332 ZOOLOGY. 



entirely removed, the projecting under edge of the articular piece of the lower jaw is acutely 

 serrated, in which respect this species diiiers from all the others received from Dr. Gairdner. 

 There are 64 vertebra 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 tlie 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 jjoints 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 bo accurately determined. 



The S. gairdneri differs from the pcn(cu?en.s* in having larger teeth, in attaining a much 

 larger size, and in not having a forJced 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 Toivatl (? quinnat,) and although it had good 

 flavor and seemed in excellent condition, its flesh was white. 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-mitcJi, and to the bands speaking the Niscjually dialect as the salsup. This they consider to 

 be the best of all the kinds of salmon which they catch. It commences to run up the fresh 

 Avater 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, 

 Yolce or Yocl: 



SALMO GIBBSII, Suckle y. 



Columbia Salmon Tront ; Gibbs's Salmon. 



Syn. — Fario tnippitch, Grd. in Proc. Acad. N. Sc. Phil, viii, if[8, 18.56. — Grd. Rep. on Fialies, U. S. P. R. R, Surveys, 

 318, 185'^. [Non Salmo tsuppilch, Richardson.] 

 S. Gibsii, Suckley, Annals N. Y. Lyceum, 1858. 

 Black-spoltnl Salmon-trout, Lewis & Clark. 

 Figures. — The typical specimen of the present species is figured as F. tsuppiteh, in this volume, Fishee, PI. LXIX. 

 Sp. Ch. — Body elongated, compressed, fusiform in prufile; dorsal profile but slightly arclied; snout rounded, the jaw5 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, pro/itseii/ 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. 



