REPORT OF THE COMMISSIONER OF FISHERIES. 103 
report of the Bureau. The work has been in charge of Dr. W. C. 
Kendall, who has continued his inquiries during the past fiscal year. 
Eagle Lakes of Aroostook County.—Twenty-six species of fishes 
were collected in this region, a greater number than has been found 
in any other locality of like extent in Maine. The food fishes are 
chiefly members of the salmon family, and include the landlocked 
salmon (Salmo sebago), lake trout or togue (Cristivomer namyacush), 
square-tail trout (Salvelinus fontinalis), and white-fish (Coregonus 
labradoricus, C. stanleyi, and C. quadrilateralis). Species conspicu- 
ously abundant in the southern half of the state, such as eels, yellow 
perch, white perch, and pickerel, do not occur in this chain of lakes, 
although yellow perch are not uncommon in the St. Johns River, of 
which Fish River, in this region, is a tributary. 
The landlocked salmon, steelhead trout (Salmo gairdner?), and smelt 
(Osmerus mordax) have been introduced here. The steelhead has not 
since been recognized, but in about ten years the salmon has increased 
greatly in numbers and attained large size, due to the peculiar suita- 
bility of these waters to its needs, and doubtless also to the introduction 
of the smelt, upon which it feeds. In about five years the latter 
species has attained a length of 12 or 13 inches, as ascertained by actual 
measurement. 
Of the three species of white-fishes here represented, Coregonus 
labradoricus is the largest. It reachesa weight of at least 6 pounds, and 
is very abundant. Another form (C. stanleyz, until recently unde- 
scribed) is much smaller, attaining a weight of scarcely more than one- 
fourth pound, but is extremely numerous. It, with the young of the 
others and the smelt, probably affords the bulk of the food of the trout 
and salmon. The round white-fish (C. guadrilateralis) was found to 
reach 1 pound in weight, but seemed to be not abundant. 
This region was visited again in November, 1903, for the purpose of 
ascertaining the identity of a large trout locally known as the ‘* snow- 
shoe trout,” and to study the breeding habits of the various species of 
Salmonidex occurring there. It was considered of importance to fish 
culture to determine the feeding habits of these fishes at their spawning 
time. 
On several occasions young salmon (S. sebago) 6 or 8 inches long 
were observed eating the eggs of trout (S. fontinalis) as they were 
deposited. No salmon were observed upon the spawning grounds, 
owing to their being taken in a weir for fish-cultural purposes by the 
state commission. White-fish ascended the streams, or ‘‘thorough- 
fares,” at night for the purpose of spawning, and were followed by 
large numbers of suckers ( Catostomus commersonii), which were found 
feeding upon the eggs. A few small cusk (Lota maculosa), also, were 
eating the eggs of white-fish, and it was learned that adult white-fish 
feed largely upon the eggs of their own kind and the young upon 
