8 Food of Fishes of Winona Lake 



Collection 1 



June 25, 1919. Rushes, Chara, Potamogeton ; sand and marl; two feet; 

 clear; semi-cloudy; 1:00 p. m.; seine. 



Fishes examined in this collection 



Lepomis pallidus Mitchill (bluegill). 



47 mm. 2812 Bosmina longirostris. 



53 mm. 653 Bosmina longirostris; 3 Cyclops. 



58 mm. 2 Cyclops; 3 small snails; 8 Bosmina longirostris; numerous 

 diatoms. 

 Notropis sp. (species of minnow). 



52 mm. A mass of undigested material that I was unable to identify. 



Collection 2 



June 28, 1919. Sparse growth of Chara and a very heavy growth of 

 Potamogeton; blue mud very miry and oozy; ten to fifteen feet; clear; clear; 

 3:00 p. m. ; hook and line. 



Fishes examined in this collection 



Lepomis pallidus Mitchill (bluegill). 



141 mm. 306 Daphnia pulex; 1 Spinitectus gracilis. 



113 mm. 3 Parasitic round worms; 50 Bosmina longirostris; Hyalella 

 knickerbockeri ; 1 large beetle unidentified ; 3 pieces of encrusted plant 

 tissue 1 cm. long and 1 mm. in diameter. 



Collection 3 



July 16, 1919. Potamogeton and Chara; sand; two and one-half feet; 

 clear; clear; 3:00 p. m. ; seine. 



Fishes examined in this collection 



Perca fiavescens Mitchill (yellow perch). 



Length, 85 mm. 6 ephemerida larvae; 10 Hyalella knickerbockeri; 1 

 amphiopod; 1 back-swimmer; 1 haliplid; 1 piece of plant tissue 2x5 

 mm. ; 3 Chironomus larvae. 

 Micropterus salmoides Lacepede (large mouth black bass). 



39 mm. 12 beetle larvae; 6 Leuceruthrus micropteri. 



93 mm. 3 Leuceruthrus micropteri. 

 122 mm. Mass of macerated fish flesh; some algal filaments; 6 Leuceru- 

 thrus micropteri. 



98 mm. 1 fish 15 mm. long; 1 fish 19 mm.; 1 fish 20 mm.; one piece of 

 macerated fish flesh; a few algal filaments; a large mass of scales, 

 bones and pigment cells; 15 Leuceruthrus micropteri. 



43 mm. 2 amphipods; a macerated mass of fish flesh; 11 Leuceruthrus 

 micropteri; 8 ephemerida larvae. 



33 mm. 48 Hyalella; 15 Alonella; 1 Stylaria. 



45 mm. 1 fish 23 mm.; 1 piece macerated fish flesh 64 mm. long; 6 

 Leuceruthrus micropteri. 



