320 CONTRIBUTIONS TO NORTU AMERICAN ICHTHYOLOGY — IV. 



and Kamtschatka, generally abnndant northward, descending to the 

 sea, where it reaches a weight of about 12 pounds. 



(Salmo malma Walbaum Artedi, Pise. 1792, 66: Sahno caUarias Pallas Zoogr. Rosso- 

 Asiat. iii, 353, 1811-31 : Salmo caUarias Giinther, vi, 143: Salmo spectabilis Girard, Proc. 

 Acad. Nat. Sci. Phila. 1856, 218: Salmo parkei Suckley, Ann. Lye. Nat. Hist. N. Y. 1861, 

 309: Salmo campbclli Sucklcy, Ann. Lye. Nat. Hist. N. Y. 1861, 313: Salmo parkii, lordii, 

 and camphellii Giinther, vi, 121, 148, 149: SalveUnis spectabiUfi Jordan, Proe. U. S. Nat. 

 Mus. i, 7y, 1878: Salmo tudes Cope, Proc. Amer. Phil. Soc. Phila. 1873: Salmo bairdii 

 Snekley, Ann. Lye. Nat. Hist. N. Y. 1831, 309: Salmo bairdii Giinther, vi, 121; Salvc- 

 linus bairdi Jordan, Proc. U. S. Nat. Mus. i, 82.) 



aa. Hyoid teeth wanting. 



514. S. iToatiBKilis (Mitch.) Gill & Jov.— Brook Trout; Speckled Trout. 



Body oblong or elongate, moderately compressed, not much elevated. 

 Head large, but not very loug, the snout bluntish, the interorbital space 

 rather broad. Mouth large, the maxillary reaching more or less beyond 

 the eye. Eye large, usually somewhat above the line of the axis of the 

 body. Caudal fin slightly lunate iu the adult, foiked in the young; 

 adipose fin small ; pectoral and ventral fins not especially elongate. 

 Red spots on the sides, rather smaller than the pupil; back mostly 

 without spots, more or less barred or mottled with dark olive or black ; 

 dorsal and caudal fins mottled or barred with darker; lower fins dusky, 

 with a pale, usually orange band anteriorly, followed by a darker one; 

 belly ill the males often more or less red; sea-run individuals {S. canaden- 

 sis Smith, the Canadian "Salmon Trout") are often nearly plain bright 

 silvery; many local varieties distinguished by shades of color also occur. 

 Head 4J; depth 4.^. D. 10; A. 9; scales 37-230-30; gill-rakers about 

 6 4- 11. L. 18 inches or less. The best known of our trout, abounding 

 in all clear, cold streams from Pennsylvania to Dakota and northward 

 to the Arctic Circle, southward in the Alleghanies to the headwaters of 

 the Savannah, Chattahoochee, Catawba, and French Broad. 



(Salmo fontinaUs Mitch. Trans. Lit. & Phil. Soc. N. Y. i, 435: Sahno fonfinaUs Giin- 

 ther, vi, 152, and of nearly all authors : Salmo canadensis* Hamilton Smith, in Griffith's 

 Cuvier, x, 474, 1834 (Canadian ''Salmon Trout"): Salmo immaculatus* H. R. Storer, 

 Bost. Jouru. Nat. Hist, vi, 384, 1850 (Canadian "Salmon Trout"): Salmo immaculatus 

 Gilnthei-, vi, 125: Sahno hndsonicns Suckley, Ann. Lye. Nat. Hist. N. Y. 1861, 310: 

 Salmo hudsonicus Giinther, vi, 153; Jordan, Proc. U. S. Nat. Mus. i, 81: ? Salmo hearnii 

 Rich. Franklin's Journ. 70;;.) 



515. S. hoodi (Rich.) Gill & Jor. 



Body rather elongate. Maxillary rather strong, straight, extending 

 to or beyond hind margin of ej^e. Preopercle very short, with a very 

 short lower limb. Pectoral not reaching half way to ventral ; adipose 



*The nominal species canadensis and imm.aculatus are based on sea-run specimens of 

 larger size, the so-called " Salmon Troul". 



