•84 Mr. C. H. B. Grant ow Buds collected in Argentina, 



The nest is placed in a bnsli or low tree, often in a very 

 exposed situation ; it is composed of thorny twigs and lined 

 "with rootlets and hair. 



4. MiMUS TRIURUS. 



Mimus triurus Sharpe, Cat. B. vi. p. 342 ; Arg. Orn. i. 

 >p. 8, pi. i. 



a. ^ ad. Monte Alto, Paraguay. Aug. 25, 1909. 



b. (^ ad. Colonia Risso, „ Sept. 8, 1909. 

 Irides olive-green ; bill blackish liorn-coloured, pearly at 



base of lower mandible; legs and toes dull black. 



5. POLIOPTILA DUMICOLA. 



Polioptila dumicola Sharpe, Cat. B. x. p. 444; Arg. Orn. 

 i. p. 12. 



a. ? ad. Los Ynglases, Ajo. Sept. 27, 1908. 



h. S ad. „ „ Oct. 31, 1908. 



c. S young. „ „ Feb. 15, 1909. 



(Z, e. (5 ad. & ? yg. „ „ Mar. 4-12, 1909. 



f,g. c? ? ad. „ „ June 8, 1909. 



h. ? ad. Villa Franca, Paraguay. Aug. 10, 1909. 



i. S ad. Cabo Emma, „ Oct. 20, 1909. 



cJ. Irides hazel; bill slate-coloured, darker at tip; legs 

 and toes slate-coloured. 



? . Irides hazel; bill, legs, and toes blue-slate-coloured. 



^ juv. Soft parts as in adult ; gape yellow. 



The October birds are rather faded compared with those 

 of June and August, and the March adult is much worn 

 and faded, and is starting to moult. 



The June male is in complete new dress, except for the 

 tail. 



The young female taken in March has only blackish tips 

 to the ear-coverts and is moulting. 



The young male is as follows : — " Similar to adult female 

 except forehead and ear-coverts grey, the latter faintly 

 bordered with blackish ; and the whole of the upper parts 

 more grey than blue.'^ 



