The Regulative Action of Birds upon Insect Oscillations. 29 



HIRUNDINID^. 



Petrochelidon luuifrons : Aphodius inquinatus, 



FRINGILLID.E. 



Coturniculus passeri/iiis : Setaria. 



Spizella dotnestica : Anisopteryx vernata, Anoinala biuotata, 

 Baris, Setaria, Panicum. 



tSpizella ugrestls : Anisopteryx vernata, Onthophagus, Aphodius 

 A. inquinatus, Monocrepidius, Ba,ris, Sphenophorus. 



Spiza anierlcuna : Helix, Agapestemon, Anisopteryx vernata, 

 Anisodactylus, Ips fasciatus, Aphodius, A. inquinatus, 

 Anomala biuotata, Sphenophorus, Wheat, Setaria. 



Zanielodia ladociciana : Anisopteryx vernata, Anomala bi- 

 notata. 



Passerltui cyanea : Aphidius, Anisopteryx vernata, Onthoph- 

 agus, Aphodius, Anomala biuotata, Monocrepidius, Baris, 

 Setaria. 



ICTEKID^. 



Molothrus ater : Aphodius, Dibolia aerea. Polygonum, Corn. 

 Agelceus plueniceas : Nephelodes violans, Anisopteryx vernata, 



Anoma'a binotata, Tanymecus confertus, Polygonum, Wheat. 

 Icterus galhula : Anisopteryx vernata, Anomala binotata, Phy- 



matodes variabilis, Psenocerus supernotatus. 

 Icterus spurius : Camponotus, Anisopteryx vernata. 

 Quiscalus purpureas cuneus : Calosoma calidum, Dorcus paral- 



lelus, Crawfish, Corn. 



TYRANNID^E. 



Tyrannus carolinetisis : Anisopteryx vernata, Aphodius in- 

 quinatus, Anomala, A. binotata, Melanotus. 



Contopus virens : Ips fasciatus, Aphodius, A. inquinatus. 



Empidonax trailli : Anisopteryx vernata, Anomala. 



Empidonax flaviventrls : Aphodius, Anomala binotata, Pseno- 

 cerus supernotatus, Hymenarcys. 



CUCULID^. 



Coccyzus erythrophthalmus : Anisopteryx vernata, Anomala. 



PICID^. 



Melanerpes erythrocephalus : Camponotus, Anisopteryx ver- 

 nata, Calosoma calidum, Scarites substriatus, Canthon hud- 

 sonias, Anomala binotata, Melanotus, Corn. 



COLUMBID^. 



Zenaidura carolinensis : Corn. 



PEBDICIDiE. 



Ortyx virginiatia : Chrysomela suturalis, Polygonum, Setaria, 

 Corn. 



