100 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



developed much as in tlie female 8. scouleri. lu botli sexes there are 

 usually thirteen branchiostegal rays on a side. , 



DiaGtNGsis. — From >S'. proteus, Pal., by the comparatively small hump, 

 by its smaller size, and by its proportionately larger scales. From 

 the S. scouleri it may be known by its smaller size, spotted tail, and 

 small uniform teeth along the bodies of the maxillaries. 



Hab. — Auadromous, ascending the Columbia in autumn. Found ex- 

 ceedingly abundant in Okina-kane River, where it is known to the whites 

 as the "little red salmon," and to the natives as the ta-ah-nia. 



This species, which we have named after Doctor James G. Cooper, 

 who has spent much time investigating the natural history and physical 

 geography of Washington Territory, was obtained by George Gibbs, 

 esq., at the Okina-kane. 



8. coojyeri. Two specimens (typical) were obtained by Mr. Gibbs. 



" Okina-kane Eiver, September 30, 1860. This fish is now drawing 

 to its spawning season. It frequents this river and the lakes above in 

 immense numbers, its pecidiar color actually reddening the bed of the 

 river. 



" Measurements. — Male. Length, 21.75 inches ; head, 5 ; to dorsal 

 •fin, 10; to ventral, 10.50; to anal, 14; to adipose, 16. Upper line of 

 head very concave ; iris, yellow ; body, brick-red ; near the tail, scarlet ; 

 caudal brown, profusely speckled with black. Female. Leugth, 22 

 iuches; head, 4.50; to dorsal, 10; to ventral, 11; to anal, 14.75; to adi- 

 pose, 16.75. 



" Colors. — Head, light greenish; back, brick-red, inclining to purple ; 

 belly, dirty, yellowish gray ; caudal, speckled ; upper line of the head 

 convex — the reverse of that of the male ; eggs red and of the size of 

 swan-shot; caudal but slightly lunated. 



"The fish measured above appear to be about the average size of 

 adults." 



4. SALMO DEEMATIXUS, Richardson. 



Syx. — Sahno dcrmatinus, Rich. Zool. of the Voyage of the Herahl, p. 169. PI. 



xxxiii. London, 1854, 

 ? Sahno proteus, Rich. 



f Salmo gibber, Suckley, Annals N. Y. Lyceum. 

 Oncorhynchus dermatituis, SucKLEY, "Notices of Certain New Species of the 



Salmonid;B," &c. N. Y., June, 1861. 



Sp. Ch. — (Condensed from Richardson's description.) Tongue, tooth- 

 less; seven or eight teeth on each premaxillary, unequal ; one or two at 

 the tip larger than the others, recurved. Maxillary armed with 18 to 

 21 acute subculate teeth, the first being stoutest, third and fifth next in 

 size. Dilated knob on end of lower jaw, armed with strong teeth. This 

 meeting the incurved snout (in males only *?) prevents the closing of the 

 mouth. Scales do not overlap each other, but are imbedded in a thick 



