BIRDS OF ARGENTINA, PARAGUAY, URUGUAY, AND CHILE 413 



Uruguay, are distinctly intermediate, as they show a tendency to- 

 ward a narrower median crown stripe and darker, more rufescent 

 dorsal surface. They may, however, be placed without difficulty 

 with argentina. Specimens that I have examined from INIontevideo 

 are similar to argentina from northern Buenos Aires, while one from 

 Quinta, a few miles from the town of Rio Grande do Sul, Brazil 

 (collected by E. G. Holt), is representative of capensis. The skins 

 from San Vi»^ente thus are connecting intermediates between the two 

 forms. 



In the following table are given pertinent measurements, in milli- 

 meters, of the series taken of the present form. 



Cata- 

 logue 

 No. 



2S4123 



284135 

 284122 

 284138 

 284133 

 284129 

 284144 

 284131 

 284134 

 284145 

 284145 

 284127 

 284139 



284137 

 284140 

 284126 

 284 124 

 284132 

 284142 

 284147 



Sex 



Locality 



Male Berazategui, Buenos Aires 



...do I Lavalle, Buenos Aires 



..do \ do... 



..do i Carhue, Buenos Aires 



...do I do... 



..do Ingeniero White, Buenos Aires. 



..do : do.. 



..do 1 do 



..do j Resistencia, Chaco 



..do I Las Palmas, Chaco 



...do ' San Vicente, Uruguay. 



.-do do 



Average for 13 specimens. 



Female... Lavalle, Buenos Aires. 



...do do. 



...do do 



...do Victorica, Pampa 



...do Resistencia, Chaco 



...do oan Vicente, Uruguay. 



...do ! do 



Average for 7 specimens. 



Date 



June 29,1920 

 Oct. 23,1920 



do.. 



Dec. 15,1920 



do 



Dec. 17,1920 

 Dec. 13,1920 



-do. 



do. 



July 8, 1920 

 July lb, 1920 

 Jan. 25, 1920 

 Jan. 31,1920 



Wing 



Mm. 

 70.0 

 72.2 

 08.5 

 (j9. 5 

 71.2 

 69.0 

 73.5 

 71.0 

 69.0 

 71.5 

 7u. 

 73.0 

 72.5 



Oct. 23,1920 

 Oct. 30,1920 

 Nov. 1, 1920 

 Dec. 23,1920 

 July 9, 1920 

 Jan. 29,1920 

 do 



70. 



66.2 

 66.0 

 65.0 

 70.0 

 68.5 

 67.0 

 09.1 



67.4 



Tail 



Mm. 

 59.5 

 60.5 

 57.5 

 56.7 

 60.1 

 56.5 

 59.2 

 60.5 

 67.0 

 61.5 

 61.0 

 64.0 

 60.2 



59.6 



57.6 

 53.5 

 53.0 

 57.6 

 55.5 

 59.5 

 67.5 



Culmen 



Mm. 

 11.5 

 12.5 

 11.3 

 12.5 

 11.7 

 11.5 

 11.7 

 11.7 

 12.5 

 11.7 

 12.5 

 12.4 

 12.7 



56.3 



12.0 



12.0 

 13.0 

 12.6 

 11.7 

 13.1 

 12.6 

 12.4 



12.6 



Tarsus 



Mm. 



22.1 

 23.0 

 21.5 

 20.2 

 21.0 

 22.2 

 20.5 

 20.0 

 23.0 

 20.7 

 22.1 

 22.5 

 23.0 



21.7 



22.1 

 22.0 

 22.1 

 20.5 

 21.0 

 20.6 

 21.0 



21.3 



Birds of this subspecies were recorded in my notes as folloAvs 

 (where not represented by specimens these records are allocated on 

 the basis of pi'obability) : Berazategui, Buenos Aires, June 29, 1920; 

 Resistencia, Chaco, July 9 to 10; Las Palmas, Chaco, July 13 to 

 August 1 ; Formosa, Formosa, August 23 and 24 (possibly B. c. 

 inellea., as no specimens were taken) ; Dolores, Buenos Aires, October 

 21; Lavalle, Buenos Aires, October 23 to November 15; Ingeniero 

 White, Buenos Aires, December 13 ; Bahia Blanca, Buenos Aires, 

 December 14; Carhue, Buenos Aires, December 15 to 19; Victorica, 

 Pampa, December 23 to 30; Montevideo, Uruguay, January 9 and 

 14, 1921; Carrasco, Uruguay, January 16; La Paloma, Rocha, Uru- 

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

 2; Lazcano, Uruguay, February 3 to 9; Guamini, Buenos Aires, 

 March 3 to 8. 



54207—26 27 



