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

268 BULLETIN 133, UNITED STATES NATIONAL MUSEUM
The one taken has the following measurements: Wing, 64.2; tail,
73.3 ; culmen from base, 12.3 ; tarsus, 22.1 mm.
SIPTORNIS STEINBACHI Hartert
Siptornis steinbachi, Hartert, Nov. ZooL, vol. 16, December, 1909, p. 213.
(Cachi, Salta, Argentina, altitude 2,500 meters.)
The skin of a female Siptornis secured March 13, 1921, near the
city of Mendoza, is referred to the present species with some reserva-
tion. The bird under discussion was taken in the same type of
country as that inhabited by the one allotted as S. d. crassirostris
and resembles that bird in general appearance, differing in lack of
a rufous throat patch, in blackish bill, and deeper rufous on wings,
under tail coverts, and flanks. The throat has a faint yellowish
tinge in the center, with obscure blackish tips on the feathers. The
specimen, apparently adult, is in full molt, and has only three rec-
trices, the external ones on the right side. The two outermost are
cinnamon, the third is cinnamon save for a blackish stripe, that
extends along the middle of the distal half of the outer web and
spreads to the shaft at the tip. The skin agrees substantially with
the original diagnosis except for the dusky streaks on the lesser
wing coverts. The specimen has the following measurements:
Wing, 64; tail imperfect; culmen from base, 14.4; tarsus, 22 mm.
These correspond closely to the measurements given by Hartert for
his type, namely, wing, 66 ; culmen, 14 ; and tarsus, 22 mm.
The bird does not seem to have been reported before save from
the type-locality from which no specimens are available for com-
parison.
SIPTORNIS BAERI Berlepsch
Siptornis Meri, Berlepsch, Bull. Brit. Orn. Club, vol. 16, May 28, 1906,
p. 99. (Cosquin, Cordoba.)
Five specimens of this species were taken at Victorica, Pampa,
on the following dates: December 24, 1920, adult male; December
27, immature male ; and December 28, two adult males, one immature
female. The species is easily distinguished from S. sordida, which
it resembles superficially, by its heavier more robust bill and the
darker median rectrices. Skins in juvenal plumage differ from
adults in lighter ventral surface, more indistinct throat patch, and
fine vermiculations of duslcy on breast.
The species inhabits the same type of country as that frequented
by Synallaxis a. albescens, a species quite similar in general appear-
ance. Apparently haeri rears two broods during the season, as
adults taken in December were in breeding condition, while a first
brood was already on the wing.
Victorica marks a slight extension in the previously known range.