82 FALCONIDA. 
Arenas (0. S.7), San José (v. Frantzius 12, Cherrie**), Angostura (Carmiol }*), 
Jiménez. Pozo Azul de Pirriz, Talamanca (Zeledon °°), Miravalles (Underwood), 
La Palma, Gulf of Nicoya (Nutting 23), Mirabayes, Nicoya (£. Arcé); PANAMA 
(M‘Leannan 118), Chitra, Bugaba ', Chepo (£. Arcé), Punta de Sabana, Forests 
near Laguna de Pita (Festa **).—CoLOMBIA 43. VENEZUELA; ANTILLES, St. Vincent, 
St. Lucia. 
The Black Buzzard-Hawk is a summer visitor to the Southern United States, nesting 
in Arizona and Texas. It is widely distributed throughout Mexico, and probably 
breeds there, as it does in Guatemala, where Owen procured the eggs 9, 
Grayson says that U. anthracina frequents the esteros and watercourses in the hot 
regions 19, and Sumichrast found it at an elevation of 1000 metres above the sea-level *!. 
Its food consists chiefly of land-crabs, reptiles, and fish. Captain Bendire records 
having found a nest about thirty feet from the ground, composed of large sticks much 
decayed beneath, and lined several inches deep with leaves of the cotton-tree. The 
eggs are usually one or two in number, of a pale greenish-white, marked with small 
irregular spots and lines varying in colour from light to dark brown. 
It is said to be very shy during the breeding-season, but much tamer in its winter 
haunts. 
LEUCOPTERNIS. 
Leucopternis, Kaup, Isis, 1847, p. 210; Salvin, Ibis, 1872, p. 241. 
Urubitinga, partim, Sharpe, Cat. Birds Brit. Mus. i. p. 212. 
The structural differences between the present genus and Urubitinga are very slight, 
and Dr. Sharpe united them in the ‘Catalogue of Birds.’ The chief characters in 
Leucopternis consist in the somewhat shorter tarso-metatarsus and the proportionately 
longer toes, while a more important feature is the similarity of the plumage in both 
the adult and young birds, whereas in Urubitinga the difference in this respect is 
strikingly accentuated. 
Of the ten species of Leucopternis known, four are inhabitants of Central America, 
L. ghiesbreghti and L. princeps being confined to that region. 
1. Leucopternis ghiesbreghti. 
Buteo ghiesbreghti, DuBus, Esq. Orn. t. 1’; Scl. P.Z.8, 1857, p. 227°; Scl. & Salv. Ibis, 1859, 
p. 217°; Lawr. Ann. Lyc. N. Y. vii. p. 288°; Salv. P. Z. 8S. 1867, p. 158°. 
Pecilopternis ghiesbrechti, v. Frantz. J. f. Orn. 1869, p. 368°. 
Leucopternis ghiesbreghti, Scl. & Salv. Ex. Orn. p. 1217; Salv. P. Z.S. 1870, p. 215°; Ibis, 1872, 
p. 823°; Ridgw. Bull. U. S. Geol. Surv. ii. p. 174 ©. Zeledon, An. Mus. Nac. Costa Rica, 
1887, p. 126"; Ridgw. Pr. U. 8. Nat. Mus. x. p. 592; Richmond, Pr. U. S. Nat. Mus. 
xvi. p. 521°; Sharpe, Hand-l. Birds, 1. p. 259 “ 
Urubitinga ghiesbreghti, Sharpe, Cat. Birds Brit. Mus. i. p. 217 . Boucard, P. Z. S. 1878, p. 44°; 
Sumichrast, La Nat. v. p. 236”. 
