FOSSIL BIRDS. 433 



Geranoaetus ales Wetmore. 



Geranoaetus ales Wetmore, Ann. Carnegie Mus., XVI, No. 4, April 10, 

 1926, 403, pi. 38, figs. 1-5. 



Miocene (Lower Harrison beds); Quarry No. 2, Agate Springs Fossil Quar- 

 ries, Sioux County, Nebraska. 



Geranoaetus conterminus Wetmore. 



Geranoaetus conterminus Wetmore, Bull. Amer. Mus. Nat. Hist., XLVIII, 

 Art. 12, Dec. 3, 1923, 497, figs. 11-13. 



Lower Pliocene (Snake Creek beds); 20 miles south of Agate, Sioux County, 

 Nebraska. 



Geranoaetus contortus Wetmore. 



Geranoaetus contortus Wetmore, Bull. Amer. Mus. Nat. Hist. XLVIII, 

 Art. 12, Dec. 3, 1923, 492, figs. 6-9. 



Upper Miocene (Snake Creek beds); 20 miles south of Agate, Sioux County, 

 Nebraska. 



Geranoaetus dananus (Marsh). 



Aquita danana Marsh, Amer. Journ. Sci., ser. 3, II, Aug., 1871, 125. 

 Miocene (Loup Fork) : Loup Fork River, Nebraska. 



Geranoaetus fragilis Miller. 



Geranoaetus fragilis L. H. Miller, Univ. Calif. Publ., Bull. Dept. Geol. 

 VI, No. 12, Oct. 9, 1911, 315, figs. 5a, 56. 



Pleistocene: Rancho La Brea, Los Angeles, and Carpinteria, California. 



Geranoaetus grinnelli Miller. 



Gcrarwaetus grinjiclli L. H. Miller, Univ. Calif. Publ., Bull. Dept. Geol., 

 VI, No. 12, Oct. 9, 1911, 314, figs. 4a, 46. 



Pleistocene: Rancho La Brea, Los Angeles, and Carpinteria, California. 



Genus URUBITINGA Lafresnaye. 



Urubitinga Lafresnaye, Diet. Univ. Hist. Nat., II, 1843, 786. Type, by 

 tautonymy, L'Aigle Autour, Urubitinga do Cuvier = Falco urubitinga, 

 Gmelin. 



Urubitinga enecta Wetmore. 



Urubitinga enecta Wetmore, Bull. Amer. Mus. Nat. Hist., XLVIII, Art. 

 12, Dec. 3, 1923, 500, figs. 14-18. 



Early Middle Miocene (Sheep Creek Beds); 20 miles south of Agate, Sioux 

 County, I*Jebraska. 

 29 



