(BLUE TANAGER.)
+Tanagra cyanoptera+, _Durnford, Ibis_, 1878, p. 59 (Buenos Ayres);
_Barrows, Bull. Nutt. Orn. Cl._ viii. p. 91 (Concepcion); _Scl.
Cat. B._ xi. p. 157 (part.). +Tanagra sayaca+, _Burm. La-Plata
Reise_, ii. p. 479 (Paraná); _Berl. Zeitschr. ges. Orn._ 1885,
p. 119, _Scl. Cat. B._ xi. p. 158.
_Description._--Bluish grey, paler below; wings and tail blackish,
edged with greenish blue; lesser wing-coverts dull greenish blue,
like the edgings of the wings; bill plumbeous, feet brown: whole
length 6·0 inches, wing 3·6, tail 2·7. _Female_ similar.
_Hab._ S.E. Brazil and Argentina.
In the 'Catalogue of Birds' I referred the Argentine Blue Tanager to _T.
cyanoptera_, though expressing a doubt upon the subject. I am now
disposed to adopt Graf. v. Berlepsch's view that the Argentine species
rather belongs to _T. sayaca_.--P. L. S.
This species migrates as far south as Buenos Ayres, and appears in
spring, in small flocks or parties of three or four birds, in the woods
on the shores of the Plata. The male utters a series of peculiar
squealing notes by way of song.