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. P.-B. 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.J. 



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, p. 108 T. harpyia. 



Nothrophrontes, Gloger, Handh. Naturq. p. 219 (1842) T. harpyia. 



Bill of Thrasaetus harpyia (reduced). 



