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P late X X X V I I .
ACCIPITER CHILENSIS.
(CHILIAN SPAEEOW-HAW).
Acc ip iter cliilensis
A cc ip iter cooperi
Ph il, e t L an dh ., W iegm . Arcli. 18G4, p. 43.
Scl. P.Z.S. 1867, p. 329.
Pelz. N o v ara-E eise, Yog. p . 13.
S u p rà fumido-niger, pileo n ig ric an te : su b tu s ex ru fe scen te c inereus , albo ma cu la tu s ; h is maculis u trin q u e nigro
ma rg in atis : tib iis ferru g in eo -ru fis : su b a larib u s rufis n ig ro p u n c ta tis : c audà su p rà fumido-nigrâ, su b tu s albescenti-
einereâ, qu inq u ie s n ig ro -v itta tâ ; ro s tro nig ro , p edibus flavis : lo n g , to ta 17'5, alæ 9 '5 , caudæ 7 ‘5, ta rs i 3 '0 .— j r .
Plum is su p rà fusco ma rg in atis, su b tu s a lb u s n ig ro g u tta tu s , tib iis albidis, u ig ro m aeulatis .
Hab. Chili (Ph il, e t Lan d b .): Mag ellan -straits (K in g ).
The Chilian Sparrow-hawk appears to have heen always passed over unrecognized, and
confounded with its allies Accipiter pileatus aad A . cooperi, until it was described hy Messrs.
Philippi and Landbeck in 1864. Aided by theii- accurate diagnoses o f the various plumages,
we had no difficulty in finding specimens o f it in the rich stores o f the National Collection,
where they had been previously treated as foi-ms o f A. pileatus. We believe, however, that
there is no question as to the constancy o f the differential characters o f the Chilian bird, and
we have great pleasiu-e in giving the first representation o f it, under tlie name bestowed upon
it by Messrs. Philippi and Landbeck.
On reference to our plate, tlie differences between the adult plumages of A . chlensis and
A . pileatus as figm-ed In Temminck’s Planche Coloriée 205 w ü l be at once manifest. In the
latter, the under plumage is o f a nearly uniform brownish cinereous. In A . chilensis the
plumage beneath is thickly barred with wliite, and these white bars are in turn narrowly
bordered with black. The immature plumages o f the two birds may not in all cases be so
easily distinguishable, nor have we at present materials sufficient to enable us to point out the
differences accurately. But, i f our identification o f the young birds in the British Jluseum is
correct, the young A , pileatus is the bird figured by Temminck (PI. Col. 295) as the young
o f A . poliogaster, and differs from the young o f A . chilensis in being unspotted in the middle
o f the belly, and more tinged with rufous below.
The Chilian Sparrow-hawk, as wc are informed hy Messrs. Philippi and Landbeck, mhabits
the greater part o f Chili ; at least, it has been noticed by these Natiu-alists from the Province