observed in the Gran Chaco. 227 



of the River Pai'aguay. The notes of this bird are very 

 characteristic. 

 W., Nov. 1896. 



46. PiCOLAPTES ANGUSTIROSTRIS (ViciU.). 



Villa Concepcion, Oct, 1896. Very common in monte on 

 western bank of the river. 



W., Nov. 1896. Very common. 



47. XiPHOHHYNCHUS LAFRESN AYANUS (D'Orb.). 



Lengua, Yatebithye. 

 VV., Nov. 2. 



Fam. XIII. F o R. M I c A R 1 1 D .E. 



48. Thamnophilus major, Vieill. 

 Lengua, Scilu. 



W., Jan. 16, 1897. In monte; common. 



The " song " is very characteristic — a series of sharp notes 

 in falling inflexion, becoming more and more rapidly 

 repeated till they pass into a trill, and ending up with a 

 cry somewhat like that of a cat. 



49. Thamnophilus radiatus (Vieill.). 



Villa Concepcion, Oct. 1896. Amongst brush on island 

 opposite the town. 



50. Formicivora strigilata (Max.) ; Scl. B. M. C. B. 

 XV. p. 251. 



Lengua, Keyuk. 



W., Feb. 2, 1897, ? . Amongst low bushes in monte. 



The Lenguas believe that the cry of this bird sets their 

 shelters and blankets on fire. 



[This fine Ant-Tlirush has not been previously recorded 

 so far south. Mr. Kerr brought home a single female 

 specimen. — P. L. S.] 



Fam. XIV. Caprimulgid^. 



51. PODAGER NACUNDA (Vieill.). 



W., Dec. 10, Dec. 25, Jan. 11. Frequent in small flocks 

 of five or six individuals. During the day they lie close on 



q2 



