264 BULLETIN OF THE BUREAU OF FISHERIES. 



Lepomis incisor Cuvier and Valenciennes. Bluegill, blue siinfish. 



£)ato/or Jp/^ (Pearse, 1915). — Number examined, 49. Average length, 30.8. Food: Insect larvs, 

 22.8; adult insects, 26; mites, 1.2; amphipods, 23.1; copepods, 16.4; cladocerans, 31; oligochaetes, 0.2; 

 nematodes, +; rotifers, +; plants, 1.3; algse, 0.4. 



Station 13; April 10, 1915; number examined, 7. Length: Maximum, 108; minimum, 53; average, 

 87.7. Food: Chironomus fulviventris larvse, 9.9; C. decorus larva, 0.4; Leptocella uwarowii larvae, 

 0.4; Heptageniainterpunctata larvae, 0.4; Hyalella, 18.5; Chydorus sphaericus, 0.3 ; plant remains, 27.1; 

 fine d6bris, 42.1. 



Summary. — Food: Insect larvae, ii.i; amphipods, 18.5; cladocerans, 0.3; plants, 27.1; fine debris, 

 42.1. 



Station 13; April 13; number examined, 14. Length: Maximum, 105; minimum, 46; averse, 

 80.1. Food: Insect eggs, 0.3; chironomid larvae, 0.7; Tanypus monilis larvae, 0.7; Chironomus viridis 

 larvae, 0.7; C. digitatus larvae, 4; C. palliatus larvae, 3.1; C. lobiferus larvae, 0.7; C. fulviventris larvae, 

 2.1; C. decorus larvae, 2.2; Cricotopus trifasciatus larvae, 0.2; Orthocladius sordidellus larvae, i; Pro- 

 cladius larvae, 6.2; Hydroptila larvae, 2.8; Agraylea larvae, 0.3; May-fly nymphs, 2.3; Heptageniainter- 

 punctata larvae, 2.4; Enallagma hageni nymphs, 14.2; Chironomus lobiferus pupae, 0.7; C. tentans 

 pupae, 0.8; Hyalella, 3.5; ostracods, 0.2; Cyclops, 8; Canthocamptus, 2.7; snail eggs, 5.7; plant remains, 

 8.5; algae, 5.3; Aphanothece, 17. i; silt and debris, 2.4. 



Summary. — Food: Insect larvae, 43.6; pupae, 1.5; amphipods, 3.5; ostracods, 0.2; copepods, 10.7; 

 snail eggs, 5.7; plants, 8.5; algae, 22.4; silt and debris, 2.4. 



Station 21, on south shore of Lake Wingra; April 28; number examined, i. Length: 27.5. Food: 

 Chironomus lobiferus larvae, 5; Cyclops, 84; Chydorus sphaericus, 11. 



Station 5; May 12; number examined, 5. Length: Maximum, 58; minimum, 32; average, 47.1. 

 Food: Insect larvae, i; chironomid larvae, 15; Chironomus lobifererus larvae, 1.2; C. decorus larvae, 

 + ; C. fulviventris larvae, 4; Pelopia monilis larvae, o.i; Cricotopus trifasciatus larvae, 5.9; Corethra 

 larvae, 6.4; May-fly nymphs, 17; Siphlurus nymphs, 7; chironomid pupae, 2.4; Cricotopus trifasciatus 

 adults, 5; adult midges, 5; mites, 1.8; Arrhentuns, 2; Hyalella, 24.2; ostracods, 0.7; Eurycercus, 0.8; 

 Chydorus sphaericus, 0.5; algae, o.i. 



Summary. — Food: Insect larvae, 56.6; pupae, 2.4; adult insects, 10; mites, 3.8; amphipods, 24.2; 

 ostracods, 0.7; cladocerans, 1.3; algae, 0.1. 



Station 16; May 15; number examined, 7. Length: Maximum, 56; minimum, 41; average, 48.8. 

 Food: Insect larvae, 0.7; Cricotopus trifasciatus larvae, 77.4; Orthocladius sordidellus larvae, 7; Pro- 

 bezzia pallida larvae, 0.9; P. glaber larvae, 0.7; chironomid pupae, 7; Hyalella, 5.6; ostracods, 0.4; 

 Planorbis, 0.1; algae, 0.1. 



Summary. — Food: Insect larvae, 86.7; pupae, 7; amphipods, 5.6; ostracods, 0.4; Planorbis, 0.1; 

 algae, 0.1. 



Station 3; June 4; number examined, 2. Lengths: 115, 117. Food: Helea larvae, 1.5; chironomid 

 larvae, i; Chironomus lobiferus larvae, i; Simulium vittatum larvae, 10; Peltodytes edentulus larvae, 

 2.5; Tabanuspupae, 5; Hyalella, 3.5; ostracods, 0.4; Eurycercus, 52.5; Physa, 0.5; leech, 17.5; plants, 5. 



Summary. — Food: Insect larvae, 16; pupae, 5; amphipods, 3.5; cladocerans, 52.5; snails, 0.5; 

 leech, 17.5; plants, 5. 



Station 23; ]xme 14; number examined, 2. Lengths: 44, 42. Food: Chironomus tentans larvae, 5; 

 Orthocladius sordidellus larvae, 5; Chironomus lobiferus pupae, 5; Orthocladius sordidellus pupae, 7.5; 

 chironomid pupae, 4; Hyalella, 73.5. 



Summary. — Food: Insect larvae, 10; pupae, 16.5; amphipods, 73.5. 



Station 2; June 15; number examined, 7. Length: Maximum, 58; minimum, 43.5; average, 50.1. 

 Food: Helea larvae, 0.4; chironomid larvae, 3.5; Chironomus fulviventris larvae, 4.4; Orthocladius sor- 

 didellus larvae, 4.5; Orthocladius sp. larvae, 1.2; Protenthes monilis larvae, 1.4; Probezzia pallida larvae, 

 2.5; caddis-fiy larva and case, 1.4; Caenis diminuta nymphs, 13; Callibaetis nymphs, 11; Enallagma 

 hageni nymphs, 9; E. antennatum nymphs, i; Chironomus lobiferus pupae, 17; mites, 1; Hyalella, 16; 

 ostracods, 2; Cyclops, 2; Eurycercus, i; Chydorus, 0.1; ephippial eggs, 0.1; Planorbis, 6.8. 



Summary. — Food: Insect larvae, 53.3; pupx, 17; mites, i; amphipods, 16; ostracods, 2; copepods, 

 2; cladocerans, 1.2; snails, 6.8. 



Station 27; June 17; number examined, 8. Length: Maximum, 124; minimum, 69; average, 

 100.9. Food: Chironomus lobiferus larvae, 13. i; Palpomyia longipennis larvae, 8; Orthocladius sor- 

 didellus larvae, 12; Probezzia pallida larvae, 10.2; caddis-fly larvae in cases, 7.2; Chironomus lobiferus 



