Key to Scientific Names in Ornithology
(Furnariidae; Ϯ Great Xenops M. parnaguae) Gr. μεγας megas, μεγαλη megalē great; genus Xenops Illiger, 1811, xenops; "Megaxenops parnaguae n. gen., n. spec. ... Von weit beträchtlicherer Körpergröße als Xenops ... Zwischen Parnagua und Olho d'Agoa im Süden von Piauhy in der Catinga-Waldung spärlich auftretend" (Reiser 1905); "Megaxenops Reiser, Anz. Akad. Wiss. Wien, 42, 1905, p. 322. Type, by monotypy, Megaxenops parnaguae Reiser." (Peters 1951, VII, 147).
(Furnariidae; Ϯ Rufous-tailed Xenops M. milleri) Gr. μικρος mikros little; genus Xenops Illiger, 1811, xenops; "Microxenops gen. nov. ... Type, Microxenops milleri ... A small (length skin, 96 mm) furnariine bird with a general resemblance in color to species of the genus Xenops but with no white subauricular stripe and no black in the tail ... Doubtless it resembles Xenops in habits, as it does in general appearance, but the marked difference in their structure suggests that the resemblance is superficial rather than indicative of close relationship. In its short, square tail Microxenops suggests Sitta, while the short wedge-shaped bill recalls, at first glance, that of Picumnus rather than that of any known species of Furnariidae or Dendrocolaptidae" (Chapman 1914).
(syn. Syndactyla Ϯ Peruvian Recurvebill S. ucayalae) Gr. σιμος simos snub-nosed; genus Xenops Illiger, 1811, xenops; "My colleague, Dr. W. Meise, of the Staatliche Museen für Tierkunde und Völkerkunde, Dresden, kindly calls my attention to the fact that my Anachilus (Amer. Mus. Novitates, no. 332, p. 11, Oct. 31, 1928) proposed for a new genus of furnariine bird from Perú, is preoccupied by Anachilus Leconte (Smithsonian Misc. Coll., vol. 3, no. 3, p. 175, 1861) in Coleoptera. I therefore propose to replace Anachilus with Simoxenops." (Chapman 1937).
(Furnariidae; Ϯ Plain Xenops X. minutus) Gr. ξενος xenos stranger; ωψ ōps, ωπος ōpos face, countenance; "GENUS 25. XENOPS Hoffmannsegg (ξενος inusitatus, novus, ωψ vultus) (Steigschnabel Germ.) Rostrum mediocre, rectum porrectum, conicum acutum valde compressum, inverse cultratum i.e. culmine recto, gonyde recurva ascendente. Tomia integerrima. Nares basales, laterales, ovatae, patulae. Lingua. . . . . Alae mediocres. Cauda mediocris, emarginata, rectricibus 12 laxis, lateralibus brevioribus. Pedes ambulatori, mediocres, congrui. Digiti antici basi coadunati, laterales subaequales, medio breviores. Hallux digitum medium aequans. Unguis posticus antico medio paullo major. Acropodia scutulata. Species: Xenops genibarbis n. sp. e Cametà Brasiliae" (Illiger 1811); "Xenops Illiger, Prodromus, 1811, p. 213. Type, by monotypy, Xenops genibarbis Illiger." (Peters 1951, VII, 143).
Synon. Anecorhamphus, Neops.
(Tityridae; Ϯ White-naped Becard X. albinucha) Gr. ξενος xenos stranger; genus Psaris Cuvier 1817, tityra; "Pachyrhamphus albinucha, having a pycnaspidian tarsus, is a member of the family Cotingidæ; but it is so different in other points of its structure from the typical members of the genus in which it was placed by its describer that there can be no question it does not belong there. ... but on comparison with the various genera in this and other "subfamilies" it is found to approach more nearly to Casiornis in structure than to any other. The differences, however, from Casiornis, are so numerous and so great, that there seems to be no resource but to establish a new genus for its reception. I, therefore, propose as the name for the new genus the name Xenopsaris. The characters of the genus and its type species are as follows: Xenopsaris genus novum Cotingidarum. (Type, Pachyrhamphus albinucha Burmeister.) GEN CHAR.: Similar to Casiornis Bp., but bill very much smaller, narrower, and more elevated at the base, with culmen gradually curved thoughout its length; nasal and rictal bristles much less developed; tail nearly as long as the wing, emarginate and rounded (i.e., double-rounded), the feathers rather narrow; primaries exceeding secondaries by more than length of bill; the second, third, and fourth quills nearly equal, and longest; first primary equal to sixth; tarsus about equal to length of bill measured from the rictus; middle toe considerably shorter than tarsus (slightly less than exposed culmen); feathers of pileum lengthened and broad, forming when erected a full, rounded crest; along each side of the lower back and rump a conspicuous tuft of pure white cottony feathers. Color (both sexes) grayish above, with glossy black, full-crested pileum, the lower parts, sides of head (below eyes), nuchal collar, lores, and frontlet, white. Xenopsaris albinucha (BURM.). ... This small bird lives in the sedge of the shores of the Rio de la Plata, near Buenos Ayres, and has a somewhat melancholy temperament, sitting quite still in the same place a long time." (Ridgway 1891). The White-naped Becard or Xenopsaris was formerly variously considered to be a member of the Cotingidae or of the Tyrannidae.