zz Food of Fishes of Winona Lake 



Fishes examined in this collection 



Perca flavescens Mitchill (yellow perch). 

 70 mm. 12 tricoptera larvae and cases. 



62 mm. 6 tricoptera larvae and cases; 10 Hyalella; 1 Dytiscus larva. 

 69 mm. 1 Hyalella; 1 cray-fish 11 mm. long-; several masses of macerated, 



half-digested animal tissue. 

 28 mm. 1 cladoceran, Pleuroxus denticulatus; a small piece of ani- 

 mal tissue. 

 Lepomis pallidus Mitchill (bluegill). 



43 mm. 1 Chironomus larva, 1 Simulium larva and 1 ostracod. 

 43 mm. Head of Dytiscus beetle larva; 1 Chironomus larva; 2 Hyalella; 

 2 ostracods; 2 water mites; 21 cladocera; fragments of abdomen of 

 cray-fish. 

 45 mm. Empty. 



38 mm. 5 Chironomus larvae; 115 cladocerans, Pleuroxus denticulatus. 

 48 mm. 1 Hyalella. 

 Micropterus salmoides Lacepede (large mouth black bass). 

 30 mm. Well filled with fish flesh. 

 24 mm. 2 Leuceruthrus micropteri. 

 Labidesthes sicculus Cope (skipjack). 



82 mm. Fragments of a small hymenopterus insect. 

 62 mm. Macerated insect fragments. 



62 mm. A few fragments of a Hyalella knickerbockeri ; 450 Pleuroxus 

 denticulatus; 1 beetle, Patrobus longicornus. 



Collection 30 



June 24, 1921. Potamcgeton, Chara, Ceratophyllum ; sand and marl; 

 two and one-half feet; clear; clear; 9:00 a. m. ; seine. 



Fishes examined in this collection 



Perca flavescens Mitchill (yellow perch). 



110 mm. 5 small fish, 6 mm. each in length. 



116 mm. 3 small perch, 27 mm., 19 mm. and 12 mm. 



112 mm. 9 small fish, length 12 mm. each. 

 115 mm. 3 fish, 13 mm. each. 



108 mm. 1 fish 20 mm. long; 1 fish 18 mm. long; 1 fish 12 mm. long; 

 1 fish 10 mm. long. 

 61 mm. Empty. 



117 mm. 1 fish 18 mm. long; 4 fish 11 mm. each; 1 fish 8 mm. long. 



130 mm. 3 Physa 3 mm. diameter; 2 fish, each 18 mm. long; 2 fish, each 

 10 mm. long. 



118 mm. 2 damsel-fiy nymphs; head and thorax of damsel-fly nymph 5 



mm. long; 3 fish 10 mm. each. 

 124 mm. 8 Pleuroxus denticulatus; 3 Physa; 1 fish 20 mm. long; 4 fish 

 10 mm. each. 



114 mm. 1 piece of fish flesh 2 x 10 mm. 



113 mm. 2 fish 11 mm. each; 2 fish 6 mm. each. 



115 mm. 1 fish 8 mm. long; 1 Physa 2 mm. in diameter. 

 154 mm. Empty. 



