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394 BULLETIN 133, UNITED STATES NATIONAL MUSEUM
Formosa, August 23 and 24, and Kilometer 80, west of Puerto
Pinasco, Paraguay, September 16 (two seen and a female taken).
Mrs. E. M. B. Naumburg ®^ has recently separated the blue tanager
of Bolivia and Argentina (except Misiones) as a race that may be
distinguished by darker coloration especially above, somewhat
longer wing, and usually smaller bill than tj'pical sayaca from north-
eastern Brazil (Bahia and Ceara). Skins from Las Palmas, Chaco,
are representative of obscura., while one from Kilometer 80, west of
Puerto Pinasco, while intermediate, is so dark that it is best identified
with the western race. In the rather limited series that I have
seen skins from Matto Grosso, Paraguay, Sao Paulo, and Rio Grande
do Sul are distinctly intermediate and appear on the whole nearer
ohscura than sayaca. This statement is made with reservation as it
is based on a limited number of skins.
During the winter period these birds were found in bands of three
or four to a dozen that worked quickly through the tops of the trees,
or that flew with undulating flight for long distances across country.
They were shy and difficult to see among the dense leaves of the
trees. Little flocks frequented orange trees where they cut open ripe
fruit to eat the juicy pulp.
Hartert is apparently correct in his statement ^^ that there are no
Argentine records for T. cyanoptera., as in a fair series of Argentine
skins in the United States National Museum that species is not rep-
resented.
STEPHANOPHORUS DIADEMATUS (Temmir.ck)
Tanagra diademata Temminck, Nouv. Rec. Planch. Col. Ois., vol. 3, livr.
41, pi. 243, Dec. 27, 1823. (Brazil.)
The name Tanagra diademata is ordinarily cited from Mikan's
Delectus Florae et Faunae Brasiliensis as "pi. 2, 1820-25." On
consulting this rare work it is found that the name in question occurs
in the fourth fascicle which did not appear until 1825, so that Tem-
minck's publication at the end of 1823 has priority.
This handsome species was common in Uruguay, where it was
noted at La Paloma, the port of Rocha, January 23 (adult and immature
males taken) ; San Vicente, January 27 to 31 (male and
female collected) ; Lazcano, February 6 to 8 (male taken), and Rio
Negro, February 15 to 19. The birds inhabited dense thickets.
They rested often on the tops of bushes or trees, and when alarmed
dropped into heavy cover beneath. They decoyed readily and were
collected without difficulty. The song is a pleasant, rapidly uttered
warble, finchlike in tone, and the call a soft chewp cheivp. The
flight is tilting. Unless light conditions are favorable they appear
eiAuk, 1924, pp. 105-116.
»2Nov. Zool., December, 1909, p. 171.