302 BULLETIN OF THE BUREAU OF FISHERIES 
Percentages of the several species of copepods in vertical hauls, February to May, 1920, identified and 
tabulated by Dr. C. B. Wilson — Continued 
Station number.. 
20104 
20105 
20106 
20107 
10108 
20109 
20110 
20111 
20112 
20113 
20114 
20115 
20116 
20117 
201 If 
Month 
April- 
-Continued 
Day of month 
15 
15 
15 
16 
16 
16 
16 
17 
17 
17 
17 
18 
18 
18 
20 
Depth in meters 
45-0 
125-0 
40-0 
240-0 
135-0 
155+0 
80-0 
65-0 
290-0 
230-0 
175-0 
295-0 
200-0 
85-0 
90-0 
VERTICAL NET 
Acartia clausi 
1 
2 
50 
2 
45 
2 
6 
25 
2 
1 
4 
20 
20 
15 
Acartia longireinis 
1 
4 
10 
10 
1 
4 
10 
5 
Aetidius armatus 
1 
1 
Calanus finmarchieus... 
25 
60 
20 
60 
35 
60 
60 
60 
50 
54 
75 
50 
55 
65 
75 
Calanus hyperboreus 
1 
7 
20 
5 
5 
10 
2 
1 
4 
5 
1 
5 
Centropages typicus 
S. 1 
1 
Dwightiagracilis 
5 
Euealanus elongatus 
1 
Euchgeta norvegica. 
2 
1 
4 
2 
Eurytemora herdmani 
1 
Halithalestris eroni 
1 
T 
1 
Metis ignsea 
1 
1 
Metridfa longa 
10 
20 
2 
2 
5 
10 
3 
5 
25 
20 
3 
20 
i 
1 
i 
Metridia lucens 
16 
6 
1 
20 
5 
10 
3 
5 
3 
16 
15 
1 
2 
2 
2 
Paracalanus parvus. 
2 
7 
8 
1 
Pleuromamma gracilis 
1 
Pleuromainma xiphias 
1 
Pseudocalanus elongatus 
45 
3 
1 
10 
2 
5 
5 
5 
5 
7 
4 
i 
2 
2 
2 
Rhincalanus nasutus 
1 
Temora longicornis 
1 
1 
1 
1 
1 
1 
1 
1 
Temora turbinata 
1 
Development stages. 
C 
F 
F 
c 
c 
A 
Number of adult cope- 
pods per square meter 
of sea surface (approx- 
imatei 
2, 600 
130, 000 
6, 000 
4,800 
47, 250 
1, 000 
2, 800 
9, 000 
8, 600 
5,600 
20, 000 
20, 000 
28,000 
17, 500 
5, 000 
Station number 
20120 
20121 
20122 
20123 
20124 
20125 
20126 
20127 
20128 
20129 
Month 
May 
Day of month 
4 
4 
7 
16 
16 
16 
17 
17 
17 
17 
Depth in meters 
48-0 
55-0 
95-0 
55-0 
90-0 
140-0 
155-0 
145-0 
70-0 
160-0 
Acartia clausi 
10 
15 
15 
8 
10 
7 
5 
5 
5 
1 
Acartia longiremis 
5 
2 
5 
8 
1 
1 
5 
5 
2 
Aetidius armatus. 
T 
1 
Calanus finmarchieus 
40 
60 
60 
80 
75 
80 
80 
80 
80 
80 
5 
2 
3 
3 
5 
1 
1 
Candacia armata 
2 
1 
Centropages typicus 
i 
1 
1 
i 
l 
Halithalestris croni 
i 
1 
] 
l 
Metridia longa 
10 
2 
3 
i 
2 
3 
3 
2 
2 
2 
Metridia lucens 
30 
2 
3 
1 
2 
1 
2 
2 
Paracalanus parvus 
1 
2 
1 
1 
2 
2 
Pseudocalanus elongatus 
1 
15 
5 
8 
4 
1 
1 
10 
2 
1 
1 
1 
1 
1 
1 
2 
A 
A 
C 
c 
F 
Number of adult copepods per square 
meter of sea surface (approximate).. 
55, 000 
12,600 
27, 750 
14, 000 
77, 000 
21, 750 
28, 750 
28, 500 
21, 250 
