94 U.S. NATIONAL MUSEUM BULLETIN 221 



Larus nelson! Henshaw 



Aukl (3): 250, July 1884. 

 =Larus hyperboreus Gunnerus'X- Larus argentatus vegae Palmen. See 



Dwight, Bull. Amer. Mus. Nat. Hist. 52: 249-250, 1925. 

 97253. Adult male. Saint Michael (on the southern shore of Norton 



Sound), western Alaska. June 20, 1880. Collected by Edward W. 



Nelson. Original number 1787. 



Genus RISSA Stephens 



[Larus (Rissa) ] breviroslris "Brandt" Bruch 

 Journ. fur Orn. 1 : 103, 1853. 

 =Rissa breviroslris (Bruch). See Dwight, Bull. Amer. Mus. Nat. Hist. 



52: 322, 1925. 

 60160. Adult (sex not indicated). "Northern Seas." Entered into the 

 museum register on October 14, 1870. Collected by Ferdinand P. von 

 Wrangel. Received from the Imperial Museum of Saint Petersburg, 

 through J. F. Brandt. 

 The name breviroslris of Bruch was derived from a nomen nudum of 

 Brandt. This specimen, acquired from Brandt, bears on the oldest label, 

 in Brandt's hand, "Larus breviroslris nob." and also the underlined word 

 "Wrangel." 



Genus HYDROPROGNE Kaup 



Thalasseus imperator Cones 



Proc. Acad. Nat. Sci. Philadelphia for 1862, p. 358 (not earlier than 

 December 30), 1862=1863. 



=Hydroprogne tschegrava tschegrava (Lepechin). See Peters, Check- 

 list of birds of the world 2: 331, footnote, 1934. 



20189. Adult male. Fort Resolution, Great Slave Lake, District of 

 Mackenzie, Northwest Territories, Canada. June 5, 1860. Collected 

 by Robert W. Kennicott. Original number 610. 



The fragmentary original label, now enclosed in an envelope attached to 

 the bird's left tarsus, bears the word "Type" in Coues's hand. 



Genus STERNA Linnaeus 



Sterna antarctica Peale 



U.S. Exploring Expedition 8 (Mamm. and Orn.) : 280, "pi. Lxxv, fig. 1," 



1848. 

 Sterna meridionalis Cassin 



U.S. Exploring Expedition 8 (Mamm. and Orn.) : 385, 1858. 

 Sterna cassinii Sclater 



Proc. Zool. Soc. London 28 (3) : 391, March 1861. 

 ■=Slerna hirundinacea Lesson. See Saunders, Catalogue of the Birds in 



the British Museum 25 : 52, 53, 1896. 



