16 



Gen. XIXA. CLIMACOCERCUS CAB. (1845.) 



Feet very much smaller ; tarsi more slender, with 

 broad and regular scales in front . 



Size small, length ((J) 13 in. ; wing 6.9. Above 

 slate or rufous (r;ifo\is phase) ; tail with 3 

 greyish white bands ; below greyish white, 

 barred with greyish black ; throat white, 

 fore-neck rufous. 

 51. Climacocerciis raficoUis (Vie ill.), N. ])iet., x., 

 p. 322 (1817). [S. America.] 

 Red-necked Harrier -Hawk 



Above chocolate brown ; tail blackish, ^Y\i]l 

 3 narrow white bands ; below thickly haired 

 with black and white ; throat brown. 

 51a. Climacocercus zonothorax Cab., J.f.O., 1865, 

 p. 406. [Porto Cabello, Venez.] 

 Barred Harrier -Hawk. 



Above (male) ashy brown (female blackish) ; 

 tail blackish "with 3 irregular white l)auds (4 

 in immature) ; beloAv whitish, breast iincly 

 barred with wavy blackish lines ; lower 

 abdomen white. 

 52, Climacocercus gilvicolUs (Vie ill.), N. Diet., x., 

 p. 323 (1817). [Pair. ign. : Cayenne ? ] 

 White -throated Harrier-Hawk . 



Above blackish ; tail with 3 irregular wliitc 

 bands ; throat and cheeks pale grey ; below 

 dull white, closely barred down to thighs with 

 blackish. 

 53. Climacocercus guerilla'^, ((-ass.), Pr. Phil. 

 Acad., 1848. p. 87. [Talwpa. 7l/&f.] 

 CieA'-throated Harrier-HaAvk. 



Venezuela, 

 Guiana, 

 Brazil, 

 Paraguay. 



Colombia, 

 Venezuela. 



Colombia & 

 Anuizonia to 

 Fj. Peru and 

 to20°S.lat. 

 in Brazil. 



Mexico to 

 Colombia. 

 Veiu^zula. 

 Brazil, arid 

 Ecuador. 



Gen. XX. GERAN0SPIZIA8 Smulev. (1873). 



Tarsus scaled behind ; thighs aa ithout overhanging 

 tuft of feathers ; ridge of l)ill greater than half 

 length of middle toe (Avithout claAv) ; commissure 

 slight] 3^ festooned. 



Size modonite (length 16.5-24.5 in.). 



* In revising this gruiip the fonns jugularU and viilersfcs appear to be 

 untenable and are therefore omitted. 



