360 BULLETIN 133, UNITED STATES NATIONAL MUSEUM 



This handsome gnatcatcher was found in thorny trees at the 

 border of forest, in semiopen scrub, and lowland thickets or, at the 

 Estancia Los Yngleses, near Lavalle, Buenos Aires, in groves of 

 tala {Celtis tola). The birds hopped jauntily about among the 

 branches with drooping wings and elevated tail, in a manner similar 

 to other Polioptila^ but the songs and call notes, as loud as those 

 of a small warbler, were surprisingly strong for a bird of this 

 group. The ordinary scolding note resembled zhree or pree-ee or 

 a low chit-it. The usual song, given in a melodious tone, was 

 whit see wheety wheety wheety or tee tee tee tee wheety wheety 

 wheety. Occasionally they indulged in a more varied warble. They 

 were found at times in mixed flocks with other small brush birds. 



An adult male taken on October 27, near Lavalle, was in breeding 

 condition, and an immature female was secured at Lazcano, Febru- 

 ary 6. The birds were encountered in pairs throughout the year, 

 and remained attentively near one another at all times. In the 

 autumn month of April, near Tapia, Tucuman, young males of the 

 year were in full song and were active and demonstrative toward 

 the females, so that pairing seemed to be in progress, though the 

 nesting season was several months in the future. The case is anala- 

 gous to that of Thr'^yothorus ludovicianus and Sitta caroUnensis, 

 where young birds pair in their first fall and remain mated through 

 the winter. 



Family MOTACILLIDAE 



ANTHUS FURCATUS FURCATUS d'Orbigny and Lafrcsnaye 



Anthus furcaius d'ORBioNY and Lafresnaye, Mag. Zool., 1837. cl. 2, p. 27. 

 (Near Carmen, on the Rio Negro, Patagonia.)^ 



A series of 16 skins of this pipit afford the following distribu- 

 tional data: Rio Negro, L^^ruguay, February 21, 1921, immature 

 male; Baiiado de la India Muerta, 12 miles south of Lazcano, Uru- 

 guay, February 3, three males, two females, adult and immature; 

 San Vicente, Uruguay, January 31, adult male ; Berazategui, Buenos 

 Aires, June 29, 1920, female immature; 15 miles south of Cape San 

 Antonio, Buenos Aires, November 6, adult female; Carhue, Buenos 

 Aires, December 15 to 17, two adult and one young male, three adult 

 females; Victorica Pampa, December 26, adult male. In addition 

 I have examined a male taken September 27, 1919, by E. G. Holt at 

 Rio Grande, Rio Grande do Sul, Brazil, and two males and two 

 females shot near Bahia Blanca, Buenos Aires, by S. A. Adams, 

 from October 31 to November 9, 1903. These records in part some- 

 what extend the boundaries of the range assigned by Hellmayr.^^ 



55 See Hellmayr, El Hornero, vol. 2, Aug. 2, 1921, p. 181. 

 50 El Hornero, vol. 2, Aug. 2, 1921, pp. 181-182. 



