f
ACCIPITER BICOLOR.
(VIEILLOTS SPAEEOW-HAWI),
“ N isu s variatus, C m .”
J ce ip ite r sesfasciatus
N isu s se ffasciaius .
“ M icrastur dynastes, V erreau x ."
A ccipiter p ileatus
Accipiter eryihrocnemius .
Vieill. N. D. X. p. 323 (1 8 1 6 ), e t Euc. M e th . p. 1265.
Less. Tr. d ’Orn. p. 61 (1 831).
Sw. An. in Menag. p . 28 2 (1888).
Cab. in Schomb. Guian. iii. p . 736.
Bp. N o te s O rn . p, 4.
Scl, P.Z.S . 1859, p . 389.
Salv. Ib is , 1861, p. 355.
Lawr. An n . Lye. N . S. vii. p. 289, e t ix. p . 134.
Sel. P.Z.S. 1860, p. 96, (err.)
S u p rà 's a tu ra tè cineraceo-nigricans, p ileo nig ro : su b tu s sehistaceus, lineolis an g u stis nigris in pluma rum rachidibus
orn atu s , subalaribus e t v e n tre imo cum crisso albis ; tib iis s a tu ra te ferru g in eis : remigibus su b tù s n ig ric an tib u s, albo
fre q u en tèr tran s fa sciatis ; caudâ su b tù s n ig ra albo tr iv itta tâ : long, to ta 15'0, alæ 8 '5 , caudæ 6'5, ta rs i 2'4, dig. med.
c. u . l '9 . Fem. m a ri similis, sed major, long, to ta 17 0, alæ 9-7, caudæ 7 5, ta rs i 2 '6 , dig. med. c. u, 2 ’2 . Junior.
S u p rà omninò fumido-brunneus, to rq u e an g u sto collari a lbicante : su b tù s unicolor la ctescenti-albus, fulvo p e rfusus,
tib iis p a llide rufescentibus.
ILah. in America co ntinentali tropica a Mexico meridionali u sque ad G u ia n am : Mexico merid. (B o u c a r d ) -,
G u atemala (jSììZwk) ; Co sta E ic a (Carmiol)-, V e rag u a (Arce)-, Pan ama (McCleannan)-, Nov. G ra n ad a in t. Bogota
(Mu s. S— G.)-, rep . Æ q n a to r. (F ra ser) ; Venezuela (Levra u d ) ; G u ia n a (Sohomlurg k) ; Cayenna (Poiteau e t Leblond).
After examination o f a large number o f specimens o f Accipiter pileatus (usually so called)
from various parts o f Tropical America, we have come to the conclusion that two species
remain confounded under this name besides the Accipiter chilensis, o f which we have already
given a figure. The most noticeable points o f distinction between these two hh'ds are as follows.
In the true A . pileatus o f Prince Max., the adult o f which is we ll figured in Temminclv’s
Planches Coloriées (205), the under-wing-coverts are deep red o f nearly the same hue as the
thighs. Again, the young bird o f the Brazilian species, which appears to he represented by
the same author (PI. Col. 295) as the young of his Falco poliogaster, is always conspicuously
spotted beneath, more especially on the flanks. But in the northem representative, which we
now illustrate, it will be apparent that the under-wing-coverts o f the adult are white, and
that, i f our views are correct, in the immature stage the under-surface is o f a uniform pale
fulvous without spots of any kind.
The name pileatus being retained for the Brazilian bh-d it remains to discover what is the
oldest specific term strictly applicable to the northem species. This, as will he seen from our
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