93 



Wing ? 220 mm. ; much paler (brownish 

 slate) above and on chest ; inter-barring 

 whiter, less buffy below. 



157f. Rupornis magnirostris ruficauda (Scl. & 

 Salv.) P.Z.S., 1869, p. 133 [Type loc. sugg. 

 David, W. Panama, Chapm.]. 

 Red-tailed Large-billed Hawk. 



Wing S 215, $ 220-35 mm. ; tail with 

 the interspaces rufous instead of ashy ; 

 below buff, banded with rufous, throat 

 and chest ashy. 



Central America 

 (S. Nicaragua 

 to Panama) ; 

 Colombia 

 (Cauca Valley) 



I57g. Rupornis magnirostris gracilis Ridgw., Pr. Cozumel I., 

 U.S.N. Mus., viii., p. 94 (1885). [Cozumel Yucatan. 



Cozumel Hawk. 



Similar to griseicanda but smaller. 



158h. Rupornis magnirostris natter eri (Scl. & S.E. and C. 

 Salv.) P.Z.S. 1869, p. 132. {Sao Paulo et Brazil. 

 Mattogrosso.'] 

 Natterer's Hawk. 



Wing 3 220, ? 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.) Paraguay, 

 N. Diet., X., p. 328 (1817). [Paraguay, ex. S.E. Brazil, 

 Azara.] Argentina. 



Pucheran's Hawk. 



[= R. magnirostris pucker ani (J. & E. 

 Verr.)] 



