332 
ZOOLOGY. 
entirely removed, the projecting under edge of the articular piece of the lower jaw is acutely 
serrated, in which respect this species differs from all the others received from Dr. G-airdner. 
There are 64 vertebrae in the spine.” —(Rich, in F. B. A., p. 222.) 
Dr. Gairdner says that this species ascends the Columbia in June, “in smaller numbers than 
the quinnat , in whose company it is taken. Its average weight is between six and seven 
pounds. ” The great difference in size is another strongly marked distinction between this 
species and the quinnat. Dr. Gairdner also gives the dimensions of a fish having an extreme 
length of 31 inches, in which the length from the snout to the anterior margin of the dorsal 
was 12 inches. In his measurements of a S. quinnat of 30 inches extreme length, the distance 
between the same points was 13 inches. According to this it seems that the dorsal fin in the 
quinnat is placed comparatively a little further behind. 
The two dried skins examined by us are so much shrivelled that the relative distances 
between the fins cannot be accurately determined. 
The S. gairdneri differs from the paucidens * in having larger teeth, in attaining a much 
larger size, and in not having a forked tail. 
In 1856 we noticed a salmon which had been caught at an Indian fishery on Green river near 
Puget Sound, which seemed to have been either a variety of the present species or nearly 
related to it. It was more slender than the Toioatl (? quinnat,) and although it had good 
flavor and seemed in excellent condition, its flesh was loliite. This fish was bright and silvery 
externally, and appeared to be fresh run from the sea. It was about 28 inches in length and 
quite slender. 
The Puget Sound Indians take a salmon in summer which is known to the Skadgetts as the 
yoo-mitch, and to the bands speaking the Nisqually dialect as the satsup. This they consider to 
be the best of all the kinds of salmon which they catch. It commences to run up the fresh 
water streams about June 15, and continues ascending until about the middle or end of August. 
As the period of arrival of this is so much like that of the gairdneri on the Columbia, we are 
inclined to consider them identical, and regret exceedingly that we preserved no specimens for 
study and comparison. The flesh of the kind—whatever it may be—is of a beautiful salmon- 
red, and in general estimation for the table, is the favorite of both whites and Indians. When 
exhausted and emaciated from spawning, it is called, in common with several other species, 
Yoke or Yoek. 
SALMO GIBBSII, Suckle y. 
Columbia Salmon Trout; Gibbs’s Salmon. 
Syn.— Fario tsuppitch, Grd. in Proc. Acad. N. Sc. Phil, viii, 218, 1856.— Grd. Rep. on Fishes, U. S. P. R. R. Surveys, 
318, 1858. [Non Salmo tsuppitch , Richardson.] 
S. Gibsii, Sdckley, Annals N. Y. Lyceum, 1858. 
Black-spotted, Salmon-trout, Lewis & Clark. 
Figures.- —The typical specimen of the present species is figured as F. tsuppitch, in this volume, Fishes, PI. LXIX. 
Sp. Ch. —Body elongated, compressed, fusiform in profile; dorsal profile but slightly arched; snout rounded, the jaws sub¬ 
equal; maxillary gently curved, dilated posteriorly, and extending to a vertical line passing slightly behind the orbit; anterior 
margin of dorsal nearer the extremity of the snout than to the insertion of caudal fin; colors of the head and back, in the fresh 
specimen, rich dark olive-green, profusely dotted with roundish black spots, the scales in certain lights showing bright 
silvery reflections; sides below the lateral line are usually unicolor, of a yellowish white; inferior fins unspotted; tail and 
upper fins yellowish olive, profusely spotted with round and oval spots of black, each spot being from one to two lines in 
* This is, if we admit the paucidens to be a species, the characters of which are based on the description of an adult. 
