56 



Smaller ; much paler (smoke grey) above ; 

 slightly paler below. 

 158c. Rupornis tnagnirostris conspecta, Peters, Auk, Yvicatan 

 1913, ]). 370 [San Ignacio.] Peninsula. 



Tail with the interspaces rufous instead of 

 ashy ; below buff banded with rufous, throat 

 and chest ashy. 

 158d. Rupornis magnirostris ruficauda (Scl. & Sal v.), Central 

 P.Z.S., 1869, p. 133 [Type loc. sugg. David, America 

 W. Panama, Chapm.]. (S. Nicaragua 



Red-tailed HaAvk. to Panauia.) 



Insular race. 

 158e. Rupornis magnirostris gracilis Ridgw., Pr. Cozvimel 



U.S.N. Mus., viii., p. 94 (1885). [Cozumell.] I. Yucatan. 



158f. 



Length $ 14.50, wing 10 in. ; tail dark brown 

 imperfectly banded with white and shaded 

 with dull rufous ; below dark rufous narrowl}'" 

 banded Avith white. 



Rupornis ma(jnirostris ridgivayi Cory. Auk, i., 

 p. 4 (1884). ' [S. Domingo]. 



Larger ; above browai, darker on head ; quills 

 paler rufous than in R. m. ruficauda, and with 

 bases pale rufous externally ; tail pale rufous 

 banded with dark brown ; below buffy-white, 

 very narrowly and indistinctly barred with 

 pale rufous. 

 158g. Rupornis magnirostris pticherani, J. & E. Verr. 

 Rev. et Mag. de Zool., 1855, p. 350 [type loc. 

 sugg. Paraguay, Brab. & Chubb.] 



Above ashy brown, head much clearer ; tail 

 with the interspaces ashy-brown ; throat 

 ashy-grey ; chest pale rufous, rest of under 

 parts fulvous barred with pale rufous. 

 158h. Rupornis magnirostris natter eri (Scl. & 



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



Mattogrosso.] 



Natterer's Hawk. 



Haiti and S. 

 S. Domingo. 



Paraguay, 

 S.E. Brazil, 

 Bolivia, 

 Arojentina. 



S.E. & C. 

 Brazil. 



Uniform black, lower upjaer tail-coverts and 

 base of tail white ; tail black, with a single 

 band of ashy-brown ; tibial plumes rufous ; 

 under tail -coverts buffv-Avhite. 



