274 



Proposed Changes in the A. 0. U. Check-List. 



rAuk 

 lApril 



Male, 1786. Coll. Wharton Huber, Mesilla Dam, three miles south- 

 west of Mesilla, New Mexico, April 12, 1915; length, 541 mm.; wing 275; 

 tail, 92; exposed culmen, 57; tarsus, 47. 



Male, Belen, New Mexico, December 9, 1917. Collected by Aldo Leo- 

 pold; length, 550 mm.; wing, 278; tail, 89; exposed culmen, 51; tarsus, 

 48. 



Measurements of three specimens (skins) including the type in mm. 



Type No. 1928 — Adult Male. Along Rio Grande River, west 

 of Las Cruces, New Mexico, May 7, 1915. Coll. by Whar- 

 ton Huber 



No. 1786 — Male. Mesilla Dam, 3 miles s. w. of Mesilla, 

 Dona Ana Co., New Mexico, April 12, 1915. Coll. by 

 Wharton Huber 



Male. Belen, New Mexico, Dec. 9, 1917. 

 Leopold 



Coll. by Aldo 



*The names of the color used are from Ridgway's "Color Standards and Co'or 

 Nomenclature." 



Habitat: The Rio Grande Valley of New Mexico from Albuquerque 

 south to El Paso, Texas. 



225 St. Mark's Square, Philadelphia, Pa. 



FIFTH ANNUAL LIST OF PROPOSED CHANGES IN THE 

 A. O. U. CHECK-LIST OF NORTH AMERICAN BIRDS. 



BY HARRY C. OBERHOLSER. 



This is the Fifth Annual List of Proposed A. O. U. Cbeck-List 

 additions and changes in the names of North American birds. 

 Like the First, Second, Third, and Fourth, 1 the present list com- 

 prises only ornithological cases — i. e., such as require specimens 

 or the identification of descriptions for their determination — 

 and consists of additions, eliminations, rejections, and changes of 

 names due to various causes. However, only changes known to 

 be the result of revisionary work are included; therefore no men- 

 tion is here made of changes involved in names in local lists or 



i For the four previous lists, see The Auk, XXXIII, October, 1916, pp. 425-431 ; 

 XXXIV, April, 1917, pp. 198-205; XXXV, April, 1918, pp. 200-217; XXXVI. 

 April, 1919, pp. 266-273. The A. O. U. Committee has not as yet acted on any 

 of these cases. 



