Broad Whitefish; Muksun 



from which it was supposed to differ in its somewhat more slen- 

 der body, shorter pectoral and ventral, lower dorsal, and smaller 

 scales. The two are probably not distinct. 



The waters of the Missouri Basin from which whitefish have 

 been reported are the Yellowstone, Madison, Redrock, Beaverhead, 

 Gibbon and Gallatin rivers, Horsethief Springs, and Big Goose 

 Creek, a tributary of Tongue River, Wyoming. 



Broad Whitefish; Muksun 



Corcgoniis kennicotti Milner 



This species, known also as Kennicott's whitefish, and the 

 Delta whitefish, was described from Fort Good Hope, British 

 America, in 1883. Since then it has been observed in the Meade, 

 Kuahroo, Kuwuk and Yukon rivers of Alaska, and in Great Bear 

 Lake. These localities indicate its known geographic range. 



The broad whitefish is one of the largest species of the genus. 

 It reaches a weight of 30 pounds, and as a food-fish is held in 

 high esteem. It is said by Dr. Dall to be abundant in the Yukon 

 in both winter and summer, and that it spawns in September 

 when it enters the small tributary streams. 



Nothing is known as to its game qualities or other habits. 



Head 5I; depth 4f; eye 5-J-; D. 1 1 ; A. 14; scales 10-87 to 

 90-10. Head small and very blunt; mouth inferior, the high blunt 

 snout but little projecting; premaxillaries wide and vertically placed; 

 maxillary reaching slightly beyond vertical at front of eye; preor- 

 bital narrow, its greatest width only \ its length, or \ diameter 

 of eye; gillrakers 6 or 7+14, short and slender; tongue with a 

 round patch of weak, bristle-like teeth, resembling those of the 

 inconnu; adipose fin large, a wide strip at base covered with 

 small scales. Colour, probably very dark in life; fins all blackish in 

 spirits, with a bluish tinge, 



Richardson's Whitefish 



Coregoiius richardsonii GiJnther 



Only the type specimen of this species is known. It was 

 described from some unknown locality in British America. 



It is very similar to the common whitefish, also to the broad 

 whitefish, with which it may prove identical. Nothing is known 

 regarding its habits or food-value. 



