78 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
Chinook salmon taken in fish-wlieels by Mr. I. II. Taffe, Celilo, Oregon, September 18 to 22, 1896. 
Males. 
Females. 
Date. 
Number. 
Well de- 
veloped. 
Number. 
Well de- 
veloped. 
Total. 
1896. 
Sept. 18 
19 
10 
9 
19 
8 
5 
10 
6 
18 
21 
18 
11 
35 
26 
53 
22 
12 
8 
8 
6 
20 
57 
34 
62 
47 1 
119 
Among the 119 chinook salmon, 13 small ones were found, all males, and their milt as fully 
developed as that in larger fish. Sometimes the wheels take these fish in considerable numbers. 
Chinook salmon taken by Mr. F. A. Seufert, at Celilo, Oregon, September 25 to October 13, 1896. 
In a total of 683 males and 719 females Mr. Alexander found 574 males and 658 females which, in 
his judgment, were nearly ripe. In other words, 84 per cent of the males and 90 per cent of the females 
would have spawned between the first and middle of October. These observations indicate that 
chinook salmon can be obtained abundantly at Celilo by wheels and that if retained a few days they 
would be ripe enough for stripping. Whether the wheels seriously injure the fish can be determined 
only after actual experiment with fish so caught. If the wheels do not injure them they can probably 
be kept until fully ripe in properly constructed retaining boxes or ponds, as was demonstrated by 
experiments at Mapleton, Oregon. 
According to Mr. Alexander chinook salmon appear in the lower part of Puget Sound about the 
1st of May and continue to increase in numbers until July. Scattering ones are taken, however, 
throughout the year in all parts of the sound. 
22. Oncorhynchus kisutch (Walbaum). Silver salmon. 
Our collection contains specimens of this species as follows: 
Three ripe males, one 16 inches in length, caught December 1 in Whoahink Lake, the other two, 
16 and 17| inches respectively, December 3, in Tsiltcoos Lake. Specimens of this size and very much 
smaller were frequently caught in the seine at Acme. Not less than 50 of these were examined. All 
were males with sexual organs as highly dev eloped as in the larger ones. 
One large ripe male from Tsiltcoos Lake, caught in a gill net December 3, 1896. Immaculate, back 
with a bluish tinge, body bright red, mouth much distorted. Locally called “hookbilled silverside.” 
There is a moderately small form of the silver salmon in the Siuslaw River called blueback, 
which resemble the true blueback in size, form, and color, but are more spotted. Two specimens, 8f and 
10 inches in length respectively, from Tsiltcoos Lake near outlet, December 2, 1896. Back, brownish 
blue; dorsal, nearly black, darker on posterior part ; pectorals, light brownish ; ventrals, white; anal 
fin with a dark shade. These specimens were probably hatched during the winter of 1894-95. 
Two specimens from Seattle, Washington, 104 inches in length. 
