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BIRDS OF ARGENTINA, PARAGUAY, URUGUAY, AND CHILE 107
served near marshes on February 17 and 18. On March 8 one was
seen from the train near 25 de Mayo, Buenos Aires, and others were
noted in the same manner west of the city of Buenos Aires on
March 13.
The immature female taken October 28, when fresh, had the bill,
anterior to the cere, black; base of bill, including: the mandibular
rami, the skin back as far as the eye and a narrow external rim on
the eyelids zinc orano:e ; iris liver brown ; tarsus and toes dull j'^ellow
ocher; claws black. The male in adult plumage secured on October
31 had the bill mainly black ; cere, bare skin in front of eye, gape, and
mandibular rami flame scarlet; iris carmine; tarsus and toes apricot
orange; claws black. The adult thus was much brighter in color.
The immature female from Uruguay, fully grown, but a bird of the
year, has the paler markings in the plumage much darker, more
nifescent, than in birds in second-year dress.
Doctor Oberholser ^^ proposes to replace Rostrhanius of Lesson by
Cyniindes Spix ^^ on the ground that Cymindes is a new name at the
reference cited, a suggestion, however, that is in error. Spix gave
diagnoses for all of the genera that he used without citing the name
of the founder, so that Aguila, Polyborus, and Cathartes which precede
Cymindes are characterized in the same manner as the name
under discussion. On reference to the index to the first volume of
Spix, which immediately precedes the text, the genus in question is
given as Cymindis^ on page 7, as stated, it stands as Cymindes, while
plate 2 is lettered Cymindis Leucopygus. It is obvious, therefore,
that Cymindes is simply an emendation (apparently unintentional)
of Cymindis Cuvier and as such has no priority over the generic
name Rostrhamus for the everglade kite.
GERANOSPIZA GRACILIS (Temminck)
Falco gracilis Temsiinck, Nouv. Rec. Planch. Col. Ois., livr. IG, April.
1822," pi. 91. (Eastern Brazil.)
Hellmayr ^® considers gracilis of Temminck a subspecies of Gerano-
spiza caerulescens. In the material available the two appear so
different, with no indicated intergrades, that this usage is not
justified.
This bird was encountered on two occasions near the ranch at
Kilometer 80, west of Puerto Pinasco, Paraguay. On the morning
of September 15, 1920, one rested quietly on a post above a pond in
one of the corrals, and was killed from the door of the kitchen.
On September 20 in a tract of heavy monte one flew into the top of
sBProc. Biol. Soc. Washington, vol. 35. Mar. 20, 1922, p. 79.
*« Av. Spec. Nov. Brasiliam, vol. 1, 1824, p. 7.
8'' From Sherborn, Ibis, 1898, p. 488.
88 Nov. Zool., vol. 28, May, 1921, p. 177.