NORTH AMERICAN SALMONIDAE 



251 



specie^ are 1.78 for gorhmcJui and 1.19 for i^erl-a, 

 which gives us some basis for judging the differ- 

 ences between the means of the much smaller sam- 



ples of the other genera. The distributions of gill- 

 raker count are given for Salmo, Salvelinu.s, and 

 Cr'istlvomer in table 20. 



I Pugct Sound to Butedalc, Britisli Columbia. 



' 1925, 1926, 19.14. 



' Prince Rupert, British Columbia. 



' 1946. 



J 1947. 



' Slieena River and tributaries, British Columbia. 



' Fraser River to nortliern British Columbia. 



> 192K, 1930, 1932, 1934. 



' .Morrison Creeli, \ancouver Island, British Columbia. 



i« 1941. 



" Four tributaries of lower Fraser River, British Columbia. 



1" 1940. 



IS Two Moresby Island streams. Queen Charlotte Islands, British 

 Columbia. 



" Five streams in .Masset Inlet, Oraliam Island, Queen Charlotte Islands, 

 British Columbia. 



IS 1946, 1947. 



'• McKenjle River, Oregon. 



" 1934. 



