149 
MORPHNUS GUIANENSIS. 
Petit Aigle de Guiane Mauduyt, Euc. Moth. 1784, 1*257. 
Faleo guianensis Daud. Traite Orn. ii, 1800, 78 (ex Mauduyt), (juv.). 
Morphnu s guianensis Cuvier, Keg. Au. i, 1817, 318.— Gray, Gen. B. i, 1845, 15; 
Hand List, i, 1869, 16.— Boxai*. Consp. Av. i, 1850, 30. — Strickl. Oru. Syu. i, 
1855, 24.—Burnt. Th. Bras, ii, 1856, 66. — Pklz. Orn. Bras. 1871, 4, 397. — Scl. &. 
Salv. Nom. Neotr. 1873, 120.— Eidgw. Pr. Boston Soc. 1873, 71.— Sharpe, Cat. 
Aec. Brit. Mus. 1874, 222. 
Harpyia guianensis Swaixs. Classif. B. ii, 1837, 208. 
Thrasaetus guianensis Kaup, Mus. Senek. iii, 1845, 260. 
Astur guianensis Schleg. Mus. Pays-Bas, Astures, 1862, 
Faleo sonnini Shaw, Gen. Zool. vii, 1809, 67. 
Morphnus sonnini Steph. Gen. Zool. xiii, 1825, 18. 
Faleo delicatus Shaw, l. c. 1809, 67. 
Spizaetus variegates Vieill. Enc. Moth, iii, 1823, 1257. 
Morphnus eristatus Less. Tr. 1831, 51, t. ii, f. 2. 
or, 
Halt. — Northern South America; Br. Guiana (Schomb.); Peruvian 
Andes (Bartlett) ; Upper Amazon (Wallace) ; New Granada (Nat. 
Mus.); Panama {fide Sharpe). 
Wing, 17.50-20.25: tail, 15.00-18.00; culmeu, 1.35-1.40; tarsus, 4.00 
-4.GO; middle toe, 1.80-2.10. Adult: —(I.) Prevailing color brownish- 
black, uniform above, the lower parts everywhere transversely banded 
with white, the bars about 0.25 wide, and about equal in width to the 
black ones. Secondaries and primaries with indistinct broad bands of 
lighter brownish-dusky. Tail black, crossed by about five bands of 
mottled grayish,* and narrowly tipped with white. Upper tail-coverts 
tipped with white (No. 17781, }, Nat. Mus. Truando, New Granada; Dr. 
Schott). (II.) Generally similar, but head, neck, and breast uniform 
brownish-ash, the crest-feathers black subterminally. Beneath white, 
with more or less distinct and continuous bars of rufous, chiefly on the 
tibiae, abdomen, and crissum. Tail with only three gray bands (exclu¬ 
sive of the narrower terminal one), these sometimes nearly equal in 
width to the black ones. (III.) Similar, but white of* the lower parts 
without any trace of bars. Young. —Head, neck, and lower parts 
uniform white; wing-coverts finely mottled with light ash, and the 
whole upper surface much variegated with the same. Tail more con¬ 
fusedly and narrowly funded, the black and ashy bands about equal in 
width. 
List of specimens in United States Xational Museum. 
Catalogne- 
iiu ruber. 
Sex and 
age. 
Locality. 
From whom received. 
1*781 
<S ad. 
Xew Granada (Truando). 
Arthur Schott. 
Other specimens examined .—In mus. Philad. Acad., 3; Boston Soc., 3 ; total number 
examined, 7. 
' These bands growing gradually broader terminally. 
