552 PROCEEDINGS OF THE NATIONAL MUSEUM ; VOL. 97 
CALOSPIZA MEXICANA MEDIA (Berlepsch and Hartert): Intermediate Turquoise Tanager 
Calliste mexicana media BeRLEPSCH and Hartert, Nov. Zool., vol. 9, 1902, p. 19 
(Maipures, Orinoco River, Venezuela). 
SPECIMENS COLLECTED 
2ad. 9, lim. 9, Puerto Ayacucho, Rio Orinoco, Venezuela, January 5, 1930 
and May 14, 1931. 
These specimens are practically topotypical. 
The immature female is indistinguishable from the adult collected 
at the same time except in that it is smaller (wing 66 as against 71 
mm. in the adult) and in that the humeral patch is smaller and in 
place of the outer row of violet-tipped feathers it has buffy-tipped 
ones. 
The race is new to the National Museum and the specimens have 
been identified by comparison with actual specimens of the other 
races, and with the original description of media, with which they 
agree in having the underparts slightly darker brighter yellow than 
in mexicana. In this they are intermediate between mezicana and 
vieilloti. The purplish color of the head and throat in all races of 
this species seems to vary according to wear. 
CALOSPIZA MEXICANA BOLIVIANA Bonaparte: Bolivian Turquoise Tanager 
Calospiza boliviana Bonapartr, Compt. Rend. Acad. Sci. Paris, vol. 32, No. 3, 
1851, p. 30 (Guarayos, Bolivia). 
SPECIMENS COLLECTED 
3.ad. #, lad. 9, 1 im. o, S40 Gabriel, Amazonas, Brazil, January 3-12, 
1931. 
The immature male is like the adults in every respect. 
This series agrees with specimens from ‘Bogota,’ Colombia, 
Ecuador, Peru, and “‘Brazil.’’ Six specimens from the Lower Amazon 
(Diamantina to Para) average paler on the belly and are referred to 
lateralis Todd, It may be remarked, in passing, that Hellmayr 
(Catalogue of the birds of the Americas, pt. 9, 1936, p. 137, footnote) 
considers lateralis as a synonym of boliviana. He writes that birds 
‘from Lower Amazonia (lateralis) are on average paler yellow below 
with more heavily black spotted flanks, but so many individuals are 
indistinguishable from those of Bolivia that I do not see any practical 
advantage in maintaining the distinction by a separate name. . .” 
On the other hand, Griscom and Greenway (Bull. Mus. Comp. Zool., 
vol. 88, No. 3, 1941, p. 325) find a long series from Lower Amazonia 
(Tapajéz, Santarém, and Benevides) to be readily told from seven 
Bolivian specimens. I have seen no Bolivian birds but assume from 
this that the present upper Amazonian birds differ from lateralis just 
as typical bolivianus is said to. In other words, if there are no other 
differences lateralis would be surrounded on the north and on the 
