28 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I3I 



Anser albifrons (Scopoli) : White-fronted Goose 

 Branta albijrons Scopoli, Annus I, Historico-Naturalis, 1769, p. 69. 



Modern form reported from late Pleistocene : Fossil Lake, Oregon ; 

 Rancho La Brea, Los Angeles, and San Pedro ^^ (Palos Verdes sand), 

 Los Angeles Comity, California. 



Genus CHEN Boie 



Chen Boie, Isis von Oken, vol. 10, Heft 5, 1822, col. 563. Type, by monotypy, 

 Anscr hyperborcus Pallas. 



Chen hyperborea (Pallas) : Snow Goose 



Anscr hyperborcus Pau:-as, Spic. Zool., vol. i, fasc. 6, 1769, p. 25. 



Modern form reported from late Pleistocene : Fossil Lake, Oregon ; 

 Rancho La Brea, Los Angeles, and McKittrick, California.^^ 



Chen rossii (Cassin) : Ross' Goose 



Anser Rossii "Baird," Cassin, Proc. Acad. Nat. Sci. Philadelphia, vol. 13, 

 sign. 5-6, March-April (June 30), 1861, p. 73. 



Modern form reported from late Pleistocene : Fossil Lake, Oregon. 



Chen pressa Wetmore ^3 



Chen pressa Wetmore, Smithsonian Misc. Coll., vol. 87, No. 20, Dec. 27, 1933, 

 p. 9, figs. 5-8. 



Upper Pliocene (Hagerman lake beds) : Near Hagerman, Idaho. 



Subfamily DENDROCYGNINAE: Treeducks 



Genus DENDROCYGNA Svsrainson 



Dcndrocygna Swainson, Class. Birds, vol. 2, July i, 1837, p. 365. Type, by 

 subsequent designation, Anas arcuata Horsfield (Gray, 1840). 



Dendrocygna eversa Wetmore 



Doidrocygna cvcrsa Wetmore, Proc. U. S. Nat. Mus., vol. 64, art. 5, Jan. 

 15, 1924, p. 3, figs. 1-2. 



Upper Pliocene (Blancan) : Near Benson, Arizona. 



3^ Specimen with size of the subspecies frontalis. 



32 Chen caeritlcsccns recorded by Shufeldt, Bull. Amer. Mus. Nat. Hist., 

 vol. 32, July 9, 1913, p. 145, on basis of scapula only, has been dropped. See 

 Howard, Carnegie Inst. Washington Publ. 551, Jan. 25, 1946, p. 166? 



33 Miller, A. H., Univ. California Publ. Zool., vol. 42, No. i, 1937, p. 41, sug- 

 gests that this species may belong in the genus Nesochen. 



