[Footnote 1: SPECIFIC CHARACTERIZATIONS OF THE GRAYLINGS +--------------------+------------------+---------------+---------------+ | | T. signifer | T. tricolor | T. montanus | +--------------------+------------------+---------------+---------------+ |Head in length | 5-1/2 | 5 | 5 | +--------------------+------------------+---------------+---------------+ |Depth in length | 4-2/3 | 5-1/2 | 4-1/2 | +--------------------+------------------+---------------+---------------+ |Eye in head | 3 | 4 | 3-1/2 | +--------------------+------------------+---------------+---------------+ |Maxillary in head | 6 (?) | 2-1/2 | 3 | +--------------------+------------------+---------------+---------------+ |Scales | 8-88 to 90-11 | 93-98 | 8-82 to 85-10 | +--------------------+------------------+---------------+---------------+ |Gill-rakers |12 below the angle| 7 + 12 | 5 + 12 | +--------------------+------------------+---------------+---------------+ |Dorsal rays | 20-24 | 21-22 | 18-21 | +--------------------+------------------+---------------+---------------+ |Height of dorsal fin| 3-1/2 in length |5-1/2 in length|4-1/2 in length| +--------------------+------------------+---------------+---------------+] CHAPTER VII THE SALMON FAMILY (_Salmonidæ_) This is quite an extensive family, embracing the salmons, trouts, and whitefishes, and is characterized principally by an adipose fin and small, smooth scales. It is my province to consider only the Rocky Mountain whitefish and the cisco, as the salmons and trouts are described in another volume of this series. There are a number of whitefishes, but none of them can be considered game-fishes except the one about to be described, as they rarely or never take the fly or bait. _Coregonus williamsoni._ Rocky Mountain Whitefish. Head 4-1/2 to 5; depth 4 to 5; eye 4-2/3; D. 11 to 14; A. 11 to 13; scales 8 to 10-83 to 87-7 to 10; body oblong, little compressed; head short, conic, the profile rather abruptly decurved; snout compressed and somewhat pointed at tip, which is below the level of the eye; preorbital broad, 2/3 the width of the eye; maxillary short and very broad, reaching to the anterior margin of eye, and is contained 4 times in length of head; mandible 3 times; gill-rakers short and thick, 9 + 15; pectoral fin 1-1/5 in head; ventral 1-2/5; adipose fin large, extending behind the anal fin. _Coregonus williamsoni cis-montanus._ Montana Whitefish. Head 5; depth 5 to 5^1; pectoral fin 1^1 in head; ventral 1-4/5; scales 90. Otherwise like the typical form.