88 Mr. C. H. B. Grant on Birds collected in Ay-yentina, 



h, c, d. $ 9 ad. Los Ynglases, Aju. June 1-8, 1909. 



e, /. $ ad. Riaclio Ancho, N. Argentine. July 31, 1909. 



^. ? ? ad. Arjerichi, Paraguay. Aug. 9, 1909. 



h. ? ad. Villa Oliva, „ Aug. 11, 1909. 



i. $ ad. Santa Rosa, „ Aug. 14, 1909. 



Irides hazel ; bill and upper mandible black, lower pale 

 yellow-brown ; legs and toes brown. 



This is quite the rarest woodland bird in the Ajo district, 

 where it is apparently only a winter visitor, arriving in the 

 autumn and leaving again in the spring. 



I shot one on September 12th, soon after my arrival 

 there in 1908, and more w'ere observed afterwards till March 

 or April of 1909. Miss Runnacles noted them in every 

 month throughout that winter. 



This is a dainty and lively little bird, having much the 

 habits and actions of a Zosterops, while the note is loud and 

 shrill and not unlike the alarm-note of Troglodytes hornensis. 

 It was very plentiful in the woods of the Northern 

 Argentine and Paraguay. 



12. Geothlypis velata. 



Geothlypis velata Sharpe, Cat. B. x. p. 363, pi. ix. fig. 5 ; 

 Arg. Orn. i. p. 20. 



Geothlypis cucullata Richmond, Auk, xvii. p. 179 (1900). 

 a, b. ? ad. Puerto Pinasco, Paraguay. Sept. 17, 1909. 



c. ? ad. Curu^u Chica, „ Oct. 29, 1909. 



d. S ad. Bella Vista, N. Argentine. Nov. 12, 1909. 

 (J . Irides hazel ; bill black, lower mandible fleshy ; legs 



and toes pale brown. 



? . Similar to the male, except that the upper mandible 

 is dark brown. 



13. Basileuterus auricapillus. 



Basileuterus auricapillus Sharpe, Cat. B. x. p. 393 ; Arg. 

 Orn. i. p. 21. 



a. S ad. Riacho Ancho, N. Argentine. July 31, 1909 

 Irides hazel ; bill brown ; legs and toes amber-yellow. 



