528 Illinois State Laboratory of Natural History. 



Entomostbaca. 

 Eggs: 1 Dorosoma cepediauum, Oct. 



CLADOCERA. 



Daphnella: 1 Percina caprodes, Sept.; 1 Pomoxys, yg.; 1 No- 

 tropis heterodon, July; 1 Tctiobus cyprinella, July. 



Daph.niidce: 1 Roccus interruptus; yg.; 1 Stizostedion vitreum, 

 yg.; 5 Perca lutea, yg.; 2 Percina caprodes, Aug.; 4 Cen- 

 trarchiiiffi, yg.; 1 Micropterus dolomiei, yg.; 4 M. .salmoides, 

 yg.; 2 Lepomis gibbosus, yg.; 2 L. pallidus, yg.; 3 L. cya- 

 nellus, yg.; 1 Ambloplites rupestris, yg.; 2 Pomoxys, Mar.; 

 4 yg.; 1 Eucalia inconstans, June; 2 Zygouectes notatus, 

 June; 1 Dorosoma cepedianum, June; 1 Notemigonus 

 chrysoleucus, Sept.; 1 Notropis atherinoides, Oct.; 1 N. 

 whipplei, Aug.; 1 Hypentelium nigricans, yg.; 1 Ictiobus 

 urus, Aug.; 1 Araiurus, yg.; 2 Polyodon spathula, Aug. 



Daphniidce, eggs: 1 Ictiobus urus, Aug.; 1 Polyodon spathula, 

 Aug. 



Daphnia : 3 Perca lutea, y g. ; 1 Percina caprodes, Aug. ; 1 Cen- 

 trarchinag, yg.; 2 Chsenobryttusgulosus, yg.; 1 Zygonectes 

 notatus, Sept.; 1 Dorosoma cepedianum, 5|in., Oct.; 3 yg.; 

 1 Ictiobus velifer, yg.; 1 Ictalurus punctatus, 4 in., June; 



1 Amiurus natalis, 2| in., Oct.; 1 A. nebulosus, 3| in., June. 

 Daphnia, eggs: 1 Coregonus artedi. 



D.pulex: 1 Perca lutea, yg.; 1 Lepomis pallidus, yg.; 1 Labi- 

 desthes sicculus, Aug.; 1 Dorosoma cepedianum, yg.; 2 

 Notemigonus chrysoleucus, July; 1 Polyodon spathula, 

 June. 



D. hyalina: 4 Labidesthes .sicculus, June, Aug. 



D. retrocurva: 3 Labidesthes sicculus, June. 



Simocephalns : 3 Lepomis gibbosus, yg.; 3 L. pallidus, yg.; 3 

 Chasnobryttus gulosus, yg.; 4 Pomoxys, Mar., Apr.; 3 yg.; 



2 Notropis heterodon, May, July; 1 Ictiobus velifer, Mar.; 



3 Ictiobus urus, Apr., Aug.; 2 I. cyprinella, Apr.; 3 Ami- 

 urus, yg.; 2 Notropis gyrinus, Oct. 



Simocejjhalus, eggs: 1 Ictiobus urus, Aug. 

 S. vetulus: 1 Pomoxys, Mar. 



