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Show 109 XI8U8 PIL. EATUS. Falco pileatus TEMM. PI. Col. i, 1824, pi. 205.- MAX. Beitr. iii, 1830,107. Aecljnier pileatus Vi< i Zoiil. Journ. i, 1824, 338.- GRAY, Gen. i, 1849,29 ; Hand List, i, 1869,33.- BO. NAP. Consp. i, 18. r> 0,32.- STRICKL. Orn. Syu. i, 18f> 0,109( in part).- SCL. & SALV. EX. Orn. xi, 1869,170; Nom. Neotr. 1873,120.- PELZ. Orn. Bras, i, t 1871, *, 399.- SHAKPE, Cat. Ace. B. M. 1874,153. Sisus pileatus LESS. Man. I, 1828, 98.- BURM. Th. Bras, ii, 1855, 73.- SOIL. MUS. P.- B. Astures, 18( 52,36; Rev. Ace. 1873,70. Hiuspileatus var. pileatus Rnxiw. Boston Soc. Pr. N. II. May, 1873, c9. Cooperastur pileatus BONA P. Rev. ot Mag. Zool. 1854,538. Falco beskii LiciiT. Nom. A v. 1854,4. Hab.- Brazil. Wing, 8.10- 10.40: tail, 6.80- 9.00; culmen, 0.50- 0.70; tarsus, 2.20- 2.65 ; middle toe, 1.35- 1.70. Fourth and fifth quills longest, first shortest; outer five with inner webs emarginated. Tail slightly rounded. Adult:- Uniform plumbeous, except on the pileum, tibia?, crissum, lining of the wing, remiges and rectrices; darker above, lighter beneath, where inclining to bluish- gray, the shafts conspicuously darker; pileum black; tibiae and lining of wing uniform cinnamon- rufous; crissum white, somewhat tinged with gray. Tail crossed by four to five wide bands of black, the interspaces grayish- brown above, white on the under surface. Inner webs of primaries marked with transverse spots of white or mottled gray and white. Young:- Above, dark sepia brown, the feathers bordered terminally with rusty, the seapulars, upper tail- coverts, aud inner secondaries with conspicuous, large, transverse spots of white, many of them exposed. Pileum blackish, with rustyocbraceous streaks in the superciliary region. Nape ochraceous, each feather with a central ovate stripe ef blackish- brown; sides of neck similar; cheeks more finely streaked. Tail narrowly tipped with white, and crossed by four or five wide bands of brownish black, the interspaces being grayish- brown ( sometimes mixed with white) on the upper surface, and white on the lower. Lower parts ochraceons or oehraceous- white, the side of the breast with lanceolate stripes of blackish- brown, the sides with similar but broader stripes, or with broad spots; crissum immaculate. L'ning of the wing ochraceons, usually more or less spotted. Sexes alike in color, but differing in size, as follows:- Male:- Wing, 8.10- 8.40; tail, 6.80- 7.20; admen, 0.50- 0.60; tarsus, 2.20- 2.30; middle toe, 1.35. ( Five specimens.) Female:- Wing, 9.80- 10.40; tail, 8.70- 9.00; culmen, 0.06- 0.70; tarsus, 2.50- 2.65; middle toe, 1.65- 1.70. ( Seven specimens.) Specimens of this species vary considerably, especially those in the young plumage. An adult in the museum of the Boston Society of Natural History ( No. 573, Lafresnaye collection) differs from all others we baveseen, in having the abdomen and sides strongly tinged with rufous. Two young examples before us differ quite conspicuously in the markings of their lower parts: No. 50,937 is deep ochraceous beneath, the tibiae free from markings, with the exception of two or three small lanceolate streaks on the longer feathers of one thigh. The other specimen ( No. 50,936) is nearly white beneath, the tibite deeper ochraceous, and thickly marked with large spots of brown. In this specimen, the light bands on the middle tail- feathers become white next the shaft. Koth are female*, in very young plumage. |