Mar., 1920] Food and Fish Associates of Young Perch 139 



specimens from the deeper as well as the shallow bottoms and 

 from the top. No attempt was made to seine in water deeper 

 than five feet. Because of the presence of stiff vegetation and 

 numerous isolated boulders it was found quite impossible to 

 use the seine in some localities and this was equally true along 

 shore having precipitous sides and deep water. The paucity 

 of data from some localities, notably Starve Island and Green 

 Island, is to be attributed chiefly to this cause. 



Before and during the operation of seining, notes were made 

 of the character of the localities, i. e., the depths of the water, 

 the character and slope of the bottom, the presence and char- 

 acter of vegetation, etc. The catch was fixed immediately in 

 10 per cent formalin or 90 per cent alcohol and labelled with 

 the locality. A note of the different species included in the 

 catch was made in a field note book and the locality mapped at 

 once. There was consequently little confusion in tabulating 

 the results. 



The total number of perch taken was between three and 

 four hundred of which two hundred were fixed and one hundred 

 and thirty-eight examined for their length and stomach con- 

 tents. The specimens varied in length from twenty-six to one 

 hundred and twenty millimeters. 



3. Fish Fauna of Localities Examined. 



Forty-two localities, representing as many types of habitat 

 as could be distinguished and offering a considerable range in 

 distance, were examined. These localities have been charted on 

 the accompanying map. Following is a description of each 

 locality with its fish fauna so far as determined: 



Locality 1, a. West Harbor, Catawba Island. Flat, sandy 

 beach with no aquatic vegetation except spike rushes (Ele- 

 orchus) along the water line. 



Fauna: Adults of carp, sunfish, perch, white bass, golden 

 shiner, top minnow (Fundulus Diaphanus i-nenona), and uniden- 

 tified minnows. Fry of white bass, rock bass, perch, log perch 

 (Percina caprodes zebra), brook silversides and unidentified 

 minnows. 



Locality \, h. Reedy marsh connected by narrow channel 

 with West Harbor channel. 



Fauna: Adults of perch, sunfish and mud minnows. Fry of 

 sunfish and large mouthed bass. 



