157f. 
93 
Wing 2 220 mm.; much paler (brownish 
slate) above and on chest ; inter-barring 
whiter, less buffy below. 
Rupornis magnirostris ruficauda (Scl. & 
Salv.) P.Z.S., 1869, p. 133 [Type loc. sugg. 
David, W. Panama, Chapm.]. 
Red-tailed Large-billed Hawk. 
Wing 6 215, @ 220-35 mm.; tail with 
the interspaces rufous instead of ashy ; 
below buff, banded with rufous, throat 
and chest ashy. 
157g. Rupornis magmirostris gracilis Ridgw., Pr. 
158h. 
U.S.N. Mus., viil., p. 94 (1885). [Cozumel 
via) 
Cozumel Hawk. 
Similar to gviseicanda but smaller. 
Rupornis magnirostris nattererr (Scl. & 
Salv.) P.Z.S. 1869, p. 132. [Sao Paulo et 
Mattogrosso. | 
Natterer’s Hawk. 
Wing 3 220, 2 233 mm.; above ashy 
brown, head much clearer ; tail with the 
interspaces ashy-brown ; throat ashy-grey ; 
chest pale rufous, rest of under parts ful- 
vous barred with pale rufous. 
157i. Rupornis magnirostris superciliaris (Vieill.) 
N. Dict., x., p. 328 (1817). [Paraguay, ex. 
Azara. | 
Pucheran’s Hawk. 
[= R. magnirostris pucherant (J. & E. 
Verr.)] 
Central America 
(S. Nicaragua 
to Panama) ; 
Colombia 
(Cauca Valley) 
Cozumel L., 
Wiucatane 
S:.E. and €; 
Brazil. 
Paraguay, 
S.E. Brazil; 
Argentina. 
