Food Relations of Fresh-Water Fishes. 533 



YERMES. 



Polyzoa: 3 Lepomis pallidus, May, Aug., Oct.; 1 Pomoxys, yg. 



Pectinatella magnified: I Lepomis pallidus, yg.; 7 Ictiobus 

 bubalus, Oct. 



Plumatella: 1 Placopharynx carinatus, Oct.; 3 Ictiobus buba- 

 lus, Oct.; 1 I. cypriuella, Oct.; 2 Ictalurus punctatus, Sept. ; 

 1 Polyodon spathula, May. 



Hirudinei: 1 Catostomus teres, Oct.; 3 Ictalurus punctatus, 

 Apr., June; 1 Amiurus nebulosus, May; 5 A. raarmoratus, 

 Oct., Nov.; 1 Polyodon spathula, May. 



Chcetopoda: 1 Aphredoderus sayanus, Sept. 



Naididce: 1 Pimephales promelas, Aug.; 1 Moxostoma macro- 

 lepidotura, 2 in., July. 



Lumbriculus: 1 Notropis megalops, June. 



Lumbricus: 1 Lepomis pallidus, Nov. ; lyg. 



Nematoda: 1 Amiurus nebulosus, Aug. 



Gordius: 2 Semotilus atromaculatus, Sept.; 1 Ictalurus punc- 

 tatus, Oct. 



Anguillulidce: 1 Ictiobus bubalus, Apr.; 1 I. cyprinella, June. 



Rotifera : 1 Notropis heterodon, July ; 1 Moxostoma, yg. ; 3 M. 

 macrolepidotum, 2|~2| in., Aug.; 1 Erimyzon sucetta, 

 If in. ; 1 yg. ; 2 Catostomus teres, June, Aug. ; 1 Carpiodes, 

 yg. ; 1 Ictiobus, yg. ; 1 I. bubalus, yg. 



Anurcea: 2 Erimyzon sucetta, yg.; 2 Ictiobus, yg.; 2 I. buba- 

 lus, yg. 



Brachionus: 1 Ictiobus, yg. 



Metopidea: 1 Moxostoma, yg.; 3 M. macrolepidotum, 2J-2| in., 

 Aug.; 1 Erimyzon sucetta, 1| in.; 1 yg.; 2 Catostomus 



teres, June, Aug. 



Rotifer vulgaris: 1 Catostomus teres. June. 

 Planaria: 1 Noturus gyrinus, Oct. 



PORIFERA. 



Spongilla: 2 Ictalurus punctatus, Sept. 



