N.W. Argentina and the Bolivian Chaco. 465 



7-31. Cairina moschata (Linn.). 



Two young birds obtained at Tatarenda. Iris brown. 



32. Nettion brasiliense (Gm.). 

 Tatarenda, March 29th, 1902. 



33. Nettion torquatum (Vieillot). 

 Tatarenda, March 19th and April 1902. 



Some uncertainty seems to have prevailed as to whether 

 this bird belonged to the Bolivian fauna or not. 



-f 34. Nomonyx uominicus (Linn.). 



Only one specimen observed, at Tatarenda, in April 1902. 



-/-35. Geranospizias cerulescens (Vieill.). 

 Iris brownish yellow. Tatarenda, March 30th, 1902. 



-f- 36. Micrastur semitorquatus (Vieill.) . 



A young bird, which quite agrees with the description in 

 the Cat. of Birds, was shot at Tatarenda on the 21th of 

 March, 1902. 



37. Urubitinga unicincta (Temm.). 

 Colonia Crevaux, April 1902. 



38. Accipiter pileatus (Temm.). 



A young bird from Tatarenda, March 1902. 



39. Buteo erythronotus (King). 



An adult, but not very old female, was shot at Tatarenda 

 in March 1902. 



-/-40. Heterospizias meridionalis (Lath.). 



An adult specimen was shot at Tatarenda on March 21st, 

 1902. The species is stated to be common. 



41. Asturina pucherani Verr. 



Iris brown in a young specimen, yellow in an adult. 

 Both were shot at Tatarenda in March 1902. 



A third (young) specimen was shot at Aguairenda. 



I". 1 . Gampsonyx swainsoni (Vigors). 

 Colonia Crevaux, April 1902. Iris reddish yellow. 



43. TlNNUNCULUS CINNAMOMIMU3 (Swains.) . 



An adult male from Tatarenda, April 1902. 



