50 SALMON AND TROUT IN ALASKA. 



in the lake above the falls cutthroats are abundant. These falls are 

 probably now impassable at all stages of water, and it is hardly to be 

 believed that fry of the trout in the lakes help to account for the 

 abundance of trout fry in the stream. It is to be observed that their 

 numbers decrease toward the upper reaches, so that for some distance 

 below the falls few are seen, and none in the few yards of the stream 

 between the lake and the head of the falls. 



SEA HABITS OF YOUNG SALMON. 



NOTES AFFORDED BY COLLECTIONS AND RECORDS. 

 THE SOCKEYE. 



The sea habitat of the 3^oung sockeye so far has not been studied. 

 The only observations available are the results of occasional and 

 irregular seine hauls made b;,^ the Albatross parties at various times, 

 accompanied usually by no notes regarding exact locality or asso- 

 ciated forms. These scant collections throw little light upon the sea 

 habits or habitat. The gear used was capable only of taking exam- 

 ples in comparatively shallow water, close inshore, on smooth 

 beaches. Larger examples would scarcely be taken under these con- 

 ditions even if present in the same waters, and smaller fry would not 

 be held by the web ordinarily used in the vessel's seines. 



The smallest specimens in the collection are 8 examples aver- 

 aging 41 mm., from Sumner Harbor, taken July 2, 1896. This harbor 

 is a small bay northeast of the town of Unalaska. It receives a small 

 creek, the outlet of a lake. The fry were taken in company with 

 coho fry and fingerlings. The sockeyes were feeding on Crustacea, 

 the cohos on both Crustacea and insects. If they were taken in the 

 bay, they were doubtless recent migrants from the lake. These sock- 

 eyes differ somewhat from the more southerly specimens in having 

 shorter and less numerous gillrakers — about 10-17; in coloration 

 they resemble some of the examples from Karluk, the parr marks 

 being longer and more bar-like than in those from Southeast Alaska. 



A number of fingerlings from Wood River, Bristol Bay, taken July 

 23, 1903, averaged about 41 mm. in length. The stomachs were 

 filled with small crustaceans and insects. Wood River has little faU 

 from the lake which it drains, and in spring tides is affected as far as 

 the lake. No notes accompany the specimens, so they are of little 

 biological significance. They seem to differ from the Southeast 

 Alaska examples of similar size in being of less tapering outline and 

 having a smaller eye. Six yearlings, average 98 mm., are in the same 

 lot, with the same food present in the stomachs. The main run from 

 the Kvichak River was reported to Mr. John N. Cobb, of the Bureau of 

 Fisheries, as occurring from the first to the middle of June, fish from 



