32 BIOLOGICAL SURVEY OF 



D. oRNATissiMA Gieb. Occurs on red-winged blackbird. 

 D. ORPHEA Osb. Occurs on catbird. 



D. PALLiDULA Harrison. Occurs on rose-breasted grosbeak. 

 D. PRAESTANs Kcll. Occurs on terns. 

 D. picTURATUs Osb. Occurs on meadow lark. 

 D. ROTUNDATA Osb. lufcsts crow. 

 D. SECONDARIA Osb. Also infcsts crow. 

 D. SIMPLEX Kell. Found on robin. 



D. sTRAMiNEA Deiinv. Occurs on flicker and other woodpeck- 

 ers. 



D. TYRANNA Osb. Occurs on kingbird. 



Rallicola Johnston and Harrison 



R. cuspiDATA Scop. Occurs on coot. 

 R. BisETosA Piaget. Occurs on rails. 



Orotthobius Denny 



0. cYGNi Linn. Infests swan. 



O. GONioPLEURUs Deuiiy. Occurs on the Canada goose. 



EsTHiOPTERUM Harrison 



E. ANSERis Linn. Occurs on geese. 



E. ARDEA Linn. Found on herons and bitterns. 



E. BOTAURi Osb. Occurs on the American bittern. 



E. coLUMBAE Linn. Infests domestic pigeon. 



E. CRASSicoRNE Scop. Commoii on several species of ducks. 



E. INFUSCATUM Osb. Occurs on woodcock, etc. 



E. LONGicoRNE Piaget. Found on double-crested cormorant. 



E. LURiDUM Nitz. Occurs on coot. 



Order THYSANOPTERA. Thrips 

 Phloeothripidae 

 Anthothrips Uzel 



A. vERBASCi Osb. Duck Brook, June 13. 



