Paraguay , Bolivia, and Southern Brazil. \\7 



f. S ad. Colonia Mihanovitch, N. Argentine. Aug. 12, 

 1909. 



g. ^ ad. Santa Rosa, Paraguay. Aug. 14, 1909. 



h. ^ young. Pan de Azucar, Brazil. Sept. 19, 1909. 



Irides dark brown. 



The young birds are very similar to the adults, except 

 for the more buffy tips to the wing-€overts, and there is no 

 subcoronal white crest. 



A summer visitor to the Ajo district, arriving about 

 September 7th, according to Miss Runnacles, and leaving 

 again about May. 



It is a very solitary bird, seen singly or in pairs, hopping 

 about in the trees : the only sound that I have heard it utter 

 is a low sharp chirp. 



I have not taken the eggs, but there are two sets in Miss 

 Runnacles' collection, and she remarks : " Of the nesting- 

 habits I know very little, having only taken two nests, one 

 of these being placed in a gorsc bush and the other in the 

 middle of a clump of yellow broom: in both cases the number 

 of eggs was three, which is apparently the full clutch." 



The nest is deep and cup-shaped. 



85. Serpophaga nigricans. 



Serpophaga nigricans Scl. Cat. B. xiv. p. 112 ; Arg. Orn. 

 i. p. 141. 



a,b.^^ ad. Los Ynglases, Ajo. Sept. 24, 1908. 



c, d, e, f,g, h. (^ ^ ad. & yg. Los Ynglases, Ajo. Nov. 5- 

 12, 1908. 



ij, k. cJ ? ad. Luiconia, Ajo. Nov. 19-20, 1908. 



/. c? ad. Los Ynglases, „ Dec. 18, 1908. 



m. S ad. „ „ May 30, 1908. 



«. ? ad. Villa Oliva, Paraguay. Aug. 11, 1909. 



Irides hazel; bill, legs, and toes black. 



The November and December adults are getting rather 

 worn. 



The two young birds were taken from the nest : they are 

 rather greyer than the adults and have no white subcoronal 

 crest. 



