. Catalogue of the Birds in the British Museum. 36. THEASAETTJS. 223 Morphnus cristatus, Less. Traits, p. 51, t. 11. fig. 2 (1831). Ilarpyia fiuianensis, Szvains. Classif. B. ii. p. 208 (1837). Tbrasaetus guianensis, Kaup^ Mus. Senckenh. iii. p. 260 (1845). Astur guianensis, Schl. 3Ius. Astures, p. 25 (1862). Adult female. Above black, somewhat shaded with brown on the margins of the feathers, the upper tail-coverts tipped with white, the outermost also barred, especially near the base, which is entirely white; upper wing-coverts black, with ashy white margins, pro- ducing a barred appea
. Catalogue of the Birds in the British Museum. 36. THEASAETTJS. 223 Morphnus cristatus, Less. Traits, p. 51, t. 11. fig. 2 (1831). Ilarpyia fiuianensis, Szvains. Classif. B. ii. p. 208 (1837). Tbrasaetus guianensis, Kaup^ Mus. Senckenh. iii. p. 260 (1845). Astur guianensis, Schl. 3Ius. Astures, p. 25 (1862). Adult female. Above black, somewhat shaded with brown on the margins of the feathers, the upper tail-coverts tipped with white, the outermost also barred, especially near the base, which is entirely white; upper wing-coverts black, with ashy white margins, pro- ducing a barred appearance, the greater series ashy brown, barred with black and mottled with darker brown on the interspaces ; quills black, somewhat mottled with ashy brown, externally and narrowly tipped with whity brown, the secondaries more distinctly; tail black, tipped with whity brown and crossed with three bands of ashy brown, mottled with darker brown, the base of the tail somewhat varied with whitish ; head and neck greyish brown, with more or less distinct hoary margins to the feathers, plainer on the ear-coverts; head with a long crest, the feathers of which are brown, more or less white at base, with a distinct subterminal spot of black ; chest ashy brown, clearer than the head, and having faint hoary margins to the feathers; rest of under surface of body white, with pale rufous cross bars, darker and browner on the thighs, and gradually disappearing on the under tail-coverts; under vsdng- coverts white ; inner lining of quills ashy white, mottled with brown and crossed with broad blackish bands. Total length 3G inches, culmen 2-4, wing 19-3, tail 17, tarsus 4-6. Hab. The same as that of the genus. a. Ad. sk. British Guiana. Sir R. Schomburgk [C.]. h. 2 ad. St. Peruvian Andes. E. Bartlett, Esq. [ c. Ad. sk. Upper Amazon. A. R. Wallace, Esq. [C.]. d. Skeleton. Purchased. 86. THRASAETUS. Type. Hai-pyia, Vieill. Analyse, p. 24 (1816) > T. harpyia. Thrasaetus, Gray, P. Z. S. 1837,
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