220 FALCONID-E. 



10. Urubitinga melanops. 



Streamed Falcon, Lath. Gen. Si/n. Suppl. i. p. 34 (1787). 



Falco melauops, Lath, Ind. Oni. i. p. 37 (1790); Temm. PI. Col. i. 



pi. lOo (1824). 

 Dajdaliou melauops, Vigors., Zool. Jotirn. i. p. 338 (1824), 

 Astur melanops, Less. Man. d'Orn. i. p. 94 (1828). 

 Leucoptemis melanops, Kaitp, Isis, 1847, p. 210 ; Bp. Consp. i. p. 19 



(1850) ; Pelz. Verh. z.-b. Wien, 1862, p. 140 ; Scl. ^- Salv. Ex. Orn. 



p. 122 (1868) ; Pelz. Orn. Bras. pp. 3, 39-5 (1871) ; Salv. Ibis, 1872, 



p. 242 ; Scl. 4- Salv. A^otnencl. p. 119 (1873). 

 Buteo melanops, Grai/, Gen. B. i. p. 12 (1849); Strickl. Orn. Syti. 



p. 36 (1855) ; Gray, Hand-l. B. i. p. 8 (1869). 

 Asturina melanops, ScU. Mus. P.-B. Asturinae, p. 10 (1862). 



Adult. Entire head and neck white, with narrow black shaft- 

 lines ; lores, feathers round the eye above the ear-coverts black ; 

 rest of the upper surface black, oceUated with white spots to the 

 feathers, less distinct on the -wing- coverts, which are somewhat 

 tipped with white ; tail black, tipped with whity brown, and broadly 

 banded with white at about a third of its length from tip. Total 

 length 16-8 inches, ciUmen 1-4, wing 9-1, tail 6-5, tarsus 2-65. 



Hah. Amazonia and Guiana. 



a. Ad. St. S. America. Pm'chased. 



b. Ad. st. Brazil. Purchased, 



11, Urubitinga semiplTunbea. 



Leucoptemis semiplumbea, Later. Ann. Lye. N. Y. vii. p. 288 (1861) ; 



Scl. :^- Salv. Ex. Orn. pi. Ixi. (1868) ; Salv. Ibis, 1872, p. 243 ; Scl. 



Sr Salv. Xojnend. p. 119 (1873). 

 Buteo semiplumbeus. Gray, Hand-l. B. i. p. 9 (1869), 



Adult female. Above dark slaty grey, the wing-coverts rather 

 blacker ; qiulls black, the secondaries more slaty below, white at 

 base, ashy grey towards tip, the inner web more or less distinctly 

 barred with greyish black ; upper tail-coverts and tail black, the 

 latter with a single band of white across the middle ; sides of face 

 and of neck ashy grey, like the head ; entire under surface of body, 

 including under wing- and tail-coverts, pure white, with a few 

 black shaft-stripes on sides of throat and breast ; cere and orbits 

 orange-yellow ; bill black ; feet orange, claws black. Total length 

 15 inches, culmen 1-2, wing 8*2, tail 7*8, tarsus 2-4, {Mus. Salvin 

 and Godman.') 



Hah. Panama and Costa Rica, 



12. Urubitinga princeps. 



Leucoptemis princeps, Scl. P. Z. S. 1865, p. 429, pi. xxiv. ; Set. 8f 

 Salv. Ex. Orn. p. 122 (1868); Salv. Ibis, 1872, p. 243; Scl. ^ 

 Salv. Nome7icl. p. 119 (1873). 



Buteo princeps, Gray, Hand-l. B. i. p. 9 (1869). 



Adult female (type of species). Above slaty black, with a marginal 

 shade of ashy grey to the feathers, those of the nape white at base, the 



