SUCKLEY MONOGRAPH OF THE GENUS SALMO. 97 



The species was not yet quite ready to spawn, and does not do so till 

 after the ta-ah-nia, (8. cooperi) A specimen in Dr. Kenuerly's col- 

 lection appears to be that of a female of this species, taken from the 

 salt water when in prime condition. It was obtained at New Dungeuess, 

 Straits of Fiica, in August, 1857, and was called by the Indians of that 

 locality the kutsh-lcusfi, the name thej' are known to apply to the >S'. 

 scoideri. There is nothing remarkable about the specimen except its 

 bright silvery appearance, which, however, the species always has while 

 yet in the salt water. It has also 14 to 15 branchiostegals, one more 

 than is usual. In a paper entitled " Notices of certain New Species of 

 North American Siilmonidiie," published by the writer in June, 18C1, I 

 proposed a distinct sub-genus for the group of salmon embracing this 

 species, the >S^. scoulerl, 8. 2)rofeus, and S. cooperi, in which the adult 

 males have the premaxiilaries considerably elongated, and the tip de- 

 curved, extending considerably beyond the extremity of the lower jaws 

 where there exists a knob at the extremities more or less broad, and 

 heavilj" armed with strong curved teeth, as are the premaxiilaries above. 



The type of this sub-genus (which I designate as Oncorliynclius) is 

 the Salmo scouleri of Eichardson. If my separation of this group from 

 the other salmon is considered as based on sufficiently good anatomical 

 differences, the species above mentioned will hereafter be known as 

 OncorhyiicJius scouleri, Oncorhynchus cooperi, Oncorhynchus protem, On- 

 corliynclius dermatinus, Oncorliynclius consuetus, and Oncorliynclius cams. 



In the latter species the projection of the intermaxiliaries 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 premaxiilaries exist. 



2. SALMO PEOTEUS, Pallas. 



HUMP-BACKED SALMON. 



Specimen in Smithsonian collection Fishes, No. 1132. 



Syn. — Salmo proteus, P^iXLAS, Zoog. Eos. Asiat. iii, p. 376 ; VALE^ic. in Cuv. and 



Valexc. Hist. Nat. Poissons, xxi, p. 360, 1848 ; Suckley, Nat. Hist. Wash . 



Territory, p. 339, 1859 ; Ibid., P. E. E. Eepts., vol. xii. 

 Salmo gibber, Suckley, Ann. N. Y. Lyceum Nat. Hist., Dec, 1858. 

 Salmo dermaiinus, Eich., Voy. of Herald, 1854. 

 Oncorhynchus proteas, Suckley', Notices of Certain New Species of Salmon. 



N. Y., .June, 1861. 

 Gorbuscha ot Kamtschatka ; Hiinnun of the Lummies ; Ruddoli of the Nis- 



quallies. 



Sp. Ch. — Male. — Dorsal profile much more arched than in S-. scouleri, 

 Eich. After entering fresh water, an adipose hump becomes strikingly 

 apparent, its greatest prominence being nearly ojiposite a point midway 

 on a line drawn from the eye to the anterior margin of the base of the 

 dorsal fin ; intermaxillary projection curved strongly downward, as in 

 8. scouleri; jaws long, as in latter, the latter terminated by a dilated 

 knob, (as in several other species of the genus,) which is armed with four 

 S. Mis. 74 7 



