1912] 
No. of hauls 
Total Success. 
2 
Depth in 
fathoms 
1 
1. 46 3 
2. 7-12 4 
3. 15-20 2 
4, 25-35 4 
5. 50-75 5 
6. 100-160 7 
7. 200-250 3 
1. 46 1 
2. 7-12 1 
3. 15-20 1 
4, 25-35 1 
1. 46 2 
2. 7-12 2 
3. 15-20 3 
4, 25-35 3 
5. 50-75 3 
6. 100-160 4 
TABLE 28 (Continued) 
[Oye tse) Ke) f=) Be Se ee 
bo oe 
B. 6-10 p.m. 
No. of hours 
Total Success. 
3 4 
.92 otli( 
1.8 .58 
5 () 
1.1 20 
1.9 7 
2.4 82 
1.6 0 
C. 10 p.m.-2 a.m. 
galz/ Salil 
.18 .18 
17 17 
25 25 
D. 2-6 am 
6 
a) 
auf 
.8 24 
IL .4 
1.6 5 
Esterly: Copepoda of the San Diego Region 
303 
No. of animals Frequency 
Total Perhour Haul Time 
rE 6 7 8 
5 .54 33 18 
46 39. 50 32 
0 0 0 0 
2 .82 25 18 
38 19 40 37 
19 Tet) 43 38 
0 0 0 0 
219 1314. 100 100 
284 1550. 100 100 
3 18 100 =100 
il 4 100 100 
0 0 
0 0 0 
0 0 0 0 
5 25 66 33 
2 2 33 40 
60 37 50 31 
In table 29, which follows. there is a summary of table 28 
It seems evident enough that there is a diurnal 
migration of Metridia if the number of hauls may be considered 
by sections. 
large enough to give a reliable basis for a conclusion. 
Total number of animals 
Average per hour for entire time 
Highest average per hour 
Depth of highest hourly average 
Time frequency 
TABLE 29 
Summary of Table 28 
Section A 
6 a.m.-6 p.m. 
10.3 
100-160 f. 
13 
110 
10.1 
39. 
TAl2 £. 
24 
Section B Section C Section D 
6-10 p.m. 
10 p.m.-2 a.m. 2-6 
a.m. 
507. 67 
659.5 13 
1550 37 
10 f. 100-160 f. 
100 22 
