12 Food of Fishes of Winona Lake 



Etheostoma caprodes Raf. (log perch). 



55 mm. 10 Hyalella; 1 chironimid larva; 6 tricoptera cases; 2 parasitic 

 nematoda ; 1 rotifer, 

 Ambloplites rupestris Raf. (rock bass). 



113 mm. Diatoms; a few pieces of plant tissue resembling Potamogeton 

 and a few algae filaments. 



Collection 9 



August 11, 1919. Spatter-dock, Elodea, Ceratophyllum and Myriophyllum ; 

 soft mud; ten feet; clear; clear; 9:30 to 10:30 a. m. ; hook and line. 



Fishes examined in this collection 



Perca flavescens Mitchill (yellow perch). 



90 mm. 1 young cray-fish 20 mm. long; 2 odonata nymphs. 



97 mm. 1 piece of fish flesh, about 125 cmm. 



77 mm. Empty. 

 Lepomis pallidus Mitchill (bluegill). 



108 mm. Stomach well filled with plant tissue; 2 Chironomus larvae; 1 



water mite; 1 Sida crystallina; 3 Planorbis. 

 117 mm. With the exception of 1 Planorbis the stomach was entirely 

 filled with plant tissue. 

 95 mm. 3 nematoda. 



Collection 10 



August 12, 1919. Spatter-dock, Elodea, Ceratophyllum, Myriophyllum, 

 and Potamogeton; vegetable debris and marl; eight feet; clear; clear; 5:30 

 to 7:00 p. m.; hook and line. 



Fishes examined in litis collection 



Perca flavescens Mitchill (yellow perch). 



94 mm. 2 Physa. 



Lepomis pallidus Mitchill (bluegill). 



95 mm. 1 Chironomus larva; a mass of plant tissue; 5 nematoda; 2 



ephemerida larvae; 2 Dytiscus larvae; 5 tricoptera cases and some 

 macerated parts of an insect which I was unable to identify. 

 Eupomotis gibbosus Linnaeus (sunfish). 



109 mm. 22 Gyraulus; 1 Chironomus larva and three nematoda. 

 132 mm. 40 Gyraulus. 



Chaenobryttus gulosus Cuvier & Valenciennes (Warmouth bass). 



110 mm. 1 large ephemerid larva; 1 small fish apparently just off the egg. 

 9.") mm. Stomach empty. 



Summer 1920 



Collection 11 



June 17, 1920. Potamogeton, Chara and rushes; sand and marl; three 

 feet; clear; raining; 9:30 a. m.; seine. 



