
1 
11 
20 
2 
1 
2 
1 
2 
1 
2 
11 
21 
1 
2 
1 
1 
5 
22 
1 
1 
1 
1 
2 
6 
23 
0 
^24 
1 
1 
2 
25 
1 
4 
1 
6 
26 
1 
2 
3 
27 
7 
1 
2 
10 
28 
2 
2 
29 
1 
1 
30 
1 
1 
3 

4 
6 
15 
9 
12 
9 
6 
4 
4 
4 
6 
1 
9 
2 
1 
5 
