384 CHECK-LIST OF NORTH AMERICAN BIRDS. 



Order PALUDICOL^. 



Suborder GRUES. 



Family GBUIDiE. 



Genus GRTJS Pallas. 



6nis haydeni Marsh. [41.] 



Grus haydeni Maesh, Amer. Joum. Sci., ser. 2, XLIX, 1870, 214. 



Pleistocene?; Nebraska. 



Grus pro&vus Marsh. [42.] 



Grua proavus Marsh, Amer. Joum. Sci., scr. 3, IV, 1872, 261. 

 Pleistocene; New Jersey. 



Genus ALETORNIS Mabsh. 



Aletornis Mabsh, Amer. Joum. Sci., ser. 3, IV, 1872, 256. Type, by 

 subs, desig., Aletornis nobilis Marsh (Hay, 1902). 



Alet6niis b611us Marsh. [48.] 



Aletornis bellus Marsh, Amer. Joum. Sci., ser. 3, IV, 1872, 258. 



Eocene (Bridger); Wyoming. 



Aletoniis gracilis Marsh. [47.] 



Aletornis gracilis Mabsh, Amer. Journ. Sci., ser. 3, IV, 1872, 258. 



Eocene (Bridger); Wyoming. 



Aletornis n6bilis Marsh. [44.] 



Aletornis nobilis Marsh, Amer. Joum. Sci., ser. 3, IV, 1872, 256. 



Eocene (Bridger); Wyoming. 



