North American Salmonidce. 313 



siderablj elongated, and the tip decni-ved, extending consider- 

 ably beyond the extremity of the lower jaws. Upon the tip 

 of the lower jaws there exists a knob, more or less broad, and 

 heavily armed with strong curved teetli, as are the premaxilla- 

 ries above. The type of this sub-genus (which I designate as 

 OncorKynclius) is the Salmo Scoulerh of Richardson. 



If my separation of this group from the other salmon is con- 

 sidered as based on sufficiently good anatomical differences, the 

 species above mentioned will hereafter be known as Oncorhyn- 

 chus Scouleri ; OncorJnjnchus Cooperi ; OncorJujnchics ^^roteus ; 

 Oncorhynchais dermatinus ; OnGorhynchus consnettis ,\ and 

 Oncorhynckus canis. In the latter species the projection of the 

 intermaxillaries beyond the lower jaw is not so strongly marked 

 —but the broad knob, and the heavy armature of strong teeth 

 on both that and the premaxillaries exists. 



The species of salmon described by Dr. Girard as the Salino 

 sjyectabilis, I am obliged to present under a new name. 

 This is because there had already been described by Yalencien- 

 nes in his Hist. Nat. des Foissons a species under the name of 

 Salar spectaUlis. I cannot recognise the genera Scdar or Fano, 

 for reasons which will be given in detail in a forthcoming mo- 

 nograph on the Salmonidfe. Therefore, according to my under- 

 standing of the subject, the ISalar' spectaUlis Yal. will become 

 Salrno spectahilis, and Dr. Girard's Salmo will have to receive 

 a new name, which I have accordingly imposed in honor of 

 Archibald Campbell, Esq., the accomplished Chief of the U. S. 

 N. W. Boundary Commission. Salmo Gamphell^ Nob. 



Tins species is the beautiful red-spotted salmon-trout of the 

 North Western waters, known to the Skagit and Nisqually 

 Indians as the che-wah or che-wagh. 



Fur further remarks concerning this species and the S. canis, 

 those interested are referred to the " Natural History of AVash- 

 ington Territory," published in 1860 by Bailliere Brothers, 

 New York, and to the same text appearing in the Pacific KR. 

 Reports, vol. xii., part 2. 



