Page:Birds of North and Middle America partV Ridgway.djvu/190

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162
BULLETIN 50, UNITED STATES NATIONAL MUSEUM.

and more pointed, the longest primaries exceeding secondaries by more than length, of exposed culmen; a tuft of elongated soft feathers on each side of neck; larger (wing 95 mm. or more). (Pseudocolapteæ.)

Pseudocolaptes (p. 196).

cc. Nostril oval or roundish, not distinctly operculate. (Automoleæ.)
d. Basal phalanx of middle toe wholly united to both outer and inner toes.
e. Bill much longer, the exposed culmen longer than tarsus, its length from nostril equal to two and a half times its depth at loral antiæ.

Hyloctistes (p. 199).

ee. Bill much shorter, the exposed culmen shorter than tarsus, its length from nostril equal to but little more than twice its depth at loral antiæ.
f. Bill relatively broader basally and more compressed terminally, the tip of maxilla abruptly and strongly uncinate; upper parts conspicuously streaked.

Ancistrops (extralimital).[1]

ff. Bill relatively narrower basally and less compressed terminally, the tip of maxilla not abruptly nor strongly, if at all, uncinate; upper parts not streaked.
g. Bill excessively compressed, its width at loral antiæ equal to only about two-thirds its depth at same point and less than one-third the distance from nostril to tip of maxilla; claw of hallux very large, as long as the digit.

Anabazenops (extralimital).[2]

gg. Bill only moderately compressed, its width at loral antiæ equal to more than two-thirds its depth at same point and more than one-third the distance from nostril to tip of maxilla; claw of hallux smaller, decidedly shorter than the digit.

Philydor (p. 201).

dd. Basal phalanx of middle toe not wholly united to lateral toes.
e. Bill relatively smaller, more slender, more compressed, its width at loral antiæ much less than its depth at same point, not distinctly if at all uncinate; shafts of rectrices softer at tip.
f. Bill smaller, the culmen (from base) shorter than tarsus; anterior toes more extensively united basally.
g. Bill smaller and more slender, more decurved terminally, with gonys not ascending terminally.

Heliobletus (extralimital).[3]

gg. Bill larger and stronger, less deciurved terminally (except at extreme tip), with gonys strongly ascending terminally.

Xenicopsis (p. 205).

ff. Bill larger, the culmen (from base) longer than tarsus; anterior toes less extensively limited basally.

Automolus (p. 211).

ee. Bill larger and stouter, less compressed, its width at loral antiæ nearly equal to its depth at same point, distinctly uncinate; shafts of rectrices more rigid at tip.

Rhopoctites (p. 222).


  1. Ancistrops Sclater, Cat. Am. Birds, 1862, 157. Type, Anahates lineaticeps Sclater = Thamnophilus strigilatus Spix. (Upper Amazon Valley; monotypic.)
  2. Anabazenops Lafresnaye, Diet. Univ. d'Hist. Nat., i, 1841, 411. Type, Sitta fusca Vieillot. — Anabatoides Burmeister, Syst. Ueb. Th. Bras., iii, 1856, 23. Type, Sitta fusca Vieillot. (Southeastern Brazil; monotypic.)
  3. Heliobletus Reichenbach, Handb. der Spec. Orn., 1853, 201. Type, Dendrocolaptes superciliosus Lichtenstein. (Southeastern Brazil; monotypic.)