150 PAPERS ON ZOOLOGY OF MICHIGAN. 



a foot of water. They were not closely associated with the other §mall 

 fish, but a few small suckers and young herring were occasionally with 

 them. For some reason, they avoided all but the sandy bottoms and 

 in no instance were these schools seen over the pebble zone, although 

 often close to its margin. 



The sixteen specimens opened had been eating entomostracans. 

 The material appeared to be the same in all of the fish, and it was of an 

 orange color and showed through the thin body walls of most of the 

 several hundred captured. The contents of twelve stomachs were sent 

 to Mr. Chancey Juday, who determined the material as fragments of 

 Cyclops viridis, hrevispinosus, Diaptomus ashlandi, and Bosmina long- 

 irostris. It will be seen that these hoards of little sticklebacks were 

 eating the same objects as were the young whitefish and herrings. 

 They are, thus, of some economic interest as competitors of these 

 more useful fish. 



24. Lepomis 7negalotis (Rafinesque) (?). — Two small sunfish were 

 taken in a little bay having about a foot of water and a mud bottom in 

 Shelldrake River. These were the only sunfish, in fact the only mem- 

 bers of the Centrarchidae found by the writer in the Whitefish Point 

 region. 



They were each about 1.5 inches long. While they answer well to 

 the descriptions of L. megalotis and resemble specimens of that species, 

 the present state of our knowledge of Lepomis, makes it impossible to 

 identify with certainty such small specimens as these, especially since 

 they came from a region remote from any where sunfish have hereto- 

 fore been thoroughly studied. 



25. Perca flavescens (Mitchill). Yellow Perch. — Perch were com- 

 mon and the most generally distributed of all the fish in the Whitefish 

 Point region, according to the writer's notes. Many small ones (1 to 

 1.5 inches long) were present on the shoal of Lake Superior, either 

 solitary, in schools, by themselves or in schools of small suckers and 

 herring. They did not appear to associate with the sticklebacks. 

 They are uncommon in the beach ponds, and none were found in those 

 not freely connected with Lake Superior. The marsh lakes con- 

 tained many perch, both large and small, and here also they were 

 found as solitary individuals and in schools, the latter being always 

 made up of perch of about the same size. Companies of large perch 

 appeared to wander freely about in some of the marsh lakes, not 

 clinging to the neighborhood of the shores as most of the smaller lake 

 fish did. They tended, however, to remain in the deeper water, from 

 which they were readily caught with hooks baited with leeches. 



In the northwest corner of Shelldrake Lake conditions seemed to be 



