Paraguay, Bolivia, and Southern Brazil. 117 
f. S a d. Colonia Mihanovitch, N. Argentine. Aug. 12, 
1909. 
g. ad. Santa Rosa, Paraguay. Aug. 14, 1909. 
h. S 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-coverts, 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 gorse 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. ? a d. Los Ynglases, Ajo. Sept. 24, 1908. 
c, d , e , /, g, h. <$ $ ad. & yg. Los Ynglases, Ajo. Nov. 5- 
12, 1908. 
i. j, Jc. <$ ? ad. Luiconia, Ajo. Nov. 19-20, 1908. 
l. ^ ad. Los Ynglases, ,, Dec. 18, 1908. 
m. S a d- „ » May 30, 1908. 
n. % 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. 
