180 BULLETIN 133, UNITED STATES NATIONAL MUSEUM 



from these notes that two broods are reared each season, while in 

 some localities three may be produced. 



These pigeons were recorded at the following points: Buenos 

 Aires city, June, October, and January, in the Plaza San Martin; 

 Resistencia and Las Palmas, Chaco, July, 1920 ; Riacho Pilaga, For- 

 mosa, August 7 to 21 (male taken August 7) ; Formosa, Formosa, 

 August 23 and 24; Puerto Pinasco, Paraguay, from the Rio Para- 

 gTiay west for 200 kilometers, September 3 to 25 (male taken at 

 Kilometer 80, September 17) ; Lavalle, Buenos Aires, November 2, 

 9, and 13; Bahia Blanca, Buenos Aires, December 14 (one in the 

 main plaza) ; Carhue, Buenos Aires, December 15 to 18 (female shot 

 December 17) ; Victorica, Pampa, December 23 to 29; Carrasco, near 

 Montevideo, Uruguay, January 9 and 16, 1921; La Paloma, Uruguay, 

 January 23; San Vicente, Uruguay, January 25 to February 2; 

 Lazcano, Uruguay, February 3 to 8 ; Rio Negro, Uruguay, February 

 14 to 19 (male and set of eggs taken February 19) ; Guamini, Buenos 

 Aires, March 6 and 8; Mendoza, Mendoza, March 13; Potrerillos, 

 Mendoza, March 17 and 19; Tunuyan, Mendoza, March 22 to 28 

 (three males taken March 24) ; Tapia, Tucuman, April 7 to 13. 



A male taken September 17 had the maxilla and tip of mandible 

 dusky neutral gray ; base of mandible olive buff ; iris Payne's gray, 

 with paler margin ; bare skin about eye storm gray ; tarsus and toes 

 dull Indian purple; claws blackish. 



ZENAIDA AURICULATii AURICULATA (Des Murs) 



Peristera auriculata Des Murs in Gay, Hist. Fis. Pol., Chile, ZooL, vol. 1, 

 1847, p. 381. (Central provinces of Chile.) 



Study of a considerable series of Zenaida auriculata shows the 

 validity of the well-marked form described by Bangs and Noble ^^ 

 from Huancabamba, Peru, as Z. a. pallens (marked by smaller size 

 and darker posterior underparts), but does not reveal other forms 

 that may be recognized at present. There is a tendency for birds 

 from Buenos Aires and Mendoza southward to be larger than speci- 

 mens from Uruguay and Paraguay northward to Colombia, while 

 specimens from Neuquen and Mendoza, at the base of the Ancles, 

 are slightly grayer as well as larger. The species is one in wliich 

 there is considerable change in color as specimens age, while meas- 

 urements at times seem contradictory to the statements made above. 

 Chilian examples at hand are insufficient to establish the characters 

 of the typical form, so that I do not care to attempt any further 

 subdivision. It may be remarked that specimens of -pollens from 

 Pisac, Chospiyoc, the Tomba Valley, and Lima, Peru, are browner 

 above than true auHcuIata^ rather than paler and grayer as stated 

 in the original description. Otherwise the diagnosis is correct in 



^5 Auk, ISIIS, p. 440. 



