99 



Fig. '2. Thr«n! curves showing tlio variation ol tlu' three localities represented 



from tlio Friizer system : 



Gritfui Lake, l,t>00 ieet, 17 specimens. 

 Sicamons, 1,800 feet, 58 specimens. 

 Mission, 1 foot, 79, specimens. 

 Fi^. ;*». Three curves showing tlie variati(»n : 



((, of 234 specimens from 1,000 to 2,000 feel elevation; 



/(, (broken line) l>SS specimens from 2,000 to 3,000 feet elevation; 



c, 189 specimens from 1 to 1,0<X) feet elevation. 

 Fig. 4. Variation of 99 specimens from Caldwell, 2,372 feet. 

 Fig. r>. ^'^ariation of 23 specimens from La (xrande, 2,786 feet. 

 Fig. (J. Variation of 70 specimens from Little Spokane, 1,850 feet. 

 Fig. 7. Variation of 79 specimens from Mission, 1 foot. 

 Fig. 8. Variation of 1 54 specimens from Payette River, 2,150 feet. 

 Fig. 9. Variation of 20 specimens from Pendleton, 1,070 feet. 

 Fig. l(t. Variation of 16 specimens from Clear Water, 750 feet. 

 Fig. 11. Variation of 14 specimens from Brown's Gulch, 5,344 feet. 

 Fig. 12. Variation of 67 specimens from Small Creek, 2,100 feet. 

 Fig. 13. Variation of 47 specimens from Lake Washington, 1 foot. 

 Fig. 14. Variation of 22 specimens from Umatilla, 300 feet. 

 Fig. 15. Variation of 21 specimens from Colville, 1,200 feet. 

 Fig. lt>. Variation of 18 specimens from ( lolden, 2,550 feet. 

 Fig. 17. Variati<m of 13 specimens from Skooknmchuck, 204 feet. 

 Fig. 18. Variation of 11 specimens from Hangman's Creek, 1,900 feet. 

 Fig. 19. Variation of 12 specimens from Flat Head Lake, 3,100 feet. 

 Fig. 20. Leuckcus baltealu-'i fnmi Mission, the specimen now in the British Museum. 

 Fig. 21. Ij€iici.^cu>i gilli, from Brown's (nilcli. 

 Fig. 22. Ijeuciscii^ hijdrophlojr. 



The last two cuts are reprothured hy permission of Hon. Marshall McDonald, 

 V. S. CVunmissioner f>f Fish and Fisheries. 



Tjti: RKi>-rrsif oi rjti: Ikaiio Lakis. I'v I!. \V. Kvkkmann an'[>.T. T. Scovell. 



