104 Ml. C. H. B. Grant on Birds collected in Argentina, 



This is the commonest of the three Cow-birds found in 

 the Ajo district^ and during the winter months congregates 

 in flocks in company with A. holosericens, and does con- 

 siderable damage to the maize. It was also observed in 

 several localities in the Argentine and Paraguay during the 

 river expedition. 



Its parasitical habits have been well described by Hudson 

 and need no further additions. 



56. MOLOTHRUS RUFOAXILLARIS. 



Molothrns rufoaxillaris Scl. Cat. B. xi. p. 338 ; Arg. Orn. 

 i. p. 86. pi. vi. fig. 2. 



a. ^ ad. Los Ynglases, Ajo. Sept. 12, 1908. 

 Iris hazel ; bill, legs, and toes black. 



b. S ad. Los Yuglases, Ajo. Nov. 17, 1908. 



c. c^ juv. „ „ March 23, 1909. 

 </, e. (^ ? ad. „ „ April 28, 1909. 

 /. S ad. „ „ Jan. 7, 1910. 



This is the least common of the three Cow-birds found at 

 Ajo, and consorts with the flocks of M. bonariensis. 



It can be distinguished from the male of that species by 

 its duller appearance and different cry. Eggs presumably 

 of this species were taken in the nests of Pseudoleistes 

 virescens and 31. badius. 



57. MoLOTHRUS BADIUS. 



Molothrns badius Scl. Cat. B. xi. p. 338; Arg. Orn. i. 

 p 95. 



a. ? ad. Los Ynglases, Ajo. Oct. 29, 1908. 



b. S juv. „ „ Nov. 17, 1908. 



c. S juv. „ „ Dec. 9, 1908. 



</, e. (^ ? juv. Luiconia, Ajo. Dec. 29, 1908. 

 /. ? juv. Los Ynglases, Ajo. Jan. 25, 1909. 

 (7. ? ad. „ „ March 10, 1909. 



A, i, k, /. (J ad. et iram. Los Ynglases, Ajo. May, 1909. 

 m. ? ad. Riacho Ancho, N. Argentine. Aug. 1, 1909. 

 n. 9 ad.; o. S imm. Villa Mortero, Paraguay. Aug. 13, 

 1909. 

 p. ? ad. Goya, N. Argentine. Nov. 13, 1909. 



