*24. 
*24a. 
25. 
14 
Ibycter americanus americanus (Bodd.), Tropical S. 
Tabl. Pl. Enl., p. 25 (1783). [Cayenne.] America from 
Red-throated Caracara. Panama to the 
Guianas, Brazil, 
Wing ¢ 335-59, 2 355-60 mm.; plumage Ecuador and 
black with greenish reflections, but abdo- Peru. 
men white ; face and throat deep red. 
Ibycter americanus guatemalensis subsp. nov. Guatemala 
fad. 2? Guatemala, T. C. Eyton coll., in coll. and Central 
H. Kirke Swann, wing 390 mm.] America. 
Northern Red-throated Caracara. 
Larger, with longer wings and tail; wing g 
(B.M. Guatemala examples) 376-82 ; 2385-90. 
Ibycter megalopterus (Meyen), Nov. Act. S. America, 
Ces., xvi., Suppl., i., p. 64, pl. 7 (1834). Pacific side of 
[Chile.] Andes. 
Mountain Caracara. 
Wing ad. 370 mm.; plumage black with 
greenish reflections, but upper tail coverts, 
base and tip of tail and abdomen white. 
Ibycter albigularis albigularis (Gould),P.Z.S., Patagonia. 
1837, p. 9. [Santa Cruz, type in Brit. Mus.] 
White-throated Caracara. 
Wing ad. 395 mm. ; above brownish black ; 
upper tail-coverts, base and tip of tail and 
entire under parts white ; sides irregularly 
marked with black. 
Ibycter albigularis circumcinctus Scott, Auk, Patagonia, 
xxvii., 1910, p. 152. [Chubut, Patagonia.] E. of Andes. 
Scott’s Caracara. 
Wing ¢ 410 mm. ; plumage black ; rump, 
upper tail-coverts and base and terminal 
band on tail white; below white with a 
variable band of black across lower throat. 
