72 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



d. Depth of body about .29 of length, its width only about .10 ; length of head 

 .29 of length; the interorbital space about .09 ; maxillary, .12; mandible, .19; 

 scales moderate, thin, partly imbedded in the skin along the back, but not 

 closely imbricated, in number about 20-135-20; branchiostegals about 15; 

 dorsal fin rather high — higher than long ; adipose fin long and narrow, some- 

 what spatulate; caudal fin well forked ; general color red, some\. hat spotted 

 above; size small. {Habitat. — Pacific coast streams, Sacramento River to 

 Eraser's River.) kenxeklyi.* 



The series of OncorhyncM in the National Museum is by no means so 

 complete as is desirable, except in the case of 0. quinnat and 0. kcnncrlyi. 

 0. l^eta, 0. tierlca, and 0. gorhuscha are represented only by skins, mostly 

 dried and moth-eaten, and all in poor condition. A fuller series may 

 show that more than five good species exist, or it may show that 0. 

 quinnat is really only a variety of 0. nerl-a. 



2. SALMO TSUPPITCH Richardson. 



Tsuppitch Salmon. Black Trout of Lake Tahoe. 



1836 — Salmo tsvppitch Richardson, Fauna Bor.-Am. Fishes, p. 224. 

 Salmo tbvjjpitch DeKay, New York Fauna, Fishes, p. — , 1842. 

 *Sa/mo tsuppitch Storer, Synopsis, p. 197, 1846. 



Salmo tauppitcli Herbert, Frank Forrester's Fish and Fishing, Suppl. p. 39, 1850. 

 Salmo tsuppitch Suckley, Nat. Hist. Wash. Terr. p. 327. 

 Salmo* tsiqypitch Gunther, Cat. Fishes Brit. Mus. vi, p. 118, 1867. 

 Salmo tsuppitch Sucicley, Monograph Salmo, p. Ill, 1874. 

 Salmo tsuppitch Jordan, Man. Vert. ed. 2d, p. 358, 1878. 



A fine specimen of a trout from the Clackamas Eiver enables me to 

 make a probably correct determination of the hitherto unidentified Salmo 

 tsuppitch of Eichardson. The specimen seems to be identical with the 

 so-called "Black Trout of Lake Tahoe" (not the "Silver Trout of Lake 

 Tahoe", which is the species termed by Professor Gill and myself 

 S. liensliaicV), of which numerous specimens were collected in Lake 

 Tahoe and in Kern Eiver, California, by Mr. H. W. Henshaw. I feel 

 less hesitation in identifying Eichardsou's tsuppitch with this species, 

 from the fact that the fish does not seem ever to have been renamed by 

 later writers. The following description was taken from the Clackamas 

 Eiver specimen. 



General appearance of Salmo henshatcl, but with smaller scales, 

 smaller, shorter head, and smaller mouth, besides wanting the hyoid 

 teeth. 



Body elongated, somewhat compressed, the dorsal region moderately 

 elevated. Head rather small, pointed and lengthened, its form quite 

 distinctly conic, less convex than in spilurus, the top rather narrow 

 and slightly keeled. Mouth moderate, not large, with rather weak 

 teeth, the maxillary comparatively narrow and not extending much 



* Oncorhynchus kennerhji (Suckley) Jor.— *S'rt?)no kenncrliji, Suckley, ISiM.—Hijpsifario 

 keiinerlyi, Gill, 186A.— Oncorhynchus kennerliji, Jordan, 1878. 



