NORTH AMERICAN SALMONIDAE 



247 



dorsal-ray counts, siiir<resting a closer approach to 

 the other genera. This coincide^s with the distant 



relation of JxlKutch to the other Oncorhynchus 

 species as shown in figure 2. 



Table 13. — Count of dorsal Jin rays in Xorth Atnerican- Salmonidae 

 [Count adjusted to complete count (see text); x indicates rays present in frequency column, but numbers not given) 



1 Chamberlain (1907), southeastern Alaska, complete count. 

 ' Foerster and Pritchard (1935a), southern British Columbia and Puget 

 sound, data adjusted by adding 3 rays. 

 ! McCrimmon (1949). 

 « Shapovalov (1947), 2 rays added. 



Vertebrae 



Because the methods used in counting vertebrae 

 vary, it is difficult to place all counts on a com- 

 mon basis. Vladykov (1954) says that "all verte- 

 brae were counted, including three of the hy- 

 pural." DeLacy and Morton (1943) state "In the 

 ui)-turned posterior end of the vertebral column 

 the fused vertebrae were counted as one." Wilder 

 (1952) says "In counting the vertebrae the uro- 

 style was excluded." 



' Mottley (1936), Kootenay Lake, British Columbia (2 rays added, standard 

 deviation, 0.5. 

 ' Vladykov (1954), complete count. 

 ' Wilder (1952), Nova Scotia, complete count. 

 ' DeLacy and .Morton (1943), Karluk, Alaska, count may be incomplete 



Obviously, vertebral counts of diti'ei-ent investi- 

 gators may difi'er by as much as three vertebrae, 

 according to their method of recording. To place 

 all counts on a comparable basis (using the total 

 count) some of the published counts must be in- 

 creased by either two or three vertebrae. Data 

 on vertebral counts are meager. Mottle}' (1937) 

 gives data, shown in table 14, which include (X)unts 

 for all of the Xorth American Salmo. 



Table 14. — Count of vertebrae in genus Salmo 



[Counts from Mottley, 1937] 



' Cowichan River, Vancouver Island, 1931; reared at Cowichan hatchery. 

 ' Rcdfish Creek, 1930. 

 ' Lardeau River, 1930. 



* Pena.sk Lake. 1930; reared at Nelson hatchery. 



• Paul Creek, 1931. 



' Paul Lake, 1931; reiu-ed at Lloyd's Creek hatchery. 

 ' Paul Lake, 1932. 



63T056 0—62 3 



» Paul Lake. 1932; reared at Lloyd's Creek hatchery. 



' 6-mile Lake, 1930. 



"> 6-mlle Lake. 1930; reared at Nelson hatchery. 



" Cottonwood Lake, 1930; reared at Nelson hatchery. 



i> Wisconsin stock, 1931; reared at Cowichan hatchery. 



" From Thurso River, Scotland, 1933; reared at Cowichan hatchery. 



