510 
Count T. Salvador! on the 
parts (breast, abdomen, and under tail-coverts) being of a 
deeper black. Moreover, the rusty-fulvous colour of the 
pileum and of the two spots at the base of the neck, in front 
and behind, are of a deeper hue in the Bogota specimens 
than in the two from Venezuela. 
The type-specimen of Theristicus columbianus , sent me by 
Dr. Finsch, certainly belongs to the present species ; it is 
somewhat immature (as shown by the absence of warts on the 
forehead and sides of the head, the skin being quite smooth) 
and therefore has the light band on the wings greyish white, 
and the hidden base of the secondaries dull whitish. 
A specimen in the Turin Museum, received “ from 
Brazil-” (no. 3), and another from Bolivia collected by 
Garlepp (. Mus . Berlepsch) (no. 9) have the lower parts 
lighter, somewhat more greyish than those mentioned above; 
both have the forehead more extensively feathered, and the 
dimensions somewhat smaller, but the differences seem to be 
well within the limits of individual variation. 
The specimen from Salta (no. 2), which, being a female, 
is somewhat smaller than the Cayenne bird, is quite similar to 
this, and differs only in the forehead being less naked, and the 
whitish colour of the neck more distinctly tinged with fulvous. 
The geographical range of this species has been very well 
indicated by Berlepsch and Stolzmann. It is confined to the 
eastern part of Southern America, and from Cayenne extends 
westward to British Guiana, Venezuela, and Colombia, and 
southward through Brazil, to Bolivia, Paraguay, Uruguay, 
and Northern Argentina, which probably is the southern 
limit of the species, as the specimens in the neighbour¬ 
hood of Buenos Ayres, which are found there during the 
winter, possibly belong to T. melanopis. This, however, can 
be ascertained only by examination of specimens collected in 
that country *. 
* Mr. Hudson (P. Z. S. 1871, p. 261 ) describes the Vanduria de 
Invierno , which is found during the winter south of Buenos Ayres, as 
having the wings and back ash-blue, a character of T. melanopis, and the 
under surface and belly black, which is a feature of T. caudatus ! Still 
I am inclined to believe that the bird mentioned is T. melanopis. 
