286 
BULLETIN OF THE BUREAU OF FISHERIES 
Detailed table of stomach contents of 5 smelts that contained food, out of 12 taken from Memphremagog 
Lake, April 23, 1894 
Length, in 
inches 
Stomach contents 
Length, in 
inches 
Stomach contents 
6U 
Larval stone fly. 
Nymphs of May fly. 
Larval insects. 
6tfe 
Crustaceans. 
Y oung smelt, 2^ inches long. 
7 
7 
634 - 
The following notes and tables were drawn from the report of Prof. A. A. Doo- 
little, of Central High School, Washington, D. C., to some smelts from Sunapee 
Lake, N. H., and Aroostook County, Me., were submitted for identification of 
stomach contents. 
Concerning the smelts of Sunapee Lake, Professor Doolitte said in effect that 
the fish taken in April were spawning fish; they had eaten very sparingly of Ento- 
mostraca, only 2 of the 12 examined having taken Entomostraca, an average of 23 
for each of the feeding fish and of less than 4 for each of the 12 smelts. Insect 
larvae and pupae were taken, an average of 434 for all the smelts examined. 
The specimens collected on August 12, 1910, were removed from the stomach 
of a brook trout caught in about 80 feet of water, or at least where the water was 
that deep. Only 2 of the 6 examined had eaten recently, the food consisting of 13 
Entomostraca. After October 13 the Entomostraca food became very much more 
abundant, although of the 30 smelts examined only 60 per cent had in the alimentary 
tract when examined. For those feeding, the average was 203 Entomostraca, or an 
average of 120 for all. 
Size or age of the smelts did not seem to effect the activity of the fish in feed- 
ing. There was a scattering of insect larvae among the Entomostraca, an average 
of one-half an insect for each of 30 specimens. Parasites were abundant in the ali- 
mentary tract, consisting of tapeworms, diatoms, and threadworms. Most of the 
specimens taken in the fall were found dead upon the beach; they can hardly be 
regarded as fully normal individuals, but no relation between parasites and the amount 
of food taken can be determined from the data in hand. The main food, as deter- 
mined, was Entomostraca, mostly of the genera Cyclops and Bosmina. 
Detailed table of results of an examination of the stomach contents of smelts from Sunapee Lake y made 
by Prof. A. A. Doolittle in 1910 
Date 
Length, 
in inches 
Number 
of smelts 
examined 
Number 
of smelts 
eating 
Entomos- 
traca 
Number 
of Ento- 
mostraca 
eaten 
Miscellaneous food 
Apr. 22 
3-4 Vs 
6 
1 
16 
30 insects. 
Apr. 23 
3M-4H 
6 
1 
30 
22 insects ; smelt eggs. 
Aug. 13 
6 
2 
13 
* 
Oct. 13 
2&-5 y s 
2K-2A 
2^-4^ 
lft-2H 
2A-4K 
2A-4A 
6 
4 
482 
1 insect. 
Oct. 15 
3 
2 
474 
Oct. 17 
6 
3 
1, 491 
8 insects; 3 amphipods. 
Oct. 26 - 
3 
1 
142 
Oct. 30 
6 
3 
152 
6 insects. 
6 
5 
910 
