11. poLYiiintus. [i'S 



a. Juv. St. South America. 



b. .Juv. St. South America. SirW. Burnett and AdmiralP'itzroy [P.] 



c. Pull. St. South America. Sir W. Burnett and Admiral Fitzroy[P ' 



d. Juv.sk. .South America. SirW.Buruettand AdmiralFitzroyl P. 



e. Ad. sk. Hermit Island. The Admiralty [P.]. 

 /. Ad. sk. Straits of Magellan. The Admiralty IP.]. 



ff. Ad. sk. Island of Mexiana. A. R. Wallace, Esq. [C. 



h. Juv. sk. Island of Mexiaua. A. R. Wallace, Esq. [C. 



i. Ad. sk. Rio de Janeiro. JJr. Wucherer [C.]. 



k. Skeleton. Purchased. 



/. Skeleton. Zoological Society. 



2. Polyborus cheriway. 



Falco cheriwa.y,Jacq. Beitr. p. 17, tab. 4 (1784). 



Polyborus brasiliensis, Amlub. B. Am. fol. pi. lUl et ed. 8vo, i. 



p. 21, pi. 4 (1839) ; Allen, Bull. Ilarv. Coll. ii. p. 337 (1871). 

 Polyborus cheriway. Cab. in Schonib. Reis. Guian. iii. p. 741 (1848). 

 Polyborus tharus, Cass. B. Calif, p. 113 (1855): id. in Batrd's B.N. 



v4m. p. 45 (1860). 

 Polyborus auduboni, Cass. Pr. Phil. Acad. 18G5, p. 2 ; Baird in 



Cooper, B. Calif, i. p. 492 (1871) ; Gundl. J. f. O. 1871, p. 357 ; 



Scl. ^- Salv. Noniencl. Av. Neotr. p. 123 (1873).' 

 Polyborus tharus, var. auduboni, Coues, Key, p. 220 (1872). 



Adult female. Upper surface black, the lower back and rump in- 

 cluded ; the upper tail-coverts white with remains of a few narrow 

 blackish cross bars ; hind neck and interscapulary region crossed 

 with creamy buff bars, giving a very distinctly waved appearance ; 

 wings black, the greater coverts and outer margin of secondaries 

 somewhat shaded with brownish ; primaries white at base, freckled 

 and barred with dusky brown for the greater part of their extent, the 

 inner web whitish below, with faint indications of dusky cross bars ; 

 tail creamy buff, crossed with thirteen or fourteen cross bars of 

 dusky black, the terminal third entirely black, forming a very broad 

 band across the end of the feather ; ear-coverts, sides of neck, and 

 fore neck uniform creamy buff, the upper breast crossed with black 

 bars ; remainder of breast and thighs black ; the abdomen and under 

 tail- coverts creamy buff, a few bars of this colour extending up on 

 to the black of the lower breast ; under wing-covcrts black ; cere, 

 loral spaces, and cheeks bright red ; bill pale bluish, edged with 

 yeUow; feet yellow; iris dark brown. Total length 23 inches 

 culmen 2-25, wing 16-5, tail 9-5, tarsus 3-4. 



Adult male. Similar to, but a little smaller than, the female 

 Total length 23 inches, wing 15-8, tail 9, tarsus 3-4. 



Young. Above dark brown washed with paler brown, the lower 

 back and rump uniform with rest of back ; upper tail-coverts white, 

 very slightly mottled with brown ; tail marked as in adult, but the' 

 bars brown instead of black; feathers of interscapulary region 

 broadly margined and streaked along the shaft with buffj' white ; 

 wings brown, the innermost secondaries and a few of the greater 

 coverts tipped with huffy white, primaries white mottled with\rown 

 bars near the base ; sides of face, throat, fore nock, abdomen and 



VOL. I. J. 



