46. SALMOXID^ SALYELIXUS. 
319 
margins yellowisli white. Body long and slender; head rather small, 
the snout blunt; mouth not large, the maxillary reaching posterior mar- 
gin of orbit in male only ; teeth very small ; teeth on the middle line of 
the hyoid bone; angle of preopercle much rounded; gill-covers without 
concentric striae ; pectoral not longer than the head without snout ; ven- 
trals not to vent ; caudal deepl 3 ’ forked ; scales minute. Head 4^ ; dei)th 
6-0. D. 11; A. 9; B. 11; coeca 28-42; vert. 03. L. 12 inches. {Giinther.) 
Lakes of Arctic America, Discovery* Ba\’, and Cumberland Gulf. 
(Salmo narcsii Giinther, Proc. Zool. Soc. Lond. 1877, 476, jdate; Bean, Bull. U. S. 
Xat. Mas. xv, 135.) 
512. S. arcSui'ais (Gthr.) Gill & Jor. 
Dull greenish, silvery or reddish below ; lower fins yellowish ; no red 
spots (on specimens seen). Body rather elongate; head small, the snout 
very obtuse ; mouth moderate, the maxillary in the male reaching about 
to posterior margin of orbit ; teeth small ; a band of hyoid teeth ; pre- 
opercle with a distinct lower limb ; pectoral little shorter than head, 
reaching more than half way to ventral. Caudal moderatelj* forked; 
scales minute. Head 44; depth 5; D. 11; A. 10; B. 11; coeca 31-44 
L. 12 inches. Victoria Lake and Floeberg Beach, Arctic America, the 
northernmost Salmonoid known. {Giinther.) 
(Salmo areturus Giinther, Proc. Zool. Soc. Lond. 1577, 294, plate.) 
513 . S. liialDiio. (Walb.) J. & G. — Dolly Tardcn Trout; Bull Trout; Bed-spoitcd 
Trout; Salmon Trout; Malma; Golet. 
Bod}’ stout, the back somewhat elevated, deeper and less compressed 
than in S. fotitinaJis. Head large, snout broad, flattened above. Mouth 
large, the maxillarj" reaching past the eye. Eye 44 in head. Fins 
short; the caudal fin slightly forked or almost truncate; adipose fin 
usuall}" large; in large specimens its length is twice 'that of the eye. 
General color olivaceous; the sides with round red spots near the size 
of the ej'e, the back commonl.y with smaller pale ones, a feature of color- 
ation Avhich distinguishes this species at once from the others; lower fins 
colored as in fontinalis, duskj', with a pale stripe in front, followed by a 
dark one; sea-run specimens silverv, with the spots faint or obsolete; fins 
and back without dark reticulations. Gill-rakers without concentric 
strife. Head 3^ ; depth 4. D. 11; A. 9; scales 39-240-3G; pyloric 
coeca large, 45-50; gill-rakers about 8-f 12 as in others. L. 15 inches. 
Streams west of the Cascade Eauge, from Northern California to Alaska 
