12. IBTCTER. 39 



ITjycter australis, Kaup, Arch.f. Katurg. xvi. p. 41 (1850). 

 Polyborus australis, Bp. Comp. i. p. 13 (1850) : Schl. Mus. P.-B. 



Polybori, p. 3 (1862). 

 Aetriorchis australis, Bp. Rev. et Mag. de Zool. 1854, p. 11. 



AduJt. Above black ; the nape and hind neck covered with lan- 

 ceolate streaks of white, as also a few of the outer upper tail-coverts ; 

 quiUs dark brown, very slightly tipped with whitish ; tail black, 

 broadly tipped with white ; under surface of body black, with very 

 distinct lanceolate whit« streaks on the throat and breast, reduced 

 to tiny white apical spots on the feathers of the abdomen ; inner 

 face of thighs and vent-feathers tawny; under tail-coverts black, 

 with whitish margins ; under wing-coverts black, the outer ones 

 externally tawny ; crop-patch lemon-yellow ; bill yellowish, bluish 

 horn-colour at base ; cere and feet of a bright lemon-yellow ; iris 

 dark brown. Total length 25 inches, culmen 1-9, wing 16-7, tail 

 11, tarsus 3'3o. 



Youtu/. Above smoky brown, clearer on the wings ; head and 

 neck blackish, the sides of the latter rufous ochre, with brownish 

 margins to the feathers ; the feathers of the crown and nape with 

 narrow and indistinct fulvous tips ; quills brown, primaries clear 

 ochre at base ; upper tail-coverts and tail ochraceous brown, deeper 

 brown on the external margins ; under surface of body smoky brown, 

 with rufous-brown centres to the breast-feathers, not very distinct ; 

 bin horn-brown, yellowish at tip of lower mandible ; cere and feet 

 slate-colour. Total length 24-5 inches, culmen 1-25, wing 16-5, 

 tail 10-5, tarsus 3. 



Hab. Falkland Islands. 



«, h. Ad. st. S. America [?]. Pm-chased. 



c. Juv. St. Straits of Magellan [?]. The Admiraltj' [P.]. 



d. Juv. sk. Berkeley Sound. The Admiralty "P.]. 

 c. Ad. St. S. Salvador Bay, E. Falkland. Antarctic Expedition. 

 /. Ad. sk. Falkland Islands. Antarctic Expedition. 

 g. Juv. sk. Falkland Islands. Sir W. Burnett and 



7. Ibyctei* cMmachima. 



Chimachima, Azara, Apunt. i. p. 50 (1802). 



Polyborus chimachima, Vieill. N. Did. v. p. 259 (1816); D'Orh. Vmj. 



Am. 3Ier. p. 63 (1835); Schl. Mils. P.-B. Polybori, p. 5 (1862). 

 Falco crotophagus, Mm: Beis. Bras. i. p. 297 (1820). 

 Falco degener, Lwht. Verz. Dotibl. p. 61 (1823). 

 Milvago ochrocephalus, Spi.r, Av. Bra^. i. p. 12, pi. 5 (1824) ; Burm. 



Th. Bras. ii. p. 36 (1856). 

 Gj-mnops strigilatus, Spix, Av. Bras. i. p. 10, pi. 4 (1824). 

 Polyborus degener, Vig. Zool. Joiirn. i. p. 336 (1824). 

 Haiiaetus ochrocephala, Cuv. Rcgne An. i. p. 327 (1829). 

 Haliaetus chimachima, Less. Traite, p. 43 (1831). 

 Milvago chimachima, Gray, List Gen. B. p. 2 (1841); Cab. in Schomb. 



Beis. Guian. iii. p. 741 (1848) ; Bp. Comp. i. p. 12 (1850) ; Strickl. 



Orn. St/n. p. 20 (1855) ; Pelz. Verh. z.-b. Wien. 1862. p. 137 ; Gm-ne>i, 



Cat. Rapt. B. Xorw. Mus. p. 27 (1864) ; Grag, Iland-l. B. i. p.'o 



