268 
BULLETIN OF THE BUREAU OF FISHERIES 
Table 25. — Average per cent head is of body length at each centimeter — -Continued 
Length in millimeters 
Macleod 
Harbor, 1927 
Eshamv Bay, 
1926 
McClureBay, 
1927 
Naked Is- 
land, 1925 
Naked Is- 
land, 1927 
Prince Wil- 
liam Sound, 
total 
Dogfish Bay 
Num- 
ber 
Aver- 
age 
Num- 
ber 
Aver- 
age 
Num- 
ber 
Aver- 
age 
Num- 
ber 
Aver- 
age 
Num- 
ber 
Aver 
age 
Num- 
ber 
Aver- 
age 
Num- 
ber 
Aver- 
age 
60-69 
70-79 
80-89 
90-99 
100-109 
1 
26.5 
1 
1 
3 
7 
8 
4 
9 
31 
73 
128 
115 
119 
164 
209 
128 
49 
36 
23 
2 
26.5 
24.6 
24.2 
24.4 
23.9 
23.3 
23.3 
22.8 
22.5 
22.2 
22.0 
21.6 
21.5 
21.3 
21.3 
21.2 
21.3 
21.0 
21.3 
110-119 
120-129 
2 
1 
24.2 
23.0 
' 1 
1 
24.2 
130-139 
140-149 

150-159 
1 
7 
16 
31 
66 
39 
15 
7 
6 
6 
2 
23.3 
23.2 
22.6 
22.4 
22. 1 
22.0 
21.5 
21. 1 
21.0 
21.6 
21.9 
160-169 
1 
1 
5 
13 
12 
5 
8 
14 
9 
3 
2 
1 
23.8 
24.2 
23.4 
22.7 
22.5 
22.8 
22.4 
22.0 
21.8 
20.8 
21. 1 
21. 1 
170-179 
1 
1 
4 
3 
15 
27 
90 
41 
11 
2 
5 
24.1 
22.4 
22.6 
21.8 
21.7 
21.4 
21.3 
21.0 
21. 1 
21.0 
20.7 
180-189 
1 
3 
12 
7 
13 
20 
29 
11 
1 
2 
1 
22.4 
22.4 
22.3 
22.2 
21.5 
21.4 
21.6 
21.1 
21.0 
21.7 
21.2 
1 
4 
7 
19 
27 
8 
1 
2 
4 
2 
23.2 
22.9 
22. 1 
21.8 
21.6 
21.7 
21.7 
21.6 
21.3 
20.8 
190-199 
200-209 
210-219 
220-229 
1 
3 
6 
21 
47 
20 
2 
22.3 
22. 1 
21.8 
21.7 
21.5 
21.3 
19.9 
230-239 
240-249 
250-259 
260-269 
270-279 
280-289 . 
290-299 
300-309 
1 
19.7 
310-319 . 
Length in millimeters 
Lower 
Kachemak 
Bay, 1926 
Lower 
Kachemak 
Bay, 1927 
Halibut Cove, 
1926 
Halibut Cove, 
1927 
Shuyak 
Strait 
Shuyak 
Strait, 
Halibut 
Cove, Lower 
Kachemak 
Bay, total 
Russian 
Harbor 
Num- 
ber 
Aver- 
age 
Num- 
ber 
Aver- 
age 
Num- 
ber 
Aver- 
age 
Num- 
ber 
Aver- 
age 
Num- 
ber 
Aver- 
age 
Num- 
ber 
Aver- 
age 
Num- 
ber 
Aver- 
age 
60-69 
2 
20 
2 
1 
1 
8 
16 
8 
9 
9 
2 
6 
4 
5 
8 
26.7 
26.4 
25.8 
26.6 
26.5 
24.9 
24.8 
24.2 
24.4 
23.9 
22.5 
22.8 
22.2 
22. 1 
22.2 
2 
20 
2 
1 
1 
8 
19 
9 
10 
9 
3 
9 
8 
7 
25 
35 
65 
74 
66 
123 
200 
252 
128 
60 
8 
3 
26.6 
26.4 
25.8 
26.6 
26.5 
24.9 
24.7 
24.2 
24.2 
23.9 
22.6 
23.0 
22.4 
22. 2 
22. 1 
21.4 
21.2 
21.0 
20.8 
20.5 
20.3 
20. 1 
19.9 
19.8 
20.0 
19.2 
70-79 
8(V89 
90-99 
100-109 

110-119 
120-129 
3 
1 
1 
24. 1 
24.4 
22.4 
130-139 
140-149 
^ 
150-159 
160-169 
1 
22.9 
170-179 
3 
3 
1 
8 
8 
15 
13 
9 
3 
4 
3 
4 
1 
23.5 
23.0 
23.0 
22.7 
22.2 
21.8 
21.7 
21.2 
21. 1 
21.5 
21.2 
*20.7 
20.8 
180-189 
1 
21.3 
190-199 
1 
4 
19 
33 
27 
16 
16 
21 
33 
25 
4 
1 
21.7 
21.6 
21. 1 
20.9 
20.8 
20.8 
20.5 
20.0 
20.2 
20.0 
20.0 
19.9 
200-209 - - 
5 
7 
2 
11 
12 
34 
66 
88 
54 
23 
4 
2 
21.5 
21.3 
21.3 
20.6 
20.5 
20. 1 
20.0 
19.7 
19.7 
19.6 
19.9 
19.1 
210-219 --- -- - 
1 
2 
10 
19 
40 
58 
79 
27 
22 
1 
1 
20.6 
20.8 
21.0 
20.6 
20.3 
20.4 
20.2 
19.9 
19.7 
20.2 
19.4 
220-229 - 
13 
13 
10 
30 
51 
49 
18 
10 
2 
21.5 
20.9 
20.9 
20.6 
20.5 
20.3 
20. 1 
19.9 
20.2 
230-239 
240-249. 
1 
10 
26 
25 
19 
19 
5 
19.3 
19.7 
19.8 
20.0 
19.6 
19.9 
19.8 
250-259 -- 
260-269 
270-279 
280-289 
290-299 
300-309 
310-319 
In treating the data the percentages have been averaged for centimeter body- 
length catagories, not using any averages from a category having a frequency of less 
than five. For each centimeter body-length category, the average per cent head 
length was used to calculate the average actual head length for that category. A 
straight line was then fitted to each actual head-length body-length relation by the 
method of least squares. The points on this straight line were then converted into 
