56 BIOLOGICAL SURVEY OF 



Trinton Nitzsch 



T. LiTURATUM Nitz. Iiifests duck and geese. 



T. QUERQUEDULAE Liiiii. Occurs Oil tlic various wild ducks. 



PsEiiDOMENOPOX Mjoberg 



P. PACiFicuM Kell. Found on grebes. 

 P. TRiDENs. On horned grebe. 



Laemobothriidae 



Laemobothrion Xitzsch 



L. NIGRUM Burm. Occurs on coots. 

 L. TITANS. On bald eagle. 



RiCINIDAE 

 RiciNis De Geer 



R. ANGULATUS Kcll. Fouiid Oil kingbird. 



R. FRENATUS Nitz. Occurs on golden-crowned kinglet. 



R. LiNEATUS Osb. Found on ruby-tliroated hummingbird. 



Philopteridae 



GoNiODES Xitzseh 



G. DAMicoRNis Nitz. lufcsts domcstic pigeon. 



LiPEURUS Nitzsch 



L. cAPONis Linn. Infests domestic fowls. 



L. HETEROGRAPHus Nitz. Also ou domestic fowls. 



Philopterus Nitzsch 



P. AGELAii Osb. Found on red-winged blackbird. 



P. AURiTus Scop. Occurs on hairy woodpecker. 



P. BUTEONis Pack. Infests red-shouldered hawk. 



P. coLYMBiNUs Drurj. Found on loon. 



P. coRvi Osb. Occurs on crow. 



P. CURSOR Nitz. Frequents various species of owls. 



P. DiSTiNCTUs. Infests the American raven. 



P. FuscovENTRALis Osb. Occurs Oil wood pewee. 



