45 8 A MEXICAN FISHES. 



It feeds on any living thing it finds near it. In the mountain lakes it 

 spawns in the spring, running into the rivers for that purpose. Unlike S. 

 Gairdneri, its young are very common, and it probably begins breeding 

 in mountain streams at a length of less than a foot. Local variations 

 occur in abundance. Specimens from Seattle have the scales notably 

 larger than those from Victoria and Astoria, which agree with Utah Lake 

 specimens in this respect. Those that live in the depths of shady lakes 

 are almost black, while others are pale. Those in the sea are silvery and 

 only faintly spotted. In the opinion of Prof. Jordan this species is likely 

 to prove much more valuable for introduction into Eastern waters than 

 the Rainbow Trout. It is more active, more gamy, reaches a large size, 

 and thrives in a greater variety of waters. 



The Lake Tahoe Trout, Salmo Henshatvi. named in honor of the 

 well-known explorer and naturalist Henry W. Henshaw, and known also 

 as the " Silver Trout " and the " Black Trout," occurs not only in Tahoe, 

 but in Pyramid Lake and the streams of the Sierra Nevada. This form, 

 which has a longer and more conical head than S. spilurus, is a remark- 

 ably fine fish, many the weight of fifteen pounds, and is supplied abun- 

 dantly to the California city markets. Its ordinary weight is five or six 

 pounds, but it often weighs eighteen or twenty. 



A small hatchery has been established at Tahoe City for the purpose of 

 stocking a small branch of the lake for the benefit of summer visitors. 

 Bean is inclined to consider this a form of S. purpuratus. 



The Black-spotted Trout, Salmo plcuriticus, is closely allied to a form 

 which is found chiefly in the Utah Basin. Bean calls attention to the 

 fact that the types of this species 7 iave well developed hyoid teeth and 

 must be placed in the same group with purpuratus, and not with spilurus, 

 as lias hitherto been done by good authorities. 



The Waha Lake Trout, S. purpuratus Bouvicri, was discovered by Capt. 

 Charles Bendire,U. S. A., in Waha -Lake, a landlocked mountain tarn 

 in Washington Territory. It is a curiously colored local form of S. pur- 

 puratus, with dark spots only on the dorsal, caudal and adipose fins, and 

 on the tail behind the anal where the spots are very dark and compar- 

 atively small. It is characterized by other minute differences cata- 

 logued by Jordan. 



The Kansas River Trout, S. stomias,isa form with a broad, flat head, dis- 

 tributed from the Kansas river to the Upper Missouri, — the characteristics 



