i8S 3 .1 
Barrows on Birds of the Lower Uruguay. 
201 
sometimes perfectly spherical, though oftener of a depressed 
globular form, and with a large hole in the side, which is rarely 
round or neatly finished. The site of the nest seems to be 
selected with some care and doubtless with some important end 
in view, though what it may be I cannot say, unless it have 
reference to the visits of the enemies above alluded to. At all 
events a very large proportion of the nests are placed on trees 
or bushes which either extend directly out over water or else 
overhang some bank, bluff, or abrupt depression so that it is often 
difficult for a person to examine the nest even when it is not 
twenty feet in a direct line from the root of the tree. Out of at 
least twenty-five nests examined, about two thirds overhung the 
water and were reached by standing up in a boat and drawing 
down the branch or ‘branches which held them. Of the remain- 
der, only two or three were built on trees which stood on level 
ground. 
The eggs are usually five in number, sometimes but four, and 
often only three, in nests found in November or December. In 
color they vary from pearly-white to buffy-white, dashed more or 
less thickly with spots of brown or black. We did not meet 
with this bird at Azul or further south, and I believe it is never 
found far from water, or in regions where timber is very scarce. 
68. Myiodynastes solitarius ( Weill .). — The first spec- 
imen of this fine Flycatcher which I saw was brought to me 
by a boy who killed it with a rubber “sling” among the Para- 
dise trees in the Plaza at Concepcion. This was on November 
26, and only two more specimens were secured in the next 
month’s collecting, though several others were observed. They 
kept mostly among the large trees along the river banks where 
they may perhaps breed, though their proper home is further 
up the river in Paraguay and Brazil. 
69. Myiobius naevius ( Bodd .). — A rather scarce spring 
migrant occurring singly or in pairs during September and 
October. It was usually found among thorny bushes in com- 
paratively open and wet ground. 
70. Pyroceplialus rubineus {Bodd.). Brasa de fuego 
(Coal of Fire) and Churrinche. (This latter name is also 
applied to any of the other small Flycatchers, but I could not 
find out what it signified.) — The Vermilion Flycatcher is an 
abundant summer resident at Concepcion, arriving about the 
