1920 J Proposed Changes in the A. 0. U. Check-List. — i ( 



Onychoprion fuscatus (Linnaeus) becomes Sterna fuscata Linnaeus, 

 because not generically separable. {Cf. Ridgway, Bull. U. S. Nat. 

 Mus., No. 50, VIII, June 26, 1919, p. 514.) 



Melanosterna anaetheta recognita Mathews becomes Sterna anae- 

 theta recognita (Mathews), because not generically separable from 

 Sterna. (Cf. Ridgway, Bull. U. S. Nat. Mus., No. 50, VIII, June 26, 

 1919, pp. 486, 512.) 



Leptophaethon catesbyi (Brandt) becomes Leptophaethon lepturus 

 catesbyi (Brandt), because found to be only subspecifically distinct. 

 (Cf. Oberholser, The Auk, XXXVI, No. 4, October, 1919, p. 556.) 



Scaeophaethon rubricaudus (Boddaert) becomes Scaeophaethon 

 rubricaudus rothschildi (Mathews), so far as North America is 

 concerned. (Cf. Oberholser, The Auk, XXXVI, No. 4, October, 

 1919, p. 557.) 



Parasula Mathews is considered to be only a subgenus. (Cf. Wetmore, 

 Bull. Mus. Comp. Zool., LXIII, No. 4, August, 1919, p. 168.) 



Piscatrix Reichenbach is considered to be only a subgenus. (Cf. Wet- 

 more, Bull. Mus. Comp. Zool., LXIII, No. 4, August, 1919, p. 168). 



Mergus americanus Cassin becomes Mergus merganser americanus 

 Cassin, because but subspecifically different from Mergus americanus. 

 (Cf. Millais, British Diving Ducks, II, 1913, p. 89.) 

 fAnas platyrhyncha conboschas Brehm. Anas co?iboschas Brehm, 

 Naturg. Handb. Vogel Deutschl., 1831, p. 865 (Greenland). Recog- 

 nized as a subspecies. (Cf. Hartert, Novit. Zool., XXV, No. 1, 

 May 1, 1918, p. 47.) Range: Greenland. 

 tQuerquedula discors albinucha Kennard. New subspecies. Ken- 

 nard, The Auk, XXXVI, No. 4, October 1919, p. 459 (Grand Chenier, 

 Cameron Parish, Louisiana). Range: Breeds in Louisiana; occurs 

 east to Florida and west to Arizona; in winter south to Mexico, 

 Costa Rica, and West Indies. 

 tEunetta falcata (Georgi). Anas falcata Georgi, Reise Russ. Reichs, 

 I, 1775, p. 167 (Baikal region, Siberia). Recorded as North American 

 from a specimen taken on the Pribilof Islands, Alaska. (Cf. Hanna, 

 Journ. Wash. Acad. Sci., IX, No. 6, March 19, 1919, p. 176.) 



Marila americana (Eyton) becomes Marila ferina americana (Ey- 

 ton), because considered only subspecifically different. (Cf. Millais, 

 British Diving Ducks, I, 1913, p. 14.) 



Marila afnnis (Eyton) becomes Marila marila affinis (Eyton), be- 

 cause regarded only subspecifically different from Marila marila. 

 (Cf. Millais, British Diving Ducks, II, 1913, p. 68.) 

 fSomateria mollissima islandica Brehm. Somateria islandica Brehm, 

 Isis, 1830, col. 998. Recorded from northeastern Greenland. (Cf. 

 Millais, British Diving Ducks, II, 1913, p. 3.) 



Somateria v-nigra Gray becomes Somateria mollissima v-nigra 

 Gray, because found to intergrade with some of the forms of Somateria 

 mollissima. (Cf. Millais, British Diving Ducks, II, 1913, p. 4.) 



