Bulletin - United States National Museum - si-pddr - Smithsonian ...

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