370 BULLETIN 133, UNITED STATES NATIONAL MUSEUM 



One taken July 9 had the bill blackish slate ; tarsus and toes honey 

 yellow ; iris very dark brown. 



BASILEUTERUS FLAVEOLUS (Baird) 



Myiothlypis flavcolus Baird, Rev. Amer. Birds, May, 1865, p. 252. (Para- 

 guay. ) 



This warbler was found only in the region west of Puerto Pinasco, 

 Paraguay, where it was seen September 1, 1920, near Kilometer 25, 

 and September 9 to 20, near Kilometer 80. Adult males, taken 

 September 1 and 10, were preserved as skins. The species ranged in 

 pairs in dense forest growth, feeding on or near the ground. The 

 birds Avere shy but were occasionally seen walking or hopping about 

 with constantly jerking tail. Males sang a sweet, warbling song, 

 and the call note w^as a sharp chip. 



MYIOBORUS BRUNNICEPS (d'Orbigny and Lafresnaye) 



Setophar/a irunniceps (I'Orbigny and Lafresnaye, Mag. Zool.. 1837, p. 50. 

 (Yungas, Bolivia.) 



On* April 17, 1921, the handsome brown-capped redstart was com- 

 mon on the slopes of the Sierra San Xavier above Tafi Viejo, Tucu- 

 man, between 1,800 and 2,100 meters, where it ranged in thickets 

 of low, rather dense undergrowth scattered over rolling slopes above 

 the forest, or occasionally came into more open areas among the 

 groves of tree alders. The birds, alert and active in every move- 

 ment, flew from perch to perch with a flirt of the tail that dis- 

 played the prominent white of the outer feathers. 



The specimen preserved is an immature male in fresh fall plumage. 



GEOTHLYPIS AEQUINOCTIALIS VELATA (Vieillot) 



Sylvia velata Vieillot, Hist. Nat. Ois. Amer. Sept., vol. 2, 1807, p. 22, pi. 

 74. (No locality. " De la collection de M. Dufresne.") 



The present yellowthroat was so local in its distribution and so 

 sedentary that it was probably overlooked in many localities. It was 

 recorded as follows: Las Palmas, Chaco, July 20, 22 (adult male 

 taken), and 28 (male and female shot); Riacho Pilaga, Formosa, 

 August 9 and 17 (a male taken on each of the dates mentioned) ; 

 Formosa, Formosa, August 24 (immature male seciu-ed) ; Lazcano, 

 Uruguay, February 5 (immature male) ; Rio Negro, Uruguay, Feb- 

 ruary 17 (immature female) and 18 (immature female, adult male) ; 

 Tapia, Tucuman, April 11 and 12 (adult females on the two dates 

 given). Immature birds are somewhat browner than others, while 

 adults shot in winter are more richly colored than those secured in 

 summer. Immature birds were common in February, and adults 

 taken in Uruguay in February and in Tucuman in April were in full 



