254 NORTH AMERICAN BIRDS. 



tail 10.00-11.00, culmen 1.20-1.41, tarsus 3.70-4.70. Sab. South America, 

 except northern portions. p. tharus (Mol.). Caracara. 1 



b 1 . Scapulars, sides, belly, and middle wing-coverts plain black in adult, plain 

 dull brownish in young ; tail-coverts plain white. Adult : Upper half 

 of head, scapulars, wings, lower back, rump, belly, sides, flanks, and anal 

 region plain dull black, or brownish black ; upper back and breast black, 

 barred with white ; lower portion of head, neck (all round), chest, and 

 tail-coverts soiled white, the chest transversely spotted with black ; basal 

 two-thirds (or more) of tail white, crossed by about 13-14 narrow bars 

 of dusky, these gi'owing less distinct basally; terminal zone of tail uni- 

 form black. Young : Black of adult replaced by dull brownish, darkest 

 on top of head ; white and dusky areas gradually blended, those portions 

 which are barred in the adult being striped with the two colors ; tail as 

 in adult. Length 20.50-25.00, wing 14.60-16.50, tail 8.80-10.00, culmen 

 1.20-1.48, tarsus 3.20-3.75. Nest on trees, bushes, or cliffs. Eggs 2-4, 

 2.30 X 1-74 ; ground-color cinnamon, pale umber, brownish white, or 

 walnut-brown, variously marked (usually blotched or stained) with 

 deeper brown (burnt-umber, chestnut, or claret-brown). Sab. Middle 

 America and northern South America, south to Guiana and Ecuador, 

 north to southern border of United States (Florida to Lower California). 

 362. P. cheriway (Jacq.). Audubon's Caracara. 

 a?. Eump and upper tail-coverts dull brownish buff, or light isabella-color, broadly 

 barred with dull brown ; tail brownish buff, or pale isabella-color, with broad 

 bars of grayish brown bordered by narrower zigzag bars or lines of dusky, 

 the terminal dark band less than 2.00 wide. 

 Adult : Upper half of head, lesser wing-coverts, secondaries, primary cov- 

 erts, terminal portion of primaries, under side of wing (including axillars), 

 and terminal zone of tail, plain blackish brown; ear-coverts, cheeks, and 

 throat plain dirty whitish or pale brownish buffy; rest of plumage 

 barred with dusky brownish and dull brownish buff or dirty brownish 

 white. Young : Quills, tail, tail-coverts, head, and lesser wing-coverts 

 much as in adult ; rest of plumage more or less distinctly striped with 

 dull brown and dirty brownish white or dull buffy, the former prevail- 

 ing, and sometimes nearly uniform, on upper parts. Downy young: 

 Light brownish buff, with a brown patch covering arm-wing and scapu- 

 lar region, and another covering top of head. "Wing 15.00-16.40, tail 

 10.50-11.65, culmen 1.25-1.35, tarsus 3.50-3.75. Hab. Guadalupe Island, 

 Lower California 363. P. lutosus Eidgw. Guadalupe Caracara. 



Genus PANDION Savigny. (Page 224, pi. LXX., fig. 3.) 



Species. 

 Adult male : Above plain dusky grayish brown, the tail more grayish, narrowly 

 tipped with white, and crossed by about six or seven narrow bands of dusky ; head, 



1 Faleo tharua Moh., Sp. Chil. 1782, 264, 343. Polyborws tharw Stbickl., Orn. Syn. 1855, 19. 



