TYPE SPECIMENS OF BIRDS 43 



Aster [sic] bifasciatus Peale 



U.S. Exploring Expedition 8 (Mamm. and Orn.) : 70, "pi. XX," 1848. 

 =Accipiter virgatus gularis (Temminck and Schlegel). See Deignan, 



U.S. Nat. Mus. Bull. 186: 65, 1945. 

 13854. Immature (sex not indicated). Singapore Island, Malaya. Origi- 

 nal number 24, fide register, or 25, fide exhibition label. U.S. Explor- 

 ing Expedition (1838-1842). 

 Peale referred to "our specimens," but Cassin's MS. list gives only one, 

 and there is but one entry in the museum register. 



The old exhibition label identifies the specimen with "Accipiter badius 

 (Gm.) Strickl.," and Chasen, so informed by Mathews, has misused Peale's 

 name for Micronisus poliopsis Hume (see Birds of the Malay Peninsula 

 4:25, 1939). 



Genus BUTEO Lacepede 



Buteo exsul Salvin 



Ibis (3) 5:371, July 1875. 

 =Buteo polyosoma exsul Salvin. See Peters, Checklist of birds of the 



world 1:230, 1931. 

 71044. Adult (sex not indicated). Mas-afuera Island (lat. 33°46' S., 

 long. 80°46' W.), Juan Fernandez Islands, southern Pacific Ocean off 

 central Chile. Entered into the museum register on February 22, 1877. 

 Collected by an agent of Federico Leybold. Received from Osbert 

 Salvin. 

 Salvin {op. cit., p. 370) stated that Charles Barclay brought the collection 

 from Chile, and that it was placed in his hands for determination by Hanbury 

 Barclay, Charles's brother. 



The description of this buzzard was based upon an undisclosed number 

 of cotypes, with both sexes represented; the remainder of the series are 

 perhaps now in the British Museum. Our No. 71045, an immature female, 

 must be considered merely a paratype. 

 [Buteo borealis] var. lucasanus Ridgway 



in Baird, Brewer, and Ridgway, History of North American birds (land 

 birds) 3: 258 (in key), 285, January 1874. 

 =Buteo jamaicensis calurus Cassin. See Brewster, Bull. Mus. Comp. 



Zool. 41: 84-85, 1902; Friedmann (ms.). 

 16925. Adult male (not "female?"), fide exhibition label and Xantus's 

 field catalog. Cape San Lucas, State of Baja California, Mexico. 

 September 15, 1859. Collected by John Xantus. Original number 

 2194. 

 How much the concept of the type specimen has changed is shown by the 

 fact that Brewster {op. cit., p. 84) observed that No. 16925 is the specimen 

 from which Ridgway's description was taken, but in the same paragraph 

 (and again on p. 86) stated that No. 17212 is the type. 



