BIRDS OF ARGENTINA, PARAGUAY, URUGUAY, AND CHILE 325 

 SPIZITORNIS PARULUS LIPPUS Wetmore. 



Spizitoriiis parulus Jippus Wetjioee. Univ. California Publ. Zo?5l.. vol. 21, 

 1923, p. 336. (Mayne Harbor, Evans Island, Owens Islands, Chile.) 



Similar to parulus but darker above, black of head duller, and 

 breast more abundantly streaked. 

 Straits of Magellan. 



SPIZITORNIS PARULUS PATAGONICUS Hellmayr 



Spisitornis parulus patagonicus, Hellmayr Arch, fiir Naturg., voL 85, 

 November, 1920, p. 51. (Neiiquen, Gobernacion de Neuquen, Argen- 

 tina.) 



Two adult males secured at General Koca, Rio Negro, November 

 29 and December 3, 1920, have the underparts white, rather heavily 

 streaked, two well-marked white wing bars, and the dorsal surface 

 gray and may be considered typical of this form since they were 

 taken only a short distance east of the type locality. 



Near Koca this bird often was found in low bushes in the same 

 areas that were occupied by A. flavirostHs. However, on December 

 3, 1 encountered 'patagonicus among growths of Atriplex and similar 

 shrubs on the low flats near the Rio Negro, where flavirosfris was 

 not seen, so that when the birds are settled for the summer at their 

 breeding stations, the two species may affect different ecological 

 associations. The two were similar in actions but had slightly dif- 

 ferent notes and were easily distinguished by color. 



A male, shot November 29, had the bill black; inside of mouth 

 zinc orange; iris pale olive bluff save for a purplish area that cov- 

 ered a segment on the upper side ; tarsus black. 



TACHURIS RUBRIGASTRA RUBRIGASTRA (Vieillot) 



Sylvia ruhrigrastra Vieillot, Nouv. Diet. Hist. Nat., vol. 11, 1817, p. 277. 

 (Paraguay and Buenos Aires.) 



Four specimens of this bright-colored marsh flycatcher include 

 an adult male from Dolores, Buenos Aires, October 21, 1920, a male 

 and a female from Tunuyan, Mendoza, March 26, 1921, and a female 

 from Concon, Chile, April 29. Comparison of a series of 19 skins 

 from Buenos Aires, Rio Negro, Mendoza, and Chile, indicates that 

 birds from the southern part of the range of the species do not differ 

 sectionally in spite of the wide range included. The two skins from 

 Tunuyan and the one from Concon are immature individuals in 

 first winter plumage, distinguished from older individuals by a 

 yellow spot on the rump. 



True to their reputation these handsome mites of the feathered 

 world were found among rushes in marshes, usually where the water 

 was something less than a meter in depth. They were local in oc- 



54207—26 22 



