Jordan and Ever maun. Fishes of North America. 507 



are often nearly plain bright silvery. Many local varieties distinguished 

 by shades of color, also occur. Length 18 inches or less. The best known 

 of our charrs, abounding in all clear, cold streams from Maine to the 

 Saskatchewan and northward to Labrador, southward in the Alleghanies 

 to the head waters of the Savannah, Chattahoochee, Catawba, and French 

 Broad; largely introduced into western streams but not native west of 

 the Mississippi, (fontinalis, living in springs.) 



Salmo fontinalis, MITCHILL, Trans. Lit. and Phil.Soc. N. Y., i, 1815, 435, near New York City; 

 Salmo alleghaniensis, RAFINESQUE, Ich. Oh., 44, 1820, Brooks falling into the Alleghany and 



Monongahela rivers. 

 Salmo nigrencetis, KAFINESQUE, Ich. Oh., 45, 1820, near the Laurel Hills, Pennsylvania; 



GUNTHER, Cat., vi, 152, 1866, and of nearly all early authors. 

 Salmo canadensis, HAMILTON SMITH, in Griffith's Cuvier, x, 474, 1834, Canada ; dots blood red, 



each "in a white circular spot." 

 Salmo hoodii, RICHARDSON, Ross Voyage, App. LVIII, 1835, and Fauna Bor.-Amer., m. 173, 1836, 



Fort Enterprise, Pine Island Lake, etc.; based in part on namaycush. 

 Salmo immaculatus, * H. R. STOKER, Bost. Journ. Nat. Hist., vi, 1850, 361, Lower St. Lawrence ; 



(Canadian "Salmon Trout"), name preoccupied ; GtJNTHEii, Cat., vi, 125, 1866. 

 Salmo hudsonicus, SUCKLEY, Ann. Lye. Nat. Hist. N. Y., 1861, 310, Hudson Bay and tribu- 

 taries; Labrador ; Newfoundland ; (Coll. Drexler, Gill, and Coues); GUNTHER, Cat., 



vi, 153, 1866. 

 Salvelinus fontinalis, JORDAN, Proc. U. S. Nat. Mus., 1878, 81, in part. 



Represented in certain ponds in New Hampshire by 



783a. SALVELINUS FONTINALIS AGASSIZII f (Garman). 

 (DUBLIN POND TROUT.) 



Coloration pale grayish, almost without red spots, thus resembling the 

 lake trout. Otherwise similar to fontinalis. (Named for Louis Agassiz.) 



Salmo agassizii, GARMAN, Nineteenth Report Mass. Fish Comm., 1885, 20, Dublin Pond (Lake 

 Monadnock), Keene, New Hampshire ; Center Pond, New Hampshire. 



784. SALVELINUS MALMA (Walbaum). 

 (DOLLY VARDEN TROUT ; OREGON CHARR ; BULL TROUT ; RED-SPOTTED TROUT ; MALMA ; GOLET.) 



Head 3f j depth 4 ; eye 4. D. 11 ; A. 9 ; scales 39-240-36 ; pyloric co3ca 

 large, 45 to 50 ; gill rakers about 8 -f- 12. Body stout, the back somewhat 



* Sea-run forms of this and other charrs and trout are larger in size, silver-gray in color and 

 without spots, or nearly so. A silvery-gray form abundant in Canadian estuaries, and locally 

 known as Salmon Trout, has been called var. immaculatus, but this name is preoccupied by Salmo 

 immaculatus, Walbaum, which is one of the Characinidse. 



t This form is thus described by Mr. Garman : 



Salmo agassizii: B. 11 to 13; D. 12 to 13; A. 10 to 12; V. 8 to 9; P. 14 to 15; pores 109 to 119; 

 scales 38 to 42-217 to 237-38 to 42; second dorsal to lateral line, 28. 



A variety of the brook trout; apparently restricted to the small lakes in the neighborhood of 

 Dublin, New Hampshire. Compared with those of S. fontinalis, the young are rather more slender, 

 the caudal notch slightly deeper, and the sides more silvery. The young are much darker 

 colored than the adults; on both the red spots of the flanks are large and numerous. On the 

 adult the brown color has become so much bleached that the specimen is nearly uniform silvery; 

 very faint indications of the red spots remain. The differences between the young of S. fontinalis 

 and those of this variety are even more marked than those between adults; side by side, the 

 clouded parr marks or bands at once distinguish the young of S. agassizii. Apparently it is later 

 in attaining sexual development, and has the appearance of a deep-water species. Length 1% 

 inches. 



Snout longer than eye ; maxillary extending behind orbit; in young the diametet of the eye equals 

 the length of the snout, and the length of the head is one-fourth of the total, without caudal; 

 the length of the head of a 12%-inch specimen (fig. 18) equals the depth of the body, and is con- 

 tained 4% times in the length of the body and head. Dublin Pond; Lake Monadnock, Keene, 

 New Hampshire; Center Pond. 



