Page 5, 
ERRATA ET ADDENDA. 
> 
No. 6.—For “ californicus”’ read “‘ californianus.” 
Gen. VI. add: Type by monotypy Falco serpentarius Miller. 
Page 8, No. 13.—In description, line 2, for “ back”’ read “ black.” 
Page 9, 
Page 12, No. 21.—For distribution read: “‘ Northern S. America’ 
2Iaa. 
No. 14b.—For ‘“‘ Gymnogyps’’ read “‘ Pseudogyps.” 
After this article add: 
Polyborus cheriway auduboni Cass. Pr. Philad. Acad. 
1865, p. 2. [Texas.] 
Larger; wing ¢ 390-400 mm. (as against 360 mm. 
in S. American form); plumage browner; under 
tail-coverts white, with a few dark bars only. 
Page 15, No. 30.—For distribution read :— 
For description read : 
Wing 6 296, 9 295-305 mm. ; above blackish brown, 
with slight paler edgings; behind eye each side a 
black stripe; head and hind neck buff, streaked 
with pale brown; upper tail-coverts and basal two- 
thirds of tail buffish white, with about 7 blackish 
bars on tail; apical third of tail black; below deep 
to pale ochraceous buff according to age. Juv.: 
head, neck and under parts dark brown, latter heavily 
striped with whitish. 
Page 15, No. 30a.—For distribution read :— 
30b. 
» 
For ‘‘ Not seen ’”’ read: 
Wing g 300 mm.; above browner than in M. c. 
strigilatus ; head and under parts, especially under 
side of wings, warm buff instead of white; base of 
primaries with narrow blackish bars. 
After this article add: 
Milvago chimachima strigilatus Spix., Av. Bras., 1., 
p. 10 and pl. [juv.] (1838). [River Xingt.] 
White-breasted Caracara. 
Smaller; wing ¢ 265, Y 280-290 mm.; above 
blacker ; basal half of primaries pure white, without 
bars ; head and hind neck buffish white ; upper tail- 
coverts and basal two thirds of tail white, the bars 
more or less obsolete ; below pure white. 
, 
only. 
S. United States, 
Cuba, Mexico, and 
Central America. 
Paraguay, 
N. Argentina (Chaco 
dist.), S. Brazil. 
Panama, Colombia 
to Brit. Guiana. 
E. and Central 
Brazil, N. to 
Amazonia. 
