Key to Scientific Names in Ornithology
(syn. Arundinicola Ϯ White-headed Marsh Tyrant A. leucocephala) Gr. δι- di- double < δις dis twice < δυο duo two; ξιφιας xiphias sword < ξιφος xiphos sword. This name has been widely used for the White-crowned Manakin "Dixiphia" pipra, although plate LXIII in Reichenbach 1850, not only illustrates an incorrect head but also shows a thin, elongated and sharply pointed first primary absent in that species. I brought this to the attention of Guy Kirwan, co-author with Graeme Green of "Cotingas and Manakins" (2011), and "Dixiphia" pipra has now been provided with a new generic name (see Pseudopipra).