1-1 



DAVID STAUB TOHDAN. 



its color is bright blue and silvery, without spots. In the l'ali it becomes 

 very red, when it is known as the Red-fish, or in Japan as the Benitnasu. 

 in spring it is called Blue Back. The young specimens arc faintly 

 spotted, hut those land-locked are often profusely marked by black spots. 



The flesh of the Bemmasu is rich and delicate, much superior to 

 that of the other Japanese salmon and inferior only to the American 

 Qainnat Salmon, Onc&rkynchus tscliawytsclia. The range of the species 

 is northern. In America it is not found South of the Columbia. In 

 Alaska and Siberia it far out numbers all other species and furnishes the 

 chief product of the canneries. In Japan it is said to be known only m 

 Kushiro in Northern Hokkaido, where dwarf examples enter Lake Akan. 

 b'rom Lake Akan our specimens were received through the courtesy of 

 Mr. Nozawa of the Museum of Sapporo. 



5. The Yamabe or Mountain Trout ; Salmo perryi Brevoort. 



In all clear streams through Hondo and Hokkaido, trout are found 

 in abundance. Small ones are found in small streams and large ones in 

 larger rivers, while those weighing ten or twelve pounds are often taken 

 ni the sea, especially in the north. To the small ones, the name Yamabe, 

 with its variants Y'amabai, Yamami and Yamomi, is given. The large 

 ones are called Masu by the fishermen, who do not discriminate between 

 them and the salmon. 



They belong, however, to a different genus. Salmo, characterized by 

 the presence of not more than 13 anal rays, not more than 13 brau- 

 chiostegals, and not more than 21) gill-rakers. The sexual changes are 

 much less than in Oncorhynehus. The species feed chiefly in fresh 

 water, and as a rule the individuals do not die after spawning. 



In all its stages of growth, the Yamabe may be known by the 

 presence of black spots along its back and dorsal fin, 3 to 5 on the base 

 of the dorsal being especially conspicuous. The scales are from 130 to 

 140. 



It is always a good food fi&h, its flesh being firm and red, much like 

 that of the Atlantic Salmon, Salmo salar. It is an excellent game-fish. 



