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Show 131 GEXNUS GERANOAETUS, KAUP Gtranoattua KALT, Class. Siiug. Vog. 1844, 122. Type, Spizaetus melanoleucua VIEILL. Geranaetus AGASS. Heteroaetus KAUr, 1845.- Contr. Om. 1850,74.- SCXD. Disp. Ace. Hemeroharp. 1874,27. Heterattua KAUP, Isis, 1847 { fide Sundevall).- REICIIENB. 1850. CH.- Form intermediate between that of Buteo and Haliaetiis. Wings very long, the primaries rigid, and tail very short and graduated. Bill much as in Haliaetus, the culmen being arched above the horizontal, but slightly convex, upper outline of the cere, the superior tomium doubly sinuated, and the tip well produced and sharp. Nostril obliquely horizontal. Feet typically b'uteonine; tarsus, about one and a fourth times the middle toe; outer toe much longer than the inner; posterior toe much shorter than the inner. Tarsus with the anterior and posterior series of transverse scutellaj very continuous and perfect; web between the outer and middle toes well developed. Wing lar^ e and pointed; third or fourth quill longest; first shorter than seventh ; oater five with their inner webs deeply emarginated. Tail less than half the wing, graduated, the feathers very rigid. Feathers of the head and neck cuneate, approaching lanceolate; tibial plumes well developed; secondaries, 17. Somewhat intermediate between Buteo and Haliaetus, this genus is nevertheless very distinct from either. It is, perhaps, most like the latter, with which it agrees in. short, graduated tail, with rigid feathers, deep emargination of the five outer primaries, general form of the bill, and lanceolate form of the feathers of the head and neck. The feet, however, are much more like those of Buteo, there being a well- developed web between the outer and middle toes, of which not a trace is seen in HaHaetus, while the scutellation is also that of the typical Buteones. But one species is at present known. GERANOAETUS MELANOLEUCUS. tyizattue melanoleucua VEIIX. N. D. xxxii, 1819,57. HaUaetua melanoleucua D'ORB. & LAVR. Svn. AY. 1838, 3.- D'ORB. Voy. Am. Me> id. Ois. 1847,76.- BURM. Th. Bras, ii, 1855,54.- GRAY, Hand List, i, 1869,17. Pontoaetus melanoleucua GRAY, Gen. i, 1845,18. Cuneuma melanoleucua GRAY, List Ace. B. M. 1848,25. Geranoaetus melanoleucua STRICKL. Om. Syn. i, 1855, 55.- BURM. Reise La Plata St. ii, 1861, 425.- PELZ. Om. Nov. 1865,7 ( Chile) ; Orn. Bras. 1871, 49, 397.- ORTOX, Am. Nat. 1871, 624 ( Quito Valley).- HUDSOX, P. Z. S. 1872, 534 ( Rio Negro, Patag.).- LKB, Ibis, 1873,131,136 ( Arg. Rep.).- SCL. & SALV. Ibis, 1869, 284 ( Cape Negro, Str. Magellan, Nov. 29); P. Z. S. 1869,155 ( Tnngasnca, Pern); Nona. Neotr. 1873,119.- RIGW. Pr. BoBton Soc. N. H. May, 1873, 68.- SCL. & BJLLV. Nom. Neotr. 1873,119. Aaturina melanoleuca SCHL. Mas, P.- B. Astnrinse, 1862, 5; Rev. Ace. 1873,102. Buteo melanoleucua SHARPS, Cat. Ace. B. M. 1874,168. Snzaituafueceacena VIEILL. N. D. xxxii, 1819, 55. raleo aguia TEMM. PI. Col. i, 1824, pi. 302. HaUaetua aguia Cuv. Reg. An. I, 1829, 327.- LESS. Tr. 1831, 42. Geranoaetus aguia KADP, Contr. Orn. 1850, 74.- BONAP. Consp. i, 1850, 15. Buteo aguia CABAN. & TSCHXJDI, Arch. f. Natnrg. 1844, 264; Fauna Per. 1844, 89.- SUND. Av. Tent. 1873,107. Heteroaetus aguia KAUP, Contr. Orn. 1850, 74. Aquila obacura y blanca AZARA, Pax. Par. i, 1802, 61. & q*\ laparda AZARA, I. c. 65. Sab.- Monntainous districts of Western and Southern South America,, from Patagonia northward to New Granada and Southern Brazil. |
