TYPE SPECIMENS OF BIRDS 47 



89127. Immature female. Bering Island, Commander Islands, south- 

 western Bering Sea. May 15, 1882. Collected by Leonhard H. 

 Stejneger. Original number 1055. 

 Long and careful study by the museum ornithologists has disclosed no 

 character at all by which this specimen can be certainly allocated between 

 H, a. albicilla and H. leucocephalus alascanus Townsend! Since the name 

 hypoleucus Ridgway, 1883, has priority over alascanus Townsend, 1897, the 

 former should be arbitrarily placed in synonymy with albicilla Linnaeus, 

 1758. 



Haliaetus leucocephalus alascanus C. H. Townsend 

 Proc. Biol. Soc. Washington 11: 145, June 9, 1897. 

 =Haliaeetus leucocephalus alascanus Townsend. See A.O.U. Committee 



on Classification and Nomenclature, Auk 72 : 293, 1955. 

 151567. Adult male. Unalaska Island, Aleutian Islands, Bering Sea. 

 June (not May) 22, 1895. Collected by Charles H. Townsend. Re- 

 ceived from the U.S. Fish Commission. 



Genus CIRCUS Lacepede 



Circus approximans Peale 



U.S. Exploring Expedition 8 (Mamm. and Om.) : 64, "pi. xviii" (="pl. 

 xvn"?), 1848. 

 =Circus approximans approximans Peale. See Peters, Checklist of birds 



oftheworld 1:267, 1931. 

 13841. Immature (sex not indicated). Muthuata Town, Vanua Levu 

 Island, Fiji Islands, Oceania. June 21, 1840. Original number 12. 

 U.S. Exploring Expedition (1838-1842). 



Genus SPILORNIS G. R. Gray 



Spilornis bassus baweanus Oberholser 



Proc. U.S. Nat. Mus. 52 : 185, February 8, 1917. 



=Spilornis cheela baweanus Oberholser. See Chasen, Handlist of Ma- 

 laysian birds, p. 75, 1935. 



181446. Adult female. Bawean Island, Java Sea, Indonesia. November 

 25, 1907. Collected by William L. Abbott. 

 Spilornis cheela richniondi Kirke Swann 

 Synopsis of the Accipitres, ed. 2, p. 135, 1922. 



181625. Adult (sex not indicated). Kendawangan River, Matan Sub- 

 division, southwestern Borneo. July 1-September 9, 1908. Collected 

 by William L. Abbott. 

 Spilornis klossi Richmond 



Proc. U.S. Nat. Mus. 25 : 304, September 17, 1902. 



=Spilornis cheela klossi Richmond. See Meise, Journ. fiir Orn. 87: 71, 

 1939. 



