88 Third Supplrmoit to the A. O. U. Check- List. [ janmuy 



II. ELIMINATIONS. 

 435. Trochilus heloisa (Less. & DeLatt.). 



Heloise's Hummingbird. 



This species was introduced into the North American fauna on 

 the basis of an immature specimen of Trochilus calliope Gould, 

 wrongly identified as T. heloisa. {Cf. Ridgwav, AnU, VIII, 

 Jan. 1S91, 115.) 



III. CHANGES OF NOMENCLATURE. 



338. Buteo harlani (AuD.). This becomes 

 337 d. Buteo borealis harlani (AuD.). 



{Cf. RiDGWAY, Auk, VII, April, 1890, p. 205.) 



[361.] Falco sparverioides ViG. This becomes 



Falco dominicensis Gm. 



Falco domifiicensis Gm. Syst. Nat. I, 17SS, 28S. 

 {Cf. RiDGWAY, Auk, VIII, Jan. 1891, 113.) 



4. Xema (Creagrus) furcata (Ner.). (Hypotlietical List, 

 p. 350.) This becomes Creagrus furcatus (Nhu.), Creagr7is 

 being raised to generic rank. {Cf. Ridgway, Pr. U.S. Nat. 

 Mus. XII, 18S9, 117.) Hence: 



Genus CREAGRUS Bon. 



Creagrus Bon. Naumannia, 1854, 211. Type, Larus fur- 

 catus Neboux. 



4. Creagrus furcatus (Neb.). 



Larus furcatus Neb. Voy. 'Venus,' Atlas, pi. 10 (1S46). 

 Creagrus furcatus Bon. Naumannia, 1854, -^^S- 



IV. FORMS CONSIDERED AS NOT ENTITLED TO 

 RECOGNITION. 



Melanerpes formicivorus aciileatiis Mearns, Auk, VII, 

 July, 1890, 249. 



