384 CHECK-LIST OF NORTH AMERICAN BIRDS. 



ORDER PALUDICOL^E. 



SUBORDER GRUES. 



FAMILY GRT7IDJE. 



GENUS GRUS PALLAS. 



Grus haydeni MARSH. [41.] 



Grus haydeni MARSH, Amer. Journ. Sci., ser. 2, XLIX, 1870, 214. 

 Pleistocene ? ; Nebraska. 



Grus proavus MARSH. [42.] 



Grus proavus MARSH, Amer. Journ. Sci., ser. 3, IV, 1872, 261. 

 Pleistocene; New Jersey. 



GENUS ALETORNIS MARSH. 



Aletornis MARSH, Amer. Journ. Sci., ser. 3, IV, 1872, 256. Type, by 

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



Alet6mis bSllus MARSH. [48.] 



Aletornis bellus MARSH, Amer. Journ. Sci., ser. 3, IV, 1872, 258. 



Eocene (Bridger); Wyoming. 



Aletornis gracilis MARSH. [47.] 



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



Eocene (Bridger); Wyoming. 



Aletomis ndbilis MARSH. [44.] 



Aletornis nobilis MARSH, Amer. Journ. Sci., ser. 3, IV, 1872, 256. 



Eocene (Bridger); Wyoming. 



