254 NEW YORK STATE MUSEUM 



could not have been kept in the warm Croton water in June. 

 The salt water never rose above 71^ F and continued at this 

 high temperature only 10 days. 



The N. Y. Fisheries, Game and Forest Commission planted some 

 of these trout in a Long Island stream and some in a lake in 

 northern New York. Those that were planted on Long Island, 

 says Mr Cheney, when rather more than a year old rose to the 

 fly of the trout fisherman and made a most gallant fight, but it 

 is too early to tell the outcome of the experiment. The eggs 

 are one fifth of an inch in diameter; they hatch in 42 to 50 days 

 with water at 50. 



135 Salmo fario Linnaeus 



Brown Trout (Introduced) 



Salmo fario LINNAEUS, Syst. Nat. ed. X, I, 30, 1758; BLOCK, Ichth. I, 121, 

 taf.' 22, & 157, taf. 23, 1785; RICHARDSON, Fauna Bor.-Amer. Ill, 144, 

 pi. 92, fig. 3, A & B, 1836; DAY, Fish. Great. Brit. & Ireland, II, 95, 

 plates CIX, fig,. 3, CXIII, CXIV, CXVI, fig.l, 1884; BEAN, Fishes Penna. 

 78, color pi. 6, 1893; JORDAN & EVERMANN, Check-List Fish. N. A. 512, 

 1896. 



Salmo fario ausonii GUNTHER, Cat. Fish. Brit. Mus. VI, 64, 1866. 



Salar ausonii CUVIER & VALENCIENNES, Hist. Nat. Poiss. XXI, 319, pi. 618, 

 1848. 



The brown trout of Europe was introduced into the United 

 States from Germany in February 1883 and in subsequent years; 

 it has now become thoroughly acclimated in the fresh waters of 

 many of the states. 



The body of this trout is comparatively short and stout, its 

 greatest depth being contained about four times in the length 

 without the caudal. The caudal peduncle is short and deep, its 

 depth equal to two fifths of the length of the head. The length 

 of the head in adults is one fourth of the total length without 

 caudal or slightly less. The diameter of the eye is about one 

 fifth of the length of the head, and less than length of snout. 

 The dorsal fin is placed nearer to the tip of the snout than to 

 the root of the tail; the longest ray of this fin equals the dis- 

 tance from the eye to the end of the opercle. The ventral is 

 tinder the posterior part of the dorsal; its length is about one 

 half that of the head. The adipose dorsal is placed over the end 



