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University of Washington Publications in Biology 



[Vol. 2. 



10b. Scales 135 to 160 (usually 140 to 150) in the lateral 

 line ; 27 to 32 above and 25 to 30 below the lateral line. 

 Range : Upper Fraser River basin and the middle and 

 upper Columbia River in northeastern Washington. 

 Marine and freshwater. Abundant. 



Kamloops Trout. Rainbow Trout 



41. Salmo gairdncrii kamloops Jordan 



6b. Species with light spots (white or gray) on a darker background 

 of color ; often with red spots on the sides ; over 190 scale rows 

 crossing the lateral line; vomer boat shaped (the shaft de- 

 pressed), shaft without teeth. 



11a. 



Vomer with a raised crest extending backward from 

 the head of the bone, this crest armed with strong 

 teeth ; species gray spotted, without red spots ; fins 

 not markedly bright edged. Range : Northeastern 

 United States ; Great Lakes region ; Columbia and 

 Fraser rivers. Freshwater. Not common. Fig. 31. 



Lake Trout. Mackinaw Trout 



.42. Cristivomer namaycush (Walbaum) 



lib. 



Fig. 31. Lake Trout. Mackinaw Trout. 

 Cristivomer namaycush. After Schultz and 

 Hanson. Courtesy of the Washington 

 Sportsman. 



Vomer without a raised crest which extends back- 

 ward, head of bone toothed ; species red-spotted in 

 life, the lower fins with bright silvery edgings. 



12a. Back unspotted, but strongly mottled with olive 

 and black, that is, the spots run together causing 

 the mottled appearance ; dorsal and caudal finely 

 mottled; body robust or stout, the head heavy. 

 Range : Northeastern North America. Introduced 

 into the western States. Freshwater. Common. 

 Fig. 32. 



Eastern Brook Trout 



43. Salvclinus fontinalis (Mitchill) 



Fig. 32. Eastern Brook Trout. Salvelinus 

 fontinalis. After Schultz and Hanson. Cour- 

 tesy of the Washington Sportsman. 



