FISHES 49 



Subspecies of S. fontinalis 



S. f. agassizii Garman. Color pale grayish; red spots very few: lakes 

 of New Hampshire. 



S. parkei (Suckley). Dolly Varden trout. Length 500 mm.; 

 weight up to 12 lbs.; head 3.6; depth 4; color olivaceous, the sides 

 with round red spots nearly the size of the eye, the back with smaller, 

 paler ones; rays of dorsal lin 11; anal 9; scales 39-240-36; body rather 

 slender: east and west slopes of the Cascade Range from the upper 

 Sacramento to Montana, and northward into Alaska; common. 



5. alpinus (L.). Saibling; European trout. Length 225 mm.; 

 head 4.5; depth 5; color grayish or greenish above, red beneath; sides 

 silvery, with round red dots; rays of dorsal fin 13; anal 12; scales 195 to 

 200; body elongate, compressed; back not marbled: northern and 

 central Europe; introduced into Starhng Lake, New York. 



S . aureolus 'Qtaxi. American saibling. Length 300 mm.; head and 

 depth 4.2; color dark green above, without motthng; sides silver gray, 

 with small yellow spots; belly orange; fins very large; rays of dorsal fin 

 9; anal 8; scales 35-210-40: Sunapee Lake, Maine and other lakes in 

 Maine and New Hampshire; probably introduced from Europe. 



5. oquassa (Girard). Blueblack trout. Length 300 mm.; head and 

 depth 5; color dark blue above with round red spots on the sides; rays of 

 dorsal fin 10; anal 9; scales 230; body slender: Rangeley Lakes, Maine, 

 and northwards. 



Family 5. ThymallidaB. — Graylings. Body elongate, compressed, 

 slender; head short; mouth terminal; maxillary extending to a point 

 below the middle of the eye; tail forked; adipose fin present; dorsal fin 

 very long and high, with simple anterior and bifurcated posterior rays : 

 I genus. 



Thymallus Cuvier. With the characters of the family: 5 species, 

 all in the cold waters of the northern hemisphere, 2 in the United 

 States. 



T. tricolor Cope (Fig. 24). Michigan grayHng. Length 450; 

 head 5; depth 4.6; color purplish gray; sides with small scattered black 

 spots back of head; dorsal fin spotted and with rose colored and dark 

 stripes; rays of dorsal fin 21 or 22; anal 11; scales 93 to 98: northern 

 ^Michigan; scarce. 



T. montanus Milner. Montana grayling. Similar to T. tricolor, but 

 with dorsal fins a little smaller and with smaller scales; sides with trans- 

 versely elongated spots: upper Missouri basin, above the Great Falls; 

 locally abundant. 



