25 
below white with black shaft lines; juv. 
below barred ; intermediate plumage below 
pale ochraceous fawn, as well as sides of 
face and nuchal collar. 
49a. Micrastur melanoleucus buckleyi, Swann, Ecuador 
Syn. List Accip., ed. 1, p. 15 subst. [ad., 
3 ?, Sarayacu, Ec. Feb. 1880, Buckley, 
B. Mus. coll. No. 87, 5. 1. 122.] 
Buckley’s Harrier-Hawk. 
Much smaller ; wing ¢ [?] 217 mm. ; tarsi 
and feet much smaller and weaker ; white 
tail bands above partly obscured by brown 
patches in centre and below less extensive ; 
those on outer feathers only 4 in number in 
place of 6 in typical form. 
50. Micrastur mirandolle: (Schl.), Nederl. Tijd- Upper E. Peru, 
schr., 1., p. 131 (1863). [Dutch Guana, Guiana, 
type in Leyden Mus.] Panama. 
Mirandolle’s Harrier-Hawk. 
Size medium ; length (9) 17.5; wing 248 
mm.; above slate; tail with 3 bands of 
ashy-brown showing white below; below 
white with black shaft lines; no nuchal 
collar. 
Gen. XX. CLIMACOCERCUS Cab. (1845) 
Type C. concentricus = C. gilvicollis. 
Size small; feet very much smaller ; tarsi more 
slender, with broad and regular scales in front. 
*51. Climacocercus ruficollis (Vieill.), N. Dict., Central and 
x., p. 322 (1817). [S. America, type in East Brazil, 
Paris Mus. ] Paraguay. 
Red-necked Harrier-Hawk. N. Argentina. 
