157f. 
93 
Wing 2 220 mm.; much paler (brownish 
slate) above and on chest ; inter-barring 
whiter, less buffy below. 
Rupornis magnirvostris ruficauda (Scl. & 
Salv.) P.Z.S., 1869, p. 133 [Type loc. sugg. 
David, W. Panama, Chapm.]. 
Red-tailed Large-billed Hawk. 
Wing 6 215, 2 220-35 mm.; tail with 
the interspaces rufous instead of ashy ; 
below buff, banded with rufous, throat 
and chest ashy. 
157g. Ruporms magmirostris gracilis Ridgw., Pr. 
158h. 
U.S.N. Mus., viil., p. 94 (1885). [Cozumel 
i 
Cozumel Hawk. 
Similar to grisercanda but smaller. 
Rupornis magnivosiris natterert (Scl. & 
Salv.) P.Z.S. 1869, p. 132. [Sao Paulo et 
Mattogrosso. | 
Natterer’s Hawk. 
Wing g 220, 9 233 mm.; above ashy 
brown, head much clearer; tail with the 
interspaces ashy-brown ; throat ashy-grey ; 
chest pale rufous, gest of under parts ful- 
vous barred with pale rufous. 
157i. Rupornis magmyrostris superciliaris (Vieill.) 
N. Dict., x., p. $28 (1817). [Paraguay, ex. 
Azara. | 
Pucheran’s Hawk. 
[= R. magnivosiris pucheram (J. & E. 
Verr.) | 
Central America 
(S. Nicaragua 
to Panama) ; 
Colombia 
(Cauca Valley). 
Cozumel I., 
Yucatan. 
S.E. and C. 
Brazil. 
Paraguay, 
S.E. Brazil, 
Argentina. 
