100 



with white ; quills black ; tail black with 

 broad white tips (35 mm.) and white bases 

 to outer feathers. 



*166a. Leucopternis albicollis occidentalis Salv. W. Ecuador, 

 Ibis, 1876, p. 496. \Puna /.] Colombia. 



Puna White-collared Hawk. 



Wing ? 338 mm. ; similar, but rather 

 smaller and with head plumbeous ; upper 

 parts plumbeous instead of black ; tail 

 white with narrow black sub-terminal 

 band (70 mm.). 



167. Leucopternis ghiesbreghti ghiesbreghti (Du S. Mexico to 



Bus), Esq. Zool., pi. 1 (1848). [Near Vera Guatemala 



Cruz, Mexico.] (Vera Paz) and 



Ghiesbreght's Hawk. Honduras. 



Wing S 320-330, ? 360-385 mm. ; larger ; 

 above and below white ; tail with sub- 

 terminal black band ; greater wing-coverts 

 and outer secondaries black tipped with 

 white, innermost (and sometimes all) 

 secondaries white ; primaries chiefly black. 



167a. Leucopternis ghiesbreghti costaricensis W. 

 Sclat., Bull. B.O.C., xxxix., p. 76 (1919). 

 [Carillo, Costa Rica, type in B.M.] 



Wing cj 350 mm. ; inner primaries and 

 secondaries dusky black, crossed by narrow 

 bars of dead black ; the tips and inner 

 edges white ; black tail band wider. 



Pacific slopes of 

 Guatemala to 

 Nicaragua, 

 Costa Rica and 

 Panama. 



168. Leucopternis polionota (G. R. Gray), Cat. 

 Accip. Br. Mus., p. 17 (1844). [Nom. nud.]: 

 Kaup, Isis, 1847, p. 212. [S. America = 

 Sao Paulo, Braz., type in Br. Mus.] 

 Mantled Hawk. 



S. Brazil. 



