SUCKLEY MONOGRAPH OF THE GENUS SALMO. 141 



rently short, narrow tail, and its thin silvery scales, so easily detached. 



Hab. — Obtained from the waters of Puget Sound and the streams in 

 that vicinity by Drs. Kennerly, Cooper, and Suckley. 



This trout abounds in the fresh-water streams emptying into Puget 

 Sound, and are not unfrequeutly caught in tide-water. It is known to 

 the ISTisquallies and Puyallups as the Icwmptl or sJcwuss-puttl. 



Mr. Gibbs obtained at Skagit Eiver Rapids July 29, 185S, a small 

 salmon or trout which the Indians said did not go to salt-water, called 

 by them isee-tseh ; white beneath ; back, grayish-olive. Its length does 

 not exceed 10 inches. 



31. SALMO GIBBSII, Suckley. 



COLUMBIA SALMON TEOUT ; GIBBS' SALMOIf. 



SY^.—Fario tstqipitch, Grd., in Proc. Acad. N. Sc, Phil., viii, p. 218, 1856;— 



Grd., Eep. on Fishes, U. S, P. R. R. Surveys, p. 318, 1858. IXon 



salmo tsupintch, Richakdsox.] 

 S. (jibhsii, Suckley, Annals N. Y. Lyceum, 1858 ; — Ibid., Nat. Hist. 



Wash. Ter., p. 332 ;— IisiD., P. R. R. Repts., xii, 332. 

 Black-spotted Sahnoit-troufj Lewis and Clarke ; — Shoosliines of the 



Walla-Walla. 

 Fi'jures. — The typical specimen of the jiresent species is figured as 



F. tsupintch, in P. R. R. Rept. FLshes, vol. xii, PI. Ixix. 



Sp. Ch. — Body elongated, compressed, fusiform in profile; dorsal out- 

 line but slightly arched; snout rounded, the jaws sub-equal; maxillary 

 greatly curved, dilated posteriorly, and extending in a vertical line 

 passing slightly behind the orbit; anterior margin of dorsal nearer the 

 extremity of the snout than to the insertion of caudal tin ; colors of 

 the head and back, in the fresh specimen, rich, dark olive-green, pro- 

 fusely 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 tins unspotted; tail and 

 upper tins yellowish olive, profusely spotted with round and oval 

 spots of black, each spot being from one to two lines in diameter, and 

 completely isolated from the others, not confluent, as in some other 

 species; caudal fin moderately lunated, not forked; head, small; teeth, 

 small and very numerous, especially on the labials; length of the full 

 grown adult rarely exceeds two feet. 



Hab. — The Columbia Eiver and its larger affluents. The species is 

 not anailromous, but remains in fresh water throughout the year — so say 

 the Indians. 



In the typical specimen of this species (Smithsoii. Cat., 910) the length 

 of the head, taking the extreme distance from Wia tip of the snout to 

 the farther margin of the operculum, enters six times in the total length 

 of the tish. Its length fi'om snout to nape is contained nine times in the 

 same. In its affinities this salmon appears in structure nearly related 



